/* ═══════════════════════════════════════════════════════════
   Opcelerate Neural — Agentic Art Deco v2
   Cinematic gold · emerald · geometric agents · 1920s × AI
   ═══════════════════════════════════════════════════════════ */

:root {
  --deco-gold: #d4af37;
  --deco-gold-bright: #f0d78c;
  --deco-gold-deep: #8a7020;
  --deco-gold-soft: rgba(212, 175, 55, 0.2);
  --deco-gold-line: rgba(212, 175, 55, 0.55);
  --deco-gold-glow: rgba(212, 175, 55, 0.35);
  --deco-emerald: #1a4d3e;
  --deco-emerald-bright: #3d9b7a;
  --deco-emerald-soft: rgba(61, 155, 122, 0.2);
  --deco-ink: #07070a;
  --deco-cream: #f7f1e4;
}

html[data-theme="dark"],
html:not([data-theme]) {
  --deco-gold: #e8c547;
  --deco-gold-bright: #ffe9a0;
  --deco-gold-soft: rgba(232, 197, 71, 0.22);
  --deco-gold-line: rgba(232, 197, 71, 0.5);
  --deco-gold-glow: rgba(232, 197, 71, 0.4);
  --deco-emerald-bright: #4ec9a0;
}

html[data-theme="paper"],
html[data-theme="light"],
html[data-theme="read"] {
  --deco-gold: #b8922a;
  --deco-gold-bright: #d4af37;
  --deco-gold-soft: rgba(184, 146, 42, 0.18);
  --deco-gold-line: rgba(184, 146, 42, 0.5);
  --deco-gold-glow: rgba(184, 146, 42, 0.28);
}

/* ════════════ STAGE: cinematic deco ════════════ */
.stage-deco-sunburst {
  position: absolute;
  width: min(140vw, 1100px);
  height: min(140vw, 1100px);
  left: 42%;
  top: 42%;
  transform: translate(-50%, -50%);
  background:
    repeating-conic-gradient(
      from -2deg at 50% 50%,
      transparent 0deg 5.5deg,
      var(--deco-gold-soft) 5.5deg 6.2deg,
      transparent 6.2deg 11.5deg,
      rgba(61, 155, 122, 0.08) 11.5deg 12deg
    );
  opacity: 0.55;
  mask-image: radial-gradient(circle at 50% 50%, #000 0%, #000 28%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0%, #000 28%, transparent 72%);
  animation: decoSunSpin 120s linear infinite;
  pointer-events: none;
  will-change: transform;
}

.stage-deco-sunburst::after {
  content: "";
  position: absolute;
  inset: 28%;
  border-radius: 50%;
  border: 1px solid var(--deco-gold-line);
  box-shadow:
    0 0 0 8px rgba(212, 175, 55, 0.04),
    inset 0 0 0 1px rgba(212, 175, 55, 0.12),
    0 0 60px var(--deco-gold-soft);
  opacity: 0.7;
}

.stage-deco-chevrons {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    repeating-linear-gradient(
      135deg,
      transparent 0 22px,
      var(--deco-gold-line) 22px 23px,
      transparent 23px 44px
    ),
    repeating-linear-gradient(
      45deg,
      transparent 0 40px,
      rgba(61, 155, 122, 0.15) 40px 41px,
      transparent 41px 80px
    );
  mask-image: radial-gradient(ellipse 90% 70% at 50% 45%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 45%, #000 10%, transparent 75%);
  pointer-events: none;
}

