/* style.css — TripCash */

/* ─── Design tokens ──────────────────────────────────────────── */
:root {
  /* Brand palette */
  --teal:          #14BBA6;
  --teal-dark:     #0F9488;
  --teal-deep:     #0F766E;

  /* Dark mode (default) — Dark Slate theme */
  --bg:            #0F172A;
  --bg-card:       #1E293B;
  --bg-input:      #2D3F55;
  --bg-hover:      #253248;
  --accent:        #14BBA6;
  --accent-dark:   #0F9488;
  --accent-bg:     rgba(20,187,166,0.1);
  --accent-glow:   rgba(20,187,166,0.22);
  --text:          #F8FAFC;
  --text-2:        #94A3B8;
  --text-3:        #475569;
  --border:        rgba(148,163,184,0.12);
  --border-h:      rgba(148,163,184,0.24);
  --danger:        #EF4444;
  --warn:          #F59E0B;
  --r-card:        16px;
  --r-el:          10px;
  --font:          'Inter', 'DM Sans', sans-serif;
  --mono:          'DM Mono', monospace;
  --shadow:        0 2px 8px rgba(0,0,0,0.32);
  --shadow-md:     0 4px 20px rgba(0,0,0,0.42);
  --shadow-lg:     0 12px 40px rgba(0,0,0,0.55);
  --t:             0.15s ease;
}

body.light {
  --bg:            #F8FAFC;
  --bg-card:       #FFFFFF;
  --bg-input:      #F1F5F9;
  --bg-hover:      #F8FAFC;
  --text:          #0F172A;
  --text-2:        #64748B;
  --text-3:        #94A3B8;
  --border:        #E2E8F0;
  --border-h:      #CBD5E1;
  --accent-bg:     rgba(20,187,166,0.08);
  --accent-glow:   rgba(20,187,166,0.14);
  --shadow:        0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:     0 4px 12px rgba(0,0,0,0.09), 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg:     0 10px 30px rgba(0,0,0,0.12);
}

/* ─── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--t), color var(--t);
}
a { color: var(--accent); text-decoration: none; }

/* ─── Screens ────────────────────────────────────────────────── */
.screen { display: none; }
.screen.active { display: block; }

.legal-links,
.legal-consent {
  color: var(--text-3);
  font-size: 0.75rem;
  text-align: center;
}
.legal-links { margin-top: 1.15rem; }
.legal-consent { margin-top: 0.85rem; line-height: 1.45; }
.legal-links a,
.legal-consent a,
.legal-page a { color: var(--accent); text-decoration: none; }
.legal-links a:hover,
.legal-consent a:hover,
.legal-page a:hover { text-decoration: underline; }

.legal-page {
  width: min(760px, calc(100% - 2rem));
  margin: 2rem auto 4rem;
}
.legal-page-header { margin-bottom: 2rem; }
.legal-page-header .logo { display: inline-flex; margin-bottom: 1.5rem; }
.legal-page h1 { font-size: clamp(1.8rem, 5vw, 2.5rem); margin-bottom: 0.35rem; }
.legal-page h2 { font-size: 1.05rem; margin: 1.8rem 0 0.55rem; }
.legal-page p,
.legal-page li { color: var(--text-2); }
.legal-page ul { padding-left: 1.25rem; margin-top: 0.5rem; }
.legal-page li { margin-bottom: 0.4rem; }
.legal-meta { font-size: 0.85rem; color: var(--text-3); }
.legal-placeholder {
  background: rgba(245,158,11,0.12);
  color: var(--warn);
  border-radius: 4px;
  padding: 0.05rem 0.3rem;
  font-weight: 600;
}

.auth-forgot {
  display: block;
  margin: -0.25rem 0 0.85rem auto;
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}
.auth-forgot:hover { text-decoration: underline; }

#screen-loading {
  min-height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 2.5rem;
  background: #0B2B2A;
}
#screen-loading.active { display: flex; }

.splash-logo { text-align: center; }
.splash-logo-text {
  font-size: 2.25rem !important;
  gap: 0.5rem !important;
}
#screen-loading .splash-logo-text::before {
  background:
    radial-gradient(circle at 63% 37%, rgba(255,255,255,.42) 0 29%, transparent 30%),
    radial-gradient(circle at 37% 63%, #fff 0 29%, transparent 30%);
}
.splash-logo-text .logo-trip,
.splash-logo-text .logo-cash { color: white !important; }
.splash-tagline {
  color: rgba(255,255,255,0.65);
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 0.6rem;
  letter-spacing: 0.02em;
}

body.light #screen-loading { background: #FAFAFA; }
body.light #screen-loading .splash-logo-text::before {
  background:
    radial-gradient(circle at 63% 37%, #F59E0B 0 29%, transparent 30%),
    radial-gradient(circle at 37% 63%, #0EA5A0 0 29%, transparent 30%);
}
body.light .splash-logo-text .logo-trip,
body.light .splash-logo-text .logo-cash { color: #0B2B2A !important; }
body.light .splash-tagline { color: #6B7A78; }

#screen-not-found {
  min-height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  padding: 2rem;
  gap: 0.75rem;
}
#screen-not-found.active { display: flex; }
#screen-not-found h2 { font-size: 1.4rem; font-weight: 700; }
#screen-not-found p  { color: var(--text-2); }

/* ─── Spinner ────────────────────────────────────────────────── */
.spinner {
  width: 36px; height: 36px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.splash-spinner {
  border-color: rgba(255,255,255,0.25);
  border-top-color: white;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Auth screen ────────────────────────────────────────────── */
#screen-auth {
  min-height: 100vh;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  background: var(--bg);
}
#screen-auth.active { display: flex; }

/* Subtle radial glow behind auth card (dark mode) */
#screen-auth::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(20,187,166,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  padding: 2.5rem 2.25rem;
  width: 100%;
  max-width: 420px;
  position: relative;
}

.auth-logo { margin-bottom: 0.4rem; }
.auth-tagline {
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
  letter-spacing: 0.01em;
}

/* ─── Logo ───────────────────────────────────────────────────── */
.logo {
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  line-height: 1;
}
.logo-trip { color: var(--text); }
.logo-cash { color: var(--accent); }
.logo-pin  { width: 14px; height: 18px; flex-shrink: 0; }
.auth-logo-text { font-size: 1.65rem; gap: 0.5rem; }

/* ─── Auth tabs ──────────────────────────────────────────────── */
.auth-tabs {
  display: flex;
  background: var(--bg-input);
  border-radius: 10px;
  padding: 3px;
  gap: 3px;
  margin-bottom: 1.75rem;
}
.auth-tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 0.5rem 0.25rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  border-radius: 7px;
  font-family: var(--font);
  transition: background var(--t), color var(--t), box-shadow var(--t);
}
.auth-tab-btn.active {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

/* ─── Guest banner ───────────────────────────────────────────── */
.guest-banner {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: 10px;
  padding: 0.65rem 1.1rem;
  font-size: 0.82rem;
  color: var(--warn);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.guest-banner button {
  margin-left: auto;
  background: var(--warn);
  color: #0F172A;
  border: none;
  border-radius: 6px;
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--t);
}
.guest-banner button:hover { opacity: 0.88; }

/* ─── Trips screen ───────────────────────────────────────────── */
#screen-trips {
  min-height: 100vh;
  display: none;
  flex-direction: column;
}
#screen-trips.active { display: flex; }

/* App header */
.app-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-left  { display: flex; align-items: center; gap: 0.75rem; }
.header-right { display: flex; align-items: center; gap: 0.5rem; }
.header-user {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-2);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-icon-round {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-2);
  transition: background var(--t), border-color var(--t), color var(--t);
  flex-shrink: 0;
}
.btn-icon-round:hover {
  background: var(--bg-hover);
  border-color: var(--border-h);
  color: var(--text);
}

