/* ==========================================================================
   AuCore — PREMIUM UI EXPANSION (v2.0.3)
   Developed by AuR AI 2026

   Loaded AFTER main.css — enriches the design system without replacing it:
     · expanded design tokens & premium typography scale
     · glassmorphism cards + gradient borders + aurora backgrounds
     · animated section transitions (IntersectionObserver-ready)
     · richer hero with floating orbs & 3D tilt cards
     · language switcher pill · big feature cards · stat counters
     · deep dark/light theming via [data-theme]
   ========================================================================== */

/* ============================================================ TOKENS ===== */
:root {
  --auc-grad-1: #6470f3;
  --auc-grad-2: #a855f7;
  --auc-grad-3: #22d3ee;
  --auc-glass-bg: rgba(255, 255, 255, 0.06);
  --auc-glass-brd: rgba(255, 255, 255, 0.12);
  --auc-glass-blur: 18px;
  --auc-shadow-lg: 0 24px 64px -16px rgba(80, 60, 220, 0.35);
  --auc-shadow-md: 0 10px 32px -8px rgba(80, 60, 220, 0.25);
  --auc-radius-xl: 24px;
  --auc-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --auc-font-display: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

[data-theme="light"] {
  --auc-glass-bg: rgba(255, 255, 255, 0.65);
  --auc-glass-brd: rgba(100, 112, 243, 0.18);
  --auc-shadow-lg: 0 24px 64px -20px rgba(90, 70, 230, 0.28);
}

/* ======================================================= KEYFRAMES ====== */
@keyframes auc-float {
  0%, 100% { transform: translateY(0) translateX(0); }
  33%      { transform: translateY(-26px) translateX(14px); }
  66%      { transform: translateY(14px) translateX(-18px); }
}
@keyframes auc-fade-up {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes auc-shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}
@keyframes auc-pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(100, 112, 243, 0.45); }
  70%  { box-shadow: 0 0 0 14px rgba(100, 112, 243, 0); }
  100% { box-shadow: 0 0 0 0 rgba(100, 112, 243, 0); }
}
@keyframes auc-gradient-x {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* ============================================== SCROLL REVEAL CLASSES === */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--auc-ease-out), transform 0.7s var(--auc-ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .orb, .tilt-card { animation: none !important; }
}

/* ============================================================ ORBS ====== */
.orb-field {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
  z-index: 0;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  animation: auc-float 16s ease-in-out infinite;
  will-change: transform;
}
.orb--a { width: 420px; height: 420px; top: -120px; left: -80px;  background: radial-gradient(circle at 30% 30%, rgba(100,112,243,.85), transparent 65%); }
.orb--b { width: 360px; height: 360px; top: 10%;    right: -110px; background: radial-gradient(circle at 60% 40%, rgba(168,85,247,.75), transparent 65%); animation-delay: -6s; }
.orb--c { width: 300px; height: 300px; bottom: -90px; left: 34%;   background: radial-gradient(circle at 50% 50%, rgba(34,211,238,.6), transparent 62%); animation-delay: -11s; }

/* ==================================================== GLASS CARDS ====== */
.glass {
  background: var(--auc-glass-bg);
  border: 1px solid var(--auc-glass-brd);
  backdrop-filter: blur(var(--auc-glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--auc-glass-blur)) saturate(140%);
  border-radius: var(--auc-radius-xl);
  box-shadow: var(--auc-shadow-md);
}

/* gradient-border variant */
.grad-border {
  position: relative;
  border: none;
  isolation: isolate;
}
.grad-border::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1.5px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--auc-grad-1), var(--auc-grad-2) 45%, var(--auc-grad-3));
  background-size: 220% 220%;
  animation: auc-gradient-x 9s ease infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
          mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

/* hover lift for interactive cards */
.tilt-card {
  transition:
    transform 0.45s var(--auc-ease-out),
    box-shadow 0.45s var(--auc-ease-out);
  transform-style: preserve-3d;
  will-change: transform;
}
.tilt-card:hover,
.tilt-card:focus-within {
  transform: translateY(-8px) rotateX(4deg) rotateY(-4deg);
  box-shadow: var(--auc-shadow-lg);
}

