/* ============================================
   Brain Trinity — Brand Design System
   Palette: Purple #6B3FA0 · Cyan #4DD0E1 · Pink #E040FB
   Dark base: #1A1A2E / #232042 / #311B92
   Rule: one working accent per section —
   cyan = facts/labels/UI, pink = emotion/CTA only
   ============================================ */

:root {
  --primary: #6B3FA0;
  --secondary: #4DD0E1;
  --accent: #E040FB;

  --bg-base: #1A1A2E;
  --bg-alt: #232042;
  --bg-deep: #311B92;

  --text-primary: #FFFFFF;
  --text-body: #F5F5F5;
  --text-caption: #BDBDBD;

  --surface: rgba(255, 255, 255, 0.06);
  --surface-hover: rgba(255, 255, 255, 0.10);
  --divider: rgba(255, 255, 255, 0.10);

  --gradient-brand: linear-gradient(135deg, #311B92 0%, #6B3FA0 50%, #E040FB 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg-base);
  color: var(--text-body);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  min-height: 100dvh;
}

/* 시그니처 그라디언트 바 — 모든 페이지 상단 */
.brand-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-brand);
  z-index: 10;
}

/* 배경 뉴럴 글로우 */
.glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 70% -10%, rgba(107, 63, 160, 0.35), transparent 70%),
    radial-gradient(ellipse 40% 30% at 10% 10%, rgba(77, 208, 225, 0.08), transparent 70%);
}

.wrap {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 104px 24px 48px;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ---------- Hero ---------- */

.hero { margin-bottom: 56px; }

.avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  margin-bottom: 28px;
  border: 2px solid var(--divider);
  display: block;
}

.eyebrow {
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--secondary);
  font-weight: 700;
  margin-bottom: 18px;
}

h1 {
  font-size: clamp(32px, 6.5vw, 48px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 22px;
}

/* 키 프레이즈 — 브랜드 그라디언트 텍스트 */
.grad {
  background: linear-gradient(120deg, #9C6BDF 0%, #E040FB 55%, #4DD0E1 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.lede {
  font-size: 17px;
  color: var(--text-caption);
}

/* ---------- Trinity 모티프 ---------- */

.trinity {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 36px 0 0;
}

.trinity .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.trinity .dot:nth-child(1) { background: var(--primary); box-shadow: 0 0 12px rgba(107, 63, 160, 0.8); }
.trinity .dot:nth-child(3) { background: var(--secondary); box-shadow: 0 0 12px rgba(77, 208, 225, 0.6); }
.trinity .dot:nth-child(5) { background: var(--accent); box-shadow: 0 0 12px rgba(224, 64, 251, 0.6); }

.trinity .line {
  width: 44px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.25), rgba(255,255,255,0.08));
}

/* ---------- Cards ---------- */

.cards { display: grid; gap: 12px; }

.card {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 22px 26px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 16px;
  text-decoration: none;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.card:hover {
  border-color: rgba(77, 208, 225, 0.55);
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.card-title {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 17px;
  min-width: 96px;
}

.card-desc {
  color: var(--text-caption);
  font-size: 15px;
  flex: 1;
}

.card-arrow {
  color: var(--secondary);
  font-size: 15px;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.card:hover .card-arrow { opacity: 1; transform: translateX(0); }

/* 준비 중 미니 태그 — 핑크는 여기 하나만 */
.tag-soon {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid rgba(224, 64, 251, 0.45);
  border-radius: 999px;
  padding: 2px 10px;
  white-space: nowrap;
}

/* ---------- Podcast 페이지 ---------- */

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-primary);
  background: var(--gradient-brand);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 26px;
}

.principles {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.principle {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 14px;
}

.principle .no {
  color: var(--secondary);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.06em;
}

.principle p { color: var(--text-body); font-size: 15px; }

/* ---------- Footer ---------- */

.foot {
  margin-top: auto;
  padding-top: 72px;
  font-size: 13px;
  color: var(--text-caption);
}

.foot .handle {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 600;
}

.foot .handle:hover { text-decoration: underline; }

.back {
  display: inline-block;
  color: var(--text-caption);
  text-decoration: none;
  font-size: 15px;
}

.back:hover { color: var(--text-primary); }

.m-only { display: none; }

@media (max-width: 520px) {
  .wrap { padding-top: 80px; }
  .card { flex-wrap: wrap; row-gap: 6px; }
  .m-only { display: inline; }
}