.stage-deco-constellation {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.85;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='560' height='420' viewBox='0 0 560 420' fill='none'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0' y1='0' x2='1' y2='1'%3E%3Cstop stop-color='%23e8c547' stop-opacity='0.9'/%3E%3Cstop offset='1' stop-color='%234ec9a0' stop-opacity='0.5'/%3E%3C/linearGradient%3E%3Cfilter id='glow'%3E%3CfeGaussianBlur stdDeviation='1.2' result='b'/%3E%3CfeMerge%3E%3CfeMergeNode in='b'/%3E%3CfeMergeNode in='SourceGraphic'/%3E%3C/feMerge%3E%3C/filter%3E%3C/defs%3E%3Cg stroke='url(%23g)' stroke-width='1' opacity='0.75' filter='url(%23glow)'%3E%3Cpath d='M48 92 L130 54 L210 128 L300 78 L390 150 L470 100 L530 170'/%3E%3Cpath d='M70 320 L160 250 L250 310 L340 240 L430 300 L520 250'/%3E%3Cpath d='M130 54 L160 250'/%3E%3Cpath d='M210 128 L250 310'/%3E%3Cpath d='M300 78 L340 240'/%3E%3Cpath d='M390 150 L430 300'/%3E%3Cpath d='M210 128 L300 78 L250 310' opacity='0.5'/%3E%3C/g%3E%3Cg fill='%23e8c547' filter='url(%23glow)'%3E%3Ccircle cx='48' cy='92' r='3.5'/%3E%3Ccircle cx='130' cy='54' r='5'/%3E%3Ccircle cx='210' cy='128' r='4'/%3E%3Ccircle cx='300' cy='78' r='4.5'/%3E%3Ccircle cx='390' cy='150' r='5'/%3E%3Ccircle cx='470' cy='100' r='3.5'/%3E%3Ccircle cx='530' cy='170' r='4'/%3E%3Ccircle cx='70' cy='320' r='3.5'/%3E%3Ccircle cx='160' cy='250' r='4.5'/%3E%3Ccircle cx='250' cy='310' r='5'/%3E%3Ccircle cx='340' cy='240' r='4'/%3E%3Ccircle cx='430' cy='300' r='4.5'/%3E%3Ccircle cx='520' cy='250' r='3.5'/%3E%3C/g%3E%3Cg fill='%234ec9a0' opacity='0.85'%3E%3Ccircle cx='130' cy='54' r='2'/%3E%3Ccircle cx='250' cy='310' r='2'/%3E%3Ccircle cx='390' cy='150' r='2'/%3E%3C/g%3E%3C/svg%3E");
  background-size: min(78vw, 640px) auto;
  background-repeat: no-repeat;
  background-position: 88% 12%;
  animation: decoConstPulse 7s ease-in-out infinite;
}

/* Stepped arch behind content */
.stage-deco-arch {
  position: absolute;
  left: 50%;
  top: 52%;
  transform: translate(-50%, -50%);
  width: min(92vw, 980px);
  height: min(72vh, 620px);
  pointer-events: none;
  opacity: 0.45;
  border: 1px solid var(--deco-gold-line);
  border-radius: 48% 48% 12px 12px / 28% 28% 12px 12px;
  box-shadow:
    inset 0 0 0 6px rgba(212, 175, 55, 0.04),
    0 0 80px rgba(212, 175, 55, 0.06);
}
.stage-deco-arch::before,
.stage-deco-arch::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: inherit;
}
.stage-deco-arch::after {
  inset: 20px;
  border-color: rgba(61, 155, 122, 0.12);
}

@keyframes decoSunSpin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}
@keyframes decoConstPulse {
  0%, 100% { opacity: 0.55; filter: brightness(0.95); }
  50% { opacity: 0.95; filter: brightness(1.15); }
}
@keyframes decoShimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
@keyframes decoNodePulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--deco-gold-glow); }
  50% { box-shadow: 0 0 0 6px transparent; }
}

/* ════════════ ORNAMENTS ════════════ */
.deco-frame {
  position: relative;
  padding: 1.15rem 1.25rem 1.25rem;
  border: 1px solid var(--deco-gold-line);
  border-radius: 4px;
  background:
    linear-gradient(180deg, rgba(212, 175, 55, 0.04), transparent 40%),
    color-mix(in srgb, var(--bg-elev, rgba(18,18,24,0.5)) 88%, transparent);
  box-shadow:
    0 0 0 4px rgba(212, 175, 55, 0.04),
    0 24px 60px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(12px) saturate(1.1);
}

/* Corner brackets — thick deco corners */
.deco-frame::before,
.deco-frame::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  pointer-events: none;
  z-index: 3;
}
.deco-frame::before {
  top: -1px; left: -1px;
  border-top: 3px solid var(--deco-gold);
  border-left: 3px solid var(--deco-gold);
  box-shadow:
    8px 8px 0 -5px var(--deco-gold-bright),
    inset 10px 10px 0 -8px transparent;
}
.deco-frame::after {
  bottom: -1px; right: -1px;
  border-bottom: 3px solid var(--deco-gold);
  border-right: 3px solid var(--deco-gold);
  box-shadow: -8px -8px 0 -5px var(--deco-emerald-bright);
}

/* Extra corners via inner spans */
.deco-corners {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
}
.deco-corners span {
  position: absolute;
  width: 22px;
  height: 22px;
}
.deco-corners .tr {
  top: -1px; right: -1px;
  border-top: 3px solid var(--deco-gold);
  border-right: 3px solid var(--deco-gold);
}
.deco-corners .bl {
  bottom: -1px; left: -1px;
  border-bottom: 3px solid var(--deco-gold);
  border-left: 3px solid var(--deco-gold);
}