/* ===================================================== HERO UPGRADE ===== */
.hero-premium {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(72px, 12vw, 148px) 20px 96px;
}
.hero-badge-v2 {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #dfe3ff;
  background: linear-gradient(120deg, rgba(100,112,243,.25), rgba(168,85,247,.25));
  border: 1px solid rgba(160, 150, 255, 0.35);
  backdrop-filter: blur(10px);
  animation: auc-pulse-ring 3.2s infinite;
}
.hero-title-v2 {
  margin: 26px auto 18px;
  max-width: 21ch;
  font-family: var(--auc-font-display);
  font-size: clamp(2.4rem, 6.4vw, 4.4rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(115deg, #f4f5ff 15%, #b9baff 42%, #7de3ff 78%);
  background-size: 200% auto;
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  animation: auc-shimmer 7s linear infinite;
}
[data-theme="light"] .hero-title-v2 {
  background-image: linear-gradient(115deg, #171a33 15%, #5560e8 48%, #0ea5c4 82%);
  background-size: 200% auto;
}
.hero-sub-v2 {
  max-width: 62ch;
  margin: 0 auto 36px;
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  line-height: 1.75;
  color: rgba(226, 229, 255, 0.82);
}
[data-theme="light"] .hero-sub-v2 { color: rgba(38, 42, 74, 0.78); }
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.btn-primary-v2 {
  position: relative;
  padding: 15px 34px;
  border: none;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(120deg, var(--auc-grad-1), var(--auc-grad-2));
  background-size: 170% auto;
  box-shadow: 0 14px 34px -10px rgba(100, 112, 243, 0.65);
  transition: background-position .5s var(--auc-ease-out), transform .3s var(--auc-ease-out), box-shadow .3s;
}
.btn-primary-v2:hover { background-position: right center; transform: translateY(-3px); box-shadow: 0 20px 44px -12px rgba(100,112,243,.75); }
.btn-ghost-v2 {
  padding: 15px 34px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 15px;
  color: #e6e8ff;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(190,190,255,0.35);
  cursor: pointer;
  transition: background .3s, transform .3s var(--auc-ease-out);
}
[data-theme="light"] .btn-ghost-v2 { color: #33386b; border-color: rgba(80,80,180,.3); }
.btn-ghost-v2:hover { background: rgba(255,255,255,0.11); transform: translateY(-3px); }

/* hero stats strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 18px;
  max-width: 860px;
  margin: 56px auto 0;
}
.stat-cell {
  text-align: center;
  padding: 22px 12px 20px;
}
.stat-value {
  display: block;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, #9aa4ff, #67e8f9);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}
[data-theme="light"] .stat-value {
  background-image: linear-gradient(120deg, #4f56e0, #0891b2);
}
.stat-label {
  margin-top: 6px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(214, 218, 250, 0.6);
}
[data-theme="light"] .stat-label { color: rgba(60, 64, 110, 0.55); }

/* ================================================ BIG FEATURE CARDS ==== */
.feat-grid-v2 {
  display: grid;
  gap: 26px;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
}
.feat-card-v2 {
  position: relative;
  overflow: hidden;
  padding: 34px 30px 30px;
  border-radius: var(--auc-radius-xl);
}
.feat-card-v2::after {
  /* soft radial glow that follows the accent color */
  content: "";
  position: absolute;
  top: -70px; right: -70px;
  width: 210px; height: 210px;
  border-radius: 50%;
  background: var(--feat-accent, rgba(100,112,243,.28));
  filter: blur(52px);
  opacity: 0.55;
  transition: opacity .4s, transform .4s var(--auc-ease-out);
}
.feat-card-v2:hover::after { opacity: 0.95; transform: scale(1.25); }
.feat-icon {
  position: relative; z-index: 1;
  display: grid; place-items: center;
  width: 58px; height: 58px;
  border-radius: 18px;
  font-size: 27px;
  background: linear-gradient(135deg, rgba(255,255,255,.14), rgba(255,255,255,.04));
  border: 1px solid var(--auc-glass-brd);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.14);
}
.feat-title {
  position: relative; z-index: 1;
  margin-top: 20px;
  font-size: 1.22rem; font-weight: 750; letter-spacing: -0.01em;
}
.feat-desc {
  position: relative; z-index: 1;
  margin-top: 10px;
  font-size: .94rem; line-height: 1.68;
  color: rgba(222, 225, 252, 0.72);
}
[data-theme="light"] .feat-desc { color: rgba(52, 56, 96, 0.75); }
.feat-tags {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: 7px;
  margin-top: 18px;
}
.tag-chip {
  padding: 5px 12px;
  font-size: 11.5px; font-weight: 650; letter-spacing: .03em;
  border-radius: 999px;
  color: #cdd2ff;
  background: rgba(100,112,243,.14);
  border: 1px solid rgba(130,130,240,.28);
}
[data-theme="light"] .tag-chip { color: #4a50b0; background: rgba(90,95,235,.09); border-color: rgba(90,95,235,.22); }

