/* ═══════════════════════════════════════════════════
   STAKARTS JOURNAL — ARTICLE DETAIL PAGE STYLES
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&display=swap');

:root {
  --art-glow: rgba(212,175,55,0.2);
  --art-accent: #D4AF37;
  --stats-bg: rgba(0, 0, 0, 0.02);
  --glass-bg: rgba(0, 0, 0, 0.015);
  --glass-border: rgba(0, 0, 0, 0.05);
  --glass-bg-hover: rgba(0, 0, 0, 0.03);
  --glass-border-hover: rgba(0, 0, 0, 0.09);
}

.dark-mode {
  --stats-bg: rgba(8, 8, 8, 0.4);
  --glass-bg: rgba(255, 255, 255, 0.01);
  --glass-border: rgba(255, 255, 255, 0.035);
  --glass-bg-hover: rgba(255, 255, 255, 0.03);
  --glass-border-hover: rgba(255, 255, 255, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-font-smoothing: antialiased; }
html { scroll-behavior: smooth; background: var(--bg-color); font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
body { background: var(--bg-color); color: var(--text-primary); overflow-x: hidden; transition: background-color 0.6s ease, color 0.6s ease; }

/* ── Keyframes ─────────────────────────── */
@keyframes artReveal {
  from { opacity: 0; transform: translateY(28px); filter: blur(12px); }
  to   { opacity: 1; transform: translateY(0);    filter: blur(0);    }
}
@keyframes countUp { from { opacity:0; transform:scale(0.85); } to { opacity:1; transform:scale(1); } }
@keyframes fadeSlideUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }

/* ── Article Hero ──────────────────────── */
.art-hero {
  min-height: 82vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 160px 32px 80px;
  background: var(--bg-color);
  position: relative;
  overflow: hidden;
}

.art-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--art-glow);
  pointer-events: none;
}

.art-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 180px;
  background: linear-gradient(to bottom, transparent, var(--bg-color));
  pointer-events: none;
}

.art-hero-inner {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.art-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #D4AF37;
  margin-bottom: 24px;
  opacity: 0;
  animation: artReveal 0.9s cubic-bezier(0.16,1,0.3,1) 0.1s forwards;
}

.art-eyebrow::before, .art-eyebrow::after {
  content: '';
  width: 24px; height: 1px;
  background: rgba(212,175,55,0.4);
}

.art-title {
  font-size: clamp(36px, 5.5vw, 76px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 70%, var(--art-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 28px;
  opacity: 0;
  animation: artReveal 1.1s cubic-bezier(0.16,1,0.3,1) 0.25s forwards;
}

.art-intro {
  font-size: 19px;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.72;
  margin-bottom: 40px;
  opacity: 0;
  animation: artReveal 1.1s cubic-bezier(0.16,1,0.3,1) 0.4s forwards;
}

.art-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0;
  animation: artReveal 0.9s cubic-bezier(0.16,1,0.3,1) 0.55s forwards;
}

.art-meta-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--border-color); }

/* ── Cover Visual ──────────────────────── */
.art-cover-wrap {
  max-width: 1240px;
  margin: 0 auto 0;
  padding: 0 32px;
}

.art-cover-visual {
  width: 100%;
  height: 520px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.art-cover-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 24px;
}

.art-cover-bg-text {
  position: absolute;
  font-size: clamp(80px, 12vw, 180px);
  font-weight: 700;
  letter-spacing: -0.06em;
  color: var(--text-primary);
  opacity: 0.03;
  user-select: none;
  pointer-events: none;
  text-align: center;
}

/* ── Apple-Style Stats ─────────────────── */
.art-stats {
  padding: 80px 32px;
  background: var(--stats-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-top: 0;
  transition: background-color 0.6s ease, border-color 0.6s ease;
}

.art-stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.art-stat {
  text-align: center;
  padding: 36px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  position: relative;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              background 0.3s ease, 
              border-color 0.3s ease;
}

.art-stat:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-4px);
}

.art-stat.in-view { opacity: 1; transform: translateY(0); }

.art-stat-num {
  display: block;
  font-size: clamp(48px, 6.5vw, 84px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--art-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  font-family: 'Geist', -apple-system, sans-serif;
}

.art-stat-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.art-stat-sub {
  display: block;
  font-size: 12px;
  color: #8E8E93;
  font-weight: 300;
  line-height: 1.4;
}

/* ── Article Body ──────────────────────── */
.art-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 88px 32px 100px;
}

.art-body h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin: 64px 0 18px;
  line-height: 1.18;
}

.art-body h3 {
  font-size: 21px;
  font-weight: 500;
  color: var(--text-primary);
  margin: 40px 0 12px;
  letter-spacing: -0.02em;
}

.art-body p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.82;
  margin-bottom: 22px;
  font-weight: 300;
}

.art-body strong { color: var(--text-primary); font-weight: 500; }
.art-body em { color: var(--text-secondary); font-style: italic; }

.art-body ul {
  list-style: none;
  margin: 24px 0;
}

.art-body ul li {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.7;
  padding: 12px 0 12px 28px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.art-body ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--art-accent);
  opacity: 0.7;
}

/* ── Pull Quote ────────────────────────── */
.art-pullquote {
  margin: 56px 0;
  padding: 44px 40px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--art-accent);
  border-radius: 20px;
}

.art-pullquote blockquote {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  font-style: italic;
  margin-bottom: 18px;
}

