/* =========================================================
   Cloomic Hub — Main Stylesheet
   ========================================================= */

/* ── Variables ── */
:root {
  --bg       : #070b12;
  --surface  : rgba(255, 255, 255, 0.04);
  --surf-hov : rgba(255, 255, 255, 0.07);
  --border   : rgba(255, 255, 255, 0.07);
  --bord-hov : rgba(255, 255, 255, 0.14);
  --t1       : #e8edf5;
  --t2       : #7f8fa4;
  --t3       : #364154;
  --radius   : 20px;
  --font     : 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono     : 'JetBrains Mono', 'Fira Code', monospace;
  --maxw     : 1080px;
  --dur      : 0.4s;
  --ease     : cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--t1);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }

/* ── Background Canvas ── */
#bgCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── Nebula Blobs ── */
.bg-nebula {
  position: fixed;
  border-radius: 50%;
  filter: blur(110px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.10;
  animation: nebulaDrift 22s ease-in-out infinite alternate;
}
.bg-nebula-1 {
  width: 640px; height: 640px;
  background: radial-gradient(circle, #00d4aa 0%, transparent 70%);
  top: -220px; right: -120px;
}
.bg-nebula-2 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, #7c6af7 0%, transparent 70%);
  bottom: -160px; left: -120px;
  animation-direction: alternate-reverse;
  animation-duration: 28s;
}

/* ── Grid Overlay ── */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 85% 85% at 50% 45%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 85% 85% at 50% 45%, black 30%, transparent 100%);
}

/* ── Page Wrapper ── */
.page-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* =========================================================
   HEADER
   ========================================================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(7, 11, 18, 0.72);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border);
  animation: slideDown 0.7s var(--ease) both;
}

.logo {
  display: flex;
  align-items: center;
  gap: 11px;
}
.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: logoPulse 5s ease-in-out infinite;
}
.logo-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, #e8edf5 0%, #8fa0b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--t2);
  letter-spacing: 0.04em;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00d4aa, #7c6af7);
  animation: dotPulse 2.8s ease-in-out infinite;
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding: 168px 48px 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72vh;
  text-align: center;
}
.hero-inner {
  max-width: 680px;
  animation: heroFadeUp 1s var(--ease) 0.15s both;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 30px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 100px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--t2);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #00d4aa;
  box-shadow: 0 0 8px #00d4aa88;
  animation: dotPulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(44px, 8.5vw, 92px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
}
.title-top  { display: block; color: var(--t1); }
.title-bottom { display: block; margin-top: 6px; }

.gradient-text {
  display: inline-block;
  background: linear-gradient(135deg, #00d4aa 0%, #7c6af7 55%, #a78bfa 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradShift 6s ease infinite;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.hero-sub {
  font-size: 17px;
  color: var(--t2);
  font-weight: 400;
  margin-bottom: 52px;
  line-height: 1.75;
}

.scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--t3);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.scroll-track {
  width: 1px; height: 38px;
  background: rgba(255,255,255,0.1);
  border-radius: 1px;
  overflow: hidden;
  position: relative;
}
.scroll-thumb {
  width: 100%; height: 50%;
  background: linear-gradient(to bottom, transparent, var(--t2));
  animation: scrollAnim 2.2s ease-in-out infinite;
}

/* =========================================================
   SITES SECTION
   ========================================================= */
.sites-section {
  padding: 0 48px 100px;
  max-width: calc(var(--maxw) + 96px);
  margin: 0 auto;
  width: 100%;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  animation: heroFadeUp 0.8s var(--ease) 0.35s both;
}
.section-pre {
  display: block;
  font-size: 11.5px;
  color: var(--t2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 5px;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--t1);
}
.section-meta { text-align: right; line-height: 1.1; }
.meta-num {
  display: block;
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #00d4aa, #7c6af7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.meta-lbl {
  font-size: 11px;
  color: var(--t3);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

/* ── Grid ── */
.sites-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

/* =========================================================
   SITE CARD
   ========================================================= */
.site-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  /* entrance state */
  opacity: 0;
  transform: translateY(44px) scale(0.96);
  transition:
    border-color var(--dur) var(--ease),
    box-shadow   var(--dur) var(--ease);
  transform-style: preserve-3d;
  will-change: transform, opacity;
}
.site-card.visible {
  animation: cardReveal 0.75s var(--ease) both;
}
.site-card.visible:nth-child(2) {
  animation-delay: 0.13s;
}

.site-card:hover {
  border-color: rgba(var(--rgb1), 0.22);
  box-shadow:
    0 24px 64px rgba(0,0,0,0.55),
    0  0   50px rgba(var(--rgb1), 0.09);
}

