/* css/home.css — Sprint 6.3 home redesign on Aver Design System foundation.
 *
 * Direction: light theme default, refined editorial. Plus Jakarta Sans
 * body + JetBrains Mono numerics. The skill cards are JS-rendered (see
 * js/home.js renderSkillCard) — this file styles the inner classes
 * (.head, .icon, .metric, .metric-row, .sub-metric, .footer,
 * .last-activity, .cta, .arrow, .lock-tag, .desc, .pulse) that home.js
 * writes into the .skill-card.skeleton placeholders. Don't rename those
 * inner classes here without updating home.js to match.
 *
 * Tokens: every value resolves through the shipped --av-* namespace
 * defined in /css/aver-design/tokens.css, so [data-theme="dark"] flips
 * the whole page automatically. No hardcoded colors.
 */


/* ── Reset / base ───────────────────────────────────────────────── */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--av-font-sans);
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }


/* ── Layout shell ───────────────────────────────────────────────── */

.shell {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--av-space-6) var(--av-space-8) var(--av-space-24);
}


/* Sprint 7.14 — top nav rules retired from this file. home.html now
   consumes <aver-chrome> (Sprint 7.12); chrome rules live inside the
   component's Shadow DOM. The block here previously duplicated the
   canonical chrome rules from components.css. */


/* ── Error banner ───────────────────────────────────────────────── */

.error-banner {
  background: var(--av-error-soft);
  color: var(--av-error);
  border: 1px solid var(--av-error);
  border-radius: var(--av-radius-md);
  padding: var(--av-space-3) var(--av-space-4);
  margin-bottom: var(--av-space-6);
  font-size: var(--av-fs-sm);
}
.error-banner.hidden { display: none; }


/* ── Greeting / hero ───────────────────────────────────────────── */

.greeting {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: var(--av-space-12);
  align-items: end;
  margin-bottom: var(--av-space-12);
}
.greeting .eyebrow {
  font-size: var(--av-fs-xs);
  font-weight: var(--av-fw-semibold);
  letter-spacing: var(--av-tracking-widest);
  color: var(--av-primary);
  text-transform: uppercase;
  margin: 0 0 var(--av-space-3);
}
.greeting h1 {
  font-family: var(--av-font-sans);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: var(--av-lh-tight);
  letter-spacing: var(--av-tracking-tight);
  font-weight: var(--av-fw-bold);
  color: var(--av-text-primary);
  margin: 0 0 var(--av-space-3);
}
.greeting .name { color: var(--av-primary); }
.greeting .lede {
  font-size: var(--av-fs-lg);
  color: var(--av-text-secondary);
  line-height: var(--av-lh-normal);
  max-width: 56ch;
  margin: 0;
}


/* ── Hero stats strip ──────────────────────────────────────────── */

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--av-border-default);
  border-bottom: 1px solid var(--av-border-default);
  padding: var(--av-space-6) 0;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: var(--av-space-1);
  padding: 0 var(--av-space-3);
  border-right: 1px solid var(--av-border-subtle);
}
.hero-stat:first-child { padding-left: 0; }
.hero-stat:last-child { border-right: 0; padding-right: 0; }
.hero-stat .label {
  font-size: var(--av-fs-xs);
  letter-spacing: var(--av-tracking-widest);
  text-transform: uppercase;
  color: var(--av-text-muted);
  font-weight: var(--av-fw-semibold);
}
.hero-stat .value {
  display: inline-flex;
  align-items: baseline;
  gap: var(--av-space-2);
  font-family: var(--av-font-mono);
  font-size: var(--av-fs-4xl);
  line-height: var(--av-lh-tight);
  font-weight: var(--av-fw-medium);
  color: var(--av-text-primary);
  letter-spacing: var(--av-tracking-tight);
}
.hero-stat .value .unit {
  font-family: var(--av-font-sans);
  font-size: var(--av-fs-sm);
  font-weight: var(--av-fw-regular);
  color: var(--av-text-muted);
  letter-spacing: var(--av-tracking-normal);
}
.hero-stat.streak.alive .value-num { color: var(--av-accent); }
.hero-stat.streak .flame {
  display: inline-flex;
  color: var(--av-accent);
  margin-left: var(--av-space-1);
}
.hero-stat.streak .flame svg { width: 18px; height: 18px; }
.hero-stat.streak:not(.alive) .flame { display: none; }


