/*
 * Base design tokens, global reset, and utility classes.
 * Feature-specific styles live in layout.css, chat.css, check_ins.css, shared.css
 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:ital,wght@0,400;0,700;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

html {
  overflow-y: scroll;
  color-scheme: light;
}

:root {
  /* Color Palette: Intimacy & Trust */
  --primary: #003633;
  --on-primary: #ffffff;
  --primary-container: #134e4a;
  --on-primary-container: #87beb8;
  
  /* Secondary: Material Design 3 uses dark secondary for text/interactive,
     container for backgrounds. Design spec's "Blush" refers to secondary-container. */
  --secondary: #695b5f;
  --on-secondary: #ffffff;
  --secondary-container: #f2dde2;
  --on-secondary-container: #706065;

  --tertiary: #18342f;
  --on-tertiary: #ffffff;
  --tertiary-container: #2f4b45;
  --on-tertiary-container: #9cbab2;
  
  --bg: #fdf9f0;
  --surface: #fdf9f0;
  --surface-dim: #dddad1;
  --surface-bright: #fdf9f0;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f7f3ea;
  --surface-container: #f1eee5;
  --surface-container-high: #ece8df;
  --surface-container-highest: #e6e2d9;
  --surface-variant: var(--surface-container-high);

  --text: #1c1c17;
  --on-surface: #1c1c17;
  --on-surface-variant: #404847;
  --text-muted: #404847;
  --text-soft: var(--text-muted);
  
  --outline: #707977;
  --outline-variant: #bfc8c6;
  
  /* Spacing & Radii */
  --radius-sm: 0.25rem;
  --radius-default: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows: Ambient & Soft */
  --shadow-sm: 0 4px 12px rgba(0, 54, 51, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 54, 51, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 54, 51, 0.12);
  --shadow-glass: 0 8px 32px rgba(0, 54, 51, 0.05);
  --shadow-color: rgba(0, 54, 51, 0.45);

  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  --headline-font: 'Noto Serif', serif;
  --headline-color: var(--primary);

  --border: var(--outline-variant);
  --danger: #ba1a1a;
  --danger-container: #fce4ec;
  --on-danger-container: #c2185b;
  --danger-outline: #f8bbd0;
  --error: #e53e3e;
  --success-container: #e8f5e9;
  --on-success-container: #1b5e20;
  --warning-container: #fff3cd;
  --on-warning-container: #856404;
  --info-container: #e3f2fd;
  --on-info-container: #1565c0;

  /* RGB variants for transparency */
  --primary-rgb: 0, 54, 51;
  --secondary-rgb: 105, 91, 95;
  --primary-light: rgba(var(--primary-rgb), 0.16);
  --primary-wash: rgba(var(--primary-rgb), 0.06);
  --primary-hairline: rgba(var(--primary-rgb), 0.08);
  --primary-glass-border: rgba(var(--primary-rgb), 0.05);
  --cream-glass: rgba(253, 249, 240, 0.7);
  --cream-glass-strong: rgba(253, 249, 240, 0.9);
  --white-glass-soft: rgba(255, 255, 255, 0.5);
  --white-glass: rgba(255, 255, 255, 0.9);
  --auth-gradient: linear-gradient(160deg, #fae8ec 0%, #f2dde2 45%, #e8bfc8 100%);
  --auth-hero-ink: #003633;
  --auth-hero-muted: #5f6d6a;
  --auth-mark-fg: #ffffff;
  --auth-orbit-fill: rgba(232, 185, 200, 0.4);
  --auth-orbit-border: rgba(105, 91, 95, 0.12);
  --profile-cover-gradient: linear-gradient(135deg, var(--primary) 0%, var(--tertiary-container) 100%);
  --profile-cover-scrim: linear-gradient(to top, rgba(0, 0, 0, 0.92) 0%, rgba(0, 0, 0, 0.58) 48%, transparent 100%);
  --profile-cover-text: var(--on-primary);
  --profile-cover-text-shadow: 0 2px 8px var(--shadow-color);
  --chart-primary: #87beb8;
  --chart-secondary: #e8bfc8;
  --chart-tertiary: #9cbab2;
  --chart-accent: #d9bc75;
  --theme-preview-night-bg: #0c1815;
  --theme-preview-night-accent: #87beb8;
  --theme-preview-night-surface: #132521;
  --theme-preview-midnight-bg: #000000;
  --theme-preview-midnight-accent: #e8bfc8;
  --theme-preview-midnight-surface: #1a1718;
  --theme-preview-day-bg: #fdf9f0;
  --theme-preview-day-accent: #003633;
  --theme-preview-day-surface: #f2dde2;
  --presence-glow-core: rgba(232, 191, 200, 0.62);
  --presence-glow-mid: rgba(135, 190, 184, 0.24);
  --presence-glow-edge: rgba(232, 191, 200, 0);
  --presence-glow-opacity: 0.42;
  --presence-partner-core: rgba(232, 191, 200, 0.85);
  --presence-partner-mid: rgba(232, 191, 200, 0.35);
  --presence-partner-edge: rgba(232, 191, 200, 0);
  --partner-surface-bg: var(--surface-container-lowest);
  --partner-surface-text: var(--text);
  --partner-surface-muted: var(--text-muted);
  --partner-surface-border: var(--outline-variant);
  --partner-surface-accent: var(--primary);