/* Glow blur layer */
.card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 65% 55% at 50% 0%, var(--c1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
  pointer-events: none;
  z-index: 0;
}
.site-card:hover .card-glow { opacity: 0.065; }

/* Animated top border gradient */
.card-top-border {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--c1) 30%, var(--c2) 70%, transparent 100%);
  opacity: 0.45;
  transition: opacity var(--dur) var(--ease);
  z-index: 1;
}
.site-card:hover .card-top-border { opacity: 1; }

/* ── Card Body ── */
.card-body {
  position: relative;
  z-index: 2;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  height: 100%;
}

/* top row: icon + status */
.card-row-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.card-icon-box {
  width: 54px; height: 54px;
  border-radius: 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c1);
  transition:
    background  var(--dur) var(--ease),
    box-shadow  var(--dur) var(--ease);
}
.site-card:hover .card-icon-box {
  background: rgba(var(--rgb1), 0.10);
  box-shadow: 0 0 22px rgba(var(--rgb1), 0.18);
}

.card-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.18);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  color: #4ade80;
  letter-spacing: 0.04em;
}
.status-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 6px #4ade8099;
  animation: statusBlink 2.2s ease-in-out infinite;
}

/* name block */
.card-name-block {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.card-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--t1);
  letter-spacing: -0.022em;
  line-height: 1.2;
}
.card-name-cn {
  font-size: 13px;
  color: var(--t2);
  font-weight: 400;
}

/* description */
.card-desc {
  font-size: 14px;
  color: var(--t2);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: auto;
}
.tag {
  padding: 3px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  color: var(--t2);
  letter-spacing: 0.03em;
  transition:
    background    var(--dur) var(--ease),
    border-color  var(--dur) var(--ease),
    color         var(--dur) var(--ease);
}
.site-card:hover .tag {
  background:   rgba(var(--rgb1), 0.08);
  border-color: rgba(var(--rgb1), 0.20);
  color: var(--c1);
}

/* bottom row: domain + enter button */
.card-row-bot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.card-domain {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--t3);
  font-style: normal;
}

.enter-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  background: var(--c1);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: #070b12;
  white-space: nowrap;
  transition:
    transform    0.22s var(--ease),
    box-shadow   0.22s var(--ease),
    gap          0.22s var(--ease);
}
.enter-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 6px 24px rgba(var(--rgb1), 0.45);
  gap: 11px;
}
.enter-btn:active { transform: scale(0.97); }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { margin-top: auto; padding: 0 48px 32px; }
.footer-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 40%, var(--border) 60%, transparent);
  margin-bottom: 24px;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy   { font-size: 13px; color: var(--t3); }
.footer-domain { font-family: var(--mono); font-size: 12px; color: var(--t3); opacity: 0.5; }

.footer-admin-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  color: var(--t3);
  opacity: 0.25;
  border-radius: 8px;
  transition: opacity 0.3s, color 0.3s;
}
.footer-admin-link:hover { opacity: 0.75; color: var(--t2); }

/* =========================================================
   KEYFRAMES
   ========================================================= */
@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes cardReveal {
  from { opacity: 0; transform: translateY(44px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0)    scale(1);    }
}

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

@keyframes nebulaDrift {
  0%   { transform: translate(0,   0)  scale(1);   }
  100% { transform: translate(28px, 18px) scale(1.12); }
}

@keyframes logoPulse {
  0%,100% { filter: drop-shadow(0 0 5px rgba(0,212,170,0.45)); }
  50%     { filter: drop-shadow(0 0 12px rgba(124,106,247,0.65)); }
}

@keyframes dotPulse {
  0%,100% { opacity: 1; }
  50%     { opacity: 0.35; }
}

@keyframes statusBlink {
  0%,100% { opacity: 1; }
  50%     { opacity: 0.25; }
}

@keyframes scrollAnim {
  0%        { transform: translateY(-100%); }
  40%, 55%  { transform: translateY(0);     }
  100%      { transform: translateY(200%);  }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 840px) {
  .sites-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 640px) {
  .header { padding: 14px 20px; }

  .hero {
    padding: 120px 20px 56px;
    min-height: 60vh;
  }
  .hero-title { font-size: clamp(38px, 11vw, 60px); }
  .hero-sub   { font-size: 15px; margin-bottom: 36px; }

  .sites-section { padding: 0 20px 60px; }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .section-meta { text-align: left; }

  .card-body { padding: 20px; }

  .footer { padding: 0 20px 24px; }
}

@media (max-width: 400px) {
  .card-row-bot { flex-direction: column; align-items: flex-start; gap: 12px; }
  .enter-btn { align-self: flex-end; }
}