/**
 * BRIDGE AI OS — PHERE Living Design System
 * Post-Human Experiential Reality Engine
 * Cinematic · Adaptive · Physics-Driven · Human-Indistinguishable
 */

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 1 — PERCEPTUAL FOUNDATION: Variable tokens with entropy
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  /* Brand palette with multi-depth gradients */
  --phere-void:      #020408;
  --phere-deep:      #050a12;
  --phere-surface:   #080f1a;
  --phere-raised:    #0d1624;
  --phere-float:     #111e30;
  --phere-border:    rgba(99,255,218,0.08);
  --phere-border-hi: rgba(99,255,218,0.22);

  /* Cyan spectrum — alive, not flat */
  --phere-cyan-dim:   #1a6b5a;
  --phere-cyan:       #63ffda;
  --phere-cyan-hi:    #9fffec;
  --phere-cyan-glow:  rgba(99,255,218,0.15);

  /* Accent palette */
  --phere-emerald:    #00e57b;
  --phere-gold:       #f59e0b;
  --phere-crimson:    #ff3366;
  --phere-violet:     #a855f7;
  --phere-sapphire:   #3b82f6;

  /* Typography — fluid variable */
  --phere-font-display: 'Outfit', 'Inter', system-ui, sans-serif;
  --phere-font-mono:    'JetBrains Mono', 'Fira Code', monospace;
  --phere-font-serif:   'Playfair Display', Georgia, serif;

  /* Spacing rhythm — non-linear, organic */
  --phere-s1: 4px;
  --phere-s2: 7px;
  --phere-s3: 13px;
  --phere-s4: 21px;
  --phere-s5: 34px;
  --phere-s6: 55px;
  --phere-s7: 89px;

  /* Motion — spring physics */
  --phere-ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
  --phere-ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --phere-ease-inertia:  cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --phere-ease-pressure: cubic-bezier(0.68, -0.55, 0.27, 1.55);
  --phere-dur-snap:   80ms;
  --phere-dur-quick:  200ms;
  --phere-dur-smooth: 400ms;
  --phere-dur-scene:  700ms;
  --phere-dur-drift:  1200ms;

  /* Surface depth — glassmorphism stack */
  --phere-glass-1: rgba(8, 15, 26, 0.6);
  --phere-glass-2: rgba(13, 22, 36, 0.75);
  --phere-glass-3: rgba(17, 30, 48, 0.88);
  --phere-blur-1: blur(8px);
  --phere-blur-2: blur(16px);
  --phere-blur-3: blur(24px);

  /* Elevation shadows */
  --phere-shadow-1: 0 1px 3px rgba(0,0,0,0.4), 0 0 0 1px rgba(99,255,218,0.04);
  --phere-shadow-2: 0 4px 16px rgba(0,0,0,0.5), 0 0 0 1px rgba(99,255,218,0.06), 0 0 24px rgba(99,255,218,0.03);
  --phere-shadow-3: 0 8px 32px rgba(0,0,0,0.6), 0 0 0 1px rgba(99,255,218,0.1), 0 0 48px rgba(99,255,218,0.06);
  --phere-shadow-glow: 0 0 0 1px rgba(99,255,218,0.2), 0 0 24px rgba(99,255,218,0.12), 0 8px 32px rgba(0,0,0,0.5);
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 2 — PERCEPTUAL RESET & BASE LAYER
   ═══════════════════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Ambient canvas — WebGL layer sits behind everything */
#phere-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
  mix-blend-mode: screen;
}

/* Noise texture overlay — eliminates flat synthetic look */
#phere-noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' 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");
  background-size: 200px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 3 — LIVING CARD SYSTEM (replaces static cards)
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-card {
  position: relative;
  background: var(--phere-glass-2);
  border: 1px solid var(--phere-border);
  border-radius: 12px;
  padding: var(--phere-s4) var(--phere-s4);
  transition:
    border-color var(--phere-dur-smooth) var(--phere-ease-out),
    box-shadow   var(--phere-dur-smooth) var(--phere-ease-out),
    transform    var(--phere-dur-smooth) var(--phere-ease-spring);
  overflow: hidden;
  will-change: transform, box-shadow;
  -webkit-backdrop-filter: var(--phere-blur-1);
  backdrop-filter: var(--phere-blur-1);
}
@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .phere-card { background: rgba(13, 22, 36, 0.95); }
}

.phere-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(99,255,218,0.04) 0%,
    transparent 50%,
    rgba(0,229,123,0.02) 100%
  );
  opacity: 0;
  transition: opacity var(--phere-dur-smooth) var(--phere-ease-out);
}