  /* Note label colors */
  --color-rose:    #e8bfc8;
  --color-amber:   #f5d89a;
  --color-emerald: #9cbab2;
  --color-sky:     #a8d4e6;
  --color-violet:  #c5b9e0;

  /* System feed card accent colours */
  --system-milestone-accent:    #a78bfa;
  --system-dream-accent:        #f59e0b;
  --system-conversation-accent: #3b82f6;
  --system-ping-accent:         #ec4899;

  /* Mood Palette (Partner Moods in Chat) */
  --mood-sad-bg: #e3f2fd;
  --mood-sad-focus: #1976d2;
  --mood-meh-bg: #f5f5f5;
  --mood-meh-focus: #757575;
  --mood-happy-bg: #fff5f8;

  /* Playful Games accent (Truth or Dare / How Well / Dream-Date) */
  --playful: var(--tertiary);
  --playful-container: var(--primary-wash);
}

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

.relationship-support-boundary {
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  padding: 1rem;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  background: var(--surface-container-low);
  color: var(--on-surface);
}

.relationship-support-boundary--compact {
  font-size: 0.875rem;
}

.relationship-support-boundary--full {
  padding: 1.25rem;
}

.relationship-support-boundary__icon {
  color: var(--primary);
  line-height: 1;
  flex: 0 0 auto;
}

.relationship-support-boundary__copy {
  display: grid;
  gap: 0.35rem;
}

.relationship-support-boundary__title {
  margin: 0;
  font-weight: 700;
}

.relationship-support-boundary__copy p {
  margin: 0;
}

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

  --primary: #87beb8;
  --on-primary: #0c1815;
  --primary-container: #14342f;
  --on-primary-container: #c5ece7;

  --secondary: #d8aeb9;
  --on-secondary: #0c1815;
  --secondary-container: #1e302c;
  --on-secondary-container: #9fd2cc;

  --tertiary: #e8bfc8;
  --on-tertiary: #0c1815;
  --tertiary-container: #2a3d38;
  --on-tertiary-container: #d9f3ef;

  --bg: #0c1815;
  --surface: #0c1815;
  --surface-dim: #07110f;
  --surface-bright: #1e302c;
  --surface-container-lowest: #10201d;
  --surface-container-low: #132521;
  --surface-container: #182b27;
  --surface-container-high: #203833;
  --surface-container-highest: #2a423d;
  --surface-variant: var(--surface-container-high);

  --text: #f0ece3;
  --on-surface: #f0ece3;
  --on-surface-variant: #9bbab5;
  --text-muted: #9bbab5;
  --text-soft: var(--text-muted);
  --headline-color: #e7f2ee;

  --outline: #6d928c;
  --outline-variant: #2d4742;

  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.36);
  --shadow-glass: 0 16px 44px rgba(0, 0, 0, 0.24);
  --shadow-color: rgba(0, 0, 0, 0.48);