/* ================================================= SECTION HEADINGS ==== */
.section-head-v2 { text-align: center; margin-bottom: 54px; }
.section-kicker {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: #8fd8ff;
  background: rgba(34,211,238,.1);
  border: 1px solid rgba(34,211,238,.3);
}
.section-title-v2 {
  margin: 18px 0 12px;
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 800; letter-spacing: -0.025em; line-height: 1.15;
}
.section-sub-v2 {
  max-width: 60ch; margin: 0 auto;
  font-size: 1.03rem; line-height: 1.7;
  color: rgba(222, 225, 252, 0.66);
}
[data-theme="light"] .section-sub-v2 { color: rgba(56, 60, 104, 0.7); }

/* ============================================== LANGUAGE SWITCHER ====== */
.auc-lang { position: relative; display: inline-block; margin-left: 10px; }
.auc-lang__btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 13px;
  font-size: 13px; font-weight: 650;
  color: inherit;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--auc-glass-brd);
  border-radius: 999px;
  cursor: pointer;
  transition: background .25s, transform .25s var(--auc-ease-out);
}
.auc-lang__btn:hover { background: rgba(255,255,255,0.13); transform: translateY(-1px); }
.auc-lang__code { letter-spacing: .06em; }
.auc-lang__menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 172px;
  padding: 7px;
  z-index: 90;
  background: #191c33;
  border: 1px solid var(--auc-glass-brd);
  border-radius: 16px;
  box-shadow: var(--auc-shadow-lg);
}
[data-theme="light"] .auc-lang__menu { background: #ffffff; border-color: rgba(90,95,235,.18); }
.auc-lang__opt {
  display: flex; align-items: center; gap: 9px;
  width: 100%;
  padding: 9px 12px;
  font-size: 13.5px; font-weight: 550;
  color: inherit;
  text-align: left;
  background: transparent;
  border: none; border-radius: 11px;
  cursor: pointer;
  transition: background .2s;
}
.auc-lang__opt:hover { background: rgba(255,255,255,0.08); }
[data-theme="light"] .auc-lang__opt:hover { background: rgba(90,95,235,0.08); }
.auc-lang__opt.active {
  background: rgba(100,112,243,0.18);
  font-weight: 700;
}

/* =============================================== CTA BANNER PANEL ====== */
.cta-banner-v2 {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 72px) clamp(24px, 5vw, 72px);
  border-radius: calc(var(--auc-radius-xl) + 6px);
  text-align: center;
  background:
    radial-gradient(900px 340px at 15% -20%, rgba(100,112,243,.4), transparent 60%),
    radial-gradient(700px 300px at 88% 120%, rgba(168,85,247,.35), transparent 60%),
    rgba(17, 19, 40, 0.72);
  border: 1px solid var(--auc-glass-brd);
  backdrop-filter: blur(var(--auc-glass-blur));
}
[data-theme="light"] .cta-banner-v2 {
  background:
    radial-gradient(900px 340px at 15% -20%, rgba(100,112,243,.16), transparent 60%),
    radial-gradient(700px 300px at 88% 120%, rgba(168,85,247,.14), transparent 60%),
    #f6f7ff;
}
.cta-banner-v2 h2 {
  margin-bottom: 12px;
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight: 800; letter-spacing: -0.02em;
}
.cta-banner-v2 p {
  margin-bottom: 28px;
  color: rgba(222,225,252,.7);
}
[data-theme="light"] .cta-banner-v2 p { color: rgba(56,60,104,.72); }

