/* ==========================================================================
   SMRITI 3D SANCTUARY STYLESHEET (DESIGN.md Aligned & Performance Optimized)
   Zero layout-thrashing, GPU-accelerated motion, clean Day/Twilight tokens
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS (Day Mode Default & Twilight Mode)
   -------------------------------------------------------------------------- */
:root {
  --bg-base: #FDFBF7;
  --bg-surface: #FAF7F2;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFDF9;
  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-accent: rgba(217, 119, 6, 0.30);
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #64748B;
  
  --accent-gold: #D97706;
  --accent-gold-light: #FEF3C7;
  --accent-gold-dark: #92400E;
  --accent-orange: #C2410C;
  --accent-orange-light: #FFEDD5;
  --accent-rose: #E11D48;
  --accent-rose-light: #FFE4E6;
  --accent-sage: #059669;
  --accent-sage-light: #D1FAE5;
  --accent-indigo: #4338CA;
  --accent-indigo-light: #EEF2FF;

  --dot-color: rgba(15, 23, 42, 0.06);
  --nav-bg: rgba(253, 251, 247, 0.90);
  --nav-border: rgba(15, 23, 42, 0.07);
  --shadow-soft: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 4px 6px -2px rgba(15, 23, 42, 0.03);
  --shadow-elevated: 0 20px 45px -10px rgba(15, 23, 42, 0.10), 0 0 25px rgba(245, 158, 11, 0.08);
  --shadow-glow: 0 20px 40px -10px rgba(217, 119, 6, 0.15);
}

/* Twilight Mode (Sundowning Anchor Theme) */
html.twilight-mode,
body.twilight-mode {
  --bg-base: #13161F;
  --bg-surface: #1A1D27;
  --bg-card: #222634;
  --bg-card-hover: #2A2F40;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(245, 158, 11, 0.40);
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-tertiary: #94A3B8;

  --accent-gold: #FBBF24;
  --accent-gold-light: rgba(245, 158, 11, 0.15);
  --accent-gold-dark: #FDE68A;
  --accent-orange: #FB923C;
  --accent-orange-light: rgba(251, 146, 60, 0.15);
  --accent-rose: #FDA4AF;
  --accent-rose-light: rgba(244, 63, 94, 0.15);
  --accent-sage: #6EE7B7;
  --accent-sage-light: rgba(16, 185, 129, 0.15);
  --accent-indigo: #A5B4FC;
  --accent-indigo-light: rgba(99, 102, 241, 0.15);

  --dot-color: rgba(251, 191, 36, 0.16);
  --nav-bg: rgba(19, 22, 31, 0.90);
  --nav-border: rgba(255, 255, 255, 0.08);
  --shadow-soft: 0 15px 35px -5px rgba(0, 0, 0, 0.45);
  --shadow-elevated: 0 25px 50px -10px rgba(0, 0, 0, 0.6), 0 0 30px rgba(245, 158, 11, 0.12);
  --shadow-glow: 0 20px 45px -10px rgba(245, 158, 11, 0.22);
}

/* --------------------------------------------------------------------------
   2. CORE BASE & CLEAN TRANSITIONS
   -------------------------------------------------------------------------- */
html {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  /* Disabled native scroll-smooth so Lenis is the single authoritative driver */
  scroll-behavior: auto !important;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Scope color crossfades strictly during theme toggle to prevent scroll thrashing */
html.theme-transitioning,
html.theme-transitioning body,
html.theme-transitioning header,
html.theme-transitioning section,
html.theme-transitioning footer,
html.theme-transitioning .depth-tilt-card,
html.theme-transitioning .personalization-chip,
html.theme-transitioning .senior-action-card,
html.theme-transitioning .quiz-btn,
html.theme-transitioning .role-select-btn {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease !important;
}

/* Constellation Starlight Dot Matrix */
.constellation-grid-bg {
  background-image: radial-gradient(var(--dot-color) 1.2px, transparent 1.2px);
  background-size: 28px 28px;
  background-position: 0 0;
}