/* Trips main content */
.trips-content {
  flex: 1;
  padding: 2rem 1.5rem;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* Greeting */
.trips-greeting { margin-bottom: 2.5rem; }
.greeting-title {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.2;
  margin-bottom: 0.35rem;
}
.greeting-title span { color: var(--accent); }
.greeting-sub {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}
.stat-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-card);
  padding: 1.4rem 1.35rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--t), transform 0.12s;
  cursor: default;
}
.stat-tile:hover {
  box-shadow: 0 6px 28px var(--accent-glow);
  transform: translateY(-1px);
}
.stat-tile-icon  {
  font-size: 1.25rem;
  display: block;
  margin-bottom: 0.6rem;
  line-height: 1;
}
.stat-tile-num   {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-tile-label {
  font-size: 0.68rem;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* Section header */
.section-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.section-hdr h2 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ─── Trip cards ─────────────────────────────────────────────── */
.trip-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.trip-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: border-color var(--t), box-shadow var(--t), transform 0.12s;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.trip-card:hover {
  border-color: rgba(20,187,166,0.4);
  box-shadow: 0 6px 28px var(--accent-glow);
  transform: translateY(-1px);
}
.trip-card:active { transform: scale(0.995); }

.trip-emoji { font-size: 2.25rem; flex-shrink: 0; line-height: 1; }
.trip-info  { flex: 1; min-width: 0; }
.trip-name  {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.3rem;
}
.trip-meta {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.trip-right {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.trip-chevron {
  font-size: 1.1rem;
  color: var(--text-3);
  transition: color var(--t), transform var(--t);
  line-height: 1;
}
.trip-card:hover .trip-chevron { color: var(--accent); transform: translateX(3px); }

.dot { color: var(--text-3); }

/* Badges */
.badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 100px;
  letter-spacing: 0.03em;
}
.badge-creator { background: var(--accent-bg); color: var(--accent); }
.badge-member  { background: rgba(148,163,184,0.1); color: var(--text-2); }
.badge-ended   { background: rgba(239,68,68,0.1); color: var(--danger); }
.badge-active  { background: var(--accent-bg); color: var(--accent); }
.badge-settled { background: rgba(20,187,166,0.1); color: var(--accent); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 4rem 1rem 3rem;
  color: var(--text-2);
}
.empty-icon { font-size: 3rem; margin-bottom: 1rem; display: block; }
.empty-state h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.empty-state p  { font-size: 0.875rem; }
.empty-hint { color: var(--text-2); font-size: 0.85rem; padding: 0.75rem 0; }

/* ─── Dashboard header ───────────────────────────────────────── */
#screen-dashboard { min-height: 100vh; display: none; flex-direction: column; }
#screen-dashboard.active { display: flex; }

.dash-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1rem 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 20;
}
.dash-top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.btn-back {
  background: none; border: none;
  color: var(--text-2);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font); cursor: pointer;
  padding: 0; white-space: nowrap;
  transition: color var(--t);
}
.btn-back:hover { color: var(--accent); }

.dash-title {
  flex: 1;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.day-badge {
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.22rem 0.75rem;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.04em;
  border: 1px solid rgba(20,187,166,0.2);
}

/* ─── Pill tabs ──────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0;
  max-width: 800px;
  margin: 0 auto;
}
.tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  background: none;
  border: none;
  padding: 0.65rem 1.1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  font-family: var(--font);
  letter-spacing: 0.01em;
  transition: color var(--t), border-color var(--t);
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.dash-content { flex: 1; overflow-y: auto; padding-bottom: 5.5rem; }
.tab-panel    { display: none; padding: 1.5rem; }
.tab-panel.active { display: block; }

/* ─── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.4rem 1.35rem;
  margin-bottom: 0.85rem;
  box-shadow: var(--shadow);
}
.card-label {
  font-size: 0.65rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 0.75rem;
  font-weight: 600;
}
.big-amount {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: 0.2rem;
}
.sub-text { font-size: 0.8rem; font-weight: 500; color: var(--text-2); }

/* ─── Overview tiles ─────────────────────────────────────────── */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-bottom: 0.85rem;
}
.ov-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.15rem 1.1rem;
  box-shadow: var(--shadow);
  transition: border-color var(--t), box-shadow var(--t), transform 0.12s;
}
.ov-tile:hover {
  border-color: rgba(20,187,166,0.3);
  box-shadow: 0 4px 18px var(--accent-glow);
  transform: translateY(-1px);
}
.ov-tile-icon  { font-size: 1.2rem; display: block; margin-bottom: 0.55rem; line-height: 1; }
.ov-tile-label {
  font-size: 0.64rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.ov-tile-val   {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

/* Invite link */
.share-row { display: flex; gap: 0.5rem; align-items: center; }
.share-input {
  flex: 1;
  font-family: var(--mono);
  font-size: 0.7rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--r-el);
  padding: 0.55rem 0.75rem;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.invite-hint { font-size: 0.74rem; color: var(--text-3); margin-top: 0.5rem; }

/* ─── Analytics bars ─────────────────────────────────────────── */
.section-title {
  font-size: 0.65rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 1rem;
  font-weight: 600;
}

.bar-row { margin-bottom: 1rem; }
.bar-row:last-child { margin-bottom: 0; }
.bar-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}
.bar-cat-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-2);
  font-weight: 500;
}
.bar-cat-emoji { font-size: 1.1rem; line-height: 1; }
.bar-amt { font-weight: 700; font-size: 0.875rem; }
.bar-pct {
  color: var(--text-3);
  font-weight: 500;
  font-size: 0.78rem;
  margin-left: 0.3rem;
}
.bar-track {
  height: 8px;
  background: var(--bg-input);
  border-radius: 100px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal) 0%, var(--teal-deep) 100%);
  border-radius: 100px;
  transition: width 0.55s cubic-bezier(.4,0,.2,1);
  min-width: 3px;
}

/* ─── Day sections ───────────────────────────────────────────── */
.day-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  margin-bottom: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.day-hdr {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.day-section.settled .day-hdr {
  cursor: pointer;
  opacity: 0.65;
  transition: opacity var(--t);
}
.day-section.settled .day-hdr:hover { opacity: 1; }
.day-section.settled .day-chevron {
  transition: transform var(--t);
}
.day-section.settled.collapsed .day-chevron {
  transform: rotate(90deg);
}

.day-label  { font-weight: 700; font-size: 0.9rem; letter-spacing: -0.01em; }
.day-total  { margin-left: auto; font-size: 0.85rem; font-weight: 600; color: var(--text-2); }
.day-chevron { font-size: 0.75rem; color: var(--text-3); }
.day-body   { padding: 0.25rem 1.25rem; }

/* ─── Expense cards ──────────────────────────────────────────── */
.expense-card {
  display: flex;
  align-items: center;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  gap: 0.85rem;
}
.expense-card:last-child { border-bottom: none; }
.exp-cat    { font-size: 1.35rem; flex-shrink: 0; }
.exp-info   { flex: 1; min-width: 0; }
.exp-title  {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.exp-meta   { display: block; font-size: 0.75rem; font-weight: 500; color: var(--text-2); margin-top: 0.15rem; }
.exp-note   { display: block; font-size: 0.72rem; color: var(--text-3); margin-top: 0.1rem; font-style: italic; }
.exp-right  { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.exp-amount { font-weight: 700; font-size: 0.95rem; letter-spacing: -0.01em; }
.btn-del {
  background: none; border: none;
  color: var(--text-3); font-size: 0.82rem;
  cursor: pointer; padding: 0.25rem 0.35rem;
  border-radius: 6px;
  transition: color var(--t), background var(--t);
}
.btn-del:hover { color: var(--danger); background: rgba(239,68,68,0.1); }

.settle-day-row {
  padding: 0.8rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}

/* Ended banner */
.ended-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.5rem;
  margin-bottom: 0.85rem;
  text-align: center;
  box-shadow: var(--shadow);
}
.ended-banner h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.ended-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-top: 0.85rem;
}
.ended-tile {
  background: var(--bg-input);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
}
.ended-tile-val   { font-weight: 700; font-size: 1.05rem; letter-spacing: -0.02em; }
.ended-tile-label { font-size: 0.7rem; font-weight: 500; color: var(--text-2); margin-top: 0.15rem; }