/* ── Section head ──────────────────────────────────────────────── */

section { margin-bottom: var(--av-space-12); }

.section-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--av-space-4);
  margin-bottom: var(--av-space-6);
}
.section-head h2 {
  font-family: var(--av-font-sans);
  font-size: var(--av-fs-2xl);
  font-weight: var(--av-fw-semibold);
  letter-spacing: var(--av-tracking-tight);
  color: var(--av-text-primary);
  margin: 0;
}
.section-head .rule {
  height: 1px;
  background: var(--av-border-subtle);
}
.section-head .meta {
  font-family: var(--av-font-mono);
  font-size: var(--av-fs-xs);
  color: var(--av-text-faint);
  letter-spacing: var(--av-tracking-wide);
  text-transform: uppercase;
}


/* ── Per-skill color identity ──────────────────────────────────── */

[data-skill="writing"]    { --skill-accent: var(--av-primary);         --skill-soft: var(--av-primary-soft);        --skill-border: var(--av-primary-border); }
[data-skill="speaking"]   { --skill-accent: var(--av-accent);        --skill-soft: var(--av-accent-soft);        --skill-border: var(--av-accent-border); }
[data-skill="grammar"]    { --skill-accent: var(--av-skill-grammar);  --skill-soft: var(--av-skill-grammar-soft); --skill-border: var(--av-skill-grammar-border); }
[data-skill="vocabulary"] { --skill-accent: var(--av-vocab-jade);     --skill-soft: var(--av-vocab-jade-soft);    --skill-border: var(--av-vocab-jade-border); }
[data-skill="reading"]    { --skill-accent: var(--av-skill-reading);  --skill-soft: var(--av-skill-reading-soft); --skill-border: var(--av-skill-reading-border); }
[data-skill="listening"]  { --skill-accent: var(--av-skill-listening); --skill-soft: var(--av-skill-listening-soft); --skill-border: var(--av-skill-listening-border); }


/* ── Skill grid + cards ────────────────────────────────────────── */

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--av-space-4);
}

.skill-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--av-space-3);
  background: var(--av-surface-card);
  border: 1px solid var(--av-border-subtle);
  border-radius: var(--av-radius-lg);
  padding: var(--av-space-6);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--av-shadow-sm);
  transition:
    transform var(--av-duration-base) var(--av-easing-default),
    border-color var(--av-duration-base) var(--av-easing-default),
    box-shadow var(--av-duration-base) var(--av-easing-default);
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--skill-accent, var(--av-primary));
  border-radius: var(--av-radius-lg) 0 0 var(--av-radius-lg);
}
.skill-card:hover {
  transform: translateY(-2px);
  border-color: var(--skill-border, var(--av-primary-border));
  box-shadow: var(--av-shadow-md);
}
.skill-card:focus-visible {
  outline: none;
  box-shadow: var(--av-shadow-focus);
}

/* Inner classes are written by js/home.js renderSkillCard. Keep these
   selectors in lockstep with the strings in that function. */

.skill-card .head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--av-space-3);
}
.skill-card .icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--av-radius-md);
  background: var(--skill-soft, var(--av-primary-soft));
  color: var(--skill-accent, var(--av-primary));
  font-size: 1.25rem;
  font-weight: var(--av-fw-medium);
  border: 1px solid var(--skill-border, var(--av-primary-border));
}
.skill-card h3 {
  font-family: var(--av-font-sans);
  font-size: var(--av-fs-xl);
  font-weight: var(--av-fw-semibold);
  letter-spacing: var(--av-tracking-tight);
  color: var(--av-text-primary);
  margin: 0;
}
.skill-card .arrow {
  font-size: 1.1rem;
  color: var(--av-text-faint);
  transition:
    color var(--av-duration-fast) var(--av-easing-default),
    transform var(--av-duration-fast) var(--av-easing-default);
}
.skill-card:hover .arrow {
  color: var(--skill-accent, var(--av-primary));
  transform: translateX(4px);
}