  --danger: #ffb4ab;
  --danger-container: #3d1115;
  --on-danger-container: #ffd8d3;
  --danger-outline: #743238;
  --error: #e53e3e;
  --success-container: #14351e;
  --on-success-container: #bdebc5;
  --warning-container: #352b12;
  --on-warning-container: #f1d78a;
  --info-container: #102f3a;
  --on-info-container: #b9e6f7;

  --primary-rgb: 135, 190, 184;
  --secondary-rgb: 216, 174, 185;
  --primary-light: rgba(var(--primary-rgb), 0.18);
  --primary-wash: rgba(var(--primary-rgb), 0.08);
  --primary-hairline: rgba(var(--primary-rgb), 0.14);
  --primary-glass-border: rgba(var(--primary-rgb), 0.16);
  --cream-glass: rgba(12, 24, 21, 0.74);
  --cream-glass-strong: rgba(12, 24, 21, 0.92);
  --white-glass-soft: rgba(16, 32, 29, 0.62);
  --white-glass: rgba(16, 32, 29, 0.9);
  --profile-cover-gradient: linear-gradient(135deg, #0c1815 0%, #193b35 100%);
  --profile-cover-scrim: linear-gradient(to top, rgba(0, 0, 0, 0.92) 0%, rgba(0, 0, 0, 0.58) 48%, transparent 100%);
  --profile-cover-text: #ffffff;
  --profile-cover-text-shadow: 0 2px 10px var(--shadow-color);
  --chart-primary: #87beb8;
  --chart-secondary: #e8bfc8;
  --chart-tertiary: #9cbab2;
  --chart-accent: #d9bc75;
  --presence-glow-core: rgba(197, 236, 231, 0.72);
  --presence-glow-mid: rgba(135, 190, 184, 0.38);
  --presence-glow-edge: rgba(135, 190, 184, 0);
  --presence-glow-opacity: 0.5;
  --presence-partner-core: rgba(248, 221, 228, 0.88);
  --presence-partner-mid: rgba(232, 191, 200, 0.4);
  --presence-partner-edge: rgba(232, 191, 200, 0);
  --partner-surface-bg: #1a1718;
  --partner-surface-text: #ffffff;
  --partner-surface-muted: #b7aeb1;
  --partner-surface-border: #342d30;
  --partner-surface-accent: #e8bfc8;

  --color-rose: #e8bfc8;
  --color-amber: #d9bc75;
  --color-emerald: #87beb8;
  --color-sky: #8bc9dc;
  --color-violet: #b7a6dc;

  /* System feed card accent colours */
  --system-milestone-accent:    #b9a0e8;
  --system-dream-accent:        #e5a63b;
  --system-conversation-accent: #5b9cf6;
  --system-ping-accent:         #f06ea8;
}

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

  --primary: #e8bfc8;
  --on-primary: #050505;
  --primary-container: #2c2024;
  --on-primary-container: #f8dde4;

  --secondary: #87beb8;
  --on-secondary: #050505;
  --secondary-container: #1c1618;
  --on-secondary-container: #e8bfc8;

  --tertiary: #87beb8;
  --on-tertiary: #050505;
  --tertiary-container: #172421;
  --on-tertiary-container: #c5ece7;

  --bg: #000000;
  --surface: #050505;
  --surface-dim: #000000;
  --surface-bright: #181617;
  --surface-container-lowest: #0f0f0f;
  --surface-container-low: #141313;
  --surface-container: #1a1718;
  --surface-container-high: #221e20;
  --surface-container-highest: #2b2528;
  --surface-variant: var(--surface-container-high);

  --text: #ffffff;
  --on-surface: #ffffff;
  --on-surface-variant: #b7aeb1;
  --text-muted: #b7aeb1;
  --text-soft: var(--text-muted);
  --headline-color: #fff4f7;

  --outline: #6d6266;
  --outline-variant: #342d30;

  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.34);
  --shadow-md: 0 12px 34px rgba(0, 0, 0, 0.44);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.52);
  --shadow-glass: 0 16px 48px rgba(0, 0, 0, 0.44);
  --shadow-color: rgba(0, 0, 0, 0.45);

