/* ═══════════════════════════════════════════════════════════
   이루리 v6 — 과목별 페이지 공통 스타일
   8 페이지 공유 (korean·math·english·science·society·inmoon·surisuri·consulting)
═══════════════════════════════════════════════════════════ */

@import url('../build/tokens.css');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.css');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img { max-width: 100%; height: auto; display: block; }
svg { display: inline-block; vertical-align: middle; }
a svg, button svg { flex-shrink: 0; }
svg:not([width]):not([height]) { width: 16px; height: 16px; } /* 안전망 */
a { color: inherit; }
button { font: inherit; cursor: pointer; border: 0; background: none; }
:focus-visible { outline: 2px solid var(--iruri-base-gold-classic); outline-offset: 2px; }

body {
  background: #0f1218;
  color: rgba(255, 255, 255, 0.88);
  font-family: 'Pretendard Variable', Pretendard, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

:root {
  --iruri-bg: #0f1218;
  --iruri-bg-alt: #131820;
  --iruri-bg-card: rgba(255, 255, 255, 0.02);
  --iruri-border: rgba(255, 255, 255, 0.06);
  --iruri-border-strong: rgba(255, 255, 255, 0.12);
  --iruri-text: rgba(255, 255, 255, 0.92);
  --iruri-text-mute: rgba(255, 255, 255, 0.72);
  --iruri-text-dim: rgba(255, 255, 255, 0.60);
  --iruri-gold: #c5a572;
  --iruri-gold-light: #e6c370;
  --course-accent: #c5a572; /* page-specific override */
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ─── Nav (sticky, 홈 동일) ─── */
.site-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(15, 18, 24, 0.85); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--iruri-border); }
.site-nav__inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; gap: 24px; }
.site-nav__logo { display:flex; align-items:center; gap:9px; text-decoration:none; }
.site-nav__logo img { height:30px; width:auto; }
.site-nav__logo span { font-weight:800; font-size:17px; color:#fff; letter-spacing:-0.02em; }
.site-nav__menu { display: flex; gap: 36px; flex: 1; justify-content: center; }
.site-nav__menu a { color: rgba(255,255,255,0.75); font-size: 14px; font-weight: 500; text-decoration: none; transition: color 0.15s; }
.site-nav__menu a:hover { color: #fff; }
.site-nav__menu a.active { color: var(--course-accent); }
.site-nav__cta { background: linear-gradient(135deg, #c5a572, #e6c370); color: #0f1218; padding: 10px 22px; border-radius: 999px; font-size: 14px; font-weight: 700; text-decoration: none; transition: transform 0.15s; display: inline-flex; align-items: center; gap: 8px; }
.site-nav__cta:hover { transform: translateY(-1px); }
.site-nav__cta svg { width: 16px; height: 16px; }

/* ─── Breadcrumb ─── */
.breadcrumb { padding: 100px 0 24px; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: rgba(255,255,255,0.65); letter-spacing: 0.15em; }
.breadcrumb a { color: var(--iruri-gold); text-decoration: underline; text-underline-offset: 3px; }
.breadcrumb a:hover { color: var(--iruri-gold-light); }
.breadcrumb span { color: #ffffff; font-weight: 600; }