/* Kinetic shimmer line — top edge highlight */
.phere-card::after {
  content: '';
  position: absolute;
  top: 0; left: 15%; right: 15%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(99,255,218,0.4),
    rgba(0,229,123,0.3),
    transparent
  );
  opacity: 0;
  transform: scaleX(0.3);
  transition:
    opacity var(--phere-dur-smooth) var(--phere-ease-out),
    transform var(--phere-dur-scene) var(--phere-ease-out);
}

.phere-card:hover {
  border-color: var(--phere-border-hi);
  box-shadow: var(--phere-shadow-glow);
  transform: translateY(-4px) scale(1.005);
}

.phere-card:hover::before { opacity: 1; }
.phere-card:hover::after  { opacity: 1; transform: scaleX(1); }

/* Magnetic cursor effect — applied by JS */
.phere-card.phere-magnetic {
  transition:
    border-color var(--phere-dur-smooth) var(--phere-ease-out),
    box-shadow   var(--phere-dur-smooth) var(--phere-ease-out),
    transform    var(--phere-dur-snap) linear;
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 4 — CINEMATIC BUTTON SYSTEM
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--phere-s2);
  padding: 10px 24px;
  border-radius: 8px;
  font-family: var(--phere-font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  overflow: hidden;
  transition:
    transform    var(--phere-dur-quick) var(--phere-ease-spring),
    box-shadow   var(--phere-dur-quick) var(--phere-ease-out),
    filter       var(--phere-dur-quick) var(--phere-ease-out);
  will-change: transform;
  -webkit-user-select: none;
  user-select: none;
}

/* Ripple layer */
.phere-btn .phere-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  transform: scale(0);
  animation: phereRipple 0.6s var(--phere-ease-out);
  pointer-events: none;
}

@keyframes phereRipple {
  to { transform: scale(4); opacity: 0; }
}

/* Primary variant */
.phere-btn-primary {
  background: linear-gradient(135deg, var(--phere-cyan) 0%, var(--phere-emerald) 100%);
  color: var(--phere-void);
  box-shadow: 0 0 0 0 rgba(99,255,218,0.4);
}
.phere-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99,255,218,0.3), 0 0 0 1px rgba(99,255,218,0.2);
  filter: brightness(1.1);
}
.phere-btn-primary:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: 0 0 0 2px rgba(99,255,218,0.3);
  transition-duration: var(--phere-dur-snap);
}

/* Ghost variant */
.phere-btn-ghost {
  background: transparent;
  color: var(--phere-cyan);
  border: 1px solid var(--phere-border-hi);
  box-shadow: inset 0 0 0 0 var(--phere-cyan-glow);
}
.phere-btn-ghost:hover {
  background: var(--phere-cyan-glow);
  border-color: var(--phere-cyan);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99,255,218,0.1);
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 5 — TYPOGRAPHY: Fluid + Variable
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-display {
  font-family: var(--phere-font-display);
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg,
    var(--phere-cyan) 0%,
    var(--phere-cyan-hi) 40%,
    var(--phere-emerald) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.phere-heading {
  font-family: var(--phere-font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #e2e8f0;
}

.phere-label {
  font-family: var(--phere-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--phere-cyan-dim);
}

/* Kinetic text — animated character entry */
.phere-kinetic [data-char] {
  display: inline-block;
  opacity: 0;
  transform: translateY(8px);
  animation: phereChar var(--phere-dur-smooth) var(--phere-ease-spring) forwards;
}

@keyframes phereChar {
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 6 — SCROLL REVEAL SYSTEM
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity  var(--phere-dur-scene)  var(--phere-ease-out),
    transform var(--phere-dur-scene) var(--phere-ease-spring);
}

.phere-reveal.phere-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.phere-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity   var(--phere-dur-smooth) var(--phere-ease-out),
    transform var(--phere-dur-smooth) var(--phere-ease-spring);
}

.phere-stagger.phere-revealed > * { opacity: 1; transform: translateY(0); }
.phere-stagger.phere-revealed > *:nth-child(1) { transition-delay: 0ms; }
.phere-stagger.phere-revealed > *:nth-child(2) { transition-delay: 60ms; }
.phere-stagger.phere-revealed > *:nth-child(3) { transition-delay: 120ms; }
.phere-stagger.phere-revealed > *:nth-child(4) { transition-delay: 180ms; }
.phere-stagger.phere-revealed > *:nth-child(5) { transition-delay: 240ms; }
.phere-stagger.phere-revealed > *:nth-child(6) { transition-delay: 300ms; }
.phere-stagger.phere-revealed > *:nth-child(n+7) { transition-delay: 360ms; }