/* ─── Recorded payments ──────────────────────────────────────── */
.suggestion-row {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}
.suggestion-row:last-child { border-bottom: none; }
.sugg-text    { flex: 1; min-width: 0; font-weight: 500; }
.sugg-amount  { color: var(--accent); font-weight: 700; }
/* ─── Contacts quick-add ─────────────────────────────────────── */
.contacts-section {
  margin-bottom: 1.1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--border);
}
.contacts-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 0.55rem;
}
.contacts-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.contact-chip {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 0.32rem 0.85rem 0.32rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font);
  color: var(--text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: background var(--t), border-color var(--t), color var(--t);
}
.contact-chip::before {
  content: '+';
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.contact-chip:hover {
  background: var(--accent-bg);
  border-color: rgba(20,187,166,0.35);
  color: var(--accent);
}

/* ─── Members tab ────────────────────────────────────────────── */
.add-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}
.member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}
.member-row:last-of-type { border-bottom: none; }
.member-name { font-weight: 600; font-size: 0.9rem; }

/* ─── Activity feed ──────────────────────────────────────────── */
.activity-item {
  display: flex;
  gap: 0.85rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}
.activity-item:last-child { border-bottom: none; }
.activity-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 0.5rem;
  flex-shrink: 0;
}
.activity-desc { font-size: 0.875rem; font-weight: 500; flex: 1; }
.activity-time { font-size: 0.72rem; color: var(--text-3); margin-top: 0.15rem; }

/* ─── Split type selector ────────────────────────────────────── */
.split-type-row {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
  background: var(--bg-input);
  border-radius: 10px;
  padding: 3px;
}
.split-type-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-2);
  border-radius: 7px;
  padding: 0.48rem 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--t), color var(--t), box-shadow var(--t);
  text-align: center;
}
.split-type-btn.active {
  background: var(--bg-card);
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.split-equal-grid { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.5rem; }
.split-other-grid { display: grid; gap: 0.4rem; margin-top: 0.5rem; }
.split-person-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}
.split-person-name  { flex: 1; font-weight: 500; }
.split-person-input { width: 80px; text-align: right; font-size: 0.875rem; }
.split-person-unit  { font-size: 0.78rem; color: var(--text-2); min-width: 1.5rem; }
.split-person-share { font-size: 0.78rem; color: var(--text-2); min-width: 3rem; text-align: right; }
.split-remainder    { font-size: 0.8rem; color: var(--text-2); margin-top: 0.4rem; text-align: right; }
.split-remainder.error { color: var(--danger); }

/* ─── FAB ────────────────────────────────────────────────────── */
.fab {
  position: fixed;
  bottom: 1.75rem; right: 1.5rem;
  background: var(--accent);
  color: #0F172A;
  border: none;
  border-radius: 100px;
  padding: 0.82rem 1.6rem;
  font-size: 0.9rem;
  font-weight: 700;
  font-family: var(--font);
  letter-spacing: -0.01em;
  box-shadow: 0 4px 20px rgba(20,187,166,0.45), 0 1px 4px rgba(0,0,0,0.2);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--t), box-shadow var(--t), transform 0.1s;
  z-index: 50;
}
.fab:hover  { box-shadow: 0 6px 28px rgba(20,187,166,0.6), 0 2px 6px rgba(0,0,0,0.2); }
.fab:active { transform: scale(0.96); background: var(--accent-dark); }

/* ─── Modal ──────────────────────────────────────────────────── */
.modal {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 100;
  align-items: flex-end;
  justify-content: center;
  backdrop-filter: blur(6px);
}
.modal.open { display: flex; }

.modal-sheet {
  background: var(--bg-card);
  border-radius: 20px 20px 0 0;
  padding: 1.75rem 1.5rem 2.25rem;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp .2s cubic-bezier(.22,1,.36,1);
  border-top: 1px solid var(--border);
}
@keyframes slideUp {
  from { transform: translateY(28px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.modal-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}
.modal-close {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px; height: 32px;
  font-size: 0.9rem; cursor: pointer;
  color: var(--text-2);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--t), color var(--t);
}
.modal-close:hover { background: var(--bg-hover); color: var(--text); }

/* ─── Emoji picker ───────────────────────────────────────────── */
.emoji-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.4rem;
}
.emoji-btn {
  background: var(--bg-input);
  border: 2px solid transparent;
  border-radius: 10px;
  font-size: 1.4rem;
  width: 44px; height: 44px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--t), background var(--t);
  line-height: 1;
}
.emoji-btn:hover  { background: var(--bg-hover); }
.emoji-btn.selected {
  border-color: var(--accent);
  background: var(--accent-bg);
}

/* ─── Form elements ──────────────────────────────────────────── */
.form-group { margin-bottom: 1.15rem; }
.form-group label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.45rem;
}
input[type=text], input[type=email],
input[type=password], input[type=number],
input[type=url], input[type=date], select, textarea {
  width: 100%;
  padding: 0.72rem 0.95rem;
  border: 1.5px solid var(--border);
  border-radius: var(--r-el);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font);
  background: var(--bg-input);
  color: var(--text);
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
  outline: none;
  appearance: none;
}
textarea { resize: vertical; min-height: 70px; line-height: 1.5; }
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(20,187,166,0.15);
  background: var(--bg-card);
}
input:disabled { opacity: 0.5; cursor: not-allowed; }
.trip-date-fields { display:grid; grid-template-columns:1fr 1fr; gap:.75rem; }
@media (max-width: 599px) {
  .trip-date-fields { grid-template-columns:1fr; gap:0; }
}

.amount-currency-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 110px;
  gap: 0.5rem;
}

.currency-control {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.currency-control label {
  color: var(--text-2);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.currency-control select {
  width: auto;
  min-width: 155px;
  padding: 0.55rem 0.75rem;
}

.exp-converted {
  display: block;
  margin-top: 0.15rem;
  color: var(--text-3);
  font-size: 0.72rem;
  font-weight: 600;
}

.check-label {
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 0.3rem 0.75rem 0.3rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t), border-color var(--t);
  color: var(--text-2);
}
.check-label:has(input:checked) {
  background: var(--accent-bg);
  border-color: rgba(20,187,166,0.3);
  color: var(--accent);
}
.check-label input { accent-color: var(--accent); }

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.72rem 1.25rem;
  border-radius: var(--r-el);
  border: none;
  font-size: 0.9rem; font-weight: 700;
  letter-spacing: -0.01em;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--t), opacity var(--t), box-shadow var(--t), transform 0.1s;
}
.btn:active   { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #0F172A;
  width: 100%;
  box-shadow: 0 2px 10px rgba(20,187,166,0.3);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-dark);
  box-shadow: 0 4px 16px rgba(20,187,166,0.4);
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-2);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-h);
  color: var(--text);
}

.btn-danger {
  background: rgba(239,68,68,0.1);
  color: var(--danger);
  border: 1.5px solid rgba(239,68,68,0.2);
}
.btn-danger:hover:not(:disabled) {
  background: rgba(239,68,68,0.18);
  border-color: rgba(239,68,68,0.3);
}

.btn-sm   { padding: 0.44rem 0.9rem; font-size: 0.82rem; }
.btn-auto { width: auto; }

.btn-icon {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  padding: 0.65rem 0.8rem;
  border-radius: var(--r-el);
  font-size: 0.9rem;
  font-family: var(--font);
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--t), color var(--t), background var(--t);
}
.btn-icon:hover {
  border-color: var(--border-h);
  color: var(--text);
  background: var(--bg-hover);
}

.btn-link {
  background: none; border: none;
  color: var(--accent); font-weight: 600;
  font-family: var(--font); font-size: inherit;
  cursor: pointer; padding: 0;
}

