:root {
  --bg: #0a0a12;
  --bg-card: #0f0f1a;
  --bg-card-hover: #14142a;
  --text: #c8d0e0;
  --text-muted: #6b7280;
  --accent: #4fc3f7;
  --accent-hover: #29b6f6;
  --purple: #7c4dff;
  --purple-light: #b388ff;
  --border: #1a1a2e;
  --border-hover: #2a2a4e;
  --shadow: rgba(79, 195, 247, 0.06);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', sans-serif;
  --moon-glow: rgba(79, 195, 247, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  padding-bottom: 80px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 20px 40px;
  background: linear-gradient(135deg, #0a0a1a 0%, #0f0f2a 30%, #0d0d20 60%, #0a0a12 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(79, 195, 247, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(79, 195, 247, 0.3);
  box-shadow: 0 0 40px rgba(79, 195, 247, 0.12);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-avatar:hover {
  transform: scale(1.05);
  box-shadow: 0 0 60px rgba(79, 195, 247, 0.2);
}

.hero h1 {
  font-size: 28px;
  font-weight: 600;
  background: linear-gradient(135deg, #4fc3f7, #7c4dff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  z-index: 1;
  letter-spacing: -0.5px;
}

.hero .subtitle {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 6px;
  position: relative;
  z-index: 1;
}

.hero .tagline {
  font-size: 13px;
  color: var(--accent);
  margin-top: 10px;
  position: relative;
  z-index: 1;
  opacity: 0.8;
}

/* Navigation */
.nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 16px 20px;
  background: rgba(15, 15, 26, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 20px;
  transition: all 0.2s;
}

.nav a:hover {
  color: var(--accent);
  background: rgba(79, 195, 247, 0.08);
}

.nav a.active {
  color: var(--accent);
  background: rgba(79, 195, 247, 0.1);
  border: 1px solid rgba(79, 195, 247, 0.15);
}

/* About */
.about {
  max-width: 680px;
  margin: 32px auto 0;
  padding: 0 20px;
}

.about-card {
  background: linear-gradient(135deg, #0f0f1a, #14142a);
  border-radius: 16px;
  padding: 28px 32px;
  border: 1px solid var(--border);
}

.about-card h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent);
}

.about-card p {
  font-size: 14px;
  color: #a0a8b8;
  line-height: 1.9;
  margin-bottom: 8px;
}

.about-card .emoji-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.about-card .emoji-list span {
  background: rgba(79, 195, 247, 0.06);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  border: 1px solid rgba(79, 195, 247, 0.1);
  color: var(--text-muted);
}

/* Posts */
.posts {
  max-width: 680px;
  margin: 24px auto 0;
  padding: 0 20px;
}

.posts-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.posts-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.posts-header .count {
  font-size: 13px;
  color: var(--text-muted);
}

.post-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 28px 32px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.post-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 4px 24px var(--shadow);
  transform: translateY(-1px);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--text-muted);
}

.post-category {
  background: rgba(124, 77, 255, 0.1);
  color: var(--purple-light);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
}

.post-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 14px;
  line-height: 1.4;
  color: #e0e8f0;
}

.post-content {
  font-size: 15px;
  color: #a0a8b8;
  line-height: 1.9;
}

.post-content p {
  margin-bottom: 12px;
}

.post-content p:last-child {
  margin-bottom: 0;
}

/* Footer */
.footer {
  text-align: center;
  padding: 40px 20px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer .signoff {
  font-size: 24px;
  margin-bottom: 8px;
  filter: drop-shadow(0 0 8px rgba(79, 195, 247, 0.15));
}

/* Loading */
.loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.loading .spinner {
  display: inline-block;
  animation: float 2s ease-in-out infinite;
  font-size: 28px;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

/* Empty */
.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 600px) {
  .hero { padding: 50px 16px 30px; }
  .hero h1 { font-size: 22px; }
  .hero-avatar { width: 90px; height: 90px; }
  .post-card { padding: 20px; }
  .post-title { font-size: 17px; }
  .about-card { padding: 20px; }
}