/* --------------------------------------------------------------------------
   3. TOP PROGRESS BAR & SIDE RAIL SCROLL-PROGRESS NAV (GPU ACCELERATED)
   -------------------------------------------------------------------------- */
#scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #D97706, #F59E0B, #E11D48);
  z-index: 100;
  width: 100%;
  transform-origin: 0% 50%;
  transform: scaleX(0);
  will-change: transform;
}

.scroll-dot-nav {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 45;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 0.75rem 0.5rem;
  border-radius: 9999px;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--nav-border);
  box-shadow: var(--shadow-soft);
  contain: layout style;
}

.scroll-dot-item {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 9999px;
  background-color: var(--text-tertiary);
  opacity: 0.45;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.scroll-dot-item:hover {
  opacity: 0.85;
  transform: scale(1.3);
}

.scroll-dot-item.active {
  opacity: 1;
  background-color: var(--accent-gold);
  transform: scale(1.4);
  box-shadow: 0 0 10px var(--accent-gold);
}

.scroll-dot-tooltip {
  position: absolute;
  right: 1.75rem;
  top: 50%;
  transform: translateY(-50%) translateX(10px);
  background: var(--text-primary);
  color: var(--bg-base);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 0.5rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.scroll-dot-item:hover .scroll-dot-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* --------------------------------------------------------------------------
   4. DAY / TWILIGHT SUN-TO-MOON MORPHING TOGGLE
   -------------------------------------------------------------------------- */
.theme-morph-toggle {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 9999px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
  box-shadow: var(--shadow-soft);
}

.theme-morph-toggle:hover {
  border-color: var(--accent-gold);
  transform: scale(1.06);
}

.theme-icon-sun,
.theme-icon-moon {
  position: absolute;
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
}

.theme-icon-sun {
  color: #D97706;
  transform: rotate(0deg) scale(1);
  opacity: 1;
}

.theme-icon-moon {
  color: #FBBF24;
  transform: rotate(-90deg) scale(0.4);
  opacity: 0;
}

html.twilight-mode .theme-icon-sun {
  transform: rotate(90deg) scale(0.4);
  opacity: 0;
}

html.twilight-mode .theme-icon-moon {
  transform: rotate(0deg) scale(1);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   5. 3D HERO VIEWPORT & CONTEXTUAL INSPECTION HUD
   -------------------------------------------------------------------------- */
#three-hero-viewport {
  touch-action: none;
  background: transparent;
  contain: strict;
}

#memory-inspect-hud {
  box-shadow: var(--shadow-elevated);
  transform-origin: top right;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 2px solid var(--accent-gold);
}

/* --------------------------------------------------------------------------
   6. 3D FLOATING TABLET DEVICE SIMULATOR (HARDWARE ACCELERATED)
   -------------------------------------------------------------------------- */
.tablet-3d-wrapper {
  perspective: 1000px;
  transform-style: preserve-3d;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.tablet-3d-chassis {
  transform: rotateX(6deg) rotateY(-3deg) rotateZ(0.5deg);
  box-shadow: 
    0 30px 70px -15px rgba(15, 23, 42, 0.3),
    0 10px 25px -5px rgba(217, 119, 6, 0.15),
    0 0 0 1px rgba(255, 255, 255, 0.15);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}

.tablet-3d-wrapper:hover .tablet-3d-chassis {
  transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg) scale(1.01);
  box-shadow: 
    0 40px 90px -20px rgba(15, 23, 42, 0.35),
    0 15px 35px -5px rgba(217, 119, 6, 0.25);
}

/* Senior High Contrast Mode */
.high-contrast-mode {
  background-color: #000000 !important;
  color: #FFFFFF !important;
}

.high-contrast-mode .senior-action-card,
.high-contrast-mode .senior-preview-card {
  background-color: #121212 !important;
  border-color: #F59E0B !important;
  color: #FFFFFF !important;
}

.high-contrast-mode #senior-title,
.high-contrast-mode .senior-action-title,
.high-contrast-mode .senior-preview-title {
  color: #FCD34D !important;
}

.high-contrast-mode #senior-date,
.high-contrast-mode .senior-action-sub,
.high-contrast-mode .senior-preview-sub {
  color: #E2E8F0 !important;
}

