/* ========== Reset & Base ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root{
  /* Heatmap sizing (JS will override on small screens) */
  --contrib-cell: 12px;
  --contrib-gap: 3px;
  --contrib-radius: 2px;

  /* Dark theme defaults */
  --contrib-c-0: #161b22;
  --contrib-c-1: #0e4429;
  --contrib-c-2: #006d32;
  --contrib-c-3: #26a641;
  --contrib-c-4: #39d353;

  --contrib-text: #e6edf3;
  --contrib-muted: #9ea7b3;
  --contrib-bg: #0d1117;
  --contrib-border: #30363d;

  --contrib-tooltip-bg: rgba(0,0,0,0.9);
  --contrib-tooltip-text: #fff;

  --content-max: 1100px;
  --content-pad: clamp(1rem, 2.5vw, 2rem);
}

@media (prefers-color-scheme: light){
  :root{
    --contrib-c-0: #ebedf0;
    --contrib-c-1: #9be9a8;
    --contrib-c-2: #40c463;
    --contrib-c-3: #30a14e;
    --contrib-c-4: #216e39;

    --contrib-text: #24292f;
    --contrib-muted: #57606a;
    --contrib-bg: #ffffff;
    --contrib-border: #d0d7de;

    --contrib-tooltip-bg: rgba(0,0,0,0.85);
    --contrib-tooltip-text: #fff;
  }
}

html, body { height: 100%; }

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background-color: #121212;
  color: #eee;
  line-height: 1.6;
  overflow-x: hidden;
}

.section-pad { padding-inline: var(--content-pad); }

/* ========== Parallax Header ========== */
.parallax {
  position: relative;
  min-height: 60vh;
  height: 100vh;
  background: url("images/parallax-bg.jpg") no-repeat center / cover;
  background-attachment: scroll; /* avoid ghosting */
  display: grid;
  place-items: center;
  overflow: hidden;
}
.parallax .overlay {
  text-align: center;
  color: white;
  background: color-mix(in srgb, #000 40%, transparent);
  padding: clamp(1rem, 2vw, 2rem);
  border-radius: 12px;
  max-width: min(90%, 900px);
}
.parallax h1 { font-size: clamp(1.8rem, 4.5vw, 3rem); line-height: 1.2; }
.parallax p { font-size: clamp(1rem, 2.5vw, 1.2rem); margin-top: 0.5rem; opacity: 0.9; }

/* ========== Main Layout ========== */
main { margin-inline: auto; max-width: var(--content-max); padding-block: 2rem; }
section { margin-bottom: 3rem; }
h2 {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  margin-bottom: 0.75rem;
  border-bottom: 2px solid #444;
  padding-bottom: 0.5rem;
}

/* ========== Project Cards & Scroller ========== */
.projects-container { position: relative; padding-block: 0.5rem; }
.projects-scroll {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5rem 0;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}
.project {
  flex: 0 0 clamp(92%, 70vw, 80%);
  scroll-snap-align: start;
  margin-bottom: 0.5rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: #1e1e1e;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  transition: transform 0.3s ease;
}
.project:hover { transform: translateY(-2px); }
.project video {
  inline-size: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  margin-block: 0.75rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}
.project a { display: inline-block; margin-top: 0.25rem; color: #ffd700; text-decoration: none; font-weight: 700; }
.project a:hover { color: #ffa500; }

.scroll-btn {
  position: absolute; top: 50%; translate: 0 -50%;
  background: rgba(0,0,0,0.6); border: none; color: #fff;
  font-size: 1.75rem; cursor: pointer; padding: 0.75rem; border-radius: 999px;
  z-index: 10; transition: background 0.2s ease; min-width: 44px; min-height: 44px;
}
.scroll-btn:hover { background: rgba(0,0,0,0.9); }
.scroll-btn.left { left: 0.5rem; }
.scroll-btn.right { right: 0.5rem; }
@media (max-width: 380px){ .scroll-btn { display: none; } }

/* ========== Contributions Heatmap ========== */
.contrib-wrap {
  color: var(--contrib-text);
  background: #1b1f24;
  border: 1px solid var(--contrib-border);
  border-radius: 12px;
  padding: clamp(0.75rem, 2.5vw, 1rem);
}
.contrib-wrap.compact .contrib-months { display: none; } /* ultra-compact */

.contrib-header{
  display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
  margin-bottom: 10px;
}
.contrib-title{ font-weight:600; }
.contrib-count{ color: var(--contrib-muted); font-size: 0.9rem; }

.contrib-graph{
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 12px;
  align-items: start;
  overflow-x: auto; /* still scrollable if needed */
  padding-bottom: 0.25rem;
}

.contrib-ylabels{
  display: grid;
  grid-auto-rows: calc(var(--contrib-cell) + var(--contrib-gap));
  gap: var(--contrib-gap);
  padding-top: 20px; /* space for month labels */
}
.contrib-y{
  font-size: 12px;
  color: var(--contrib-muted);
  height: var(--contrib-cell);
  line-height: var(--contrib-cell);
}
/* Show Sun/Tue/Thu only (GitHub-ish) */
.contrib-y:nth-child(odd){ visibility: hidden; }

.contrib-grid{
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min-content;
  gap: var(--contrib-gap);
}

.contrib-months{
  position: absolute;
  left: 0; right: 0; height: 16px; top: 0;
  display: flex;
  pointer-events: none;
}
.contrib-month-label{
  position: absolute;
  top: -4px;
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--contrib-muted);
  white-space: nowrap;
}

.contrib-week{
  display: grid;
  grid-auto-rows: var(--contrib-cell);
  gap: var(--contrib-gap);
  padding-top: 20px; /* room for months */
}

.contrib-day{
  width: var(--contrib-cell);
  height: var(--contrib-cell);
  border-radius: var(--contrib-radius);
  background: var(--contrib-c-0);
  outline: 1px solid rgba(0,0,0,0.03);
}

.contrib-legend{
  display:flex; align-items:center; gap:8px; margin-top:10px; color: var(--contrib-muted); font-size:12px;
}
.contrib-swatch{
  width: var(--contrib-cell);
  height: var(--contrib-cell);
  border-radius: var(--contrib-radius);
  outline: 1px solid rgba(0,0,0,0.05);
}
.contrib-swatch[data-l="0"]{ background: var(--contrib-c-0); }
.contrib-swatch[data-l="1"]{ background: var(--contrib-c-1); }
.contrib-swatch[data-l="2"]{ background: var(--contrib-c-2); }
.contrib-swatch[data-l="3"]{ background: var(--contrib-c-3); }
.contrib-swatch[data-l="4"]{ background: var(--contrib-c-4); }

.contrib-tooltip{
  position: fixed; z-index: 999;
  background: var(--contrib-tooltip-bg); color: var(--contrib-tooltip-text);
  font-size: 12px; padding: 6px 8px; border-radius: 6px; pointer-events: none;
  opacity: 0; transform: translate(-50%, -120%); transition: opacity 100ms ease; white-space: nowrap;
}
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0;
}

.contrib-error{
  border:1px solid var(--contrib-border);
  background: color-mix(in srgb, var(--contrib-bg) 80%, #f00 20%);
  padding: 12px; border-radius: 8px; margin-top: 12px;
  color: var(--contrib-text); font-size: 14px;
}

/* Default phone shrink (JS will fine-tune) */
@media (max-width: 640px){
  :root{ --contrib-cell: 9px; --contrib-gap: 2px; }
  .contrib-ylabels { display: none; } /* save space on phones */
}