.btn.loading::after {
  content: '';
  width: 14px; height: 14px;
  border: 2px solid rgba(15,23,42,0.25);
  border-top-color: #0F172A;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  margin-left: 0.4rem;
}
.btn-secondary.loading::after,
.btn-danger.loading::after {
  border-top-color: var(--text-2);
  border-color: var(--border);
}

/* ─── Toast ──────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 5.5rem; left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.65rem 1.35rem;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
  white-space: nowrap;
  z-index: 300;
  box-shadow: var(--shadow-md);
}
.toast.show  { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--danger); color: white; border-color: transparent; }
.toast.ok    { background: var(--accent); color: #0F172A; border-color: transparent; }

/* ─── Shake ──────────────────────────────────────────────────── */
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-5px); }
  40%      { transform: translateX(5px); }
  60%      { transform: translateX(-3px); }
  80%      { transform: translateX(3px); }
}
.shake { animation: shake .35s ease; border-color: var(--danger) !important; }

/* ─── Search ─────────────────────────────────────────────────── */
.search-input-wrap { position: relative; margin-bottom: 0.85rem; }
.search-input-wrap input { padding-left: 2rem; }
.search-icon {
  position: absolute;
  left: 0.75rem; top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
  color: var(--text-3);
  pointer-events: none;
}

/* ─── Donut chart ────────────────────────────────────────────── */
.cat-chart-layout {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 1.35rem;
  align-items: center;
}
.donut-outer {
  position: relative;
  width: 116px; height: 116px;
  flex-shrink: 0;
}
.donut-ring {
  width: 116px; height: 116px;
  border-radius: 50%;
  -webkit-mask: radial-gradient(transparent 38px, black 39px);
  mask: radial-gradient(transparent 38px, black 39px);
}
.donut-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.donut-total {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1;
}
.donut-sub {
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--text-3);
  margin-top: 0.2rem;
}
.cat-bars { flex: 1; min-width: 0; }
.bar-cat-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
@media (max-width: 400px) {
  .cat-chart-layout { grid-template-columns: 1fr; }
  .donut-outer { margin: 0 auto; }
}

/* ─── Member avatars ─────────────────────────────────────────── */
.member-avatar {
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
  letter-spacing: 0;
  line-height: 1;
}
/* ─── Admin ──────────────────────────────────────────────────── */
.admin-wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem 1.25rem; }
.admin-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.admin-header h1 { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.03em; }
.admin-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 1.1rem;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-num   {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--accent);
}
.stat-label { font-size: 0.72rem; font-weight: 600; color: var(--text-2); margin-top: 0.2rem; }
.admin-section-title { font-size: 1rem; font-weight: 700; margin: 0.5rem 0 0.75rem; letter-spacing: -0.02em; }
.admin-table-wrap {
  overflow-x: auto;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
}
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.admin-table th {
  text-align: left;
  padding: 0.65rem 0.9rem;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-2);
  background: var(--bg-input);
  border-bottom: 1px solid var(--border);
}
.admin-table td { padding: 0.65rem 0.9rem; border-bottom: 1px solid var(--border); }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg-hover); }
.admin-notice { padding: 2rem; text-align: center; color: var(--text-2); }
.admin-notice.error { color: var(--danger); }
#admin-loading { text-align: center; padding: 2rem; color: var(--text-2); display: none; }
.admin-badge { font-size: 0.65rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: 100px; }
.admin-badge.active  { background: var(--accent-bg); color: var(--accent); }
.admin-badge.ended   { background: rgba(239,68,68,0.12); color: var(--danger); }
.admin-badge.guest   { background: rgba(245,158,11,0.12); color: var(--warn); }

/* ─── Desktop ────────────────────────────────────────────────── */
@media (min-width: 600px) {
  .trip-cards-grid { grid-template-columns: 1fr 1fr; }
  .app-header { padding: 0 2.5rem; }
  .trips-content { padding: 2.25rem 2.5rem; }
}
@media (min-width: 768px) {
  .overview-grid { grid-template-columns: repeat(4, 1fr); }
  .tab-panel     { max-width: 800px; margin: 0 auto; }
  .dash-header   { padding-left: 1.5rem; padding-right: 1.5rem; }
  .modal-sheet   { border-radius: 20px; margin: auto; }
  .modal         { align-items: center; }
  .fab           { right: calc(50% - 400px + 1.5rem); }
  .toast         { bottom: 2rem; }
  .admin-stats   { grid-template-columns: repeat(4, 1fr); }
  .stats-row     { gap: 1rem; }
}
@media (max-width: 480px) {
  .app-header    { padding: 0 1.25rem; }
  .trips-content { padding: 1.5rem 1.1rem; }
  .dash-header   { padding: 0.9rem 1.1rem 0; }
  .tab-panel     { padding: 1.1rem; }
  .trip-card     { padding: 1.1rem; }
  .stat-tile-num { font-size: 1.7rem; }
  .greeting-title { font-size: 1.45rem; }
  .auth-card     { padding: 2rem 1.5rem; border-radius: 16px; }
}

/* Stage 1: exact persistent application shell from the iOS handoff */
.welcome-screen { min-height: 100dvh; background: #FAFAFA; color: #0B2B2A; }
.welcome-screen.active { display: grid; place-items: center; }
.welcome-content { width: min(100%, 520px); min-height: 100dvh; padding: max(28px, env(safe-area-inset-top)) 20px max(28px, env(safe-area-inset-bottom)); display: flex; flex-direction: column; }
.welcome-brand { display:flex; align-items:center; gap:10px; font:500 22px/1 'Manrope',sans-serif; letter-spacing:.005em; }
.welcome-brand svg { width:40px; height:40px; }
.welcome-content h1 { margin-top:36px; color:#0B2B2A; font:700 clamp(34px,9vw,42px)/1.12 'Manrope',sans-serif; letter-spacing:-.015em; }
.welcome-content > p { margin-top:14px; color:#6B7A78; font:400 16px/1.55 'Public Sans',sans-serif; }
.welcome-content > img { width:100%; min-height:220px; max-height:330px; margin:28px 0 24px; object-fit:cover; border-radius:20px; }
.welcome-actions { margin-top:auto; display:grid; gap:6px; text-align:center; }
.welcome-actions button { width:100%; border:0; background:transparent; cursor:pointer; }
.welcome-actions .btn-primary { background:#0EA5A0; }
.welcome-link { color:#0B7C78; font:600 16px 'Public Sans',sans-serif; }
.welcome-guest { color:#8A9694; font:500 14px 'Public Sans',sans-serif; }

.app-bottom-nav {
  position:fixed; z-index:100; left:50%; right:auto; bottom:0;
  display:none; grid-template-columns:repeat(4,1fr);
  width:min(100%, 760px); min-height:78px;
  padding:8px 14px max(10px, env(safe-area-inset-bottom));
  transform:translateX(-50%);
  border:0; border-top:1px solid #ECECE8; border-radius:0;
  background:#FFFFFF; box-shadow:none; backdrop-filter:none;
}
.app-bottom-nav.visible,
body[data-screen="trips"] .app-bottom-nav,
body[data-screen="dashboard"] .app-bottom-nav,
body[data-screen="profile"] .app-bottom-nav { display:grid; }
.app-bottom-nav button { display:flex; min-width:0; min-height:58px; padding:0; flex-direction:column; align-items:center; justify-content:center; gap:3px; border:0; border-radius:0; background:transparent; color:#8A9694; font:600 11px/1 'Public Sans',sans-serif; cursor:pointer; }
.app-bottom-nav button b { color:inherit; font:inherit; }
.app-bottom-nav .nav-icon { display:grid; place-items:center; width:54px; height:30px; margin:0; border-radius:15px; color:#ADB8B6; background:transparent; }
.app-bottom-nav svg { width:22px; height:22px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.app-bottom-nav button.active { color:#0B7C78; background:transparent; }
.app-bottom-nav button.active .nav-icon { color:#0EA5A0; background:#E6F6F4; }
#screen-trips,#screen-dashboard,#screen-profile { padding-bottom:calc(78px + env(safe-area-inset-bottom)); }
.dash-content { padding-bottom:calc(78px + env(safe-area-inset-bottom)); }
.fab { bottom:calc(92px + env(safe-area-inset-bottom)); }
@media (min-width:761px) {
  .app-bottom-nav { bottom:16px; border:1px solid #ECECE8; border-radius:20px; }
  #screen-trips,#screen-dashboard,#screen-profile { padding-bottom:112px; }
}

