/* ===== SNOWARE Unified Dark Theme ===== */

:root {
  --bg-deep: #060612;
  --bg-card: rgba(15, 25, 55, 0.6);
  --bg-glass: rgba(20, 35, 70, 0.35);
  --accent: #4fc3f7;
  --accent-alt: #7c4dff;
  --text: #e8eaf6;
  --text-muted: #90a4ae;
  --radius: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* ===== Navigation ===== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 6, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(79, 195, 247, 0.1);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
}
.nav-logo { border-radius: 50%; }
.nav-links { display: flex; gap: 20px; }
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after { width: 100%; }

/* ===== Homepage ===== */
#star-canvas-wrap {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
#star-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.home-overlay {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
}
.logo-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
}
.logo-wrap::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,195,247,0.25), transparent 70%);
}
.home-logo {
  border-radius: 50%;
  border: 2px solid rgba(79,195,247,0.5);
  background: rgba(15,25,55,0.6);
  backdrop-filter: blur(8px);
}
.home-title {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 8px;
  color: var(--accent);
  text-shadow: 0 0 30px rgba(79,195,247,0.4), 0 0 60px rgba(79,195,247,0.2);
  margin-bottom: 32px;
}
.home-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.home-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  background: var(--bg-glass);
  border: 1px solid rgba(79,195,247,0.3);
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}
.home-btn:hover {
  background: rgba(79,195,247,0.15);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(79,195,247,0.2);
}

/* ===== Page Hero ===== */
.page-hero {
  text-align: center;
  padding: 80px 24px 40px;
  background: linear-gradient(180deg, rgba(6,6,18,0) 0%, rgba(6,6,18,1) 100%);
}
.page-hero h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 0 20px color-mix(in srgb, var(--accent) 30%, transparent);
  margin-bottom: 8px;
}
.page-hero .subtitle {
  color: var(--text-muted);
  font-size: 18px;
}

/* ===== Page Content ===== */
.page-content { padding: 20px 24px 60px; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a2e;
  border-color: var(--accent);
}
.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-accent {
  background: color-mix(in srgb, var(--accent) 20%, var(--bg-card));
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}
.btn-accent:hover { background: color-mix(in srgb, var(--accent) 30%, var(--bg-card)); }
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border-color: rgba(144,164,174,0.3);
}
.btn-outline:hover { border-color: var(--text-muted); color: var(--text); }
.btn-lg { padding: 14px 32px; font-size: 17px; }

/* ===== Glass Cards ===== */
.feature-card {
  background: var(--bg-glass);
  border: 1px solid rgba(79,195,247,0.1);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: border-color var(--transition);
}
.feature-card:hover { border-color: rgba(79,195,247,0.3); }
.feature-card h3 { color: var(--accent); margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 14px; }
.feature-icon { font-size: 32px; margin-bottom: 12px; }

/* ===== Resources Section ===== */
.res-intro {
  text-align: center;
  margin-bottom: 32px;
}
.res-intro-text { color: var(--text); font-size: 16px; }
.res-intro-note { color: var(--text-muted); font-size: 14px; margin-top: 8px; }
.res-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.res-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

/* ===== File List ===== */
.filelist-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.subject-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 20px;
  background: var(--bg-glass);
  border: 1px solid color-mix(in srgb, var(--color) 25%, transparent);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}
.subject-card:hover {
  border-color: var(--color);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--color) 15%, transparent);
}
.subject-icon { color: var(--color); }
.subject-card h3 { font-size: 18px; }
.subject-pw { font-size: 13px; color: var(--text-muted); }
.subject-pw code {
  background: rgba(255,255,255,0.08);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--color);
}