/* Slide from left */
.phere-reveal-left {
  opacity: 0;
  transform: translateX(-32px);
  transition:
    opacity   var(--phere-dur-scene) var(--phere-ease-out),
    transform var(--phere-dur-scene) var(--phere-ease-spring);
}
.phere-reveal-left.phere-revealed { opacity: 1; transform: translateX(0); }

/* Scale in */
.phere-reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition:
    opacity   var(--phere-dur-smooth) var(--phere-ease-out),
    transform var(--phere-dur-smooth) var(--phere-ease-spring);
}
.phere-reveal-scale.phere-revealed { opacity: 1; transform: scale(1); }

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 7 — STAT COUNTER DISPLAYS
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-stat {
  position: relative;
  text-align: center;
}

.phere-stat-val {
  font-family: var(--phere-font-mono);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--phere-cyan);
  display: block;
  line-height: 1;
  /* Tabular nums for clean counter animation */
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.phere-stat-label {
  font-family: var(--phere-font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(99,255,218,0.4);
  margin-top: 4px;
  display: block;
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 8 — STATUS INDICATORS (living pulse)
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--phere-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.phere-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
}

.phere-status-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: 0;
  animation: pherePulse 2.4s var(--phere-ease-inertia) infinite;
}

@keyframes pherePulse {
  0%   { transform: scale(0.8); opacity: 0.6; }
  50%  { transform: scale(1.8); opacity: 0; }
  100% { transform: scale(0.8); opacity: 0; }
}

.phere-status-online  .phere-status-dot { background: var(--phere-emerald); color: var(--phere-emerald); }
.phere-status-online  { color: var(--phere-emerald); }
.phere-status-warning .phere-status-dot { background: var(--phere-gold); color: var(--phere-gold); animation-duration: 1.6s; }
.phere-status-warning { color: var(--phere-gold); }
.phere-status-error   .phere-status-dot { background: var(--phere-crimson); color: var(--phere-crimson); animation-duration: 0.8s; }
.phere-status-error   { color: var(--phere-crimson); }

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 9 — PAGE TRANSITIONS (scene continuity)
   ═══════════════════════════════════════════════════════════════════════════ */
#phere-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  pointer-events: none;
  background: linear-gradient(135deg, var(--phere-void), var(--phere-surface));
  opacity: 0;
  transition: opacity 300ms var(--phere-ease-out);
}

#phere-transition-overlay.phere-out {
  opacity: 1;
  transition: opacity 220ms var(--phere-ease-out);
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 10 — BEHAVIORAL VARIABILITY (organic grid offsets)
   ═══════════════════════════════════════════════════════════════════════════ */

/* Asymmetric hero layout */
.phere-hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--phere-s5);
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--phere-s6) var(--phere-s4);
}

/* Non-uniform card grid — breaks mechanical regularity */
.phere-organic-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

/* Cards with deliberate rhythm variance */
.phere-organic-grid > :nth-child(1)  { grid-column: span 5; }
.phere-organic-grid > :nth-child(2)  { grid-column: span 7; }
.phere-organic-grid > :nth-child(3)  { grid-column: span 4; }
.phere-organic-grid > :nth-child(4)  { grid-column: span 4; }
.phere-organic-grid > :nth-child(5)  { grid-column: span 4; }
.phere-organic-grid > :nth-child(6)  { grid-column: span 6; }
.phere-organic-grid > :nth-child(7)  { grid-column: span 6; }
.phere-organic-grid > :nth-child(n+8){ grid-column: span 4; }

@media (max-width: 860px) {
  .phere-organic-grid > * { grid-column: span 12 !important; }
}
@media (min-width: 861px) and (max-width: 1100px) {
  .phere-organic-grid > :nth-child(1)  { grid-column: span 6; }
  .phere-organic-grid > :nth-child(2)  { grid-column: span 6; }
  .phere-organic-grid > :nth-child(n+3){ grid-column: span 6; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 11 — AMBIENT GLOW GRADIENTS (surface warmth)
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-glow-cyan {
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(99,255,218,0.06) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
  animation: phereFloat 8s ease-in-out infinite;
}

.phere-glow-emerald {
  position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,229,123,0.05) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
  animation: phereFloat 11s ease-in-out infinite reverse;
}