  --danger: #ffb4ab;
  --danger-container: #3d1115;
  --on-danger-container: #ffd8d3;
  --danger-outline: #743238;
  --error: #e53e3e;
  --success-container: #112e1a;
  --on-success-container: #bdebc5;
  --warning-container: #31260f;
  --on-warning-container: #f1d78a;
  --info-container: #0f2a34;
  --on-info-container: #b9e6f7;

  --primary-rgb: 232, 191, 200;
  --secondary-rgb: 135, 190, 184;
  --primary-light: rgba(var(--primary-rgb), 0.18);
  --primary-wash: rgba(var(--primary-rgb), 0.08);
  --primary-hairline: rgba(var(--primary-rgb), 0.14);
  --primary-glass-border: rgba(var(--primary-rgb), 0.15);
  --cream-glass: rgba(5, 5, 5, 0.78);
  --cream-glass-strong: rgba(5, 5, 5, 0.94);
  --white-glass-soft: rgba(20, 19, 19, 0.66);
  --white-glass: rgba(20, 19, 19, 0.92);
  --profile-cover-gradient: linear-gradient(135deg, #000000 0%, #2c2024 100%);
  --profile-cover-scrim: linear-gradient(to top, rgba(0, 0, 0, 0.92) 0%, rgba(0, 0, 0, 0.58) 48%, transparent 100%);
  --profile-cover-text: #ffffff;
  --profile-cover-text-shadow: 0 2px 10px var(--shadow-color);
  --chart-primary: #e8bfc8;
  --chart-secondary: #87beb8;
  --chart-tertiary: #c5ece7;
  --chart-accent: #d9bc75;
  --presence-glow-core: rgba(248, 221, 228, 0.72);
  --presence-glow-mid: rgba(232, 191, 200, 0.36);
  --presence-glow-edge: rgba(232, 191, 200, 0);
  --presence-glow-opacity: 0.46;
  --presence-partner-core: rgba(197, 236, 231, 0.88);
  --presence-partner-mid: rgba(135, 190, 184, 0.4);
  --presence-partner-edge: rgba(135, 190, 184, 0);
  --partner-surface-bg: #182b27;
  --partner-surface-text: #f0ece3;
  --partner-surface-muted: #9bbab5;
  --partner-surface-border: #2d4742;
  --partner-surface-accent: #87beb8;

  --color-rose: #e8bfc8;
  --color-amber: #d7b96f;
  --color-emerald: #87beb8;
  --color-sky: #90cee0;
  --color-violet: #bfaee5;

  /* System feed card accent colours */
  --system-milestone-accent:    #c9b4f0;
  --system-dream-accent:        #ecb84e;
  --system-conversation-accent: #6ba8f8;
  --system-ping-accent:         #f27eb4;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-family);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

body,
input,
textarea,
select,
button {
  text-rendering: optimizeLegibility;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

::selection {
  background: var(--primary);
  color: var(--on-primary);
}

h1, h2, h3, h4, .headline {
  font-family: var(--headline-font);
  color: var(--headline-color);
  font-weight: 700;
  line-height: 1.2;
}

/* Glassmorphism utility */
.glass {
  background: var(--cream-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--primary-glass-border);
  box-shadow: var(--shadow-glass);
}

.partner-authored-surface {
  background: var(--partner-surface-bg);
  color: var(--partner-surface-text);
  border-color: var(--partner-surface-border);
}

.partner-authored-surface .text-muted,
.partner-authored-surface .timestamp,
.partner-authored-surface .caption {
  color: var(--partner-surface-muted);
}

.partner-authored-surface a {
  color: var(--partner-surface-accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-family);
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  min-height: 44px;
}
.btn:hover  { transform: translateY(-1px); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--secondary-container);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1.5px solid var(--danger);
  box-shadow: none;
}
.btn-danger:hover {
  background: var(--danger-container);
  filter: none;
}

.btn-full { width: 100%; }
.btn-sm   { padding: 0.5rem 1.25rem; font-size: 0.85rem; height: 44px; }
.btn-icon { border-radius: 50%; width: 44px; height: 44px; padding: 0; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

