/* Trang mẹ /home — v4 (30/10/2026). Loaded after hub.css and craft.css.
   Keeps the hub layout approved 22/10; adds the light-ribbon hero, the learning desk entry,
   the study planner and readable sizes. Colours come from the active palette (--ap-*). */

/* Hero: ribbons behind the copy, one column, official slogan */
html[data-kaiopen-palette] .ko-hub #hero{
  position:relative;isolation:isolate;overflow:hidden;border-radius:28px;
  grid-template-columns:minmax(0,1fr);min-height:440px;align-items:end;
  padding:64px clamp(20px,4vw,52px) 44px;margin:8px var(--space,36px) 0;
  background:radial-gradient(120% 90% at 85% 10%,color-mix(in srgb,var(--ap-accent) 14%,transparent),transparent 60%),var(--ap-panel);
  border:1px solid var(--ap-line);
}
.ko-hub #hero .ko-ribbons{position:absolute;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none}
.ko-hub #hero::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(180deg,transparent 35%,color-mix(in srgb,var(--ap-panel) 78%,transparent) 100%)}
html[data-kaiopen-palette] .ko-hub .hero-art{display:none}
html[data-kaiopen-palette] .ko-hub .hero-meta{display:none}
html[data-kaiopen-palette] .ko-hub .hero h1{font-size:clamp(40px,5.4vw,78px);line-height:1.02;letter-spacing:-.045em;max-width:13ch;margin:0 0 20px;font-weight:700}
html[data-kaiopen-palette] .ko-hub .hero h1 em{font-style:italic;font-weight:300;color:var(--ap-accent)}
html[data-kaiopen-palette] .ko-hub .hero .lead{font-size:17px;max-width:46ch}
html[data-kaiopen-palette] .ko-hub .ctas .button{font-size:14px;min-height:46px;padding:12px 18px}
/* No colour fade on hero buttons: background and text must switch together (no dark-on-blue flash on load). */
html[data-kaiopen-motion] .ko-hub #hero .button{transition:transform .2s}

/* Stats: bigger numbers, readable captions */
html[data-kaiopen-palette] .hub-stats strong{font-size:clamp(34px,3.4vw,44px);font-weight:700;letter-spacing:-.04em}

/* Learning desk entry */
.hub-new{display:inline-block;margin-left:6px;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:.04em;background:color-mix(in srgb,var(--ap-accent) 18%,transparent);color:var(--ap-accent);vertical-align:1px}

/* Study planner */
.hub-planner{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:16px;margin-top:32px}
.hub-planner>div{background:var(--ap-panel);border:1px solid var(--ap-line);border-radius:24px;padding:26px}
.hub-planner h3{margin:0 0 18px;font-size:clamp(22px,2.2vw,30px);line-height:1.15;letter-spacing:-.03em}
.hub-planner h3 em{font-style:italic;font-weight:300;color:var(--ap-accent)}
.hub-planner label{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;font-weight:600;margin-top:14px}
.hub-planner output{font-size:26px;font-weight:700;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.hub-planner input[type=range]{width:100%;accent-color:var(--ap-accent);height:28px;margin:6px 0 0}
.hub-planner-result{display:flex;flex-direction:column;gap:10px}
.hub-planner-result span{font-size:13px;color:var(--craft-muted,var(--ap-muted));font-weight:600}
.hub-planner-result strong{font-size:clamp(48px,5vw,72px);line-height:1;font-weight:700;letter-spacing:-.05em;font-variant-numeric:tabular-nums}
.hub-planner-result small{font-size:12px;line-height:1.6;color:var(--craft-muted,var(--ap-muted))}
.hub-planner-result .button{align-self:flex-start;margin-top:auto}
.hub-beta-note{font-size:12px;color:var(--craft-muted,var(--ap-muted));margin:28px 0 0}

/* Readable minimums */
.ko-hub .id-muted,.ko-hub .id-muted *{font-size:12px}
html[data-kaiopen-palette] .ko-hub .section-heading .eyebrow{font-size:12px}

/* Phone: the six views become one scrolling row so the hero is on the first screen */
@media (max-width:700px){
  html[data-kaiopen-palette] .ko-hub #hub-sidebar{margin:10px 12px 0;padding:6px;border-radius:999px;position:sticky;top:76px;z-index:14}
  .ko-hub .hub-side-title,.ko-hub #hub-sidebar .hub-lab-link{display:none}
  html[data-kaiopen-palette] .ko-hub #hub-sidebar nav{display:flex;overflow-x:auto;gap:4px;scrollbar-width:none}
  .ko-hub #hub-sidebar nav::-webkit-scrollbar{display:none}
  html[data-kaiopen-palette] .ko-hub #hub-sidebar nav button{flex:none;min-height:40px;padding:8px 14px;font-size:13px;border-radius:999px}
  .ko-hub .hub-nav-symbol{display:none}
  html[data-kaiopen-palette] .ko-hub #hero{min-height:0;padding:40px 20px 28px;border-radius:22px;margin:10px 12px 0}
  html[data-kaiopen-palette] .ko-hub .hero h1{font-size:clamp(36px,10vw,48px)}
  html[data-kaiopen-palette] .ko-hub .hero .lead{font-size:15px}
  .hub-planner{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){.ko-hub #hero .ko-ribbons{opacity:.8}}