/* ===== Software Section ===== */
.about-intro {
  text-align: center;
  margin-bottom: 40px;
  padding: 24px;
  background: var(--bg-glass);
  border-radius: var(--radius);
}
.about-intro p { color: var(--text-muted); margin-bottom: 16px; }
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  background: var(--bg-glass);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px color-mix(in srgb, var(--accent) 12%, transparent);
}
.card-header { display: flex; justify-content: space-between; align-items: flex-start; }
.card-header h3 { font-size: 20px; color: var(--accent); }
.card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 50px;
  background: color-mix(in srgb, var(--accent) 15%, var(--bg-card));
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.card-desc { color: var(--text-muted); font-size: 14px; }
.card-links { margin-top: auto; }
.card-link { font-size: 14px; color: var(--accent); }

/* ===== Software Detail ===== */
.sw-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.sw-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.sw-section {
  margin-bottom: 32px;
  padding: 24px;
  background: var(--bg-glass);
  border-radius: var(--radius);
}
.sw-section h2 {
  color: var(--accent);
  margin-bottom: 12px;
  font-size: 22px;
}
.sw-code {
  background: rgba(255,255,255,0.06);
  padding: 12px 18px;
  border-radius: 8px;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 14px;
  overflow-x: auto;
}
.usage-list { display: flex; flex-direction: column; gap: 12px; }
.usage-item {
  display: flex;
  gap: 12px;
  align-items: center;
}
.usage-item code {
  background: rgba(255,255,255,0.06);
  padding: 6px 12px;
  border-radius: 6px;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 13px;
  white-space: nowrap;
}
.usage-item span { color: var(--text-muted); }

/* ===== Drag Ball ===== */
.drag-ball-area {
  text-align: center;
  padding: 24px;
  margin: 40px 0;
  background: var(--bg-glass);
  border-radius: var(--radius);
}
.drag-hint { color: var(--text-muted); font-size: 14px; margin-top: 8px; }

/* ===== XAGuarder ===== */
.xag-intro {
  text-align: center;
  padding: 40px;
  background: var(--bg-glass);
  border-radius: var(--radius);
  max-width: 600px;
  margin: 0 auto;
}
.xag-logo { border-radius: 50%; margin-bottom: 16px; }
.xag-intro h2 { margin-bottom: 16px; color: var(--accent); }
.xag-intro p { color: var(--text-muted); margin-bottom: 20px; }

/* ===== Warning Page ===== */
.warning-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.warning-content {
  text-align: center;
  padding: 60px;
  background: rgba(244,67,54,0.08);
  border: 2px solid rgba(244,67,54,0.3);
  border-radius: var(--radius);
  max-width: 500px;
}
.warning-logo { border-radius: 50%; margin-bottom: 20px; }
.warning-content h1 { color: #f44336; font-size: 28px; margin-bottom: 16px; }
.warning-text { font-size: 18px; color: var(--text); margin-bottom: 8px; }
.warning-sub { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }

/* ===== Error Page ===== */
.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.error-content { text-align: center; }
.error-logo { border-radius: 50%; margin-bottom: 20px; }
.error-content h1 { font-size: 72px; color: var(--accent); margin-bottom: 12px; }
.error-content p { color: var(--text-muted); }
.error-hint { font-size: 14px; margin-bottom: 24px; }

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 24px;
  border-top: 1px solid rgba(79,195,247,0.08);
  color: var(--text-muted);
  font-size: 13px;
  margin-top: auto;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-inner { flex-direction: column; gap: 12px; }
  .nav-links { gap: 12px; }
  .home-title { font-size: 32px; letter-spacing: 4px; }
  .home-logo { width: 140px; height: 140px; }
  .home-nav { gap: 10px; }
  .home-btn { padding: 10px 22px; font-size: 14px; }
  .page-hero h1 { font-size: 28px; }
  .project-grid { grid-template-columns: 1fr; }
  .filelist-grid { grid-template-columns: repeat(2, 1fr); }
  .res-features, .sw-features { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .filelist-grid { grid-template-columns: 1fr; }
  .res-features, .sw-features { grid-template-columns: 1fr; }
  .sw-links { flex-direction: column; align-items: center; }
}