/* ─── Course Hero ─── */
.course-hero { padding: 24px 0 96px; position: relative; overflow: hidden; }
.course-hero::before { content: ''; position: absolute; top: 0; right: -20%; width: 60%; height: 100%; background: radial-gradient(circle, rgba(197,165,114,0.06) 0%, transparent 70%); pointer-events: none; z-index: 0; }
.course-hero__inner { position: relative; z-index: 1; max-width: 880px; }
.course-hero__tag { display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 12px; font-weight: 700; background: var(--course-tag-bg); color: var(--course-accent); margin-bottom: 32px; letter-spacing: -0.01em; }
.course-hero__title { font-weight: 800; font-size: clamp(40px, 6vw, 72px); line-height: 1.1; letter-spacing: -0.03em; color: #fff; margin-bottom: 24px; }
.course-hero__title em { font-style: normal; color: var(--course-accent); }
.course-hero__lede { font-size: 18px; color: var(--iruri-text-mute); line-height: 1.6; margin-bottom: 40px; max-width: 640px; }
.course-hero__meta { display: flex; gap: 32px; flex-wrap: wrap; padding: 24px 0; border-top: 1px solid var(--iruri-border); border-bottom: 1px solid var(--iruri-border); }
.course-hero__meta-item { font-size: 13px; }
.course-hero__meta-label { color: var(--iruri-text-dim); display: block; margin-bottom: 4px; font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.1em; }
.course-hero__meta-value { color: #fff; font-weight: 600; }

/* ─── Section common ─── */
.section { padding: 96px 0; }
.section--alt { background: var(--iruri-bg-alt); }
.section--bordered { border-top: 1px solid var(--iruri-border); border-bottom: 1px solid var(--iruri-border); }
.section__head { margin-bottom: 56px; }
.section__head--center { text-align: center; }
.section__eyebrow { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--course-accent); letter-spacing: 0.25em; font-weight: 600; margin-bottom: 16px; }
.section__title { font-weight: 800; font-size: 36px; line-height: 1.2; letter-spacing: -0.025em; color: #fff; margin-bottom: 16px; }
.section__title em { font-style: normal; color: var(--course-accent); }
.section__lede { font-size: 16px; color: var(--iruri-text-mute); line-height: 1.65; max-width: 640px; }
.section__head--center .section__lede { margin-left: auto; margin-right: auto; }

/* ─── Problems list (학부모 고민) ─── */
.problems { margin-bottom: 56px; }
.problems__list { display: grid; gap: 12px; max-width: 720px; }
.problems__item { background: var(--iruri-bg-card); border: 1px solid var(--iruri-border); border-left: 3px solid var(--course-accent); border-radius: 4px; padding: 18px 24px; }
.problems__quote { font-size: 15px; color: var(--iruri-text); line-height: 1.55; }
.problems__answer { font-size: 13px; color: var(--course-accent); margin-top: 8px; font-weight: 600; }
.problems__answer::before { content: '→ '; }

/* ─── Solution cards (4 유형 grid) ─── */
.solutions__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.solution-card { background: var(--iruri-bg-card); border: 1px solid var(--iruri-border); border-radius: 12px; padding: 32px; transition: border-color 0.2s ease, transform 0.2s ease; }
.solution-card:hover { border-color: var(--course-accent); transform: translateY(-3px); }
.solution-card__num { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--course-accent); letter-spacing: 0.2em; margin-bottom: 16px; font-weight: 700; }
.solution-card__title { font-weight: 800; font-size: 20px; color: #fff; margin-bottom: 12px; letter-spacing: -0.02em; line-height: 1.35; }
.solution-card__desc { font-size: 14px; color: var(--iruri-text-mute); line-height: 1.65; }

/* ─── Steps (4단계 시스템) ─── */
.steps__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.step-card { background: var(--iruri-bg); border: 1px solid var(--iruri-border); border-radius: 12px; padding: 28px; position: relative; counter-increment: step; }
.step-card__num { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--course-accent); letter-spacing: 0.2em; margin-bottom: 12px; }
.step-card__num::before { content: 'STEP ' counter(step, decimal-leading-zero); }
.step-card__title { font-weight: 700; font-size: 16px; color: #fff; margin-bottom: 8px; letter-spacing: -0.01em; }
.step-card__desc { font-size: 13px; color: var(--iruri-text-mute); line-height: 1.6; }

/* ─── Why card (차별점 강조) ─── */
.why-card { background: linear-gradient(135deg, var(--course-tag-bg) 0%, transparent 100%); border: 1px solid var(--course-accent); border-radius: 12px; padding: 48px; }
.why-card__title { font-weight: 800; font-size: 24px; color: #fff; margin-bottom: 16px; letter-spacing: -0.02em; line-height: 1.4; }
.why-card__title em { font-style: normal; color: var(--course-accent); }
.why-card__lede { font-size: 15px; color: var(--iruri-text-mute); line-height: 1.7; }