/* iOS handoff — in-app information architecture */
body { padding-bottom: 0; }

.overview-hero { padding: clamp(1.4rem, 4vw, 2.5rem); margin-bottom: 1rem; border-radius: 26px; color: white; background: linear-gradient(135deg, #0B2B2A, #0B7C78); }
.overview-hero span, .overview-hero small { display: block; color: rgba(255,255,255,.72); }
.overview-hero strong { display: block; margin: .3rem 0; font: 800 clamp(2.5rem, 8vw, 4.5rem) var(--heading); letter-spacing: -.055em; }
.overview-grid { grid-template-columns: repeat(3, 1fr); }
.overview-grid .ov-tile:first-child { grid-column: auto; background: var(--surface); }
.overview-actions { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin: 1rem 0; }
.overview-actions button { display:flex; justify-content:space-between; padding: 1rem 1.1rem; border:1px solid var(--border); border-radius:16px; background:var(--surface); color:var(--text); font-weight:750; cursor:pointer; }
.overview-actions span { color: var(--accent); font-size: 1.2rem; }
.day-bars { display:flex; align-items:flex-end; min-height:190px; gap:.75rem; padding-top:1.5rem; overflow-x:auto; }
.day-bar-item { display:grid; grid-template-rows:20px 130px 22px; flex:1; min-width:58px; text-align:center; color:var(--text-3); font-size:.68rem; }
.day-bar-value { color:var(--text-2); font-weight:700; }
.day-bar { display:flex; align-items:flex-end; width:32px; height:120px; margin:auto; border-radius:10px; background:var(--bg); overflow:hidden; }
.day-bar i { display:block; width:100%; border-radius:10px; background:linear-gradient(#14BBA6,#0B7C78); }
.expense-filter-row { display:flex; gap:.5rem; padding:.25rem 0 1rem; overflow-x:auto; }
.filter-chip { flex:0 0 auto; padding:.6rem .9rem; border:1px solid var(--border); border-radius:999px; background:var(--surface); color:var(--text-2); font-weight:700; cursor:pointer; }
.filter-chip.active { border-color:var(--accent); background:var(--accent); color:white; }

.section-heading { display:flex; align-items:flex-end; justify-content:space-between; gap:1rem; margin-bottom:1.2rem; }
.section-heading h2, .settings-group h2 { margin:.15rem 0 0; font-family:var(--heading); letter-spacing:-.035em; }
.eyebrow { color:var(--accent); font-size:.7rem; font-weight:800; letter-spacing:.14em; text-transform:uppercase; }
.segmented-control { display:grid; grid-template-columns:1fr 1fr; max-width:420px; margin-bottom:1rem; padding:4px; background:var(--bg-2); border-radius:14px; }
.segmented-control button { padding:.7rem; border:0; border-radius:11px; background:transparent; color:var(--text-2); font-weight:750; cursor:pointer; }
.segmented-control button.active { background:var(--surface); color:var(--accent); box-shadow:0 2px 8px rgba(11,43,42,.08); }
.analytics-grid { display:grid; grid-template-columns:minmax(0,1.7fr) minmax(240px,.7fr); gap:1rem; }
.analytics-chart { min-height:380px; }
.insight-stack { display:grid; gap:1rem; }
.insight-card { padding:1.25rem; border:1px solid #BEE7E3; border-radius:20px; background:var(--accent-bg); }
.insight-card span,.insight-card small { display:block; color:var(--text-2); }
.insight-card strong { display:block; margin:.35rem 0; color:var(--accent-deep); font:800 1.8rem var(--heading); }
.insight-card.negative { border-color:#F4C7C7; background:#FFF0F0; }
.insight-card.negative strong { color:#C44747; }

.members-layout { display:grid; grid-template-columns:minmax(0,1.5fr) minmax(280px,.8fr); gap:1rem; }
.split-member-row { display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:.8rem; padding:.8rem 0; border-bottom:1px solid var(--border); }
.split-member-row:last-child { border:0; }
.split-member-row strong,.split-member-row span { display:block; }
.split-member-row span { color:var(--text-3); font-size:.77rem; margin-top:.15rem; }
.split-member-row em { font-style:normal; color:var(--text-3); font-weight:750; font-size:.78rem; }
.settlement-card { display:flex; align-items:center; justify-content:space-between; gap:1rem; padding:.9rem 0; border-bottom:1px solid var(--border); }
.settlement-card strong,.settlement-card span { display:block; }.settlement-card span { margin-top:.2rem; color:var(--accent); font-weight:800; }
.settlement-card button { padding:.6rem .8rem; border:0; border-radius:10px; background:var(--accent); color:#fff; font-weight:750; cursor:pointer; }
.all-settled-card { padding:1rem; border-radius:16px; background:#EAF8F1; color:#16825D; font-weight:750; }

.profile-header { display:grid; grid-template-columns:1fr auto 1fr; align-items:center; max-width:1080px; margin:auto; padding:1.1rem 1.25rem; }
.profile-content { max-width:900px; margin:auto; padding:1rem 1.25rem 3rem; }
.profile-identity { display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:1.2rem; padding:1.5rem; margin-bottom:1rem; border-radius:24px; background:linear-gradient(135deg,var(--accent-bg),#FEF3E2); }
.profile-avatar { display:grid; place-items:center; width:76px; height:76px; border-radius:24px; color:white; background:var(--accent); font:800 1.35rem var(--heading); }
.profile-identity h1 { margin:.1rem 0; font:800 1.7rem var(--heading); }.profile-identity p { color:var(--text-2); }
.profile-grid { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.settings-group { overflow:hidden; padding:1rem; border:1px solid var(--border); border-radius:22px; background:var(--surface); }
.settings-group h2 { padding:.2rem .4rem .8rem; font-size:1rem; }
.settings-group button,.settings-group a { display:flex; align-items:center; justify-content:space-between; width:100%; padding:.9rem .4rem; border:0; border-top:1px solid var(--border); background:transparent; color:var(--text); text-align:left; text-decoration:none; cursor:pointer; }
.settings-group button > span,.settings-group a > span { display:grid; grid-template-columns:34px 1fr; }.settings-group i { grid-row:1/3; display:grid; place-items:center; width:28px; height:28px; border-radius:9px; background:var(--accent-bg); color:var(--accent); font-style:normal; }
.settings-group b,.settings-group small { display:block; }.settings-group small { margin-top:.15rem; color:var(--text-3); }.settings-group em { color:var(--text-3); font-style:normal; text-transform:capitalize; }
.settings-group .logout-row b,.settings-group .logout-row i { color:#C44747; }

@media (max-width: 760px) {
  .analytics-grid,.members-layout,.profile-grid { grid-template-columns:1fr; }
  .profile-identity { grid-template-columns:auto 1fr; }.profile-identity > button { grid-column:1/-1; width:100%; }
  .overview-grid { grid-template-columns:repeat(3,1fr); }.ov-tile { padding:.85rem; }.ov-tile-icon { display:none; }.ov-tile-val { font-size:1.15rem; }
  .overview-actions { grid-template-columns:1fr; }
  .dash-header { top:0; }
  .tabs { padding-inline:.75rem; }
  .tab-btn { white-space:nowrap; }
}