/* Double gold rule with diamond + agent node */
.deco-rule {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0.15rem 0 0.75rem;
  max-width: 16rem;
  color: var(--deco-gold);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 800;
}
.deco-rule::before,
.deco-rule::after {
  content: "";
  flex: 1;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--deco-gold) 20%,
    var(--deco-gold-bright) 50%,
    var(--deco-gold) 80%,
    transparent
  );
  background-size: 200% 100%;
  animation: decoShimmer 6s linear infinite;
  box-shadow: 0 4px 0 -2px var(--deco-gold-soft);
  opacity: 0.85;
}
.deco-rule .diamond {
  width: 9px;
  height: 9px;
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--deco-gold-bright), var(--deco-gold-deep, #8a7020));
  box-shadow:
    0 0 0 3px var(--deco-gold-soft),
    0 0 12px var(--deco-gold-glow);
  flex-shrink: 0;
}

/* Fan */
.deco-fan {
  width: 72px;
  height: 36px;
  margin: 0 0 0.45rem;
  opacity: 0.9;
  background: linear-gradient(180deg, var(--deco-gold-bright), var(--deco-gold));
  filter: drop-shadow(0 0 10px var(--deco-gold-soft));
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 50'%3E%3Cpath fill='black' d='M50 48 L6 10 Q50 -8 94 10 Z'/%3E%3Cpath fill='black' d='M50 48 L22 8 Q50 -2 78 8 Z' opacity='.55'/%3E%3Cpath fill='black' d='M50 48 L36 6 Q50 2 64 6 Z' opacity='.35'/%3E%3Ccircle cx='50' cy='46' r='3.5'/%3E%3C/svg%3E") center / contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 50'%3E%3Cpath fill='black' d='M50 48 L6 10 Q50 -8 94 10 Z'/%3E%3Cpath fill='black' d='M50 48 L22 8 Q50 -2 78 8 Z' opacity='.55'/%3E%3Cpath fill='black' d='M50 48 L36 6 Q50 2 64 6 Z' opacity='.35'/%3E%3Ccircle cx='50' cy='46' r='3.5'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* Eyebrow */
.eyebrow.deco-eyebrow,
.deco-eyebrow {
  position: relative;
  border-color: var(--deco-gold-line) !important;
  background: linear-gradient(135deg, var(--deco-gold-soft), transparent 70%) !important;
  box-shadow: 0 0 20px var(--deco-gold-soft);
}
.eyebrow.deco-eyebrow::before,
.deco-eyebrow::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 50%;
  width: 8px;
  height: 8px;
  transform: translateY(-50%) rotate(45deg);
  background: var(--deco-gold);
  box-shadow: 0 0 8px var(--deco-gold-glow);
}

/* Agentic badge — premium */
.deco-agent-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 1rem 0.45rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--deco-gold-line);
  background:
    linear-gradient(120deg, var(--deco-gold-soft), transparent 55%),
    linear-gradient(180deg, rgba(255,255,255,0.06), transparent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: inherit;
  box-shadow:
    0 0 0 1px rgba(212, 175, 55, 0.08),
    0 8px 24px rgba(0, 0, 0, 0.12);
}
.deco-agent-badge .node {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--deco-gold);
  position: relative;
  flex-shrink: 0;
  background: radial-gradient(circle at 40% 35%, var(--deco-gold-bright), transparent 55%);
  animation: decoNodePulse 2.8s ease-in-out infinite;
}
.deco-agent-badge .node::before {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--deco-gold-bright);
  top: 7px;
  left: 7px;
  box-shadow:
    8px -1px 0 -1px var(--deco-emerald-bright),
    3px 8px 0 -1.5px var(--deco-gold);
}
.deco-agent-badge .node::after {
  content: "";
  position: absolute;
  width: 11px;
  height: 1.5px;
  background: linear-gradient(90deg, var(--deco-gold), var(--deco-emerald-bright));
  top: 10px;
  left: 12px;
  opacity: 0.85;
}

/* Headline shimmer on accent words */
.hero h1 .line-accent,
h1.deco-headline .line-accent {
  background: linear-gradient(
    105deg,
    var(--accent, #e8842a) 0%,
    var(--deco-gold-bright) 35%,
    var(--accent-2, #f0a35a) 55%,
    var(--deco-gold) 75%,
    var(--accent, #e8842a) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: decoShimmer 5s linear infinite;
  filter: drop-shadow(0 0 20px var(--deco-gold-soft));
}

