/*
 * Headway Quiet Meridian — foundations and shared components
 *
 * This is the single authoritative source for design tokens, theme values,
 * typography, accessibility, Tailwind compatibility, shared fields/buttons,
 * overlays, navigation, loading states, and motion policy.
 *
 * Page ownership:
 *   index.css     Sign-in composition
 *   dashboard.css Explorer shell and features
 *   admin.css     Guide shell and features
 */

/* Foundations: tokens and themes */
:root {
  --bg-page: #f3f0e8;
  --bg-card: #fbfaf6;
  --bg-elevated: #f7f4ec;
  --bg-hover: #ece7dc;
  --bg-sidebar: #152629;
  --bg-muted: #efebe1;
  --bg-muted-strong: #e5dfd2;
  --bg-page-overlay: rgba(243, 240, 232, 0.94);
  --bg-card-overlay: rgba(251, 250, 246, 0.96);
  --bg-card-soft: rgba(251, 250, 246, 0.8);
  --text-primary: #17272a;
  --text-secondary: #405357;
  --text-tertiary: #667578;
  --accent: #a5682c;
  --accent-hover: #87511f;
  --accent-light: #f4e7d2;
  --accent-border: #d6ae75;
  --on-accent: #fffaf0;
  --border: #d8d3c8;
  --border-light: #e6e1d6;
  --shadow-card: 0 1px 2px rgba(23, 39, 42, 0.04), 0 14px 38px rgba(23, 39, 42, 0.055);
  --shadow-elevated: 0 24px 70px rgba(23, 39, 42, 0.13);
  --radius-card: 10px;
  --radius-button: 7px;
  --radius-input: 7px;
  --font-body: "Manrope", system-ui, sans-serif;
  --font-display: "Newsreader", Georgia, serif;
  --route: #2e5f63;
  --route-soft: rgba(46, 95, 99, 0.12);
  --success: #2e7452;
  --success-bg: #e3efe7;
  --success-border: #a9cdb6;
  --warning: #9b642c;
  --warning-bg: #f4e7d2;
  --warning-border: #d6ae75;
  --error: #a44e46;
  --error-bg: #f6e7e3;
  --error-border: #dfb6af;
  --info: #386d75;
  --info-bg: #e0ecec;
  --info-border: #a9c8ca;
}

[data-theme="dark"] {
  --bg-page: #071316;
  --bg-card: #0d1c1f;
  --bg-elevated: #122428;
  --bg-hover: #183034;
  --bg-sidebar: #0a181b;
  --bg-muted: #112326;
  --bg-muted-strong: #1a3034;
  --bg-page-overlay: rgba(7, 19, 22, 0.94);
  --bg-card-overlay: rgba(13, 28, 31, 0.96);
  --bg-card-soft: rgba(13, 28, 31, 0.82);
  --text-primary: #f0ece2;
  --text-secondary: #c1c9c3;
  --text-tertiary: #899894;
  --accent: #d29a55;
  --accent-hover: #e5ae68;
  --accent-light: rgba(210, 154, 85, 0.14);
  --accent-border: rgba(210, 154, 85, 0.38);
  --on-accent: #102023;
  --border: #294044;
  --border-light: #1d3236;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.16), 0 18px 46px rgba(0, 0, 0, 0.18);
  --shadow-elevated: 0 28px 80px rgba(0, 0, 0, 0.4);
  --route: #70a4a5;
  --route-soft: rgba(112, 164, 165, 0.12);
  --success: #71bd8e;
  --success-bg: rgba(113, 189, 142, 0.12);
  --success-border: rgba(113, 189, 142, 0.34);
  --warning: #dca866;
  --warning-bg: rgba(210, 154, 85, 0.13);
  --warning-border: rgba(210, 154, 85, 0.34);
  --error: #e59088;
  --error-bg: rgba(229, 144, 136, 0.11);
  --error-border: rgba(229, 144, 136, 0.32);
  --info: #7fb3b8;
  --info-bg: rgba(127, 179, 184, 0.12);
  --info-border: rgba(127, 179, 184, 0.32);
}

