:root {
  --bg-void: #0a0a0f;
  --bg-deep: #0d0d14;
  --bg-card: #12121c;
  --bg-card-hover: #181825;
  --bg-surface: #1a1a28;
  --border-subtle: #1e1e30;
  --border-glow: #2a2a45;
  --text-primary: #e0dfe6;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --neon-violet: #a855f7;
  --neon-violet-dim: rgba(168, 85, 247, 0.3);
  --neon-cyan: #22d3ee;
  --neon-cyan-dim: rgba(34, 211, 238, 0.2);
  --neon-red: #ef4444;
  --neon-red-dim: rgba(239, 68, 68, 0.2);
  --neon-pink: #ec4899;
  --neon-green: #22c55e;
  --accent: var(--neon-violet);
  --accent-dim: var(--neon-violet-dim);
  --font-main: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-display: 'Playfair Display', serif;
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

::selection {
  background: var(--neon-violet-dim);
  color: var(--neon-violet);
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--border-glow);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-violet);
}

a {
  color: var(--neon-violet);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--neon-cyan);
  text-shadow: 0 0 10px var(--neon-cyan-dim);
}

#particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.03;
  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='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: 0.1em;
}

.logo:hover {
  color: var(--neon-violet);
  text-shadow: 0 0 20px var(--neon-violet-dim);
  text-decoration: none;
}

.logo-glyph {
  font-size: 1.5rem;
  color: var(--neon-violet);
  filter: drop-shadow(0 0 8px var(--neon-violet-dim));
  animation: glyph-pulse 3s ease-in-out infinite;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  padding: 0.4rem 0;
  position: relative;
  text-decoration: none;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--neon-violet);
  transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--neon-violet);
}

.nav-link:hover {
  color: var(--text-primary);
  text-shadow: none;
}

.btn-write {
  background: var(--accent-dim);
  color: var(--neon-violet) !important;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-sm);
  border: 1px solid var(--neon-violet-dim);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-write:hover {
  background: var(--neon-violet);
  color: white !important;
  box-shadow: 0 0 20px var(--neon-violet-dim);
}

.btn-write::after {
  display: none;
}

.btn-logout {
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted) !important;
  padding: 0.4rem 0.8rem !important;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-logout::after {
  display: none;
}

.btn-logout:hover {
  border-color: var(--neon-red);
  color: var(--neon-red) !important;
  background: var(--neon-red-dim);
}

.btn-icon {
  font-size: 0.9rem;
}

.main-content {
  position: relative;
  z-index: 2;
  padding: 6rem 2rem 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.hero {
  text-align: center;
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.hero-glitch {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 0.75rem;
  letter-spacing: 0.02em;
}

.hero-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-violet), transparent);
  margin: 1.5rem auto 0;
  animation: line-glow 3s ease-in-out infinite;
}

.filter-bar {
  margin-bottom: 2rem;
}

.search-input {
  width: 100%;
  padding: 0.8rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.search-input:focus {
  border-color: var(--neon-violet);
  box-shadow: 0 0 20px var(--neon-violet-dim);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.tag-filter {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.tag-filter:hover, .tag-filter.active {
  border-color: var(--neon-violet);
  color: var(--neon-violet);
  background: var(--neon-violet-dim);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.post-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, transparent, var(--neon-violet-dim), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: var(--transition);
}

.post-card:hover::before {
  opacity: 1;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 40px var(--neon-violet-dim);
}

.post-card-cover {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-subtle);
}

.post-card-body {
  padding: 1.2rem;
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.post-card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0.5rem 0;
  line-height: 1.3;
  color: var(--text-primary);
}

.post-card-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  border-top: 1px solid var(--border-subtle);
}

.post-card-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  background: var(--neon-violet-dim);
  color: var(--neon-violet);
  border-radius: 10px;
}

.post-card-mood {
  font-size: 0.75rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  text-decoration: none;
}

.back-link:hover {
  color: var(--neon-violet);
  text-shadow: none;
}

.post-view {
  max-width: 700px;
  margin: 0 auto;
}

.post-header {
  margin-bottom: 2rem;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.mood-label {
  color: var(--neon-cyan);
}

.post-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.post-cover {
  margin-bottom: 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.post-cover img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}