/* Buttons: gold rim + emerald glow */
.btn-primary,
.fast-btn.primary,
.nav-cta {
  position: relative;
  isolation: isolate;
  box-shadow:
    0 0 0 1px var(--deco-gold-line),
    0 0 24px var(--deco-gold-soft),
    0 12px 32px color-mix(in srgb, var(--accent, #e8842a) 25%, transparent) !important;
}
.btn-primary::after,
.fast-btn.primary::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(
    120deg,
    transparent 30%,
    rgba(255, 233, 160, 0.45) 50%,
    transparent 70%
  );
  background-size: 200% 100%;
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s;
  animation: decoShimmer 3s linear infinite;
  pointer-events: none;
}
.btn-primary:hover::after,
.fast-btn.primary:hover::after {
  opacity: 1;
}
.btn-primary:hover,
.fast-btn.primary:hover,
.nav-cta:hover {
  box-shadow:
    0 0 0 1px var(--deco-gold-bright),
    0 0 36px var(--deco-gold-glow),
    0 14px 36px color-mix(in srgb, var(--accent, #e8842a) 32%, transparent) !important;
}

/* Side card / trays — museum frame */
.side-card,
.fast-tray,
.deco-panel {
  position: relative;
  border: 1px solid var(--deco-gold-line) !important;
  border-radius: 6px !important;
  background-image:
    linear-gradient(180deg, rgba(212, 175, 55, 0.07), transparent 35%),
    linear-gradient(var(--deco-gold), var(--deco-gold)),
    linear-gradient(var(--deco-gold), var(--deco-gold)),
    linear-gradient(var(--deco-gold), var(--deco-gold)),
    linear-gradient(var(--deco-gold), var(--deco-gold)) !important;
  background-size:
    auto,
    22px 2.5px, 2.5px 22px,
    22px 2.5px, 2.5px 22px !important;
  background-position:
    0 0,
    14px 10px, 10px 14px,
    calc(100% - 14px) calc(100% - 10px), calc(100% - 10px) calc(100% - 14px) !important;
  background-repeat: no-repeat !important;
  box-shadow:
    0 0 0 5px rgba(212, 175, 55, 0.05),
    0 20px 50px rgba(0, 0, 0, 0.2) !important;
}

/* Vertical pilasters */
.welcome.deco-welcome {
  position: relative;
}
.welcome.deco-welcome::before,
.welcome.deco-welcome::after {
  content: "";
  position: absolute;
  top: 6%;
  bottom: 6%;
  width: 4px;
  pointer-events: none;
  z-index: 2;
  opacity: 0.75;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--deco-gold) 8%,
    var(--deco-gold-bright) 50%,
    var(--deco-gold) 92%,
    transparent 100%
  );
  border-radius: 2px;
}
.welcome.deco-welcome::before {
  left: 0.2rem;
  box-shadow: 5px 0 0 -2px var(--deco-gold-soft), 0 0 20px var(--deco-gold-soft);
}
.welcome.deco-welcome::after {
  right: 0.2rem;
  box-shadow: -5px 0 0 -2px var(--deco-emerald-soft), 0 0 20px var(--deco-gold-soft);
}

/* Site-page cards */
.card.deco::before,
.agent-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--deco-gold), transparent);
  opacity: 0.75;
}

/* Floating agent nodes on stage (optional HTML) */
.deco-agent-nodes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.deco-agent-nodes i {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--deco-gold-bright);
  box-shadow: 0 0 0 3px var(--deco-gold-soft), 0 0 16px var(--deco-gold-glow);
  animation: decoNodePulse 3s ease-in-out infinite;
}
.deco-agent-nodes i:nth-child(1) { top: 18%; left: 12%; animation-delay: 0s; }
.deco-agent-nodes i:nth-child(2) { top: 28%; right: 16%; animation-delay: 0.6s; background: var(--deco-emerald-bright); }
.deco-agent-nodes i:nth-child(3) { bottom: 22%; left: 22%; animation-delay: 1.1s; }
.deco-agent-nodes i:nth-child(4) { bottom: 30%; right: 12%; animation-delay: 1.7s; background: var(--deco-emerald-bright); }
.deco-agent-nodes i:nth-child(5) { top: 48%; left: 8%; animation-delay: 0.3s; width: 5px; height: 5px; }

@media (max-width: 900px) {
  .stage-deco-sunburst { opacity: 0.32; width: 160vw; height: 160vw; }
  .stage-deco-constellation {
    opacity: 0.5;
    background-position: 100% 6%;
    background-size: 70vw auto;
  }
  .stage-deco-arch { display: none; }
  .welcome.deco-welcome::before,
  .welcome.deco-welcome::after { display: none; }
  .deco-frame { padding: 0.9rem 0.95rem; }
  .deco-agent-nodes { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .stage-deco-sunburst,
  .stage-deco-constellation,
  .deco-rule::before,
  .deco-rule::after,
  .deco-agent-badge .node,
  .deco-agent-nodes i,
  .hero h1 .line-accent,
  h1.deco-headline .line-accent,
  .btn-primary::after,
  .fast-btn.primary::after {
    animation: none !important;
  }
}