/* ─── 4-axis matrix (DEPTH/PACE/RANGE/COACHING for science) ─── */
.axes__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.axis-card { background: var(--iruri-bg); border: 1px solid var(--iruri-border); border-radius: 12px; padding: 32px; }
.axis-card__label { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--course-accent); letter-spacing: 0.25em; margin-bottom: 12px; font-weight: 700; }
.axis-card__title { font-weight: 800; font-size: 22px; color: #fff; margin-bottom: 20px; letter-spacing: -0.02em; }
.axis-card__compare { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; padding: 16px 0; border-top: 1px solid var(--iruri-border); }
.axis-card__compare-side { font-size: 14px; color: var(--iruri-text); line-height: 1.5; }
.axis-card__compare-side strong { display: block; color: #fff; font-weight: 700; margin-bottom: 4px; }
.axis-card__compare-vs { color: var(--course-accent); font-size: 12px; font-weight: 700; font-family: 'JetBrains Mono', monospace; }

/* ─── Detail list (간단한 bullet 형식) ─── */
.detail-list { list-style: none; padding: 0; margin: 0; }
.detail-list li { display: grid; grid-template-columns: 32px 1fr; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--iruri-border); font-size: 15px; line-height: 1.6; }
.detail-list li:last-child { border-bottom: 0; }
.detail-list__num { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--course-accent); font-weight: 700; padding-top: 2px; letter-spacing: 0.05em; }
.detail-list__title { color: #fff; font-weight: 700; margin-bottom: 4px; }
.detail-list__desc { color: var(--iruri-text-mute); font-size: 14px; }

/* ─── Subjects strategy table (과목별 전략) ─── */
.strategy-table { width: 100%; border-collapse: collapse; }
.strategy-table tbody tr { border-top: 1px solid var(--iruri-border); }
.strategy-table tbody tr:last-child { border-bottom: 1px solid var(--iruri-border); }
.strategy-table td { padding: 16px; font-size: 14px; line-height: 1.55; }
.strategy-table td:first-child { color: var(--course-accent); font-weight: 700; width: 200px; }
.strategy-table td:nth-child(2) { color: var(--iruri-text); }

/* ─── CTA section ─── */
.course-cta { text-align: center; padding: 96px 0; border-top: 1px solid var(--iruri-border); }
.course-cta__eyebrow { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--course-accent); letter-spacing: 0.25em; margin-bottom: 16px; font-weight: 600; }
.course-cta__title { font-weight: 800; font-size: clamp(32px, 5vw, 48px); line-height: 1.2; letter-spacing: -0.025em; color: #fff; margin-bottom: 16px; }
.course-cta__title em { font-style: normal; color: var(--course-accent); }
.course-cta__lede { font-size: 16px; color: var(--iruri-text-mute); margin-bottom: 40px; max-width: 560px; margin-left: auto; margin-right: auto; line-height: 1.65; }
.course-cta__group { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.btn-primary { background: linear-gradient(135deg, #c5a572, #e6c370); color: #0f1218; padding: 14px 28px; border-radius: 999px; font-size: 15px; font-weight: 700; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; transition: transform 0.15s, box-shadow 0.15s; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(197,165,114,0.3); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid var(--iruri-border-strong); padding: 14px 28px; border-radius: 999px; font-size: 15px; font-weight: 500; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; transition: border-color 0.15s; }
.btn-ghost:hover { border-color: var(--course-accent); }
.btn-primary svg, .btn-ghost svg { width: 16px; height: 16px; }

