/* ============================================
   Lumina Academy Style System
   Aesthetic: Editorial / Magazine
   Palette: Forest Deep Green + Warm Off-White + Amber
   ============================================ */

:root {
  --green-900: #0f2e23;
  --green-800: #1a3d30;
  --green-700: #1f4a39;
  --green-600: #2a5c47;
  --green-500: #3a7d5c;
  --cream: #f5f0e8;
  --cream-dark: #ede6d8;
  --amber: #c68a3c;
  --amber-light: #d4a24e;
  --amber-dark: #a67328;
  --text-dark: #1a1814;
  --text-body: #3d3830;
  --text-muted: #6b6358;
  --white: #ffffff;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "Noto Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--text-body);
  background: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.grain-overlay {
  position: fixed; inset: 0; z-index: 1000; pointer-events: none; opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox=%270 0 256 256%27 xmlns=%27http://www.w3.org/2000/svg%27%3E%3Cfilter id=%27noise%27%3E%3CfeTurbulence type=%27fractalNoise%27 baseFrequency=%270.9%27 numOctaves=%274%27 stitchTiles=%27stitch%27/%3E%3C/filter%3E%3Crect width=%27100%25%27 height=%27100%25%27 filter=%27url(%23noise)%27/%3E%3C/svg%3E");
  background-size: 200px;
}

h1, h2, h3, h4, h5 {
  font-family: "Fraunces", Georgia, serif;
  color: var(--text-dark); line-height: 1.15; font-weight: 500;
}
p { max-width: 65ch; }
.italic-accent { font-style: italic; color: var(--amber-dark); }
.italic-accent-light { font-style: italic; color: var(--amber-light); }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(245, 240, 232, 0.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15, 46, 35, 0.08);
}
.nav-container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; height: 72px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.logo-mark { font-family: "Fraunces", Georgia, serif; font-size: 1.5rem; font-weight: 600; color: var(--white); background: var(--green-800); width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); }
.logo-text { font-family: "Fraunces", Georgia, serif; font-size: 1.15rem; font-weight: 500; color: var(--green-800); }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text-muted); font-size: 0.875rem; font-weight: 500; transition: color 0.25s ease; }
.nav-links a:hover { color: var(--green-700); }

.btn-primary { display: inline-flex; align-items: center; padding: 0.65rem 1.5rem; background: var(--green-700); color: var(--white); border: none; border-radius: var(--radius-sm); font-family: "Noto Sans SC", sans-serif; font-size: 0.875rem; font-weight: 500; text-decoration: none; cursor: pointer; transition: background 0.25s ease, transform 0.15s ease; }
.btn-primary:hover { background: var(--green-800); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary { display: inline-flex; align-items: center; padding: 0.65rem 1.5rem; background: transparent; color: var(--green-700); border: 1.5px solid var(--green-700); border-radius: var(--radius-sm); font-family: "Noto Sans SC", sans-serif; font-size: 0.875rem; font-weight: 500; text-decoration: none; cursor: pointer; transition: all 0.25s ease; }
.btn-secondary:hover { background: var(--green-700); color: var(--white); }
.btn-nav { font-size: 0.8rem; padding: 0.5rem 1.2rem; }

.hero { padding-top: 72px; }
.hero-grid { max-width: 1280px; margin: 0 auto; padding: 4rem 2rem 3rem; display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.hero-eyebrow { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em; color: var(--amber); margin-bottom: 1.5rem; }
.hero-title { font-size: clamp(2.4rem, 4.5vw, 3.8rem); letter-spacing: -0.02em; margin-bottom: 1.5rem; color: var(--green-900); }
.hero-sub { font-size: 1.05rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 2rem; }
.hero-cta-row { display: flex; gap: 1rem; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius-lg); }
.hero-stat-card { position: absolute; bottom: -24px; right: -16px; background: var(--white); padding: 1.2rem 1.8rem; border-radius: var(--radius-md); box-shadow: 0 8px 32px rgba(15, 46, 35, 0.1); display: flex; flex-direction: column; }
.stat-num { font-family: "Fraunces", Georgia, serif; font-size: 2.2rem; font-weight: 600; color: var(--green-700); line-height: 1; }
.stat-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; margin-top: 0.25rem; }

