/* Tech stack: looping background video, overlay, gradient title, pyramid of glass tiles. */

.techstack-new {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 80px 0;
  box-sizing: border-box;
  background-color: var(--bg);
  z-index: 1;
}

.techstack-video-container {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--bg) center / cover no-repeat;
}

.techstack-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.techstack-video.is-failed { visibility: hidden; }

.techstack-overlay {
  position: absolute;
  inset: 0;
  background: #00000080;
  z-index: 1;
}

.techstack-video-container::before,
.techstack-video-container::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 150px;
  z-index: 2;
  pointer-events: none;
}

.techstack-video-container::before {
  top: 0;
  background: linear-gradient(to bottom, var(--bg) 0%, transparent 100%);
}

.techstack-video-container::after {
  bottom: 0;
  background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
}

.techstack-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.techstack-content h2 {
  font-size: 70px;
  line-height: 1.2;
  text-align: center;
  font-weight: 400;
  text-transform: uppercase;
  margin: 0 0 50px;
  background: linear-gradient(180deg, #fff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.techstack-pyramid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.techstack-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.techstack-row > li { display: flex; }

.techstack-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 55px;
  height: 68px;
  padding: 8px;
  border-radius: 10px;
  background: #ffffff08;
  border: 1px solid #ffffff1a;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.techstack-item:hover,
.techstack-item:focus-visible {
  transform: translateY(-6px) scale(1.08);
  background: #c2a4ff1a;
  border-color: var(--accent);
  box-shadow: 0 8px 30px #c2a4ff40;
  color: inherit;
}

.techstack-item img,
.techstack-mono {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
}

.techstack-item img {
  object-fit: contain;
  filter: grayscale(100%) contrast(1.2) brightness(1.5);
  opacity: 0.85;
  transition: filter 0.3s ease, opacity 0.3s ease;
}

.techstack-item:hover img,
.techstack-item:focus-visible img {
  filter: none;
  opacity: 1;
}

.techstack-mono {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: linear-gradient(140deg, #c2a4ff33, #7f40ff22);
  border: 1px solid #c2a4ff4d;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
}

/* Multi-word names ("GitHub Actions", "Claude Code") wrap at their space onto a second line;
   the tile has room for two lines at every size. */
.techstack-item .techstack-name {
  font-size: 9px;
  line-height: 1.15;
  color: #ffffffb3;
  margin-top: 5px;
  text-align: center;
  white-space: normal;
  overflow: hidden;
  text-overflow: clip;
  max-width: 50px;
}

.techstack-item:hover .techstack-name,
.techstack-item:focus-visible .techstack-name { color: #fff; }

/* Reference geometry above 900px: content-box section (100vh plus 80px above and below,
   1060px tall at 900px high) and a 1.5 line-height title with the default h2 top margin. */
@media screen and (min-width: 901px) {
  .techstack-new { box-sizing: content-box; }
  .techstack-content h2 {
    line-height: 1.5;
    margin-top: 0.83em;
  }
}

@media screen and (max-width: 1200px) {
  .techstack-content { max-width: 900px; }
  .techstack-item { width: 50px; height: 62px; }
  .techstack-item img,
  .techstack-mono { width: 26px; height: 26px; }
  .techstack-item .techstack-name { font-size: 8px; }
}

@media screen and (max-width: 900px) {
  .techstack-content h2 { font-size: 50px; margin-bottom: 35px; }
  .techstack-new { padding: 60px 0; }
  .techstack-content { padding: 0 12px; }
  .techstack-pyramid { gap: 6px; }
  .techstack-row { gap: 6px; flex-wrap: nowrap; }
}

@media screen and (max-width: 768px) {
  .techstack-content h2 { font-size: 40px; margin-bottom: 30px; }
}

@media screen and (max-width: 600px) {
  .techstack-content h2 { font-size: 32px; }
  /* 50px outer tiles: the 44px touch-target minimum with a little to spare. */
  .techstack-item {
    width: 40px;
    height: 52px;
    padding: 4px;
    border-radius: 8px;
  }
  .techstack-item img,
  .techstack-mono { width: 24px; height: 24px; }
  .techstack-mono { font-size: 9px; }
  .techstack-item .techstack-name {
    font-size: 8px;
    max-width: 42px;
    margin-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .techstack-item,
  .techstack-item img { transition: none; }
  .techstack-item:hover,
  .techstack-item:focus-visible { transform: none; }
}

html.reduced-motion .techstack-item,
html.reduced-motion .techstack-item img { transition: none; }
html.reduced-motion .techstack-item:hover,
html.reduced-motion .techstack-item:focus-visible { transform: none; }