/* Senior Large Font Mode */
.large-font-mode .senior-action-title {
  font-size: 1.45rem !important;
}

.large-font-mode .senior-action-sub {
  font-size: 0.95rem !important;
}

.large-font-mode #senior-title {
  font-size: 2.1rem !important;
}

.large-font-mode .senior-preview-text {
  font-size: 1.25rem !important;
}

/* --------------------------------------------------------------------------
   7. JOURNEY STAGE CARDS & DYNAMIC ACTIVE INDICATOR
   -------------------------------------------------------------------------- */
.perspective-container {
  perspective: 1000px;
}

.depth-tilt-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.depth-tilt-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.depth-tilt-card.active-stage {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 2px var(--accent-gold), var(--shadow-glow);
}

.stage-badge-indicator {
  transition: opacity 0.25s ease;
}

/* --------------------------------------------------------------------------
   8. PERSONALIZATION CHIPS & SHOWCASE PANELS
   -------------------------------------------------------------------------- */
.personalization-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.personalization-chip:hover {
  border-color: var(--accent-gold);
  transform: translateX(4px);
}

.personalization-chip.active {
  background-color: var(--accent-gold-light);
  border-color: var(--accent-gold);
  box-shadow: 0 4px 16px -2px rgba(217, 119, 6, 0.15);
}

/* --------------------------------------------------------------------------
   9. INTERACTIVE QUIZ BUTTONS
   -------------------------------------------------------------------------- */
.quiz-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.quiz-btn:hover {
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.quiz-btn.quiz-correct {
  background-color: var(--accent-sage-light) !important;
  border-color: var(--accent-sage) !important;
  color: var(--accent-sage) !important;
}

.quiz-btn.quiz-wrong {
  background-color: var(--accent-rose-light) !important;
  border-color: var(--accent-rose) !important;
  color: var(--accent-rose) !important;
}

/* --------------------------------------------------------------------------
   10. SCROLL REVEAL UTILITIES (ZERO-JANK)
   -------------------------------------------------------------------------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
  will-change: auto; /* Release GPU layer once revealed */
}

/* Micro-interaction hover lifts */
.hover-lift {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

/* --------------------------------------------------------------------------
   11. ACCESSIBILITY & REDUCED MOTION SUPPORT
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   12. SPECIALIST CLINICAL DASHBOARD RESPONSIVE SPLIT-PANEL (768px - 1024px)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .specialist-main-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: 1.25rem !important;
  }
  .specialist-roster-column {
    width: 100% !important;
    transition: max-height 0.35s ease, opacity 0.25s ease;
  }
  .specialist-roster-column.collapsed {
    display: none !important;
  }
  .specialist-detail-column {
    width: 100% !important;
  }
  #patient-roster-list {
    max-height: 380px !important;
  }
  .detail-tab-btn {
    padding: 0.5rem 0.75rem !important;
    font-size: 11px !important;
  }
}

@media (max-width: 640px) {
  .detail-tabs-bar {
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }
}


/* --------------------------------------------------------------------------
   12. OFFLINE-READY SENIOR SPACE & STATUS TOKENS
   -------------------------------------------------------------------------- */
.offline-status-online {
  background-color: #ECFDF5 !important;
  color: #065F46 !important;
  border-color: #A7F3D0 !important;
}

.offline-status-degraded {
  background-color: #FEF3C7 !important;
  color: #92400E !important;
  border-color: #FCD34D !important;
}

.offline-status-offline {
  background-color: #FEF2F2 !important;
  color: #991B1B !important;
  border-color: #FECACA !important;
}

.offline-status-syncing {
  background-color: #EFF6FF !important;
  color: #1E40AF !important;
  border-color: #BFDBFE !important;
}

/* Accessible offline prep modal */
.offline-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.offline-modal-card {
  background: #FFFFFF;
  border-radius: 1.5rem;
  max-width: 32rem;
  width: 100%;
  padding: 1.75rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 2px solid #F3F4F6;
}

/* Elderly-friendly touch target guarantees */
.touch-target-senior {
  min-height: 48px;
  min-width: 48px;
}