.logo-wall { max-width: 1280px; margin: 0 auto; padding: 2rem 2rem 3rem; border-top: 1px solid rgba(15, 46, 35, 0.08); }
.logo-wall-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.18em; color: var(--text-muted); font-weight: 600; margin-bottom: 1.2rem; }
.logo-strip { display: flex; gap: 3rem; flex-wrap: wrap; align-items: center; }
.logo-strip span { font-size: 0.95rem; font-weight: 500; color: var(--text-muted); opacity: 0.6; transition: opacity 0.3s; }
.logo-strip span:hover { opacity: 1; }

.section-head { max-width: 720px; margin-bottom: 3.5rem; }
.section-head--center { text-align: center; margin-left: auto; margin-right: auto; }
.section-title { font-size: clamp(2rem, 3.5vw, 2.8rem); letter-spacing: -0.015em; margin-bottom: 1rem; color: var(--green-900); }
.section-title-light { font-size: clamp(2rem, 3.5vw, 2.8rem); letter-spacing: -0.015em; margin-bottom: 1rem; color: var(--cream); }
.section-lead { font-size: 1.05rem; color: var(--text-muted); line-height: 1.8; }

.curriculum { padding: 6rem 2rem; max-width: 1280px; margin: 0 auto; }
.curriculum-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.course-card { background: var(--white); padding: 2rem; border-radius: var(--radius-lg); border: 1px solid rgba(15, 46, 35, 0.06); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.course-card:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(15, 46, 35, 0.08); }
.course-card--tall { grid-row: span 2; }
.course-card--wide { grid-column: span 2; }
.course-icon { font-size: 1.6rem; color: var(--amber); margin-bottom: 1rem; }
.course-tag { display: inline-block; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.12em; color: var(--green-600); background: rgba(15, 46, 35, 0.06); padding: 0.25rem 0.6rem; border-radius: var(--radius-sm); margin-bottom: 0.8rem; }
.course-card h3 { font-size: 1.3rem; margin-bottom: 0.8rem; }
.course-card p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 1rem; }
.course-meta { list-style: none; font-size: 0.8rem; color: var(--text-muted); }
.course-meta li { padding: 0.3rem 0; border-top: 1px solid rgba(15, 46, 35, 0.06); }
.course-meta li:first-child { border-top: none; }

.solutions { background: var(--green-800); padding: 6rem 2rem; }
.solutions-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.solutions-lead { font-size: 1.05rem; color: rgba(245, 240, 232, 0.7); line-height: 1.8; margin-top: 0.5rem; }
.solutions-steps { display: flex; flex-direction: column; gap: 2rem; }
.step { padding-left: 2rem; border-left: 2px solid var(--amber); }
.step-num { font-family: "Fraunces", Georgia, serif; font-size: 2rem; font-weight: 300; color: var(--amber); display: block; line-height: 1; margin-bottom: 0.5rem; }
.step h4 { color: var(--cream); font-size: 1.15rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.9rem; color: rgba(245, 240, 232, 0.65); line-height: 1.7; }

.instructors { padding: 6rem 2rem; max-width: 1280px; margin: 0 auto; }
.instructor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.instructor-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid rgba(15, 46, 35, 0.06); transition: transform 0.3s ease; }
.instructor-card:hover { transform: translateY(-2px); }
.instructor-photo { width: 100%; height: 260px; overflow: hidden; }
.instructor-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.instructor-card:hover .instructor-photo img { transform: scale(1.04); }
.instructor-card h3 { font-size: 1.15rem; padding: 1.2rem 1.5rem 0; margin-bottom: 0.2rem; }
.instructor-role { font-size: 0.8rem; color: var(--amber-dark); font-weight: 500; padding: 0 1.5rem; margin-bottom: 0.6rem; }
.instructor-bio { font-size: 0.85rem; color: var(--text-muted); padding: 0 1.5rem 1.5rem; line-height: 1.65; }
.instructor-card--join { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; background: var(--green-800); border-color: var(--green-700); }
.instructor-photo-placeholder { width: 80px; height: 80px; border-radius: 50%; border: 2px solid var(--amber); display: flex; align-items: center; justify-content: center; font-size: 2rem; color: var(--amber); margin-bottom: 1rem; margin-top: 2rem; }
.instructor-card--join h3 { color: var(--cream); padding: 0 1.5rem; }
.instructor-card--join .instructor-role { color: var(--amber); padding: 0 1.5rem; }
.instructor-card--join .instructor-bio { color: rgba(245, 240, 232, 0.6); padding: 0 1.5rem 2rem; }

