:root {
  --bg: #0b1220;
  --panel: #0f1a2b;
  --card: #121f33;
  --ink: #eef2ff;
  --muted: #a7b0c0;
  --accent: #52f2f1;
  --accent-2: #ff7bd5;
  --accent-3: #ffd166;
  --border: rgba(255, 255, 255, 0.08);
  --glow: 0 0 24px rgba(82, 242, 241, 0.35);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Source Serif 4", "Noto Serif SC", "STSong", serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(82, 242, 241, 0.18), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(255, 123, 213, 0.15), transparent 60%),
    radial-gradient(1000px 800px at 50% 120%, rgba(255, 209, 102, 0.12), transparent 60%),
    linear-gradient(180deg, #0b1220 0%, #0a1324 100%);
  line-height: 1.65;
  min-height: 100vh;
}
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
body::before {
  background:
    radial-gradient(2px 2px at 10% 20%, rgba(255,255,255,0.9), transparent 40%),
    radial-gradient(1px 1px at 30% 80%, rgba(255,255,255,0.7), transparent 40%),
    radial-gradient(2px 2px at 70% 30%, rgba(255,255,255,0.8), transparent 40%),
    radial-gradient(1px 1px at 85% 60%, rgba(255,255,255,0.6), transparent 40%),
    radial-gradient(2px 2px at 50% 10%, rgba(255,255,255,0.7), transparent 40%),
    radial-gradient(1px 1px at 15% 70%, rgba(255,255,255,0.6), transparent 40%),
    radial-gradient(2px 2px at 40% 40%, rgba(255,255,255,0.8), transparent 40%),
    radial-gradient(1px 1px at 60% 75%, rgba(255,255,255,0.6), transparent 40%);
  animation: starTwinkle 6s infinite ease-in-out;
}
body::after {
  background:
    radial-gradient(1px 1px at 25% 15%, rgba(82,242,241,0.7), transparent 40%),
    radial-gradient(1px 1px at 55% 55%, rgba(255,123,213,0.6), transparent 40%),
    radial-gradient(1px 1px at 80% 20%, rgba(255,209,102,0.6), transparent 40%),
    radial-gradient(1px 1px at 20% 90%, rgba(82,242,241,0.6), transparent 40%);
  animation: starDrift 18s linear infinite;
  opacity: 0.7;
}
header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(18, 31, 51, 0.9), rgba(15, 26, 43, 0.9));
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar { display: flex; align-items: center; gap: 12px; }
.topbar-title { font-weight: 700; letter-spacing: 1px; }
.side-nav {
  position: fixed;
  top: 64px;
  left: 0;
  width: 200px;
  height: calc(100vh - 64px);
  padding: 12px;
  display: grid;
  gap: 12px;
  background: rgba(10, 18, 32, 0.85);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(8px);
  z-index: 9;
  transition: transform 180ms ease;
}
.side-nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
}
.nav-group { display: grid; gap: 6px; }
.nav-title { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin: 4px 4px 0; }
.side-nav a:hover {
  border-color: rgba(82, 242, 241, 0.45);
  box-shadow: var(--glow);
}
.side-nav.collapsed { transform: translateX(-220px); }
.container { max-width: 980px; margin: 0 auto; padding: 22px 22px 22px 240px; }
.qq-layout { display: grid; grid-template-columns: 200px 1fr 180px; gap: 14px; position: relative; z-index: 1; }
.side { display: grid; gap: 14px; align-content: start; }
.main { min-width: 0; display: grid; justify-items: center; }
.main > .card { width: min(780px, 100%); }
.focus-mode { grid-template-columns: 1fr; }
.focus-mode .side { display: none; }
.focus-mode .main { width: 100%; }
.focus-mode .main > .card { width: min(900px, 100%); }
.profile-card { text-align: center; }
.profile-card .avatar {
  width: 86px; height: 86px; margin: 6px auto 10px;
  border-radius: 50%;
  background-color: #0f1a2b;
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.25);
}
.profile-meta { display: grid; gap: 6px; justify-items: center; }
.profile-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 10px; font-size: 12px; color: var(--muted); }
.profile-stats b { display: block; color: var(--ink); font-size: 14px; }
.quick-links { display: grid; gap: 6px; }
.quick-links .btn { width: 100%; text-align: center; }
.mini-panel { padding: 12px 12px; }
.mini-panel h3 { margin: 0 0 6px; font-size: 14px; }
.mini-panel p { margin: 0; font-size: 12px; color: var(--muted); }
.wish-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.wish-list li { background: rgba(255,255,255,0.04); padding: 4px 6px; border-radius: 8px; border: 1px dashed rgba(255,255,255,0.15); font-size: 12px; color: var(--muted); }
.card {
  background: linear-gradient(180deg, rgba(18, 31, 51, 0.95), rgba(12, 21, 36, 0.95));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
  position: relative;
  overflow: hidden;
  transition: transform 220ms ease, box-shadow 220ms ease;
  animation: floatIn 520ms ease both;
}
.card::before {
  content: "";
  position: absolute;
  top: -8px; left: -8px;
  width: 60px; height: 22px;
  background: linear-gradient(90deg, #ffd166, #ff7bd5);
  opacity: 0.9;
  transform: rotate(-6deg);
  border-radius: 999px;
  filter: blur(0.2px);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 50px rgba(0,0,0,0.45);
}
.card::after {
  content: "";
  position: absolute;
  inset: -60% 40% auto -60%;
  height: 180px;
  background: radial-gradient(closest-side, rgba(82, 242, 241, 0.2), transparent);
  pointer-events: none;
}
button, .btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1220;
  border: none;
  padding: 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-weight: 700;
}
button:hover, .btn:hover { filter: brightness(1.05); box-shadow: var(--glow); }
input, textarea, select {
  width: 100%;
  padding: 10px;
  margin: 6px 0 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
}
input::placeholder, textarea::placeholder { color: var(--muted); }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
img { max-width: 100%; border-radius: 12px; }