/* ══════════════════════════════════════════════════════════════
   2026 brand system — Claude Design handoff, adapted for web
   ══════════════════════════════════════════════════════════════ */
:root {
  --teal: #0EA5A0;
  --teal-dark: #0B7C78;
  --teal-deep: #0B7C78;
  --bg: #091F1E;
  --bg-card: #102C2A;
  --bg-input: #173735;
  --bg-hover: #1B403D;
  --accent: #0EA5A0;
  --accent-dark: #0B7C78;
  --accent-bg: rgba(14, 165, 160, .14);
  --accent-glow: rgba(14, 165, 160, .18);
  --text: #F7FAF9;
  --text-2: #A9B9B7;
  --text-3: #7F918E;
  --border: rgba(236, 236, 232, .13);
  --border-h: rgba(14, 165, 160, .68);
  --danger: #F59E0B;
  --warn: #F59E0B;
  --r-card: 16px;
  --r-el: 14px;
  --font: 'Public Sans', system-ui, sans-serif;
  --heading: 'Manrope', system-ui, sans-serif;
  --mono: 'Manrope', system-ui, sans-serif;
  --shadow: none;
  --shadow-md: none;
  --shadow-lg: none;
  --t: .2s ease;
}

body.light {
  --bg: #FAFAFA;
  --bg-card: #FFFFFF;
  --bg-input: #FFFFFF;
  --bg-hover: #F4F7F6;
  --text: #0B2B2A;
  --text-2: #6B7A78;
  --text-3: #8A9694;
  --border: #ECECE8;
  --border-h: #0EA5A0;
  --accent-bg: #E6F6F4;
  --accent-glow: rgba(14, 165, 160, .12);
  --shadow: none;
  --shadow-md: none;
  --shadow-lg: none;
}

body {
  letter-spacing: -.005em;
  background-image: radial-gradient(circle at 85% -15%, var(--accent-bg), transparent 32rem);
  background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6,
.logo, .greeting-title, .stat-tile-num, .trip-name, .dash-title,
.ov-tile-val, .balance-amount, .donut-total, .modal-title,
.ended-tile-val, .stat-num, .section-title, .amount-currency-row input {
  font-family: var(--heading);
}

.logo {
  font-weight: 500;
  letter-spacing: .005em;
  gap: 0;
}
.logo::before {
  content: '';
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  background:
    radial-gradient(circle at 64% 36%, #F59E0B 0 28%, transparent 29%),
    radial-gradient(circle at 36% 64%, #0EA5A0 0 28%, transparent 29%);
  margin-right: .5rem;
}
.logo-pin { display: none; }
.logo-trip, .logo-cash { color: var(--text); }
.auth-logo-text { font-size: 1.75rem; }
.auth-logo-text::before { width: 42px; height: 42px; flex-basis: 42px; }

button, input, select, textarea { font-family: var(--font); }
button, a, input, select { min-height: 44px; }
input, select, textarea {
  border-width: 1px;
  border-radius: 14px;
}
input:focus, select:focus, textarea:focus {
  border-color: #0EA5A0;
  box-shadow: 0 0 0 3px var(--accent-bg);
}
.btn {
  min-height: 54px;
  border-radius: 14px;
  font-weight: 500;
}
.btn-sm { min-height: 44px; }
.btn-primary { background: #0EA5A0; color: #FFFFFF; }
.btn-primary:hover:not(:disabled) { background: #0B7C78; }
.btn-secondary { border-width: 1px; }
.btn-danger {
  color: #B45309;
  background: #FEF3E2;
  border-color: rgba(245, 158, 11, .28);
}

.card, .stat-tile, .trip-card, .ov-tile, .auth-card, .modal-sheet,
.admin-table-wrap, .stat-card, .ended-banner {
  border: 1px solid var(--border);
  box-shadow: none;
}
.card, .trip-card, .stat-tile, .ov-tile { border-radius: 16px; }

/* Auth / welcome adaptation */
#screen-auth {
  display: none;
  grid-template-columns: minmax(310px, 1fr) minmax(340px, 440px);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  padding: clamp(1.25rem, 4vw, 4rem);
  max-width: 1280px;
  margin: 0 auto;
}
#screen-auth.active { display: grid; }
#screen-auth::before { display: none; }
.auth-intro {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.auth-intro-copy { max-width: 620px; }
.auth-intro-kicker {
  display: inline-block;
  color: #0B7C78;
  background: #E6F6F4;
  border-radius: 999px;
  padding: .45rem .8rem;
  margin-bottom: 1rem;
  font-weight: 600;
  font-size: .82rem;
}
.auth-intro h1 {
  font-size: clamp(2.5rem, 5vw, 4.75rem);
  line-height: 1.02;
  letter-spacing: -.045em;
  max-width: 760px;
}
.auth-intro p {
  color: var(--text-2);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  margin-top: 1rem;
}
.auth-intro img {
  width: 100%;
  max-height: 410px;
  object-fit: cover;
  object-position: center 45%;
  border-radius: 20px;
  border: 1px solid var(--border);
}
.auth-card { padding: clamp(1.5rem, 4vw, 2.5rem); }
.auth-tabs { border: 1px solid var(--border); border-radius: 14px; }
.auth-tab-btn { min-height: 44px; border-radius: 11px; }
.auth-tab-btn.active { box-shadow: none; }

/* Dashboard */
.app-header {
  height: 76px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}
.trips-content { max-width: 1080px; }
.trips-greeting {
  padding: clamp(1.35rem, 4vw, 2.4rem);
  border: 1px solid var(--border);
  border-radius: 20px;
  background: linear-gradient(125deg, var(--accent-bg), color-mix(in srgb, #FEF3E2 55%, var(--bg-card)));
}
.greeting-title {
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  letter-spacing: -.035em;
}
.stats-row { gap: .75rem; }
.stat-tile { padding: 1.15rem; text-align: left; }
.stat-tile-icon { background: var(--accent-bg); border-radius: 12px; padding: .45rem; }
.stat-tile-num { color: var(--text); font-variant-numeric: tabular-nums; }
.section-hdr h2 { font-size: 1.35rem; }
.trip-card { padding: 1rem; transition: border-color var(--t), transform var(--t); }
.trip-card:hover { transform: translateY(-2px); border-color: #0EA5A0; }
.trip-emoji {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, #E6F6F4, #FEF3E2);
}

/* Active trip */
.dash-header {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(18px);
  border-color: var(--border);
}
.dash-title { font-weight: 700; letter-spacing: -.025em; }
.tabs { gap: .25rem; overflow-x: auto; scrollbar-width: none; }
.tab-btn { min-height: 44px; border-radius: 12px 12px 0 0; }
.tab-btn.active { color: #0B7C78; background: var(--accent-bg); }
.tab-btn.active::after { background: #0EA5A0; }
.dash-content { max-width: 1080px; }
.overview-grid { gap: .75rem; }
.ov-tile:first-child {
  grid-column: span 2;
  border-radius: 20px;
  background: var(--accent-bg);
}
.ov-tile:first-child .ov-tile-val {
  color: #0B7C78;
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 800;
}
.ov-tile-val, .exp-amount, .balance-amount, .donut-total {
  font-variant-numeric: tabular-nums;
}
.fab { background: #0EA5A0; color: white; border-radius: 14px; box-shadow: none; }
.fab:hover { background: #0B7C78; }
.modal { backdrop-filter: blur(5px); }
.modal-sheet { border-radius: 20px; }
.split-type-btn.active { background: #0B2B2A; color: #FFFFFF; }
.day-header, .card-label { letter-spacing: .08em; }
.badge { border-radius: 999px; }
.badge-creator, .badge-member { background: var(--accent-bg); color: #0B7C78; }
.toast { box-shadow: none; }
.toast.ok { background: #0B2B2A; color: #FFFFFF; }

/* Legal and admin surfaces */
.legal-page { max-width: 760px; }
.legal-page-header { padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.legal-page h1 { font-family: var(--heading); letter-spacing: -.035em; }
.admin-header h1 { letter-spacing: -.025em; }