/* Accessibility */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@keyframes fadeIn  { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bounce  { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ── Typography Utilities ──────────────────────────────── */
.eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--on-surface-variant);
}

.caption { font-size: 0.8rem; color: var(--text-muted); }
.timestamp { font-size: 0.75rem; color: var(--text-muted); opacity: 0.85; }

.mono {
  font-family: var(--font-family); /* Or a monospace font if available */
  font-weight: 700;
  letter-spacing: 0.05em;
}

.text-muted { color: var(--text-muted); }
.subtle { color: var(--text-muted); }

/* ─── Auth split layout ─────────────────────────────────────────────────── */
.auth-split-layout {
  display: flex;
  flex: 1;
  min-height: 100dvh;
}

.auth-panel-left {
  flex: 0 0 44%;
  background: var(--auth-gradient);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.auth-panel-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--headline-font);
  font-size: 1rem;
  font-weight: 700;
  color: var(--auth-hero-ink);
  position: relative;
  z-index: 1;
}

.auth-logo-mark {
  width: 30px;
  height: 30px;
  background: var(--auth-hero-ink);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--auth-mark-fg);
  flex-shrink: 0;
}

.auth-panel-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.auth-circle {
  position: absolute;
  border-radius: 50%;
  background: var(--auth-orbit-fill);
  border: 1.5px solid var(--auth-orbit-border);
}
.auth-circle-a { width: 120px; height: 120px; top: 30%;  left: 15%;  }
.auth-circle-b { width:  80px; height:  80px; top: 38%;  left: 48%;  }
.auth-circle-c { width:  60px; height:  60px; top: 52%;  left: 28%;  }
.auth-circle-d { width:  90px; height:  90px; top: 44%;  left: -10%; }

.auth-panel-tagline {
  position: relative;
  z-index: 1;
}

.auth-tagline-headline {
  font-family: var(--headline-font);
  font-size: clamp(2rem, 3vw, 2.75rem);
  font-weight: 700;
  color: var(--auth-hero-ink);
  line-height: 1.15;
  margin-bottom: 0.875rem;
}

.auth-tagline-body {
  font-size: 0.875rem;
  color: var(--auth-hero-muted);
  line-height: 1.65;
  max-width: 280px;
}

.auth-panel-right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 2.5rem 1.5rem;
  overflow-y: auto;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 2.5rem;
}

.auth-mobile-logo {
  display: none;
  text-align: center;
  font-family: var(--headline-font);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.auth-mobile-subtitle {
  display: none;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.auth-form-title {
  font-family: var(--headline-font);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1.25rem;
}

.btn-oauth {
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1.5px solid var(--outline-variant) !important;
  background-color: var(--bg) !important;
  color: var(--text) !important;
  width: 100%;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
}

.btn-oauth:hover {
  background-color: var(--surface-container-low) !important;
  transform: translateY(-1px);
}

.oauth-icon { width: 20px; height: 20px; flex-shrink: 0; }
.oauth-section { margin-bottom: 1.5rem; }

.auth-divider {
  text-align: center;
  color: var(--text-muted);
  margin: 1.5rem 0;
  font-size: 0.8125rem;
  position: relative;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 44%;
  height: 1px;
  background-color: var(--outline-variant);
}
.auth-divider::before { left: 0; }
.auth-divider::after  { right: 0; }

.form-checkbox {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
}
.form-checkbox label { margin: 0; cursor: pointer; }

.form-actions { margin-top: 1.5rem; }

.auth-footer {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.auth-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.auth-link:hover { text-decoration: underline; }

.auth-theme-switcher {
  margin: 1.25rem auto 0;
  width: min(100%, 340px);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.375rem;
  padding: 0.75rem;
}

.auth-theme-switcher span {
  grid-column: 1 / -1;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.auth-theme-switcher button {
  appearance: none;
  min-height: 38px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--surface-container);
  color: var(--text-muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  transition: var(--transition);
}

.auth-theme-switcher button:hover,
.auth-theme-switcher button.theme-choice--active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
}

