:root {
  --bg: #120c09;
  --bg-elevated: rgba(28, 18, 14, 0.72);
  --glass-border: rgba(255, 180, 120, 0.12);
  --text: #f8ede4;
  --muted: rgba(248, 237, 228, 0.62);
  --accent: #e8924f;
  --accent-soft: rgba(232, 146, 79, 0.18);
  --accent-glow: rgba(232, 146, 79, 0.35);
  --success: #6ecf8a;
  --danger: #e86a6a;
  --radius: 18px;
  --radius-sm: 12px;
  --nav-height: 72px;
  --page-gutter: 16px;
  --font: "Manrope", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  height: 100%;
  background: var(--bg);
}

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  min-height: 100dvh;
  overscroll-behavior-y: none;
  touch-action: manipulation;
}

.hidden { display: none !important; }

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
}

.orb-a {
  width: 280px;
  height: 280px;
  background: #e8924f;
  top: -60px;
  right: -40px;
}

.orb-b {
  width: 220px;
  height: 220px;
  background: #c45c3e;
  bottom: 20%;
  left: -80px;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.glass {
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius);
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.muted { color: var(--muted); margin: 0; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}

h1 { font-size: 1.65rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.05rem; }

html.is-standalone .topbar {
  padding-top: max(4px, env(safe-area-inset-top));
}

html.is-standalone .pin-gate {
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

/* PIN Gate */
.pin-gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  min-height: 100dvh;
  padding:
    max(24px, env(safe-area-inset-top))
    max(24px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom))
    max(24px, env(safe-area-inset-left));
}

.pin-card {
  position: relative;
  z-index: 1;
  width: min(100%, 380px);
  padding: 32px 24px;
  text-align: center;
}

.brand-mark {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 14px;
  background: linear-gradient(135deg, #e8924f 0%, #c45c3e 100%);
  box-shadow: 0 8px 32px var(--accent-glow);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 50%;
  border-top-color: transparent;
  transform: rotate(-45deg);
}

.brand-mark.sm {
  width: 36px;
  height: 36px;
  margin: 0;
  flex-shrink: 0;
}

.brand-mark.sm::after { inset: 9px; }

.pin-form {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.pin-form input,
.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--glass-border);
  background: rgba(0,0,0,0.25);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font: inherit;
  font-size: 1rem;
}

.pin-form button,
.primary-btn,
.secondary-btn,
.danger-btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.15s;
}

.pin-form button,
.primary-btn {
  background: linear-gradient(135deg, #e8924f, #c45c3e);
  color: #fff;
}

.secondary-btn {
  background: var(--accent-soft);
  color: var(--text);
  border: 1px solid var(--glass-border);
}

.danger-btn {
  background: rgba(232, 106, 106, 0.15);
  color: var(--danger);
  border: 1px solid rgba(232, 106, 106, 0.3);
}

button:active { transform: scale(0.98); }

.error-text {
  color: var(--danger);
  font-size: 0.85rem;
  min-height: 1.2em;
  margin: 8px 0 0;
}

/* App shell */
.app {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  box-sizing: border-box;
  padding:
    max(var(--page-gutter), env(safe-area-inset-top))
    max(var(--page-gutter), env(safe-area-inset-right))
    calc(var(--nav-height) + var(--page-gutter) + env(safe-area-inset-bottom))
    max(var(--page-gutter), env(safe-area-inset-left));
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0 16px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--bg-elevated);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
}

.view { animation: fadeIn 0.25s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.hero {
  padding: 20px;
  margin-bottom: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 16px;
}

.stat {
  text-align: center;
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.2);
}

.stat span {
  display: block;
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat strong {
  display: block;
  font-size: 1.25rem;
  margin-top: 4px;
  font-family: var(--font-display);
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.action-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.action-icon { font-size: 1.4rem; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 20px 0 12px;
}

.text-btn,
.back-btn {
  background: none;
  border: none;
  color: var(--accent);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.latest-card,
.chart-area {
  padding: 16px;
  min-height: 80px;
}

.empty-hint {
  text-align: center;
  padding: 20px 0;
}

.timeline-list {
  display: grid;
  gap: 12px;
}

.timeline-card {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  background: var(--bg-elevated);
  cursor: pointer;
  text-align: left;
  color: inherit;
  font: inherit;
  width: 100%;
}

.timeline-card img {
  width: 88px;
  height: 110px;
  object-fit: cover;
  border-radius: 10px;
  background: rgba(0,0,0,0.3);
}

.timeline-card .meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-card .date {
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.measure-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

/* Check-in form */
.checkin-form,
.settings-form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
}

.field-label {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
  margin: 0;
}