/* ============================================== CATALOG / TABLE V2 ===== */
.catalog-table-v2 { width: 100%; border-collapse: separate; border-spacing: 0; }
.catalog-table-v2 th {
  padding: 14px 18px;
  text-align: left;
  font-size: 11.5px; font-weight: 750;
  letter-spacing: .12em; text-transform: uppercase;
  color: rgba(200,205,245,.6);
  border-bottom: 1px solid var(--auc-glass-brd);
}
[data-theme="light"] .catalog-table-v2 th { color: rgba(70,74,124,.6); }
.catalog-table-v2 td {
  padding: 15px 18px;
  font-size: 14px;
  border-bottom: 1px solid rgba(140,145,220,.09);
  vertical-align: top;
}
.catalog-table-v2 tr { transition: background .2s; }
.catalog-table-v2 tbody tr:hover { background: rgba(120,125,255,0.06); }
.endpoint-pill {
  font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
  font-size: 12.5px;
  padding: 4px 10px;
  border-radius: 8px;
  color: #9fe8ff;
  background: rgba(34,211,238,.09);
  border: 1px solid rgba(34,211,238,.22);
}
[data-theme="light"] .endpoint-pill { color: #0369a1; background: rgba(8,145,178,.07); border-color: rgba(8,145,178,.2); }

/* category tab pills */
.cat-tabs {
  display: flex; flex-wrap: wrap; gap: 9px;
  justify-content: center;
  margin-bottom: 34px;
}
.cat-tab {
  padding: 9px 18px;
  font-size: 13px; font-weight: 650;
  color: rgba(216,219,250,.75);
  background: rgba(255,255,255,.05);
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: all .25s var(--auc-ease-out);
}
[data-theme="light"] .cat-tab { color: rgba(56,60,104,.75); background: rgba(90,95,235,.06); }
.cat-tab:hover { transform: translateY(-2px); color: #fff; }
[data-theme="light"] .cat-tab:hover { color: #373bb0; }
.cat-tab.active {
  color: #fff;
  background: linear-gradient(120deg, var(--auc-grad-1), var(--auc-grad-2));
  border-color: transparent;
  box-shadow: 0 8px 22px -8px rgba(100,112,243,.55);
}

/* JSON preview block inside catalog cards */
.json-preview {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 12px; line-height: 1.6;
  color: #a5f3fc;
  background: rgba(2, 8, 26, 0.6);
  border: 1px solid rgba(120,130,255,.12);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 190px;
  overflow: auto;
}
[data-theme="light"] .json-preview { background: #101427; color: #93e9fb; }

/* ================================================= FOOTER POLISH ======= */
.footer-v2 {
  border-top: 1px solid var(--auc-glass-brd);
  padding: 46px 20px 30px;
}
.footer-grid {
  display: grid;
  gap: 34px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  max-width: 1080px;
  margin: 0 auto;
}
.footer-col h4 {
  margin-bottom: 14px;
  font-size: 12.5px; font-weight: 750;
  letter-spacing: .14em; text-transform: uppercase;
  color: rgba(206,209,245,.55);
}
.footer-col a {
  display: block;
  padding: 4.5px 0;
  font-size: 14px;
  color: rgba(222,225,252,.72);
  text-decoration: none;
  transition: color .2s, transform .2s;
}
[data-theme="light"] .footer-col a { color: rgba(52,56,96,.75); }
.footer-col a:hover { color: #9aa4ff; transform: translateX(3px); }

/* ============================================== MISC PREMIUM BITS ===== */
.badge-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px 1px rgba(52, 211, 153, .8);
  animation: auc-pulse-ring 2.4s infinite;
}
.divider-glow {
  height: 1px;
  max-width: 720px;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, rgba(140,145,255,.5), transparent);
}
.num-counter {
  font-variant-numeric: tabular-nums;
}

/* responsive guardrails */
@media (max-width: 640px) {
  .hero-cta-row .btn-primary-v2,
  .hero-cta-row .btn-ghost-v2 { width: 100%; justify-content: center; text-align: center; }
  .stat-strip { gap: 10px; grid-template-columns: repeat(2, 1fr); }
  .auc-lang { margin-left: 4px; }
}