.password-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--outline);
  margin-top: 0.375rem;
}

.error-banner {
  background: var(--danger-container);
  border: 1px solid var(--danger-outline);
  border-radius: var(--radius-default);
  padding: 0.875rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  color: var(--on-danger-container);
}
.error-banner strong { display: block; margin-bottom: 0.5rem; }
.error-banner ul { margin: 0; padding-left: 1.25rem; }
.error-banner li { margin-bottom: 0.25rem; }

@media (max-width: 768px) {
  .auth-split-layout {
    min-height: 100dvh;
    background: var(--bg);
    flex-direction: column;
    overflow: hidden;
  }

  .auth-panel-left {
    display: flex;
    flex: 0 0 52dvh;
    min-height: 380px;
    justify-content: flex-end;
    padding: 2.5rem 1.75rem 2.25rem;
  }

  .auth-panel-logo {
    margin-bottom: 1.5rem;
    font-size: 1.35rem;
  }

  .auth-logo-mark {
    width: 40px;
    height: 40px;
  }

  .auth-logo-mark svg {
    width: 20px;
    height: 20px;
  }

  .auth-tagline-headline {
    font-size: clamp(2.45rem, 11vw, 3.25rem);
    line-height: 1.03;
    letter-spacing: 0;
    max-width: 310px;
  }

  .auth-tagline-body {
    display: none;
  }

  .auth-circle {
    background: transparent;
    border-color: var(--auth-orbit-border);
  }

  .auth-panel-right {
    flex: 1;
    align-items: flex-start;
    background: var(--surface-container-lowest);
    border-radius: 28px 28px 0 0;
    box-shadow: 0 -16px 44px rgba(0, 0, 0, 0.22);
    margin-top: -1.25rem;
    overflow-y: auto;
    padding: 1.125rem 1.5rem calc(1.5rem + env(safe-area-inset-bottom));
    position: relative;
    z-index: 2;
  }

  .auth-panel-right::before {
    content: "";
    width: 36px;
    height: 4px;
    border-radius: 9999px;
    background: var(--outline-variant);
    opacity: 0.65;
    position: absolute;
    left: 50%;
    top: 0.75rem;
    transform: translateX(-50%);
  }

  .auth-card {
    max-width: none;
    padding: 1.5rem 0 0;
    box-shadow: none;
    background: transparent;
    border-radius: 0;
    display: flex;
    flex-direction: column;
  }

  .auth-mobile-logo    { display: none; }
  .auth-mobile-subtitle { display: block; order: 0; }

  .auth-form-title {
    font-size: 1.55rem;
    color: var(--primary);
    margin-bottom: 1rem;
    order: 1;
  }

  .auth-card > form { order: 2; }

  .auth-card .form-group {
    margin-bottom: 0.85rem;
  }

  .auth-card .form-group label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
  }

  .auth-card .form-input {
    min-height: 50px;
    padding: 0.8rem 1rem;
  }

  .auth-card .form-checkbox {
    display: none;
  }

  .auth-card > .auth-footer { order: 3; }

  .auth-theme-switcher { order: 4; }

  .oauth-section {
    order: 5;
    margin: 1rem 0 0;
  }

  .auth-divider {
    display: none;
  }

  .auth-footer {
    margin-top: 0.75rem;
  }

  .auth-theme-switcher {
    margin-top: 1rem;
  }
}

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.5rem; }
.form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container);
  color: var(--text);
  font-family: var(--font-family);
  font-size: 1rem;
  transition: var(--transition);
}
.form-input:focus {
  outline: none;
  background: var(--surface-container-lowest);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glass-border);
}

/* ─── Onboarding walkthrough (Premium) ─────────────────────────────────────── */
.onboarding-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 16px;
  background: var(--bg);
  position: relative;
  overflow-x: hidden;
  overflow-y: hidden;
}

/* Blush decoration circles */
.onboarding-blush {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.onboarding-circle {
  position: absolute;
  border-radius: 9999px;
  background: var(--secondary-container);
}

.onboarding-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 520px;
  background: var(--surface-container-lowest);
  border-radius: 28px;
  box-shadow: var(--shadow-lg), var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: calc(100dvh - 32px);
}

