/* ═══════════════════════════════════════════════════════════════════════════
   CONTRIBUTIONS VISUALIZER - Complete Styling
   Four views: Classic Grid, Time Chart, 3D Grid, Geometric Grid
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────────
   CSS VARIABLES - Easy theming
   ───────────────────────────────────────────────────────────────────────────── */
:root {
  /* Contribution level colors (dark theme) */
  --level-0: #161b22;
  --level-1: #0e4429;
  --level-2: #006d32;
  --level-3: #26a641;
  --level-4: #39d353;
  
  /* UI colors */
  --viz-bg: #0d1117;
  --viz-card-bg: #161b22;
  --viz-border: #30363d;
  --viz-text: #c9d1d9;
  --viz-text-muted: #8b949e;
  --viz-accent: #58a6ff;
  
  /* Spacing */
  --viz-gap: 16px;
  --viz-padding: 20px;
  --viz-cell-size: 11px;
  --viz-cell-gap: 3px;
  --viz-radius: 8px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   MAIN CONTAINER
   ───────────────────────────────────────────────────────────────────────────── */
.visualizer-panel {
  background: var(--viz-bg);
  padding: var(--viz-padding);
  border-radius: 12px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  color: var(--viz-text);
  max-width: 1200px;
  margin: 0 auto;
}

.visualizer-panel * {
  box-sizing: border-box;
}

/* Panel header */
.viz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--viz-gap);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--viz-border);
}

.viz-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--viz-text);
  margin: 0;
}

.viz-stats {
  font-size: 13px;
  color: var(--viz-text-muted);
}

.viz-stats strong {
  color: var(--level-4);
  font-weight: 600;
}

/* ─────────────────────────────────────────────────────────────────────────────
   LAYOUT GRID
   ───────────────────────────────────────────────────────────────────────────── */
.viz-layout {
  display: grid;
  gap: var(--viz-gap);
}

/* Top row: chart full width */
.viz-chart-row {
  grid-column: 1 / -1;
}

/* Middle row: classic + 3D side by side */
.viz-grids-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--viz-gap);
}

/* Bottom row: geometric grid */
.viz-geo-row {
  grid-column: 1 / -1;
}

/* Responsive: stack on smaller screens */
@media (max-width: 900px) {
  .viz-grids-row {
    grid-template-columns: 1fr;
  }
}

/* ─────────────────────────────────────────────────────────────────────────────
   CARD COMPONENT
   ───────────────────────────────────────────────────────────────────────────── */
.viz-card {
  background: var(--viz-card-bg);
  border: 1px solid var(--viz-border);
  border-radius: var(--viz-radius);
  padding: 16px;
  overflow: hidden;
}

.viz-card-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--viz-text-muted);
  margin: 0 0 12px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.viz-card-title::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--level-3);
  border-radius: 2px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   A. CLASSIC GRID (GitHub-style)
   ───────────────────────────────────────────────────────────────────────────── */
.classic-grid-wrapper {
  overflow-x: auto;
}

.classic-grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Month labels row */
.classic-months {
  display: flex;
  font-size: 10px;
  color: var(--viz-text-muted);
  margin-bottom: 4px;
  margin-left: 28px;
}

.classic-month {
  flex: 0 0 auto;
  text-align: left;
}

/* Day labels + grid container */
.classic-grid-inner {
  display: flex;
  gap: 4px;
}

/* Day of week labels */
.classic-days {
  display: flex;
  flex-direction: column;
  gap: var(--viz-cell-gap);
  font-size: 10px;
  color: var(--viz-text-muted);
  padding-right: 4px;
}

.classic-day-label {
  height: var(--viz-cell-size);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 20px;
}

/* The actual grid of cells */
.classic-cells {
  display: grid;
  grid-template-rows: repeat(7, var(--viz-cell-size));
  grid-auto-flow: column;
  grid-auto-columns: var(--viz-cell-size);
  gap: var(--viz-cell-gap);
}

.classic-cell {
  width: var(--viz-cell-size);
  height: var(--viz-cell-size);
  border-radius: 2px;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  cursor: pointer;
}

.classic-cell:hover {
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(255,255,255,0.2);
  z-index: 10;
  position: relative;
}

/* Level colors */
.classic-cell.level-0 { background: var(--level-0); }
.classic-cell.level-1 { background: var(--level-1); }
.classic-cell.level-2 { background: var(--level-2); }
.classic-cell.level-3 { background: var(--level-3); }
.classic-cell.level-4 { background: var(--level-4); }

/* Legend */
.classic-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 8px;
  font-size: 10px;
  color: var(--viz-text-muted);
}

.classic-legend-cell {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   B. TIME-SERIES CHART
   ───────────────────────────────────────────────────────────────────────────── */
.chart-container {
  width: 100%;
  height: 120px;
  position: relative;
}

.chart-svg {
  width: 100%;
  height: 100%;
}

.chart-area {
  fill: url(#chartGradient);
  opacity: 0.3;
}

.chart-line {
  fill: none;
  stroke: var(--level-3);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-dot {
  fill: var(--level-4);
  r: 0;
  transition: r 0.15s ease;
}

