/**
 * Copyright (c) 2026 KDTech
 * Author: david@KDTech
 * All rights reserved.
 *
 * Tilefold website — content sections
 *
 * The feature bento grid (cursor spotlight plus a small looping visual per
 * card). The card base defined here is reused by the privacy section in
 * closing.css.
 */

/* ---------- Bento ---------- */

.bento {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.card {
  --x: 50%;
  --y: 50%;
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-2xl);
  background: linear-gradient(180deg, rgb(255 255 255 / 0.035), rgb(255 255 255 / 0.01));
  box-shadow: var(--highlight);
}

/* Spotlight that follows the cursor (pointer-fx sets --x / --y). */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
    520px circle at var(--x) var(--y),
    rgb(124 92 255 / 0.13),
    transparent 45%
  );
  opacity: 0;
  transition: opacity 400ms;
}

/* Aurora rim lit only near the cursor. */
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(
    320px circle at var(--x) var(--y),
    rgb(34 211 238 / 0.7),
    rgb(124 92 255 / 0.4) 40%,
    transparent 70%
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 400ms;
  pointer-events: none;
}

.card:hover::before,
.card:hover::after {
  opacity: 1;
}

.card.span-4 {
  grid-column: span 4;
}

.card.span-3 {
  grid-column: span 3;
}

.card.span-2 {
  grid-column: span 2;
}

.card h3 {
  margin: auto 0 0;
  padding-block-start: 24px;
  font-size: 21px;
  letter-spacing: -0.02em;
  font-weight: 620;
}

.card p {
  margin: 8px 0 0;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.55;
}

.viz {
  position: relative;
  flex: 1;
  min-height: 130px;
}

/* Blocks viz: three mini Blocks, the last one running. */
.viz-blocks {
  display: grid;
  gap: 8px;
  align-content: start;
  font-family: var(--font-mono);
  font-size: 12px;
}

.mini-block {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  padding-inline-start: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(255 255 255 / 0.025);
  color: var(--text-2);
}

.mini-block::before {
  content: "";
  position: absolute;
  inset-block: 7px;
  inset-inline-start: 7px;
  width: 3px;
  border-radius: 3px;
  background: var(--ok);
}

.mini-block.run::before {
  background: linear-gradient(180deg, var(--violet), var(--cyan), var(--amber), var(--violet));
  background-size: 100% 300%;
  animation: shimmer 1.6s linear infinite;
}

.mini-block.err::before {
  background: var(--err);
}

.mini-block em {
  margin-inline-start: auto;
  color: var(--text-3);
  font-style: normal;
  font-size: 11px;
}

/* Composer viz: an editor with a completion popover. */
.viz-composer {
  padding: 14px 16px;
  border: 1px solid rgb(124 92 255 / 0.4);
  border-radius: 12px;
  background: rgb(255 255 255 / 0.02);
  box-shadow: 0 0 0 4px rgb(124 92 255 / 0.08);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-1);
}

.viz-composer .ln {
  display: block;
  white-space: pre;
}

.viz-composer .ln i {
  color: var(--text-3);
  font-style: normal;
}

.completion {
  position: absolute;
  inset-inline-start: 46%;
  top: 64px;
  min-width: 170px;
  padding: 5px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--ink-4);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-mono);
  font-size: 12px;
  animation: pop 4s var(--ease-out) infinite;
}

.completion div {
  padding: 5px 8px;
  border-radius: 6px;
  color: var(--text-2);
}

.completion div:first-child {
  background: rgb(124 92 255 / 0.25);
  color: var(--text-1);
}

@keyframes pop {
  0%,
  12% {
    opacity: 0;
    transform: translateY(4px) scale(0.97);
  }
  20%,
  80% {
    opacity: 1;
    transform: none;
  }
  90%,
  100% {
    opacity: 0;
  }
}

/* Shared-memory viz: three panes feeding one memory node. */
.viz-memory svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.viz-memory .flow {
  stroke-dasharray: 4 7;
  animation: flow 1.4s linear infinite;
}

@keyframes flow {
  to {
    stroke-dashoffset: -22;
  }
}

.viz-memory .node {
  animation: node-glow 2.4s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

@keyframes node-glow {
  50% {
    transform: scale(1.08);
    filter: drop-shadow(0 0 12px rgb(34 211 238 / 0.8));
  }
}

/* Palette viz: giant keycaps. */
.viz-keys {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.keycap {
  display: grid;
  place-items: center;
  width: 84px;
  height: 84px;
  border: 1px solid var(--line-strong);
  border-block-end-width: 5px;
  border-radius: 18px;
  background: linear-gradient(180deg, var(--ink-4), var(--ink-3));
  color: var(--text-1);
  font-size: 34px;
  font-weight: 500;
  box-shadow: 0 18px 30px -12px rgb(0 0 0 / 0.6);
  animation: press 3.2s var(--ease-out) infinite;
}

.keycap + .keycap {
  animation-delay: 0.12s;
}

@keyframes press {
  0%,
  70%,
  100% {
    transform: none;
    border-block-end-width: 5px;
  }
  76% {
    transform: translateY(3px);
    border-block-end-width: 2px;
    box-shadow: 0 0 34px -4px rgb(124 92 255 / 0.7);
  }
}

/* Panes viz: a split layout that re-tiles itself. */
.viz-panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 8px;
  height: 140px;
  animation: retile 9s var(--ease-emph) infinite;
}

.viz-panes span {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(255 255 255 / 0.03);
}

.viz-panes span:first-child {
  grid-row: span 2;
  background: var(--aurora-soft);
  border-color: rgb(124 92 255 / 0.4);
}

@keyframes retile {
  0%,
  28% {
    grid-template-columns: 1fr 1fr;
  }
  36%,
  62% {
    grid-template-columns: 2fr 1fr;
  }
  70%,
  100% {
    grid-template-columns: 1fr 2fr;
  }
}

/* Updates viz: a ring that fills and ticks. */
.viz-update {
  display: grid;
  place-items: center;
}

.viz-update svg {
  width: 130px;
  height: 130px;
}

.viz-update .ring {
  stroke-dasharray: 302;
  stroke-dashoffset: 302;
  animation: ring 4s var(--ease-out) infinite;
}

@keyframes ring {
  70%,
  100% {
    stroke-dashoffset: 0;
  }
}

/* Languages viz: greetings that cycle. */
.viz-langs {
  display: grid;
  place-items: center;
  overflow: hidden;
  font-size: 42px;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.viz-langs span {
  grid-area: 1 / 1;
  opacity: 0;
  animation: greet 16s infinite;
  animation-delay: calc(var(--g) * 2s);
}

@keyframes greet {
  0% {
    opacity: 0;
    transform: translateY(24px);
    filter: blur(8px);
  }
  3%,
  10% {
    opacity: 1;
    transform: none;
    filter: none;
  }
  13%,
  100% {
    opacity: 0;
    transform: translateY(-24px);
    filter: blur(8px);
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 1020px) {
  .bento {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card.span-4,
  .card.span-3,
  .card.span-2 {
    grid-column: span 1;
  }

  .card.wide-md {
    grid-column: span 2;
  }
}

@media (max-width: 620px) {
  .bento {
    grid-template-columns: minmax(0, 1fr);
  }

  .card.wide-md {
    grid-column: span 1;
  }
}