@media (max-width: 800px) {
  #screen-auth { grid-template-columns: 1fr; gap: 1.25rem; }
  .auth-intro { gap: 1rem; }
  .auth-intro-copy { text-align: center; margin: 0 auto; }
  .auth-intro h1 { font-size: clamp(2.25rem, 9vw, 3.5rem); }
  .auth-intro img { max-height: 260px; }
  .auth-card { max-width: 560px; margin: 0 auto; }
}

@media (max-width: 480px) {
  #screen-auth { padding: 1rem; align-content: start; }
  .auth-intro h1 { font-size: 2.2rem; }
  .auth-intro p { font-size: 1rem; }
  .auth-intro img { height: 170px; }
  .app-header { height: auto; min-height: 68px; padding-block: .6rem; }
  .header-user { display: none; }
  .trips-content, .tab-panel { padding-inline: 1rem; }
  .stats-row { grid-template-columns: repeat(3, 1fr); }
  .stat-tile { padding: .75rem; }
  .stat-tile-icon { display: none; }
  .stat-tile-num { font-size: 1.45rem; }
  .stat-tile-label { font-size: .65rem; }
  .overview-grid { grid-template-columns: 1fr 1fr; }
  .ov-tile:first-child { grid-column: 1 / -1; }
  .modal-sheet { border-radius: 20px 20px 0 0; }
}

/* Stage 2: high-fidelity expense and settings surfaces */
.trips-greeting { display:flex; align-items:flex-end; justify-content:space-between; gap:16px; min-height:120px; margin-bottom:22px; }
.expense-status { display:inline-flex; align-items:center; justify-content:center; min-height:22px; margin-top:4px; padding:2px 7px; border-radius:20px; font-size:11px; font-weight:600; }.expense-status.owed { color:#0B7C78; background:#E6F6F4; }.expense-status.owe { color:#B45309; background:#FEF3E2; }.expense-status.neutral { color:#6B7A78; background:#F1F1ED; }
.visually-hidden { position:absolute!important; width:1px!important; height:1px!important; padding:0!important; margin:-1px!important; overflow:hidden!important; clip:rect(0,0,0,0)!important; white-space:nowrap!important; border:0!important; }
.expense-amount-card { margin-bottom:20px; padding:18px; border:1px solid var(--border); border-radius:20px; background:var(--bg-card); }
.expense-amount-card > label { display:block; margin-bottom:10px; color:var(--text-3); font-size:13px; }
.expense-amount-card .amount-currency-row { display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:8px; }
.expense-amount-card .amount-currency-row > span { font:800 32px/1 var(--heading); }
.expense-amount-card .amount-currency-row input { min-width:0; height:54px; padding:0; border:0; background:transparent; color:var(--text); font:800 38px/1 var(--heading); box-shadow:none; }
.expense-amount-card .amount-currency-row select { width:82px; height:44px; padding:0 10px; border-radius:12px; background:var(--bg-input); font-weight:600; }
.expense-category-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.expense-category-grid button { min-height:76px; padding:10px 6px; border:1px solid var(--border); border-radius:14px; background:var(--bg-card); color:var(--text-2); cursor:pointer; }
.expense-category-grid button i,.expense-category-grid button span { display:block; }
.expense-category-grid button i { width:30px; height:30px; margin:0 auto 5px; border-radius:9px; background:var(--accent-bg); color:var(--accent-dark); font-style:normal; line-height:30px; }
.expense-category-grid button span { font-size:12px; font-weight:600; }
.expense-category-grid button.active { border-color:var(--cat-color,#0EA5A0); background:var(--cat-bg,#E6F6F4); color:var(--text); }
.expense-category-grid button[data-category="hotel"] { --cat-color:#0EA5A0;--cat-bg:#E6F6F4; }.expense-category-grid button[data-category="transport"] { --cat-color:#0B7C78;--cat-bg:#E6F6F4; }.expense-category-grid button[data-category="food"] { --cat-color:#F59E0B;--cat-bg:#FEF3E2; }.expense-category-grid button[data-category="activities"] { --cat-color:#C97F3D;--cat-bg:#F8EEE5; }.expense-category-grid button[data-category="drinks"] { --cat-color:#4A8FA8;--cat-bg:#E9F2F5; }.expense-category-grid button[data-category="other"] { --cat-color:#A8A29A;--cat-bg:#F1F1ED; }
.expense-detail-rows { padding:0 16px; margin-bottom:18px; border:1px solid var(--border); border-radius:16px; background:var(--bg-card); }
.expense-detail-rows .form-group { display:flex; align-items:center; min-height:58px; margin:0; border-bottom:1px solid var(--border); }.expense-detail-rows .form-group:last-child { border:0; }
.expense-detail-rows label { flex:0 0 90px; margin:0; }.expense-detail-rows input { width:90px; margin-left:auto; text-align:right; border:0; background:transparent; }
.expense-payer-chips { display:flex; gap:6px; margin-left:auto; overflow-x:auto; }.expense-payer-chips button { min-height:36px; padding:0 12px; border:1px solid var(--border); border-radius:18px; background:var(--bg-card); color:var(--text-2); white-space:nowrap; }.expense-payer-chips button.active { border-color:#0EA5A0; background:#E6F6F4; color:#0B7C78; }
.split-equal-grid { grid-template-columns:1fr; gap:8px; }
.split-member-card { display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:10px; min-height:58px; padding:8px 12px; border:1px solid var(--border); border-radius:14px; background:var(--bg-card); cursor:pointer; }
.split-member-card input { position:absolute; opacity:0; pointer-events:none; }.split-member-card span,.split-member-card small { display:block; }.split-member-card small { color:var(--text-3); font-size:12px; font-weight:600; }.split-member-card > i { display:grid; place-items:center; width:24px; height:24px; border:1px solid var(--border); border-radius:50%; color:var(--text-3); font-style:normal; }.split-member-card.active { border-color:#0EA5A0; background:var(--accent-bg); }.split-member-card.active > i { border-color:#0EA5A0; background:#0EA5A0; color:white; }
.profile-title { margin:4px 0 18px; font-size:26px; }.profile-edit { min-height:36px; padding:0 14px; border:1px solid var(--border); border-radius:20px; background:var(--bg-card); color:var(--accent-dark); }
.auth-back { position:absolute; top:16px; left:16px; width:44px; min-height:44px; border:0; background:transparent; color:var(--text); font-size:34px; line-height:1; }.auth-card { position:relative; }.auth-mode-title { margin:0 0 18px; font-size:26px; }.terms-check { display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:start; margin:4px 0 18px; color:var(--text-2); font-size:13px; }.terms-check input { width:20px; min-height:20px; accent-color:#0EA5A0; }
.profile-identity { background:var(--bg-card); border:1px solid var(--border); }.profile-avatar { border-radius:50%; background:linear-gradient(140deg,#E6F6F4,#FEF3E2); color:#0B7C78; }
.settings-group h2 { color:var(--text-3); font-size:13px; letter-spacing:.06em; text-transform:uppercase; }.settings-group button,.settings-group a,.settings-select-row { min-height:54px; }.settings-select-row { display:flex; align-items:center; justify-content:space-between; padding:.4rem; border-top:1px solid var(--border); }.settings-select-row select { width:auto; max-width:160px; padding:0 10px; border:0; background:transparent; color:var(--text-2); text-align:right; }
.profile-support { margin-top:16px; overflow:hidden; border:1px solid var(--border); border-radius:16px; background:var(--bg-card); }.profile-support a,.profile-support button { display:flex; align-items:center; justify-content:space-between; width:100%; min-height:54px; padding:0 16px; border:0; border-bottom:1px solid var(--border); background:transparent; color:var(--text); text-decoration:none; }.profile-support > :last-child { border-bottom:0; }.profile-logout { width:100%; min-height:54px; margin-top:14px; border:0; background:transparent; color:#B45309; font-weight:600; }
.insight-card.negative { border-color:#F3D3A0; background:#FEF3E2; }.insight-card.negative strong { color:#B45309; }
.overview-hero { color:var(--text); border:1px solid var(--border); background:var(--bg-card); }.overview-hero span,.overview-hero small { color:var(--text-3); }.overview-hero strong { color:#0B7C78; }
.trip-summary-top { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; }.trip-summary-top > div > span,.trip-budget span { display:block; margin-bottom:6px; }.trip-budget { text-align:right; }.trip-budget b { font:600 22px var(--heading); }.budget-track { height:10px; margin-top:18px; overflow:hidden; border-radius:6px; background:#EDF1F0; }.budget-track i { display:block; height:100%; border-radius:6px; background:#0EA5A0; }.budget-caption { display:flex; justify-content:space-between; gap:12px; margin-top:8px; color:var(--text-2); font-size:13px; }.budget-caption > b { color:#0B7C78; }.section-block { margin-top:20px; }.section-block > .section-title { margin-bottom:10px; }.day-spending-list,.category-list { padding:4px 16px; border:1px solid var(--border); border-radius:16px; background:var(--bg-card); }.day-spending-row { display:grid; grid-template-columns:52px 1fr 76px; align-items:center; gap:12px; min-height:46px; border-bottom:1px solid var(--border); }.day-spending-row:last-child,.category-list-row:last-child { border:0; }.day-spending-row > span { color:var(--text-3); font-size:12px; }.day-spending-row > div { height:8px; overflow:hidden; border-radius:5px; background:#EDF1F0; }.day-spending-row i { display:block; height:100%; border-radius:5px; background:#0EA5A0; }.day-spending-row strong { text-align:right; font:600 13px var(--heading); }.category-list-row { display:grid; grid-template-columns:32px 1fr 40px 82px; align-items:center; gap:10px; min-height:54px; border-bottom:1px solid var(--border); }.category-list-row i { display:grid; place-items:center; width:30px; height:30px; border-radius:9px; color:var(--cat); background:color-mix(in srgb,var(--cat) 12%,white); font-style:normal; }.category-list-row small { color:var(--text-3); text-align:right; }.category-list-row strong { text-align:right; font:600 14px var(--heading); }
.add-member-dashed { width:100%; min-height:50px; margin:10px 0 22px; border:1.5px dashed #CBD3D1; border-radius:16px; background:transparent; color:#0B7C78; font-weight:600; }.balance-section-heading { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:10px; color:var(--text-3); font:600 13px var(--heading); letter-spacing:.06em; text-transform:uppercase; }.balance-section-heading small { font:400 12px var(--font); letter-spacing:0; text-transform:none; }.balance-card-list { display:grid; gap:10px; }.balance-direction-card { display:grid; grid-template-columns:1fr auto; gap:4px 12px; padding:14px 16px; border:1px solid var(--border); border-left:3px solid #0EA5A0; border-radius:16px; background:var(--bg-card); }.balance-direction-card.owe { border-left-color:#F59E0B; }.balance-direction-card div span { display:block; color:var(--text-3); font-size:12px; }.balance-direction-card em { color:#0B7C78; font:700 18px var(--heading); font-style:normal; }.balance-direction-card.owe em { color:#B45309; }.balance-direction-card button { grid-column:1/-1; justify-self:start; min-height:34px; padding:0; border:0; background:transparent; color:#0B7C78; font-weight:600; }.net-balance-card { display:flex; align-items:center; justify-content:space-between; margin-top:18px; padding:18px; border-radius:16px; color:#0B7C78; background:#E6F6F4; }.net-balance-card.owe { color:#B45309; background:#FEF3E2; }.net-balance-card span,.net-balance-card strong { display:block; }.net-balance-card strong { font:800 28px var(--heading); }.net-balance-card small { max-width:100px; text-align:right; }.settle-all-button { width:100%; min-height:54px; margin-top:18px; border:0; border-radius:14px; background:#0EA5A0; color:white; font-size:16px; }
@media (max-width:600px) {
  #modal-expense { align-items:stretch; }.modal.open#modal-expense .modal-sheet { width:100%; max-width:none; height:100dvh; max-height:none; padding:calc(16px + env(safe-area-inset-top)) 20px calc(18px + env(safe-area-inset-bottom)); border-radius:0; overflow-y:auto; }
  .profile-header { display:none; }.profile-content { padding-top:max(18px,env(safe-area-inset-top)); }.profile-grid { grid-template-columns:1fr; }
  #screen-auth { display:none; min-height:100dvh; padding:max(18px,env(safe-area-inset-top)) 20px max(18px,env(safe-area-inset-bottom)); background:var(--bg); }.auth-intro { display:none; }#screen-auth.active { display:block; }.auth-card { width:100%; max-width:440px; min-height:calc(100dvh - 40px); margin:auto; padding:70px 0 20px; border:0; background:transparent; }.auth-logo { justify-content:center; }.auth-tabs { margin:18px 0; }
}

