/* ═══════════════════════════════════════════════════════════════
   天启 Apocalypse — Global Styles  (Asstar-inspired dark sci-fi theme)
═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@400;500;700&family=JetBrains+Mono&display=swap');

/* ── Design tokens ───────────────────────────────────────────── */
:root {
  --bg:           #050508;
  --bg-1:         #0a0a12;
  --bg-2:         #0f0f1a;
  --glass-bg:     rgba(10, 12, 25, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --accent:       #6c63ff;
  --accent-2:     #00d4ff;
  --accent-glow:  rgba(108, 99, 255, 0.35);
  --text-1:       #f0f0f8;
  --text-2:       #8888aa;
  --text-3:       #55556a;
  --border:       rgba(255,255,255,0.07);
  --success:      #22d3a5;
  --danger:       #ff4d6d;
  --font-body:    'Inter', sans-serif;
  --font-display: 'Orbitron', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --radius:       12px;
  --radius-sm:    8px;
  --shadow:       0 8px 32px rgba(0,0,0,0.5);
  --transition:   0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset & Base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-1);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select {
  font-family: inherit;
  background: transparent;
  color: var(--text-1);
  border: none;
  outline: none;
}

/* ── Noise overlay ────────────────────────────────────────────── */
.noise-overlay {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}

/* ── Canvas background ────────────────────────────────────────── */
#canvas-container {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
}

/* ── Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

/* ── Navigation ───────────────────────────────────────────────── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 2rem;
  background: rgba(5, 5, 8, 0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 2px;
}
.nav-links {
  display: flex; gap: 2rem; list-style: none;
  align-items: center;
}
.nav-links a {
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.5px;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0; height: 1px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-1);
}
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-user {
  display: flex; align-items: center; gap: 1rem;
}
.nav-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  object-fit: cover; cursor: pointer;
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span {
  width: 24px; height: 2px; background: var(--text-1);
  transition: transform var(--transition);
}

/* ── Glass panel ──────────────────────────────────────────────── */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  font-size: 0.9rem; font-weight: 500;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  color: var(--text-1);
  transition: all var(--transition);
  position: relative; overflow: hidden;
  white-space: nowrap;
}
.btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #7c74ff; border-color: #7c74ff; }
.btn-accent {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #000;
}
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: rgba(255,77,109,0.15); }
.btn-sm { padding: 0.4rem 1rem; font-size: 0.8rem; }

/* ── Form inputs ──────────────────────────────────────────────── */
.field {
  display: flex; flex-direction: column; gap: 0.4rem;
}
.field label { font-size: 0.85rem; color: var(--text-2); font-weight: 500; }
.input, .textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 0.95rem;
  transition: all var(--transition);
}
.input:focus, .textarea:focus {
  border-color: var(--accent);
  background: rgba(108,99,255,0.06);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.15);
}
.textarea { resize: vertical; min-height: 120px; font-family: inherit; }

/* ── Cards ────────────────────────────────────────────────────── */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.03), transparent);
  opacity: 0; transition: opacity var(--transition);
  pointer-events: none;
  z-index: 0;
}
.card > * { position: relative; z-index: 1; }
.card:hover { border-color: rgba(255,255,255,0.15); transform: translateY(-3px); }
.card:hover::before { opacity: 1; }

/* ── Grid layouts ─────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

/* ── Section header ───────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
  padding-top: 6rem;
}
.section-label {
  font-size: 0.75rem;
  font-family: var(--font-display);
  letter-spacing: 4px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  font-family: var(--font-display);
  line-height: 1.2;
}
.section-title .grad {
  background: linear-gradient(135deg, var(--text-1), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Tags ─────────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-2);
  transition: all var(--transition);
}
.tag:hover { border-color: var(--accent); color: var(--accent); }
.tag-active { border-color: var(--accent) !important; color: var(--accent) !important; background: rgba(108,99,255,0.1); }

/* ── Filter tabs ──────────────────────────────────────────────── */
.filters {
  display: flex; gap: 0.75rem; flex-wrap: wrap;
  justify-content: center; margin-bottom: 2rem;
}

/* ── Back button ──────────────────────────────────────────────── */
.back-btn {
  position: fixed; top: 28px; left: 24px; z-index: 200;
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(5,5,8,0.7);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text-2);
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}
.back-btn:hover { color: var(--text-1); border-color: rgba(255,255,255,0.2); }

/* ── Toast notifications ──────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 2rem; right: 2rem;
  z-index: 9999; display: flex; flex-direction: column; gap: 0.5rem;
}
.toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border-left: 3px solid var(--accent);
  backdrop-filter: blur(20px);
  font-size: 0.9rem;
  min-width: 240px;
  animation: slideIn 0.3s ease;
  box-shadow: var(--shadow);
}
.toast.success { border-color: var(--success); }
.toast.error   { border-color: var(--danger); }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0);   opacity: 1; }
}

/* ── Avatar ───────────────────────────────────────────────────── */
.avatar {
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-2);
  border: 2px solid var(--border);
  flex-shrink: 0;
}

/* ── Loading skeleton ─────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-2) 25%, var(--bg-1) 50%, var(--bg-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ── Modal ────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 5000;
  background: rgba(0,0,0,0.5); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all var(--transition);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
  width: min(90vw, 540px);
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition);
  box-shadow: var(--shadow);
}
.modal-overlay.active .modal { transform: scale(1); }
.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 28px; height: 28px;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--text-2);
  transition: all var(--transition);
}
.modal-close:hover { color: var(--text-1); border-color: rgba(255,255,255,0.2); }

/* ── Scroll progress bar ──────────────────────────────────────── */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 9999;
  height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 0%; transition: width 0.1s linear;
}

/* ── Time-Rift indicator dots ─────────────────────────────────── */
.time-rift-indicator {
  position: fixed; right: 1.5rem; top: 50%;
  transform: translateY(-50%); z-index: 500;
  display: flex; flex-direction: column; gap: 8px;
}
.rift-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-3); cursor: pointer;
  transition: all var(--transition);
}
.rift-dot.active { background: var(--accent); transform: scale(1.6); }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 1024px) { .grid-3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 768px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: var(--bg-1); padding: 1rem 2rem;
    border-bottom: 1px solid var(--border); gap: 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
}