/* ─── Footer (공통) ─── */
.site-footer { background: var(--iruri-bg-alt); border-top: 1px solid var(--iruri-border); padding: 64px 0 32px; font-size: 13px; color: var(--iruri-text-mute); }
.site-footer__top { display: grid; grid-template-columns: 1.5fr 2fr 1.5fr; gap: 48px; padding-bottom: 36px; border-bottom: 1px solid var(--iruri-border); }
.site-footer__brand-name { font-weight: 800; font-size: 18px; color: #fff; margin-bottom: 12px; letter-spacing: -0.02em; }
.site-footer__brand-info { line-height: 1.7; }
.site-footer__brand-info strong { color: #fff; }
.site-footer__brand-info a { color: #fff; text-decoration: none; }
.site-footer__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.site-footer__nav h3 { color: #fff; font-weight: 700; font-size: 13px; margin-bottom: 12px; }
.site-footer__nav ul { list-style: none; padding: 0; margin: 0; }
.site-footer__nav li { margin-bottom: 6px; }
.site-footer__nav a { color: var(--iruri-text-mute); font-size: 13px; text-decoration: none; transition: color 0.15s; }
.site-footer__nav a:hover { color: var(--iruri-gold); }
.site-footer__phone { font-weight: 800; font-size: 24px; color: var(--iruri-gold); letter-spacing: -0.02em; margin-bottom: 8px; display: block; text-decoration: none; }
.site-footer__copyright { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--iruri-border); font-size: 12px; color: var(--iruri-text-dim); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.site-footer__copyright a { color: var(--iruri-text-mute); text-decoration: none; margin-left: 16px; }

/* ─── Floating CTA ─── */
.float-cta { position: fixed; right: 24px; bottom: 24px; z-index: 99; }
.float-cta a { background: linear-gradient(135deg, #c5a572, #e6c370); color: #0f1218; padding: 12px 20px; border-radius: 999px; font-weight: 700; font-size: 13px; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; box-shadow: 0 6px 20px rgba(197,165,114,0.35); }
.float-cta a svg { width: 16px; height: 16px; }

/* ─── Page-specific accent colors ─── */
/* 3색군 통일 (2026-05-29 critic v2 잔여 해소) — 이공(수·과)=stem 진녹 #4a9d7e / 그 외=humanities 골드 #c5a572. index.css 매핑 미러링, 멀티컬러 60-30-10 이탈 해소 */
body.course-korean    { --course-accent: #c5a572; --course-tag-bg: rgba(197, 165, 114, 0.16); }
body.course-math      { --course-accent: #4a9d7e; --course-tag-bg: rgba(74, 157, 126, 0.14); }
body.course-english   { --course-accent: #c5a572; --course-tag-bg: rgba(197, 165, 114, 0.12); }
body.course-science   { --course-accent: #4a9d7e; --course-tag-bg: rgba(74, 157, 126, 0.14); }
body.course-society   { --course-accent: #c5a572; --course-tag-bg: rgba(197, 165, 114, 0.12); }
body.course-inmoon    { --course-accent: #c5a572; --course-tag-bg: rgba(197, 165, 114, 0.12); }
body.course-surisuri  { --course-accent: #c5a572; --course-tag-bg: rgba(197, 165, 114, 0.12); }
body.course-consulting { --course-accent: #c5a572; --course-tag-bg: rgba(197, 165, 114, 0.12); }