.chart-dot:hover {
  r: 5;
}

.chart-axis {
  stroke: var(--viz-border);
  stroke-width: 1;
}

.chart-label {
  font-size: 9px;
  fill: var(--viz-text-muted);
}

.chart-grid-line {
  stroke: var(--viz-border);
  stroke-width: 0.5;
  stroke-dasharray: 2 4;
  opacity: 0.5;
}

/* ─────────────────────────────────────────────────────────────────────────────
   C. 3D ISOMETRIC GRID
   ───────────────────────────────────────────────────────────────────────────── */
.grid-3d-wrapper {
  perspective: 1000px;
  overflow: visible;
  padding: 20px 10px 40px 10px;
}

.grid-3d {
  display: grid;
  grid-template-columns: repeat(19, 1fr);
  gap: 2px;
  transform: rotateX(55deg) rotateZ(-45deg);
  transform-style: preserve-3d;
}

.cell-3d {
  aspect-ratio: 1;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.2s ease;
  cursor: pointer;
}

/* Top face */
.cell-3d-top {
  position: absolute;
  inset: 0;
  border-radius: 1px;
  transform: translateZ(var(--cell-height, 2px));
}

/* Front face */
.cell-3d-front {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--cell-height, 2px);
  transform: rotateX(-90deg);
  transform-origin: bottom;
  filter: brightness(0.6);
  border-radius: 0 0 1px 1px;
}

/* Right face */
.cell-3d-right {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: var(--cell-height, 2px);
  transform: rotateY(90deg);
  transform-origin: right;
  filter: brightness(0.4);
  border-radius: 0 1px 1px 0;
}

.cell-3d:hover {
  transform: translateZ(5px);
}

/* Level colors for 3D */
.cell-3d.level-0 { --cell-height: 2px; }
.cell-3d.level-1 { --cell-height: 6px; }
.cell-3d.level-2 { --cell-height: 12px; }
.cell-3d.level-3 { --cell-height: 18px; }
.cell-3d.level-4 { --cell-height: 24px; }

.cell-3d.level-0 .cell-3d-top,
.cell-3d.level-0 .cell-3d-front,
.cell-3d.level-0 .cell-3d-right { background: var(--level-0); }

.cell-3d.level-1 .cell-3d-top,
.cell-3d.level-1 .cell-3d-front,
.cell-3d.level-1 .cell-3d-right { background: var(--level-1); }

.cell-3d.level-2 .cell-3d-top,
.cell-3d.level-2 .cell-3d-front,
.cell-3d.level-2 .cell-3d-right { background: var(--level-2); }

.cell-3d.level-3 .cell-3d-top,
.cell-3d.level-3 .cell-3d-front,
.cell-3d.level-3 .cell-3d-right { background: var(--level-3); }

.cell-3d.level-4 .cell-3d-top,
.cell-3d.level-4 .cell-3d-front,
.cell-3d.level-4 .cell-3d-right { background: var(--level-4); }

/* ─────────────────────────────────────────────────────────────────────────────
   D. GEOMETRIC SPIRAL GRID
   ───────────────────────────────────────────────────────────────────────────── */
.geo-grid-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  min-height: 300px;
}

.geo-spiral {
  position: relative;
  width: 400px;
  height: 400px;
}

.geo-cell {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
}

.geo-cell:hover {
  transform: scale(1.5);
  box-shadow: 0 0 12px currentColor;
  z-index: 100;
}

.geo-cell.level-0 { background: var(--level-0); color: var(--level-0); }
.geo-cell.level-1 { background: var(--level-1); color: var(--level-1); }
.geo-cell.level-2 { background: var(--level-2); color: var(--level-2); }
.geo-cell.level-3 { background: var(--level-3); color: var(--level-3); }
.geo-cell.level-4 { background: var(--level-4); color: var(--level-4); }

/* Radial layout alternative */
.geo-radial {
  position: relative;
  width: 350px;
  height: 350px;
}

.geo-radial-cell {
  position: absolute;
  width: 8px;
  height: 20px;
  border-radius: 2px;
  transform-origin: center 175px;
  transition: filter 0.15s ease;
  cursor: pointer;
}

.geo-radial-cell:hover {
  filter: brightness(1.5);
  z-index: 100;
}

/* ─────────────────────────────────────────────────────────────────────────────
   TOOLTIP
   ───────────────────────────────────────────────────────────────────────────── */
.viz-tooltip {
  position: fixed;
  padding: 6px 10px;
  background: rgba(0, 0, 0, 0.9);
  border: 1px solid var(--viz-border);
  border-radius: 4px;
  font-size: 11px;
  color: var(--viz-text);
  pointer-events: none;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.15s ease;
  white-space: nowrap;
}

.viz-tooltip.visible {
  opacity: 1;
}

.viz-tooltip strong {
  color: var(--level-4);
}

/* ─────────────────────────────────────────────────────────────────────────────
   RESPONSIVE ADJUSTMENTS
   ───────────────────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .visualizer-panel {
    padding: 12px;
  }
  
  :root {
    --viz-cell-size: 9px;
    --viz-cell-gap: 2px;
  }
  
  .geo-spiral,
  .geo-radial {
    width: 280px;
    height: 280px;
  }
  
  .geo-radial-cell {
    transform-origin: center 140px;
  }
}