/* Reset, typography, and accessibility */
html {
  background: var(--bg-page);
  color-scheme: light;
  scroll-behavior: smooth;
}

html[data-theme="dark"] { color-scheme: dark; }

body {
  min-width: 320px;
  background: var(--bg-page) !important;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: -0.008em;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600 !important;
  letter-spacing: -0.026em;
  line-height: 1.08;
}

h4,
h5,
h6 { letter-spacing: -0.012em; }

button,
input,
select,
textarea { font: inherit; }

button {
  border-radius: var(--radius-button) !important;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, opacity 160ms ease, transform 160ms ease !important;
}

button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.48; cursor: not-allowed; }

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent) !important;
  outline-offset: 3px;
}

.text-xs.uppercase,
[class*="uppercase"][class*="text-xs"],
[class*="uppercase"][class*="text-[11px]"] {
  letter-spacing: 0.105em !important;
}

.text-\[10px\],
.text-\[11px\] { line-height: 1.45; }

/* Tailwind compatibility bridge: semantic Quiet Meridian values */
.bg-\[\#020617\] { background-color: var(--bg-page) !important; }
.bg-\[\#020617\]\/90 { background-color: var(--bg-page-overlay) !important; }
.bg-\[\#0f172a\] { background-color: var(--bg-card) !important; }
.bg-\[\#0f172a\]\/95 { background-color: var(--bg-card-overlay) !important; }
.bg-\[\#0f172a\]\/70 { background-color: var(--bg-card-soft) !important; }

.text-white,
.text-slate-200 { color: var(--text-primary) !important; }
.text-slate-300,
.text-slate-400 { color: var(--text-secondary) !important; }
.text-slate-500,
.text-slate-600,
.text-slate-700 { color: var(--text-tertiary) !important; }

.hover\:text-white:hover { color: var(--text-primary) !important; }
.hover\:text-amber-400:hover { color: var(--accent) !important; }
.hover\:text-rose-400:hover { color: var(--error) !important; }

.border-slate-800,
.border-slate-700,
.border-slate-700\/50,
.border-slate-700\/40,
.border-slate-700\/30,
.border-slate-600,
.border-slate-500 { border-color: var(--border) !important; }

.border-slate-800\/50 { border-color: var(--border-light) !important; }

.hover\:bg-\[\#0f172a\]:hover,
.hover\:bg-slate-800\/50:hover,
.hover\:bg-slate-800:hover,
.hover\:bg-slate-700:hover { background-color: var(--bg-hover) !important; }

.bg-slate-700 { background-color: var(--bg-muted-strong) !important; }
.bg-slate-800\/30,
.bg-slate-800\/35,
.bg-slate-800\/40,
.bg-slate-800\/50,
.bg-slate-800,
.bg-slate-900\/35,
.bg-slate-900\/40,
.bg-slate-900\/50,
.bg-slate-900\/60 { background-color: var(--bg-muted) !important; }

.bg-slate-800\/60 { background-color: var(--bg-muted-strong) !important; }
.bg-slate-800\/80 { background-color: var(--bg-elevated) !important; }

.placeholder-slate-600::placeholder,
.placeholder-slate-500::placeholder { color: var(--text-tertiary) !important; }

.ring-slate-700,
.focus\:ring-slate-700:focus { --tw-ring-color: var(--border) !important; }
.focus\:ring-amber-500\/40:focus { --tw-ring-color: var(--accent-border) !important; }
.focus\:border-amber-500\/50:focus { border-color: var(--accent) !important; }

.bg-amber-500 { background-color: var(--accent) !important; }
.hover\:bg-amber-400:hover,
.active\:bg-amber-600:active { background-color: var(--accent-hover) !important; }
.text-amber-300,
.text-amber-400,
.text-amber-500 { color: var(--accent) !important; }
.border-amber-500\/10,
.border-amber-500\/20,
.border-amber-500\/40,
.border-amber-500\/50 { border-color: var(--accent-border) !important; }
.bg-amber-500\/5,
.bg-amber-500\/10,
.bg-amber-500\/20 { background-color: var(--warning-bg) !important; }
.bg-amber-500\/60 { background-color: var(--accent) !important; }

.text-emerald-400,
.text-emerald-500 { color: var(--success) !important; }
.bg-emerald-500 { background-color: var(--success) !important; }
.bg-emerald-500\/10,
.bg-emerald-500\/20 { background-color: var(--success-bg) !important; }
.bg-emerald-500\/60,
.bg-emerald-500\/90 { background-color: var(--success) !important; }
.border-emerald-500,
.border-emerald-500\/20,
.border-emerald-500\/30 { border-color: var(--success-border) !important; }