.onboarding-step-form {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
}

.onboarding-header {
  padding: 22px 28px 18px;
  border-bottom: 1px solid var(--primary-wash);
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex-shrink: 0;
}

.onboarding-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.onboarding-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}
.onboarding-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 9999px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-primary);
  flex-shrink: 0;
}
.onboarding-logo-text {
  font-family: var(--headline-font);
  font-weight: 700;
  font-size: 16px;
  color: var(--primary);
}

.onboarding-step-indicator {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.onboarding-progress {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.onboarding-p-dot {
  width: 8px;
  height: 8px;
  border-radius: 9999px;
  background: var(--outline-variant);
  transition: var(--transition);
  flex-shrink: 0;
}
.onboarding-p-dot.active {
  background: var(--primary);
  width: 22px;
}
.onboarding-p-dot.done {
  background: var(--primary);
  opacity: 0.45;
}
.onboarding-p-line {
  width: 28px;
  height: 1.5px;
  background: var(--outline-variant);
  transition: background 0.4s ease;
  flex-shrink: 0;
}
.onboarding-p-line.done {
  background: var(--primary);
  opacity: 0.45;
}

.onboarding-content-scroll {
  flex: 1;
  min-height: 0;
  min-width: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 30px 28px 24px;
}

.onboarding-footer {
  padding: 18px 28px;
  border-top: 1px solid var(--primary-wash);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  background: var(--cream-glass-strong);
  backdrop-filter: blur(8px);
}

/* Step content common */
.step-enter {
  animation: stepIn 0.45s cubic-bezier(0.19,1,0.22,1) both;
}

@keyframes stepIn {
  from { opacity: 0; transform: translateY(18px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.illo-ring {
  width: 96px;
  height: 96px;
  border-radius: 9999px;
  background: var(--secondary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
  animation: float 4s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.onboarding-title {
  font-family: var(--headline-font);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.15;
}

.onboarding-desc {
  color: var(--text-muted);
  text-align: center;
  font-size: 15px;
  line-height: 1.65;
  margin: 0 auto 32px;
  max-width: 380px;
}

/* Inputs */
.lt-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  display: block;
}

.lt-input {
  font-family: var(--font-family);
  font-size: 15px;
  color: var(--text);
  background: var(--surface-container-lowest);
  border: 1.5px solid var(--outline-variant);
  border-radius: 12px;
  padding: 13px 16px;
  width: 100%;
  outline: none;
  transition: all 0.25s cubic-bezier(0.25,0.8,0.25,1);
  line-height: 1.5;
}
.lt-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-hairline);
}
.lt-input::placeholder { color: var(--outline); }
.lt-textarea { resize: none; min-height: 110px; }

/* Tag chips */
.tag-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.tag-chip {
  appearance: none;
  font-family: var(--font-family);
  font-size: 13.5px;
  font-weight: 500;
  border: 1.5px solid var(--outline-variant);
  border-radius: 9999px;
  padding: 8px 16px;
  background: var(--surface-container-lowest);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.25,0.8,0.25,1);
  user-select: none;
}
.tag-chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-wash); }
.tag-chip.selected { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }

.char-count { font-size: 11.5px; color: var(--outline); text-align: right; margin-top: 5px; }

/* Error messages */
.error-messages {
  background: var(--surface-container-highest);
  border: 1px solid var(--danger);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
  color: var(--danger);
}
.error-messages-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.error-count {
  font-weight: 700;
}
.error-messages-list {
  margin: 0;
  padding-left: 1.25rem;
  list-style: disc outside;
}
.error-message {
  font-size: 0.875rem;
  color: var(--danger);
  margin-bottom: 0.25rem;
}

/* Modal inline errors */
.modal-errors {
  margin-bottom: 1rem;
}
.modal-errors:not(.hidden) {
  background: var(--surface-container-highest);
  border: 1px solid var(--danger);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
}
.modal-errors .error-message {
  font-size: 0.875rem;
  color: var(--danger);
  margin-bottom: 0.25rem;
}
.modal-errors .error-message:last-child {
  margin-bottom: 0;
}