.skill-card .metric-row {
  display: flex;
  align-items: baseline;
  gap: var(--av-space-3);
  margin: var(--av-space-2) 0 0;
  flex-wrap: wrap;
}
.skill-card .metric {
  font-family: var(--av-font-mono);
  font-size: var(--av-fs-3xl);
  line-height: var(--av-lh-tight);
  font-weight: var(--av-fw-medium);
  color: var(--av-text-primary);
  letter-spacing: var(--av-tracking-tight);
}
.skill-card .metric .unit {
  font-family: var(--av-font-sans);
  font-size: var(--av-fs-sm);
  font-weight: var(--av-fw-regular);
  color: var(--av-text-muted);
  margin-left: var(--av-space-1);
  letter-spacing: var(--av-tracking-normal);
}

.skill-card .sub-metric {
  font-size: var(--av-fs-sm);
  color: var(--av-text-secondary);
  line-height: var(--av-lh-normal);
}
.skill-card .sub-metric .pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--av-accent);
  margin-right: var(--av-space-1);
  box-shadow: 0 0 10px color-mix(in srgb, var(--av-accent) 40%, transparent);
  animation: skill-pulse 1.6s ease-in-out infinite;
}
@keyframes skill-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(1.3); }
}

.skill-card .footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--av-space-3);
  border-top: 1px solid var(--av-border-subtle);
  padding-top: var(--av-space-3);
  margin-top: var(--av-space-3);
}
.skill-card .last-activity {
  font-size: var(--av-fs-xs);
  color: var(--av-text-faint);
  font-family: var(--av-font-mono);
  letter-spacing: var(--av-tracking-normal);
}
.skill-card .cta {
  font-size: var(--av-fs-sm);
  font-weight: var(--av-fw-semibold);
  color: var(--skill-accent, var(--av-primary));
  letter-spacing: var(--av-tracking-normal);
}

/* Coming-soon variant — dashed border, no hover lift, locked affordance. */
.skill-card.coming-soon {
  background: var(--av-surface-sunken);
  border: 1px dashed var(--av-border-default);
  cursor: default;
  box-shadow: none;
}
.skill-card.coming-soon:hover {
  transform: none;
  border-color: var(--av-border-default);
  box-shadow: none;
}
.skill-card.coming-soon .icon {
  background: var(--av-surface-sunken);
  color: var(--av-text-muted);
  border-color: var(--av-border-subtle);
}
.skill-card.coming-soon .arrow { color: var(--av-text-faint); }
.skill-card.coming-soon h3 { color: var(--av-text-secondary); }
.skill-card.coming-soon .lock-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--av-space-1) var(--av-space-3);
  border-radius: var(--av-radius-pill);
  font-size: var(--av-fs-xs);
  font-weight: var(--av-fw-semibold);
  letter-spacing: var(--av-tracking-wide);
  color: var(--av-text-muted);
  background: transparent;
  border: 1px solid var(--av-border-default);
}
.skill-card.coming-soon .desc {
  font-size: var(--av-fs-sm);
  color: var(--av-text-secondary);
  line-height: var(--av-lh-normal);
  margin: 0;
}

/* Locked variant — set by home.js when permission is missing. The
   data-locked attribute is the explicit signal; we also keep the legacy
   .skill-card-locked selector available so future co-style migrations
   can target it without renaming. */
.skill-card[data-locked="true"],
.skill-card.skill-card-locked {
  background: var(--av-surface-sunken);
  border-color: var(--av-border-subtle);
  cursor: not-allowed;
}
.skill-card[data-locked="true"] h3,
.skill-card.skill-card-locked h3 {
  color: var(--av-text-muted);
}


