/* ============================================
   THEME VARIABLES
   ============================================ */

:root[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --text-tertiary: #707070;
  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --border: #333333;
  --highlight: #ffaa00;
  --terminal-bg: #0d1117;
  --terminal-text: #58a6ff;
}

:root[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e5e5e5;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-tertiary: #8a8a8a;
  --accent: #00aa66;
  --accent-dim: #008855;
  --border: #d0d0d0;
  --highlight: #ff8800;
  --terminal-bg: #f0f6fc;
  --terminal-text: #0969da;
}

/* ============================================
   BASE STYLES
   ============================================ */

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

body {
  font-family: 'Courier New', 'Monaco', 'Menlo', monospace;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* ============================================
   HEADER
   ============================================ */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.ascii-logo {
  font-size: 0.5rem;
  line-height: 1.2;
  color: var(--accent);
  margin: 0;
  white-space: pre;
  font-family: monospace;
}

.header-info {
  flex: 1;
  min-width: 200px;
}

.header-info h1 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.bio {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.theme-toggle {
  background: var(--bg-tertiary);
  border: 2px solid var(--border);
  color: var(--text-primary);
  width: 48px;
  height: 48px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.5rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--accent);
  color: var(--bg-primary);
  transform: rotate(180deg);
}

/* ============================================
   SECTIONS
   ============================================ */

section {
  margin-bottom: 3rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-header h2 {
  font-size: 1.2rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.bracket {
  color: var(--text-tertiary);
}

.last-updated {
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

/* ============================================
   STATS GRID
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  padding: 1.5rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.stat-card.primary {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.stat-card.highlight {
  border-color: var(--highlight);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.arrow {
  color: var(--accent);
  font-size: 0.7rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.stat-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================
   RECENT ACTIVITY
   ============================================ */

.activity-list {
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.activity-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-item:hover {
  background: var(--bg-tertiary);
}

.activity-date {
  color: var(--accent);
  font-weight: bold;
  min-width: 120px;
}

.activity-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.activity-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.activity-stat-label {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.activity-stat-value {
  color: var(--text-primary);
  font-weight: bold;
}

.loading {
  padding: 2rem;
  text-align: center;
  color: var(--text-tertiary);
}

/* ============================================
   ACTIVITY HEATMAP
   ============================================ */

.heatmap-section {
  margin-bottom: 3rem;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.legend-items {
  display: flex;
  gap: 0.25rem;
}

.legend-box {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid var(--border);
}

.legend-box.level-0 {
  background: var(--bg-secondary);
}

.legend-box.level-1 {
  background: color-mix(in srgb, var(--accent) 20%, var(--bg-secondary));
}

.legend-box.level-2 {
  background: color-mix(in srgb, var(--accent) 40%, var(--bg-secondary));
}

.legend-box.level-3 {
  background: color-mix(in srgb, var(--accent) 60%, var(--bg-secondary));
}

.legend-box.level-4 {
  background: var(--accent);
}

.heatmap-container {
  position: relative;
  overflow-x: auto;
  padding: 1rem 0;
}

.heatmap-months {
  display: flex;
  gap: 0;
  margin-bottom: 0.5rem;
  margin-left: 30px;
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

.heatmap-month {
  width: calc(12px + 3px);
  flex-shrink: 0;
}

.heatmap-grid {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  grid-auto-flow: column;
  grid-auto-columns: 12px;
  gap: 3px;
  margin-left: 30px;
}

.heatmap-day-labels {
  position: absolute;
  left: 0;
  top: 50px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

.heatmap-day-label {
  height: 12px;
  line-height: 12px;
}

.heatmap-cell {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.heatmap-cell:hover {
  transform: scale(1.3);
  z-index: 10;
  border-color: var(--accent);
}

.heatmap-cell.level-0 {
  background: var(--bg-secondary);
}

.heatmap-cell.level-1 {
  background: color-mix(in srgb, var(--accent) 20%, var(--bg-secondary));
}

.heatmap-cell.level-2 {
  background: color-mix(in srgb, var(--accent) 40%, var(--bg-secondary));
}

.heatmap-cell.level-3 {
  background: color-mix(in srgb, var(--accent) 60%, var(--bg-secondary));
}

.heatmap-cell.level-4 {
  background: var(--accent);
}

.heatmap-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  padding: 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 100;
  margin-bottom: 5px;
}

.heatmap-cell:hover .heatmap-tooltip {
  opacity: 1;
}

/* ============================================
   TERMINAL BOX
   ============================================ */

.terminal-box {
  background: var(--terminal-bg);
  border: 2px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.terminal-header {
  background: var(--bg-tertiary);
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--border);
}

.terminal-title {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.terminal-buttons {
  display: flex;
  gap: 0.5rem;
}

.btn-close,
.btn-minimize,
.btn-maximize {
  font-size: 0.6rem;
  color: var(--text-tertiary);
}

.terminal-body {
  padding: 1.5rem;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

.terminal-line {
  margin-bottom: 0.75rem;
}

.terminal-line:last-child {
  margin-bottom: 0;
}

.prompt {
  color: var(--accent);
  margin-right: 0.5rem;
}

.command {
  color: var(--terminal-text);
}

.upload-note {
  padding: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.upload-note code {
  background: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 2px;
  font-family: 'Courier New', monospace;
  color: var(--accent);
}

/* ============================================
   SOCIAL LINKS
   ============================================ */

.social-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  border-color: var(--accent);
  background: var(--bg-tertiary);
  transform: translateX(4px);
}

.social-icon {
  color: var(--accent);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  margin-top: 4rem;
  padding-top: 2rem;
}

.ascii-divider {
  color: var(--border);
  font-size: 0.8rem;
  text-align: center;
  margin-bottom: 1rem;
  overflow: hidden;
  white-space: nowrap;
}

.footer-text {
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

.footer-text a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-text a:hover {
  color: var(--accent-dim);
  text-decoration: underline;
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

  header {
    gap: 1rem;
  }

  .ascii-logo {
    font-size: 0.35rem;
  }

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

  .activity-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .activity-stats {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .ascii-logo {
    display: none;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .heatmap-legend {
    font-size: 0.65rem;
  }

  .legend-box {
    width: 10px;
    height: 10px;
  }

  .heatmap-cell {
    width: 10px;
    height: 10px;
  }

  .heatmap-day-label {
    height: 10px;
    line-height: 10px;
    font-size: 0.65rem;
  }
}