.post-body {
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-body h1, .post-body h2, .post-body h3 {
  font-family: var(--font-display);
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

.post-body h1 { font-size: 2rem; }
.post-body h2 { font-size: 1.5rem; }
.post-body h3 { font-size: 1.2rem; }

.post-body p {
  margin-bottom: 1.2rem;
}

.post-body blockquote {
  border-left: 3px solid var(--neon-violet);
  padding: 0.8rem 1.2rem;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-body code {
  font-family: var(--font-mono);
  background: var(--bg-surface);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--neon-cyan);
}

.post-body pre {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 1.5rem 0;
  overflow-x: auto;
}

.post-body pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

.post-body img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1rem 0;
}

.post-body a {
  color: var(--neon-cyan);
  border-bottom: 1px solid var(--neon-cyan-dim);
}

.post-body a:hover {
  border-bottom-color: var(--neon-cyan);
}

.post-body ul, .post-body ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.post-body li {
  margin-bottom: 0.3rem;
}

.post-footer {
  display: flex;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.btn {
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--neon-violet);
  color: white;
}

.btn-primary:hover {
  box-shadow: 0 0 25px var(--neon-violet-dim);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
}

.btn-edit, .btn-delete {
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-edit:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.btn-delete:hover {
  border-color: var(--neon-red);
  color: var(--neon-red);
  background: var(--neon-red-dim);
}

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem;
  color: var(--text-muted);
}

.loading-orb {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--neon-violet), transparent);
  animation: orb-pulse 1.5s ease-in-out infinite;
  margin-bottom: 1rem;
}

.empty-state {
  text-align: center;
  padding: 5rem 2rem;
  color: var(--text-muted);
}

.empty-glyph {
  font-size: 4rem;
  color: var(--neon-violet-dim);
  margin-bottom: 1rem;
  animation: glyph-pulse 3s ease-in-out infinite;
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.music-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: none;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1.5rem;
  background: rgba(13, 13, 20, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
}

.music-player.active {
  display: flex;
}

.yt-player-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  top: -9999px;
  left: -9999px;
}

.player-yt-thumb {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background-size: cover;
  background-position: center;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.player-info {
  min-width: 150px;
}

.player-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-primary);
  display: block;
}

.player-artist {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.player-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.3rem;
  transition: var(--transition);
}

.player-btn:hover {
  color: var(--neon-violet);
}

.player-btn-main {
  font-size: 1.3rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-glow);
  border-radius: 50%;
}

.player-btn-main:hover {
  border-color: var(--neon-violet);
  box-shadow: 0 0 15px var(--neon-violet-dim);
}

.player-progress {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--bg-surface);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--neon-violet);
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px var(--neon-violet-dim);
}

.player-time {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  min-width: 80px;
  text-align: right;
}

.player-volume {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.volume-icon {
  font-size: 0.9rem;
}

.volume-slider {
  width: 80px;
  height: 4px;
  -webkit-appearance: none;
  background: var(--bg-surface);
  border-radius: 2px;
  outline: none;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--neon-violet);
  cursor: pointer;
  box-shadow: 0 0 8px var(--neon-violet-dim);
}

.player-close {
  font-size: 0.8rem !important;
  opacity: 0.5;
}

.player-close:hover {
  opacity: 1;
  color: var(--neon-red) !important;
}

@media (max-width: 768px) {
  .navbar {
    padding: 0.6rem 1rem;
  }

  .logo-text {
    font-size: 0.9rem;
  }

  .logo-glyph {
    font-size: 1.2rem;
  }

  .nav-links {
    gap: 0.6rem;
  }

  .nav-link {
    font-size: 0.75rem;
    padding: 0.3rem 0;
  }

  .btn-write {
    padding: 0.4rem 0.7rem !important;
    font-size: 0.75rem;
  }

  .btn-icon {
    display: none;
  }

  .main-content {
    padding: 5rem 1rem 2rem;
  }

  .posts-grid {
    grid-template-columns: 1fr;
  }

  .music-player {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
  }

  .player-volume {
    display: none;
  }

  .post-card-title {
    font-size: 1.05rem;
  }

  .post-card-excerpt {
    -webkit-line-clamp: 2;
  }

  .hero {
    padding: 2rem 0;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }
}