/* Mobile viewport containment — prevent desktop controls from widening WKWebView */
@media (max-width: 599px) {
  html, body { width:100%; max-width:100%; overflow-x:hidden; overscroll-behavior:none; }
  input, select, textarea { font-size:16px!important; }
  .screen, #screen-trips, #screen-dashboard, #screen-profile { width:100%; max-width:100%; overflow-x:clip; }
  .app-header {
    width:100%; max-width:100%; height:auto;
    min-height:calc(58px + env(safe-area-inset-top));
    padding:max(10px,env(safe-area-inset-top)) 20px 10px;
  }
  .app-header .header-right { display:none; }
  .app-header .header-left { min-width:0; max-width:100%; }
  .app-header .logo { min-width:0; font-size:22px; }
  .trips-content { width:100%; max-width:100%; min-width:0; padding:20px; margin:0; overflow-x:clip; }
  .trips-greeting { width:100%; min-width:0; padding:20px; }
  .trips-greeting > div { min-width:0; }
  .trips-greeting .greeting-title { font-size:28px; overflow-wrap:anywhere; }
  .trips-greeting .btn { flex:0 0 108px; padding-inline:12px; white-space:normal; }
  .stats-row { width:100%; min-width:0; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; }
  .stat-tile { min-width:0; padding:14px 12px; overflow:hidden; }
  .stat-tile-num { font-size:24px; }
  .stat-tile-label { font-size:10px; letter-spacing:.04em; white-space:normal; }
  .section-hdr { width:100%; min-width:0; }
  .trip-cards-grid, .trip-card { width:100%; max-width:100%; min-width:0; }
  .trip-card { gap:12px; padding:12px; }
  .trip-emoji { width:48px; height:48px; font-size:28px; }
  .trip-right { min-width:0; max-width:38%; flex-direction:column; align-items:flex-end; gap:4px; }
  .trip-right strong { max-width:100%; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:14px; }
  .trip-name { font-size:15px; }
  .trip-meta { font-size:12px; }
  .dash-header, .dash-content, .tab-panel { width:100%; max-width:100%; min-width:0; }
  .dash-header { padding-top:max(12px,env(safe-area-inset-top)); }
  .dash-top { min-height:48px; }
  .dash-title { max-width:48%; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
  .overview-grid { grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; }
  .overview-grid .ov-tile { min-width:0; padding:12px 8px; text-align:center; }
  .overview-grid .ov-tile-label { font-size:10px; letter-spacing:.03em; }
  .overview-grid .ov-tile-val { font-size:clamp(13px,4vw,18px); overflow-wrap:anywhere; }
  #fab-add-expense { display:none!important; }
  .app-bottom-nav { left:0; right:0; width:100%; max-width:100%; transform:none; }
}

/* Native shell stability: match the current theme at the viewport edges and
   prevent the persistent tab bar from reverting to a light surface. */
html { background:var(--bg); overscroll-behavior:none; }
body { min-height:100dvh; overscroll-behavior:none; }
.app-bottom-nav {
  border-color:var(--border);
  background:var(--bg-card);
}
.app-bottom-nav button.active { color:var(--accent); }
.app-bottom-nav button.active .nav-icon {
  color:var(--accent);
  background:var(--accent-bg);
}