/* ══════════════════════════════════════
   about.css — 關於工作室頁面專屬樣式
══════════════════════════════════════ */

/* ── Page Hero (shared across inner pages) ── */
.page-hero {
  padding-top: 64px;
  background: var(--ink);
  position: relative;
  overflow: hidden;
  padding-bottom: 72px;
}
.page-hero .hero-orb--1 {
  width: 360px; height: 360px;
  top: -80px; right: -60px;
  background: radial-gradient(circle, rgba(255,107,53,0.18) 0%, transparent 70%);
}
.page-hero .container { position: relative; z-index: 1; padding-top: 40px; }
.ph-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 24px;
}
.ph-breadcrumb a { color: var(--text-3); transition: color 0.2s; }
.ph-breadcrumb a:hover { color: var(--accent); }
.ph-title {
  font-family: var(--ff-serif);
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  margin-top: 8px;
}
.ph-sub {
  font-size: 16px;
  color: var(--text-2);
  max-width: 580px;
  line-height: 1.8;
}

/* ── Intro Section ── */
.about-intro-section { background: var(--surface); }
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-intro-text p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 16px;
  line-height: 1.85;
}
.about-intro-text strong { color: var(--text-1); }
.about-intro-text em { color: var(--accent); font-style: normal; }
.about-intro-text .section-title { margin-bottom: 24px; }

.about-values { display: flex; flex-direction: column; gap: 16px; }
.value-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color 0.25s;
}
.value-card:hover { border-color: rgba(255,107,53,0.3); }
.value-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.value-card strong { display: block; font-size: 14px; color: var(--text-1); margin-bottom: 4px; }
.value-card p { font-size: 13px; color: var(--text-3); line-height: 1.65; margin: 0; }

/* ── Tech Stack Section ── */
.stack-section { background: var(--ink); }
.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.stack-group {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.stack-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.stack-group-icon { font-size: 22px; }
.stack-group h3 {
  font-family: var(--ff-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-1);
}
.skill-list { display: flex; flex-direction: column; gap: 14px; }
.skill-item {
  display: grid;
  grid-template-columns: 140px 1fr 44px;
  align-items: center;
  gap: 10px;
}
.skill-name { font-size: 13px; color: var(--text-2); }
.skill-bar {
  height: 5px;
  background: var(--line);
  border-radius: 100px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 100px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.skill-fill.animated { /* triggered by JS */ }
.skill-pct {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--text-3);
  text-align: right;
}

/* ── Timeline Section ── */
.timeline-section { background: var(--surface); }
.timeline {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2), transparent);
}
.tl-item {
  position: relative;
  padding: 0 0 44px 40px;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute;
  left: -5px; top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  box-shadow: 0 0 0 3px rgba(255,107,53,0.25);
}
.tl-year {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.tl-card {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  position: relative;
}
.tl-card h4 {
  font-family: var(--ff-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}
.tl-card p { font-size: 13.5px; color: var(--text-2); line-height: 1.7; margin-bottom: 12px; }
.tl-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tl-tags span {
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 100px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--line);
  color: var(--text-3);
}
.tl-card--current {
  border-color: rgba(255,107,53,0.35);
  background: rgba(255,107,53,0.05);
}
.tl-current-badge {
  position: absolute;
  top: -10px; right: 16px;
  background: var(--accent);
  color: #fff;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 2px 10px;
  border-radius: 100px;
}

/* ── CTA ── */
.about-cta-section {
  background: var(--ink);
  padding: 96px 0;
  border-top: 1px solid var(--line);
}
.about-cta-inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.about-cta-inner h2 {
  font-family: var(--ff-serif);
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 900;
  color: var(--text-1);
  margin: 10px 0 16px;
  line-height: 1.3;
}
.about-cta-inner p { font-size: 15px; color: var(--text-2); margin-bottom: 32px; }
.about-cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Responsive ── */
@media (max-width: 860px) {
  .about-intro-grid { grid-template-columns: 1fr; gap: 36px; }
  .stack-grid { grid-template-columns: 1fr; }
  .skill-item { grid-template-columns: 120px 1fr 40px; }
}
@media (max-width: 640px) {
  .page-hero { padding-bottom: 48px; }
  .page-hero .container { padding-top: 24px; }
  .ph-title { font-size: 26px; }
  .ph-sub { font-size: 14px; max-width: 100%; }
  .ph-breadcrumb { font-size: 10px; margin-bottom: 16px; }
  .skill-item { grid-template-columns: 1fr; gap: 6px; }
  .skill-pct { display: none; }
  .timeline { padding-left: 20px; }
  .tl-item { padding-left: 28px; }
  .about-cta-section { padding: 48px 0; }
  .about-cta-inner h2 { font-size: clamp(22px, 6vw, 28px); }
  .about-cta-inner p { font-size: 14px; }
}
@media (max-width: 480px) {
  .ph-title { font-size: 22px; }
  .page-hero { padding: 56px 0 36px; }
  .ph-breadcrumb { margin-bottom: 12px; }
  .value-card { flex-direction: column; gap: 8px; padding: 14px 16px; }
  .about-cta-btns { flex-direction: column; align-items: stretch; }
  .about-cta-btns .btn { justify-content: center; }
  .ph-sub { font-size: 13px; }
}
@media (max-width: 380px) {
  .about-cta-section { padding: 32px 0; }
  .about-cta-inner h2 { font-size: 20px; }
}