.art-pullquote cite {
  font-size: 12px;
  color: var(--art-accent);
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Principles Grid ───────────────────── */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 36px 0;
}

.principle-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 22px 20px;
  transition: border-color 0.3s ease;
}

.principle-card:hover { border-color: rgba(212,175,55,0.25); }

.principle-num {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--art-accent);
  margin-bottom: 8px;
  display: block;
}

.principle-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.principle-desc {
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.6;
}

/* ── Wide Visual Section ───────────────── */
.art-wide-visual {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 32px;
}

.art-visual-block {
  border-radius: 20px;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.art-visual-caption {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 14px;
  font-style: italic;
}

/* ── Tags ──────────────────────────────── */
.art-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.art-tag {
  padding: 5px 13px;
  border-radius: 100px;
  font-size: 11.5px;
  font-weight: 400;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: border-color 0.2s, color 0.2s;
}

.art-tag:hover { color: var(--text-primary); border-color: var(--text-secondary); }

/* ── Article Nav ───────────────────────── */
.art-nav-bar {
  background: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 40px 32px;
}

.art-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.art-nav-back {
  font-size: 14px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s, gap 0.2s;
}

.art-nav-back:hover { color: var(--text-primary); gap: 12px; }

.art-nav-label {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Gradient Backgrounds ──────────────── */
.g-ph { background: radial-gradient(ellipse at 30% 40%, rgba(147,51,234,0.1) 0%, transparent 60%), linear-gradient(150deg, #F3E8FF 0%, var(--bg-color) 100%); }
.g-ic { background: radial-gradient(ellipse at 65% 30%, rgba(234,179,8,0.08) 0%, transparent 60%), linear-gradient(150deg, #FEF9C3 0%, var(--bg-color) 100%); }
.g-br { background: radial-gradient(ellipse at 40% 60%, rgba(14,165,233,0.08) 0%, transparent 60%), linear-gradient(150deg, #E0F2FE 0%, var(--bg-color) 100%); }
.g-pr { background: radial-gradient(ellipse at 55% 35%, rgba(239,68,68,0.08) 0%, transparent 60%), linear-gradient(150deg, #FEE2E2 0%, var(--bg-color) 100%); }
.g-mt { background: radial-gradient(ellipse at 35% 55%, rgba(34,197,94,0.08) 0%, transparent 60%), linear-gradient(150deg, #DCFCE7 0%, var(--bg-color) 100%); }
.g-vi { background: radial-gradient(ellipse at 60% 35%, rgba(99,102,241,0.1) 0%, transparent 60%), linear-gradient(150deg, #E0E7FF 0%, var(--bg-color) 100%); }
.g-hi { background: radial-gradient(ellipse at 45% 50%, rgba(217,119,6,0.1) 0%, transparent 60%), linear-gradient(150deg, #FFEDD5 0%, var(--bg-color) 100%); }
.g-tc { background: radial-gradient(ellipse at 55% 40%, rgba(6,182,212,0.08) 0%, transparent 60%), linear-gradient(150deg, #ECFEFF 0%, var(--bg-color) 100%); }

.dark-mode .g-ph { background: radial-gradient(ellipse at 30% 40%, rgba(147,51,234,0.2) 0%, transparent 60%), linear-gradient(150deg, #100720 0%, #060309 100%); }
.dark-mode .g-ic { background: radial-gradient(ellipse at 65% 30%, rgba(234,179,8,0.18) 0%, transparent 60%), linear-gradient(150deg, #170f00 0%, #090600 100%); }
.dark-mode .g-br { background: radial-gradient(ellipse at 40% 60%, rgba(14,165,233,0.15) 0%, transparent 60%), linear-gradient(150deg, #020d1a 0%, #010609 100%); }
.dark-mode .g-pr { background: radial-gradient(ellipse at 55% 35%, rgba(239,68,68,0.16) 0%, transparent 60%), linear-gradient(150deg, #160202 0%, #090101 100%); }
.dark-mode .g-mt { background: radial-gradient(ellipse at 35% 55%, rgba(34,197,94,0.14) 0%, transparent 60%), linear-gradient(150deg, #021108 0%, #010702 100%); }
.dark-mode .g-vi { background: radial-gradient(ellipse at 60% 35%, rgba(99,102,241,0.2) 0%, transparent 60%), linear-gradient(150deg, #060616 0%, #03030b 100%); }
.dark-mode .g-hi { background: radial-gradient(ellipse at 45% 50%, rgba(217,119,6,0.2) 0%, transparent 60%), linear-gradient(150deg, #130900 0%, #090500 100%); }
.dark-mode .g-tc { background: radial-gradient(ellipse at 55% 40%, rgba(6,182,212,0.16) 0%, transparent 60%), linear-gradient(150deg, #02100f 0%, #010908 100%); }

/* ── Responsive ────────────────────────── */
@media (max-width: 900px) {
  .art-stats-inner { grid-template-columns: 1fr; }
  .art-stat + .art-stat::before { display: none; }
  .principles-grid { grid-template-columns: 1fr; }
  .art-cover-visual { height: 340px; }
}

@media (max-width: 600px) {
  .art-hero { padding: 130px 20px 60px; }
  .art-body { padding: 60px 20px 80px; }
  .art-pullquote { padding: 28px 24px; }
}

/* ── IntersectionObserver targets ─────── */
.reveal { opacity:0; transform:translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in-view { opacity:1; transform:translateY(0); }