@keyframes phereFloat {
  0%, 100% { transform: translateY(0) translateX(0); }
  33%       { transform: translateY(-20px) translateX(12px); }
  66%       { transform: translateY(8px) translateX(-16px); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 12 — LOADING STATES (purposeful, not decorative)
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-skeleton {
  background: linear-gradient(
    90deg,
    var(--phere-raised) 25%,
    var(--phere-float)  50%,
    var(--phere-raised) 75%
  );
  background-size: 400% 100%;
  animation: phereSkeleton 1.8s ease-in-out infinite;
  border-radius: 6px;
}

@keyframes phereSkeleton {
  0%   { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 13 — SECTION DIVIDERS (cinematic rhythm)
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--phere-font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(99,255,218,0.5);
  margin-bottom: var(--phere-s3);
}

.phere-section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99,255,218,0.4));
}

.phere-section-label::after {
  content: '';
  display: block;
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(99,255,218,0.15), transparent);
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 14 — INPUT SENTIENCE
   ═══════════════════════════════════════════════════════════════════════════ */
.phere-input {
  width: 100%;
  background: var(--phere-raised);
  border: 1px solid var(--phere-border);
  border-radius: 8px;
  padding: 10px 14px;
  color: #e2e8f0;
  font-family: var(--phere-font-display);
  font-size: 13px;
  outline: none;
  transition:
    border-color var(--phere-dur-quick) var(--phere-ease-out),
    box-shadow   var(--phere-dur-quick) var(--phere-ease-out),
    background   var(--phere-dur-quick) var(--phere-ease-out);
}

.phere-input:focus {
  border-color: rgba(99,255,218,0.4);
  background: var(--phere-float);
  box-shadow: 0 0 0 3px rgba(99,255,218,0.08), 0 0 16px rgba(99,255,218,0.06);
}

.phere-input::placeholder { color: rgba(99,255,218,0.2); }

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 15 — ACCESSIBILITY: Full compliance
   ═══════════════════════════════════════════════════════════════════════════ */
@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;
  }

  .phere-reveal,
  .phere-stagger > *,
  .phere-reveal-left,
  .phere-reveal-scale {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

@media (prefers-contrast: high) {
  :root {
    --phere-border: rgba(99,255,218,0.3);
    --phere-border-hi: rgba(99,255,218,0.6);
  }
  .phere-display {
    -webkit-text-fill-color: var(--phere-cyan);
  }
}

/* Focus visible — keyboard navigation */
.phere-card:focus-visible,
.phere-btn:focus-visible,
.phere-input:focus-visible {
  outline: 2px solid var(--phere-cyan);
  outline-offset: 3px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   STRATUM 16 — UPGRADE OVERLAY (applies to existing pages non-destructively)
   ═══════════════════════════════════════════════════════════════════════════ */

/* Upgrade existing .card elements system-wide */
.card, [class*="card-"] {
  transition:
    border-color var(--phere-dur-smooth) var(--phere-ease-out),
    box-shadow   var(--phere-dur-smooth) var(--phere-ease-out),
    transform    var(--phere-dur-smooth) var(--phere-ease-spring) !important;
  will-change: transform;
}

.card:hover {
  transform: translateY(-4px) scale(1.004) !important;
  box-shadow: var(--phere-shadow-glow) !important;
}

/* Upgrade existing buttons */
.btn, [class*="btn-"], button:not([class*="boot"]) {
  transition:
    transform  var(--phere-dur-quick) var(--phere-ease-spring),
    filter     var(--phere-dur-quick) var(--phere-ease-out),
    box-shadow var(--phere-dur-quick) var(--phere-ease-out) !important;
  will-change: transform;
}

.btn:hover, [class*="btn-"]:hover, button:not([class*="boot"]):hover {
  transform: translateY(-2px) !important;
}

.btn:active, button:not([class*="boot"]):active {
  transform: translateY(0px) scale(0.97) !important;
  transition-duration: var(--phere-dur-snap) !important;
}

/* Upgrade section titles */
.section-title, [class*="section-title"] {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
}

.section-title::after {
  content: '' !important;
  display: block !important;
  flex: 1 !important;
  height: 1px !important;
  background: linear-gradient(90deg, rgba(99,255,218,0.15), transparent) !important;
}

/* Smooth scrollbar */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--phere-void, #020408); }
::-webkit-scrollbar-thumb { background: rgba(99,255,218,0.2); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99,255,218,0.4); }

/* Selection color */
::selection { background: rgba(99,255,218,0.2); color: #fff; }