/* ── Skeleton loader (initial state before home.js renders) ────── */

@keyframes home-skeleton-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

.skill-card.skeleton {
  cursor: default;
  /* Keep visible chrome — empty inside means no hover lift either. */
}
.skill-card.skeleton::before {
  content: "";
  position: static; /* reset from accent-bar rule */
  display: block;
  width: 40%;
  height: 1.4rem;
  border-radius: var(--av-radius-sm);
  background: var(--av-surface-sunken);
  animation: home-skeleton-pulse 1.6s ease-in-out infinite;
}
.skill-card.skeleton::after {
  content: "";
  display: block;
  width: 30%;
  height: 2.2rem;
  border-radius: var(--av-radius-sm);
  background: var(--av-surface-sunken);
  margin-top: var(--av-space-3);
  animation: home-skeleton-pulse 1.6s ease-in-out infinite;
  animation-delay: 0.15s;
}
.skill-card.skeleton:hover {
  transform: none;
  border-color: var(--av-border-subtle);
  box-shadow: var(--av-shadow-sm);
}


/* ── Footer ────────────────────────────────────────────────────── */

.page-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--av-space-3);
  margin-top: var(--av-space-12);
  padding-top: var(--av-space-6);
  border-top: 1px solid var(--av-border-subtle);
  font-size: var(--av-fs-xs);
  color: var(--av-text-faint);
}
.aver-link {
  color: var(--av-primary);
  font-weight: var(--av-fw-semibold);
  text-decoration: none;
}
.aver-link:hover { text-decoration: underline; }
.page-footer .version {
  font-family: var(--av-font-mono);
  letter-spacing: var(--av-tracking-normal);
}


/* ── Responsive ────────────────────────────────────────────────── */

@media (max-width: 720px) {
  .shell { padding: var(--av-space-4) var(--av-space-4) var(--av-space-16); }
  .greeting {
    grid-template-columns: 1fr;
    gap: var(--av-space-6);
    align-items: stretch;
    margin-bottom: var(--av-space-8);
  }
  .greeting h1 { font-size: 2rem; }
  .greeting .lede { font-size: var(--av-fs-base); }
  .hero-stats { grid-template-columns: 1fr; padding: var(--av-space-3) 0; }
  .hero-stat {
    border-right: 0;
    border-bottom: 1px solid var(--av-border-subtle);
    padding: var(--av-space-3) 0;
  }
  .hero-stat:last-child { border-bottom: 0; }
  .hero-stat .value { font-size: var(--av-fs-3xl); }
  .skill-grid { grid-template-columns: 1fr; }
  .skill-card { padding: var(--av-space-4); }
  .skill-card .metric { font-size: var(--av-fs-2xl); }
}

@media (prefers-reduced-motion: reduce) {
  .skill-card,
  .skill-card .arrow,
  .skill-card .sub-metric .pulse,
  .skill-card.skeleton::before,
  .skill-card.skeleton::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ── Stat loading placeholder — blinking "…" until real data arrives ─────────
   Hero + skill-card numbers paint `…` (class is-loading) so a not-yet-loaded
   value reads as "loading", not a real 0. home.js (setStat / clearStatLoading)
   swaps in the value and drops the class. */
@keyframes av-stat-loading-blink {
  0%, 100% { opacity: 0.28; }
  50%      { opacity: 0.72; }
}
.value-num.is-loading,
.js-val.is-loading {
  animation: av-stat-loading-blink 1.1s ease-in-out infinite;
  color: var(--av-text-muted, currentColor);
  letter-spacing: 0.08em;
}
@media (prefers-reduced-motion: reduce) {
  .value-num.is-loading,
  .js-val.is-loading { animation: none; opacity: 0.5; }
}