/* Frameworks, crosswalk, solutions, process chain, AI, platform foundation */

/* frameworks */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tab { min-height: 44px; padding: 0 14px; border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--surface); font-size: 14px; font-weight: 500; }
.tab:hover { border-color: var(--teal); }
.tab[aria-pressed="true"] { background: var(--teal); border-color: var(--teal); color: var(--on-teal); }
.fw-grid, .sol-grid, .mod-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
.fw { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.fw h3 { font-size: 16.5px; }
.fw .by { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); }
.fw p { font-size: 14px; color: var(--muted); }
.fw .cat { margin-top: auto; padding-top: 6px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--spark-text); }

/* crosswalk */
.cw { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; align-items: start; }
.cw-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.cw-tab { min-height: 48px; padding: 0 16px; text-align: left; border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--surface); font-size: 14.5px; font-weight: 500; }
.cw-tab:hover { border-color: var(--teal); }
.cw-tab[aria-pressed="true"] { background: var(--fg); border-color: var(--fg); color: var(--bg); }
.cw-panel { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.cw-head { padding: 16px 18px; border-bottom: 1px solid var(--line); background: var(--surface-2); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 6px; }
.cw-head h3 { font-size: 18px; }
.cw-head span { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); }
.cw-row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2px; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.cw-row:last-child { border-bottom: 0; }
.cw-row b { font-weight: 600; }
.cw-row span { color: var(--muted); }

/* solutions */
.sol { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.sol h3 { font-size: 18px; }
.sol p { font-size: 14.5px; color: var(--muted); }
.sol .mods { list-style: none; margin: auto 0 0; padding: 4px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.sol .mods li { font-family: var(--font-mono); font-size: 11.5px; padding: 3px 9px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); }

/* process chain */
.chain { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; counter-reset: step; }
.chain li { position: relative; padding-top: 26px; border-top: 2px solid var(--line-2); display: flex; flex-direction: column; gap: 8px; }
.chain li::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: -13px; left: 0; width: 24px; height: 24px; border-radius: 50%;
  background: var(--teal); color: var(--on-teal);
  font-family: var(--font-mono); font-size: 12px; display: flex; align-items: center; justify-content: center;
}
.chain h3 { font-size: 16px; }
.chain .mod-tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--spark-text); }
.chain p { font-size: 14px; color: var(--muted); }

/* AI */
.ai-cards { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
.ai-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 12px; }
.ai-card h3 { font-size: 19px; }
.ai-card p { font-size: 15px; color: var(--muted); }
.ai-card .where { margin-top: auto; padding-top: 6px; font-family: var(--font-mono); font-size: 11.5px; color: var(--spark-text); }

/* platform foundation */
.found { display: grid; grid-template-columns: minmax(0, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.found > div { padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-right: -1px; margin-bottom: -1px; display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.found h3 { font-size: 16px; }
.found p { font-size: 14px; color: var(--muted); }

@media (min-width: 560px) {
  .found { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 620px) {
  .chain { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px 16px; }
}
@media (min-width: 640px) {
  .fw-grid, .sol-grid, .mod-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
}
@media (min-width: 860px) {
  .cw { grid-template-columns: 280px minmax(0, 1fr); gap: 24px; }
  .cw-tabs { flex-direction: column; flex-wrap: nowrap; }
  .cw-row { grid-template-columns: minmax(150px, 0.8fr) minmax(0, 1.4fr); gap: 18px; padding: 14px 22px; }
  .cw-head { padding: 18px 22px; }
}
@media (min-width: 900px) {
  .ai-cards { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
  .ai-card { padding: 26px; }
}
@media (min-width: 1000px) {
  .fw-grid, .sol-grid, .mod-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .chain { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .found { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .mod-grid { gap: 22px; }
}