/* === Mei's Corner — Styles === */

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

:root {
  --bg: #0a0a0f;
  --bg-elevated: #111119;
  --fg: #e8e0d4;
  --fg-muted: #8a8494;
  --accent: #ff6b9d;
  --accent-glow: rgba(255, 107, 157, 0.3);
  --warm: #ffb347;
  --warm-glow: rgba(255, 179, 71, 0.25);
  --teal: #4ecdc4;
  --teal-glow: rgba(78, 205, 196, 0.2);
  --card: rgba(22, 22, 35, 0.85);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg);
}

body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* — Starfield Canvas — */
#starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* — Header — */
.site-header {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 5rem 1rem 2rem;
}

.glow-text {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(255, 107, 157, 0.15);
  animation: pulse-glow 4s ease-in-out infinite alternate;
}

.tagline {
  font-size: clamp(0.9rem, 2vw, 1.15rem);
  color: var(--fg-muted);
  margin-top: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* — Nav — */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1rem;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-link {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s;
  letter-spacing: 0.04em;
}
.nav-link:hover, .nav-link:focus { color: var(--accent); }

/* — Main Content — */
main {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.section {
  margin-bottom: 4rem;
}

.section h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--fg);
}

.section-intro {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  max-width: 60ch;
}

/* — Card Grid — */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  cursor: default;
  opacity: 0;
  transform: translateY(20px);
  animation: card-in 0.5s ease forwards;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}
.card-tag.research { background: var(--accent-glow); color: var(--accent); }
.card-tag.found { background: var(--warm-glow); color: var(--warm); }
.card-tag.idea { background: var(--teal-glow); color: var(--teal); }

.card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.card p {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

.card-meta {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  display: flex;
  justify-content: space-between;
}

/* — Board — */
.board {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.board-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s;
  cursor: pointer;
}
.board-item:hover { border-color: var(--warm); }

.board-item.checked {
  opacity: 0.5;
  text-decoration: line-through;
}
.board-item.checked .board-q { color: var(--fg-muted); }

.board-q {
  flex: 1;
  font-size: 0.95rem;
}

.board-star {
  font-size: 1.2rem;
  user-select: none;
  transition: transform 0.2s;
}
.board-star:hover { transform: scale(1.3); }

.board-del {
  background: none;
  border: none;
  color: var(--fg-muted);
  cursor: pointer;
  font-size: 0.8rem;
  opacity: 0;
  transition: opacity 0.2s;
}
.board-item:hover .board-del { opacity: 1; }

.add-item {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.add-item input {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
}
.add-item input:focus { border-color: var(--warm); }

/* — Button — */
.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 0.03em;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* — About — */
#about p {
  max-width: 60ch;
  margin-bottom: 1rem;
  color: var(--fg-muted);
  font-size: 0.95rem;
}
.echo {
  font-style: italic;
  color: var(--teal) !important;
  margin-top: 1.5rem !important;
  font-size: 1rem !important;
}

/* — Footer — */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.78rem;
  color: var(--fg-muted);
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
}

/* — Animations — */
@keyframes pulse-glow {
  0% { text-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(255, 107, 157, 0.1); }
  100% { text-shadow: 0 0 60px var(--accent-glow), 0 0 120px rgba(255, 107, 157, 0.2); }
}

@keyframes card-in {
  to { opacity: 1; transform: translateY(0); }
}

/* — Scrollbar — */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* — Responsive — */
@media (max-width: 600px) {
  .glow-text { font-size: 2.5rem; }
  .nav-bar { gap: 1rem; }
  .card-grid { grid-template-columns: 1fr; }
  .add-item { flex-direction: column; }
}