/* ─── Mobile nav toggle (default hidden on desktop) — index.css 패턴 이식 (2026-05-29 F4) ─── */
.site-nav__toggle {
  display: none; align-items: center; gap: 8px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.16);
  color: #fafaf7;
  padding: 8px 12px; border-radius: 8px;
  font: inherit; font-size: 13px; cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.site-nav__toggle:hover { border-color: var(--course-accent, #c5a572); }
.site-nav__toggle:focus-visible { outline: 2px solid #c5a572; outline-offset: 2px; }
.site-nav__toggle svg { width: 18px; height: 18px; flex-shrink: 0; }
.site-nav__toggle .site-nav__toggle-close { display: none; }
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-open { display: none; }
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-close { display: block; }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .solutions__grid, .axes__grid, .site-footer__top { grid-template-columns: 1fr; }
  .steps__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  /* ── Mobile nav: hamburger drawer (2026-05-29 F4 — index.css L896~937 이식) ── */
  .site-nav__menu {
    display: none;
    position: fixed; top: 64px; left: 0; right: 0;
    background: #0f1218;
    border-top: 1px solid rgba(255,255,255,0.08);
    flex-direction: column; padding: 16px 24px; gap: 4px;
    z-index: 999; max-height: calc(100vh - 64px); overflow-y: auto;
  }
  .site-nav__menu.is-open { display: flex; }
  .site-nav__menu a {
    padding: 14px 0; font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
  }
  .site-nav__toggle { display: inline-flex; }
  .site-nav__cta { padding: 8px 14px; font-size: 13px; }
  .steps__grid { grid-template-columns: 1fr; }
  .axis-card__compare { grid-template-columns: 1fr; text-align: center; }
  .course-hero { padding: 16px 0 48px; }
  .section { padding: 64px 0; }
  .breadcrumb { padding: 80px 0 16px; }
}
.footer-section-title { color: #fff; font-weight: 700; font-size: 13px; margin-bottom: 12px; }

/* ═══ 합격 현황 proof (consulting) ═══ */
.proof-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 56px; }
.proof-stat { text-align: center; padding: 32px 16px; background: var(--iruri-bg-card); border: 1px solid var(--iruri-border); border-radius: 12px; }
.proof-stat__num { display: block; font-family: 'JetBrains Mono', monospace; font-size: 48px; font-weight: 700; color: var(--course-accent); line-height: 1; letter-spacing: -0.02em; }
.proof-stat__label { display: block; margin-top: 12px; font-size: 13px; color: var(--iruri-text-dim); letter-spacing: 0.04em; }
.proof-stat--hl { box-shadow: inset 0 3px 0 var(--course-accent); border-color: var(--iruri-border-strong); }
.proof-stat--hl .proof-stat__label { color: var(--iruri-text-mute); }

.proof-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 14px; margin-bottom: 48px; }
.proof-cert { background: var(--iruri-bg-alt); border: 1px solid var(--iruri-border-strong); border-radius: 8px; overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.proof-cert:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.45); }
.proof-cert img { width: 100%; aspect-ratio: 600 / 820; object-fit: contain; background: #fff; display: block; }
.proof-cert figcaption { padding: 10px 6px; font-size: 11px; font-weight: 600; color: var(--iruri-text-mute); text-align: center; letter-spacing: -0.01em; line-height: 1.35; }
.proof-cert--med { border-color: var(--course-accent); box-shadow: 0 0 0 1px color-mix(in srgb, var(--course-accent) 28%, transparent); }
.proof-cert--med figcaption { color: var(--iruri-gold-light); }

.proof-subhead { text-align: center; font-size: 15px; color: var(--iruri-text-mute); margin-bottom: 20px; }
.proof-subhead strong { color: #fff; font-weight: 700; }
.proof-breakdown { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 28px; }
.proof-chip { font-size: 13px; padding: 7px 14px; border-radius: 999px; background: var(--iruri-bg-card); border: 1px solid var(--iruri-border); color: var(--iruri-text-mute); }
.proof-chip strong { color: var(--course-accent); font-family: 'JetBrains Mono', monospace; margin-left: 5px; font-weight: 700; }
.proof-chip--top { border-color: var(--course-accent); color: #fff; }
.proof-note { font-size: 12px; color: var(--iruri-text-dim); text-align: center; line-height: 1.7; max-width: 720px; margin: 0 auto; }

@media (max-width: 640px) {
  .proof-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .proof-stat { padding: 24px 12px; }
  .proof-stat__num { font-size: 38px; }
  .proof-wall { grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 10px; }
  .proof-cert figcaption { font-size: 10px; padding: 8px 4px; }
}