/* Album rainbow frame */
.grid .card:has(img) {
  border: 2px solid transparent;
  background:
    linear-gradient(#0f1a2b, #0f1a2b) padding-box,
    linear-gradient(120deg, #52f2f1, #ff7bd5, #ffd166, #7cf77b) border-box;
  background-size: 100% 100%, 200% 200%;
  animation: rainbowFlow 6s linear infinite;
}

@keyframes starTwinkle {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
@keyframes starDrift {
  0% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-24px) translateX(12px); }
  100% { transform: translateY(0) translateX(0); }
}

@keyframes floatIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes rainbowFlow {
  0% { background-position: 0% 0%, 0% 50%; }
  50% { background-position: 0% 0%, 100% 50%; }
  100% { background-position: 0% 0%, 0% 50%; }
}
footer { color: var(--muted); padding: 24px 18px 32px; border-top: 1px solid var(--border); background: rgba(10, 18, 32, 0.7); }
.footer-inner { max-width: 980px; margin: 0 auto; display: grid; gap: 10px; text-align: center; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 13px; padding: 4px 8px; border-radius: 10px; background: rgba(255,255,255,0.04); border: 1px solid var(--border); }
.footer-links a:hover { color: var(--ink); border-color: rgba(255,255,255,0.2); }
.footer-meta { display: flex; flex-direction: column; gap: 4px; font-size: 12px; }
h1, h2, h3 { font-family: "ZCOOL XiaoWei", "Source Serif 4", serif; color: var(--ink); text-shadow: 0 0 16px rgba(82, 242, 241, 0.25); }
.badge { background: rgba(255, 209, 102, 0.2); color: var(--ink); padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar .btn { background: linear-gradient(135deg, #ffd166, #ff7bd5); }

@media (max-width: 720px) {
  header { padding: 10px 12px; }
  .container { padding: 16px; }
  .side-nav { width: 180px; top: 56px; height: calc(100vh - 56px); }
  .container { padding-left: 16px; }
  .card { padding: 14px; }
  .qq-layout { grid-template-columns: 1fr; }
  .side.right { order: 3; }
  .side.left { order: 1; }
  .main { order: 2; }
}