.text-blue-400,
.text-blue-500,
.text-blue-600 { color: var(--info) !important; }
.bg-blue-500\/10,
.bg-blue-500\/20 { background-color: var(--info-bg) !important; }
.bg-blue-500\/60 { background-color: var(--info) !important; }
.border-blue-500\/20,
.border-blue-500\/30 { border-color: var(--info-border) !important; }

.text-rose-400,
.text-rose-500 { color: var(--error) !important; }
.bg-rose-500\/10,
.bg-rose-500\/20,
.hover\:bg-rose-500\/10:hover,
.hover\:bg-rose-500\/20:hover { background-color: var(--error-bg) !important; }
.bg-rose-500,
.bg-rose-500\/90,
.hover\:bg-rose-400:hover { background-color: var(--error) !important; }
.border-rose-500,
.border-rose-500\/20,
.border-rose-500\/30,
.hover\:border-rose-500\/30:hover { border-color: var(--error-border) !important; }

.bg-emerald-500\/90.text-white,
.bg-rose-500.text-white,
.bg-rose-500\/90.text-white { color: #fff !important; }

/* Shared fields, surfaces, overlays, and navigation */
textarea,
input[type="text"],
input[type="email"],
input[type="password"],
select {
  border-color: var(--border) !important;
  border-radius: var(--radius-input) !important;
  background: var(--bg-muted) !important;
  color: var(--text-primary) !important;
}

textarea:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
select:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(255,123,84,0.15) !important;
  --tw-ring-color: rgba(255,123,84,0.3) !important;
}

.premium-card,
.premium-card:hover {
  background: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}

.bg-\[\#0f172a\].rounded-xl { box-shadow: var(--shadow-card) !important; }

#settingsModal > div,
#modalContent,
#bulkOverlay > div,
#confirmOverlay > div {
  border-color: var(--border) !important;
  border-radius: 12px !important;
  background: var(--bg-card) !important;
  box-shadow: var(--shadow-elevated) !important;
}

#settingsModal .rounded-xl,
#modalContent .rounded-xl { border-radius: 7px !important; }

.scrollbar-thin::-webkit-scrollbar { width: 4px; }
.scrollbar-thin::-webkit-scrollbar-track { background: transparent; }
.scrollbar-thin::-webkit-scrollbar-thumb { border-radius: 8px; background: var(--border); }

.line-clamp-2 {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.border-t.border-slate-800 { border-top-color: var(--border-light) !important; }
hr { border-color: var(--border-light) !important; }

#bottomNav {
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--bg-card-overlay) !important;
  box-shadow: 0 -12px 30px rgba(23, 39, 42, 0.07);
}

#bottomNav .tab-btn,
#bottomNav .mobile-nav-btn {
  min-height: 58px !important;
  color: var(--text-tertiary) !important;
}

#bottomNav .text-amber-400 { color: var(--accent) !important; }

[data-theme="dark"] .theme-sun { display: none; }
[data-theme="dark"] .theme-moon { display: inline; }
[data-theme="light"] .theme-moon { display: none; }
[data-theme="light"] .theme-sun { display: inline; }

/* Loading and motion */
.spinner { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.fade-in { animation: headway-enter 300ms cubic-bezier(.2,.75,.25,1) both; }
.slide-up { animation: headway-sheet 260ms cubic-bezier(.2,.75,.25,1) both; }

@keyframes headway-enter {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes headway-sheet {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

#clientsLoading,
#programLoading,
#templatesLoading,
#audioLoading {
  position: relative;
  min-height: 150px;
}

#clientsLoading::after,
#programLoading::after,
#templatesLoading::after,
#audioLoading::after {
  width: min(420px, 75%);
  height: 42px;
  content: "";
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  opacity: 0.65;
  animation: skeleton-breathe 1.4s ease-in-out infinite;
}

#clientsLoading .spinner,
#programLoading .spinner,
#templatesLoading .spinner,
#audioLoading .spinner { position: absolute; }

@keyframes skeleton-breathe {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.75; }
}

@media (max-width: 767px) {
  body { font-size: 14px; }

  #modalOverlay > #modalContent,
  #bulkOverlay > div,
  #confirmOverlay > div,
  #settingsModal > div {
    padding-bottom: calc(24px + env(safe-area-inset-bottom)) !important;
    border-radius: 16px 16px 0 0 !important;
  }
}

@media (hover: hover) {
  button:not(:disabled):hover { transform: translateY(-1px); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}