:root {
  /* Light theme defaults (prod-ready, high contrast). */
  --app-bg: #f7f8fb;
  --app-surface: rgba(255, 255, 255, 0.78);
  --app-surface-2: rgba(241, 244, 251, 0.92);
  --app-text: #0f172a;
  --app-muted: #64748b;
  --app-border: rgba(15, 23, 42, 0.10);
  --app-brand: #ff6a00;
  --app-accent: #14b8a6;
  --app-danger: #ef4444;
  --app-success: #16a34a;
  --app-warning: #f59e0b;

  --app-radius: 14px;
  --app-radius-pill: 999px;
  --app-shadow: 0 18px 42px rgba(15, 23, 42, 0.10);
  --app-glow: 0 0 0 1px rgba(255, 255, 255, 0.75) inset;
}

html[data-theme="dark"] {
  --app-bg: #0b1220;
  --app-surface: #0f1a2e;
  --app-surface-2: #132341;
  --app-text: #eaf0ff;
  --app-muted: #a9b4cc;
  --app-border: rgba(234, 240, 255, 0.12);
  --app-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

html,
body {
  background: radial-gradient(circle at 15% 0%, rgba(255, 106, 0, 0.10), transparent 40%),
    radial-gradient(circle at 100% 5%, rgba(20, 184, 166, 0.08), transparent 38%),
    var(--app-bg);
  color: var(--app-text);
}

html[data-theme="dark"] body {
  background: radial-gradient(circle at 10% 0%, rgba(255, 106, 0, 0.18), transparent 38%),
    radial-gradient(circle at 100% 0%, rgba(20, 184, 166, 0.12), transparent 34%),
    var(--app-bg);
}

a {
  color: inherit;
}

.app-main {
  padding-top: 72px; /* sticky top bar */
  padding-bottom: 84px; /* bottom nav */
}

.app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px;
}

@media (min-width: 992px) {
  .app-shell {
    padding: 24px;
  }
}

.app-card {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  box-shadow: var(--app-shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.app-card.app-card-soft {
  background: var(--app-surface-2);
}

.app-card.app-card-glass {
  box-shadow: var(--app-shadow), var(--app-glow);
}

.app-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 3000;
  background: rgba(255, 255, 255, 0.75);
  border-bottom: 1px solid var(--app-border);
  backdrop-filter: blur(16px);
}

html[data-theme="dark"] .app-topbar {
  background: rgba(11, 18, 32, 0.72);
}

.app-pill {
  border-radius: var(--app-radius-pill);
}

.app-muted {
  color: var(--app-muted);
}

.text-muted {
  color: var(--app-muted) !important;
}

.bg-light { background: rgba(15, 23, 42, 0.03) !important; }
html[data-theme="dark"] .bg-light { background: rgba(234, 240, 255, 0.04) !important; }

.badge.text-bg-dark {
  background: rgba(15, 23, 42, 0.08) !important;
  color: var(--app-text) !important;
}
html[data-theme="dark"] .badge.text-bg-dark { background: rgba(234, 240, 255, 0.10) !important; }

.badge.text-bg-secondary {
  background: rgba(100, 116, 139, 0.14) !important;
  color: var(--app-text) !important;
}
html[data-theme="dark"] .badge.text-bg-secondary { background: rgba(169, 180, 204, 0.16) !important; }

.app-btn-primary.btn,
.app-btn-primary {
  background: linear-gradient(135deg, #ff6a00, #ff8a3d);
  border: 0;
  color: #0b1220;
  font-weight: 800;
  border-radius: 14px;
  padding: 12px 14px;
}

.app-btn-secondary.btn,
.app-btn-secondary {
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid var(--app-border);
  color: var(--app-text);
  font-weight: 700;
  border-radius: 14px;
  padding: 12px 14px;
}
html[data-theme="dark"] .app-btn-secondary.btn,
html[data-theme="dark"] .app-btn-secondary { background: rgba(234, 240, 255, 0.06); }

.app-input {
  background: rgba(15, 23, 42, 0.04) !important;
  border: 1px solid var(--app-border) !important;
  color: var(--app-text) !important;
  border-radius: 14px !important;
  padding: 12px 14px !important;
}
html[data-theme="dark"] .app-input { background: rgba(234, 240, 255, 0.06) !important; }

.app-input::placeholder {
  color: rgba(169, 180, 204, 0.75);
}

.app-topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.app-brand {
  font-weight: 900;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.app-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(255, 106, 0, 0.14);
  border: 1px solid rgba(255, 106, 0, 0.22);
}

.app-search {
  flex: 1;
}

.app-search input {
  width: 100%;
}

.app-bottomnav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3000;
  background: rgba(255, 255, 255, 0.82);
  border-top: 1px solid var(--app-border);
  backdrop-filter: blur(18px);
}
html[data-theme="dark"] .app-bottomnav { background: rgba(11, 18, 32, 0.82); }

.app-bottomnav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.app-navitem {
  text-decoration: none;
  color: rgba(15, 23, 42, 0.70);
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 8px 8px;
  border-radius: 14px;
}
html[data-theme="dark"] .app-navitem { color: rgba(234, 240, 255, 0.82); }

.app-navitem.is-active {
  background: rgba(15, 23, 42, 0.05);
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
  color: var(--app-text);
}
html[data-theme="dark"] .app-navitem.is-active {
  background: rgba(234, 240, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(234, 240, 255, 0.10);
}

.app-navitem .label {
  font-size: 11px;
  font-weight: 700;
}

@media (min-width: 992px) {
  .app-bottomnav {
    display: none;
  }
  .app-main {
    padding-bottom: 24px;
  }
}