/* Field-level errors */
.field-with-errors .form-input,
.field-with-errors .lt-input {
  border-color: var(--danger);
}
.field-with-errors .error-message {
  font-size: 0.75rem;
  color: var(--danger);
  margin-top: 0.25rem;
}

/* Empty states */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}
.empty-state-icon {
  color: var(--outline-variant);
  opacity: 0.5;
  margin-bottom: 1.5rem;
}
.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.empty-state-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}
.empty-state-action {
  display: inline-block;
}

/* Success messages */
.success-message {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--surface-container-highest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  color: var(--primary);
  font-size: 0.95rem;
  animation: fadeIn 0.2s ease-out;
}
.success-message-icon {
  color: var(--primary);
  flex-shrink: 0;
}
.success-message-text {
  flex: 1;
}
.success-message-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0 0 0 0.5rem;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.success-message-close:hover {
  opacity: 1;
}
.success-message-close:focus {
  outline: none;
  opacity: 1;
}
.success-message--exiting {
  animation: fadeOut 0.2s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; height: 0; padding: 0; margin: 0; }
}

.skip-link {
  font-size: 13px; color: var(--text-muted); cursor: pointer;
  background: none; border: none; font-family: var(--font-family);
  text-decoration: underline; text-underline-offset: 3px;
  transition: color 0.2s ease; padding: 0;
}
.skip-link:hover { color: var(--primary); }

/* Summary card */
.summary-card {
  background: var(--surface-container-lowest);
  border-radius: 20px;
  padding: 20px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 260px;
  overflow-y: auto;
}
.summary-item { display: flex; gap: 12px; align-items: flex-start; }
.summary-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-muted); margin-bottom: 2px; }
.summary-value { font-size: 14px; color: var(--primary); font-family: var(--headline-font); font-weight: 700; line-height: 1.4; word-break: break-word; }

.onboarding-join-form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.onboarding-join-row {
  display: flex;
  align-items: stretch;
  gap: 0.75rem;
}

.onboarding-join-row .join-code-input {
  flex: 1 1 auto;
  min-width: 0;
}

.onboarding-join-submit {
  flex: 0 0 auto;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .onboarding-container {
    align-items: stretch;
    padding: 12px;
  }

  .onboarding-card {
    border-radius: 24px;
    max-height: calc(100dvh - 24px);
  }

  .onboarding-header {
    gap: 10px;
    padding: 18px 22px 14px;
  }

  .onboarding-logo-text {
    font-size: 15px;
  }

  .onboarding-step-indicator {
    font-size: 11px;
  }

  .onboarding-p-line {
    width: clamp(18px, 6vw, 28px);
  }

  .onboarding-content-scroll {
    padding: 24px 22px 18px;
  }

  .onboarding-footer {
    padding: 14px 22px calc(14px + env(safe-area-inset-bottom));
  }

  .illo-ring {
    height: 82px;
    margin-bottom: 18px;
    width: 82px;
  }

  .onboarding-title {
    font-size: 25px;
    margin-bottom: 8px;
  }

  .onboarding-desc {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 22px;
  }

  .tag-chip {
    font-size: 13px;
    padding: 7px 13px;
  }

  .lt-textarea {
    min-height: 96px;
  }

  .summary-card {
    max-height: 210px;
    padding: 16px;
  }

  .onboarding-join-row {
    flex-direction: column;
  }

  .onboarding-join-submit {
    width: 100%;
  }
}

@keyframes heartPop {
  0%   { transform: scale(0.5); opacity: 0; }
  60%  { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Utility Classes (Phase D: Code Organization) ─────────────────────── */
.container-main {
  padding: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.container-narrow {
  padding: 2rem 1rem;
  max-width: 640px;
  margin: 0 auto;
}

.container-wide {
  padding: 1.5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }

.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.gap-lg { gap: 1.5rem; }

.mb-sm { margin-bottom: 0.5rem; }
.mb-md { margin-bottom: 1rem; }
.mb-lg { margin-bottom: 1.5rem; }
.mb-xl { margin-bottom: 2rem; }