.date-card {
  padding: 16px;
  display: grid;
  gap: 12px;
}

.date-hint {
  font-size: 0.85rem;
  line-height: 1.45;
}

.timeline-hint {
  margin: -4px 0 14px;
  font-size: 0.85rem;
}

.date-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.date-pill {
  border: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.2);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 14px;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.date-pill.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.checkin-date-label {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.photo-slot {
  aspect-ratio: 3/4;
  border-radius: var(--radius-sm);
  border: 2px dashed var(--glass-border);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 4px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  background: rgba(0,0,0,0.2);
  padding: 10px 6px;
}

.photo-slot.has-image {
  border-style: solid;
  border-color: var(--accent);
}

.photo-slot.has-image .slot-label,
.photo-slot.has-image .slot-sublabel {
  display: none;
}

.slot-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  line-height: 1.25;
  position: relative;
  z-index: 1;
}

.slot-sublabel {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  text-align: center;
  position: relative;
  z-index: 1;
}

.photo-hint {
  font-size: 0.85rem;
  line-height: 1.45;
  margin: 0 0 10px;
}

.muted-inline {
  font-weight: 500;
  font-size: 0.78rem;
}

.field-hint {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

.sync-card {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.sync-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.sync-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
}

.sync-stat span {
  font-size: 0.82rem;
  color: var(--muted);
}

.sync-stat strong {
  font-family: var(--font-display);
  font-size: 1rem;
}

.sync-card a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.slot-preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.measure-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.measure-grid .field-label {
  grid-column: 1 / -1;
}

/* Detail view */
.detail-photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.detail-photo {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: rgba(0,0,0,0.3);
}

.detail-photo img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  display: block;
}

.detail-photo span {
  display: block;
  padding: 6px 10px;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: capitalize;
}

.detail-measures {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 16px 0;
}

.measure-item {
  padding: 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
}

.measure-item span { font-size: 0.72rem; color: var(--muted); display: block; }
.measure-item strong { font-size: 1.1rem; }

.detail-actions {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

/* Compare */
.compare-pickers {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.compare-col {
  text-align: center;
}

.compare-col img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.3);
}

.compare-col h4 {
  margin: 8px 0 4px;
  font-size: 0.9rem;
}

/* Charts */
.chart-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.chart-tab {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}

.chart-tab.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}

.mini-chart {
  height: 120px;
  position: relative;
}

.mini-chart svg {
  width: 100%;
  height: 100%;
}

.chart-label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 8px;
}

/* AI */
.insight-actions {
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}

.ai-diet-note {
  font-size: 0.82rem;
  line-height: 1.45;
  margin: 0 0 14px;
}

.ai-diet-note a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.ai-result {
  padding: 16px;
  margin: 16px 0;
  line-height: 1.6;
  font-size: 0.92rem;
}

.ai-result h1, .ai-result h2, .ai-result h3 {
  font-size: 1rem;
  margin: 12px 0 6px;
}

.ai-result ul {
  padding-left: 1.2em;
  margin: 8px 0;
}

.insights-history {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.insight-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: var(--bg-elevated);
}

.insight-card time {
  font-size: 0.72rem;
  color: var(--muted);
}

.insight-card p {
  margin: 8px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Bottom nav */
.bottom-nav-wrap {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  padding:
    0
    max(var(--page-gutter), env(safe-area-inset-right))
    env(safe-area-inset-bottom)
    max(var(--page-gutter), env(safe-area-inset-left));
  box-sizing: border-box;
  pointer-events: none;
}

.bottom-nav {
  pointer-events: auto;
  position: relative;
  width: min(100%, 480px);
  height: var(--nav-height);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr auto 1fr 1fr;
  align-items: center;
  padding: 0 8px;
  border-radius: 22px;
  background: rgba(18, 12, 9, 0.92);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: none;
  border: none;
  color: var(--muted);
  font: inherit;
  font-size: 0.62rem;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 4px;
}

.nav-btn.is-active { color: var(--accent); }

.fab-nav {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e8924f, #c45c3e);
  color: #fff !important;
  margin-top: -20px;
  box-shadow: 0 8px 24px var(--accent-glow);
}

.fab-nav span { display: none; }

/* Toast & loading */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--nav-height) + 24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(28, 18, 14, 0.95);
  border: 1px solid var(--glass-border);
  font-size: 0.85rem;
  z-index: 200;
  max-width: calc(100% - 32px);
  text-align: center;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.55);
  display: grid;
  place-items: center;
  gap: 12px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.positive { color: var(--success); }
.negative { color: var(--danger); }

@media (min-width: 520px) {
  .app {
    padding-top: max(20px, env(safe-area-inset-top));
  }
}