.cases { background: var(--green-900); padding: 6rem 2rem; }
.case-list { max-width: 1280px; margin: 0 auto; display: flex; flex-direction: column; gap: 0; }
.case-item { display: grid; grid-template-columns: 80px 1fr; gap: 2rem; padding: 3rem 0; border-top: 1px solid rgba(245, 240, 232, 0.1); }
.case-item:last-child { border-bottom: 1px solid rgba(245, 240, 232, 0.1); }
.case-number { font-family: "Fraunces", Georgia, serif; font-size: 2.5rem; font-weight: 300; color: var(--amber); line-height: 1; }
.case-industry { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--amber); font-weight: 600; margin-bottom: 0.5rem; display: block; }
.case-content h3 { color: var(--cream); font-size: 1.4rem; margin-bottom: 0.8rem; }
.case-content p { font-size: 0.92rem; color: rgba(245, 240, 232, 0.6); line-height: 1.75; margin-bottom: 1.5rem; }
.case-results { display: flex; gap: 2.5rem; flex-wrap: wrap; }
.case-metric { display: flex; flex-direction: column; }
.metric-num { font-family: "Fraunces", Georgia, serif; font-size: 1.6rem; font-weight: 500; color: var(--cream); line-height: 1; }
.metric-label { font-size: 0.75rem; color: rgba(245, 240, 232, 0.5); margin-top: 0.3rem; }

.results { padding: 6rem 2rem; background: var(--cream-dark); }
.results-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.result-block { text-align: left; padding: 1rem 0; border-top: 2px solid var(--green-700); }
.result-num { font-family: "Fraunces", Georgia, serif; font-size: clamp(2.2rem, 4vw, 3rem); font-weight: 500; color: var(--green-800); display: block; line-height: 1; margin-bottom: 0.3rem; }
.result-label { font-size: 0.85rem; font-weight: 600; color: var(--text-dark); display: block; margin-bottom: 0.3rem; }
.result-detail { font-size: 0.8rem; color: var(--text-muted); }

.contact { background: var(--green-800); padding: 6rem 2rem; }
.contact-inner { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact-lead { font-size: 1.05rem; color: rgba(245, 240, 232, 0.65); line-height: 1.8; }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(245, 240, 232, 0.5); display: flex; flex-direction: column; gap: 0.4rem; }
.form-full { width: 100%; }
.contact-form input, .contact-form textarea { background: rgba(245, 240, 232, 0.08); border: 1px solid rgba(245, 240, 232, 0.15); border-radius: var(--radius-sm); padding: 0.7rem 0.9rem; color: var(--cream); font-family: "Noto Sans SC", sans-serif; font-size: 0.9rem; transition: border-color 0.25s ease; width: 100%; }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: rgba(245, 240, 232, 0.3); }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--amber); }
.contact-form textarea { resize: vertical; min-height: 80px; }
.btn-submit { align-self: flex-start; margin-top: 0.5rem; }
.form-note { font-size: 0.82rem; color: var(--amber); min-height: 1.2em; }

.site-footer { background: var(--green-900); padding: 4rem 2rem 2rem; }
.footer-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid rgba(245, 240, 232, 0.1); }
.footer-brand p { font-size: 0.85rem; color: rgba(245, 240, 232, 0.5); margin-top: 1rem; line-height: 1.65; }
.footer-col h5 { color: var(--cream); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 1rem; }
.footer-col ul { list-style: none; }
.footer-col li { font-size: 0.85rem; color: rgba(245, 240, 232, 0.5); padding: 0.25rem 0; }
.footer-col a { color: rgba(245, 240, 232, 0.5); text-decoration: none; transition: color 0.25s; }
.footer-col a:hover { color: var(--cream); }
.footer-bottom { max-width: 1280px; margin: 0 auto; display: flex; justify-content: space-between; padding-top: 1.5rem; font-size: 0.75rem; color: rgba(245, 240, 232, 0.3); }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }
.reveal-delay-6 { transition-delay: 0.48s; }

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; padding-top: 3rem; }
  .hero-visual img { height: 320px; }
  .hero-stat-card { bottom: -16px; right: 16px; }
  .solutions-grid, .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
  .instructor-grid { grid-template-columns: repeat(2, 1fr); }
  .results-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .nav-links { display: none; }
}
@media (max-width: 640px) {
  .hero-grid { padding: 2rem 1rem; }
  .hero-cta-row { flex-direction: column; }
  .curriculum-grid { grid-template-columns: 1fr; }
  .course-card--tall, .course-card--wide { grid-row: auto; grid-column: auto; }
  .instructor-grid { grid-template-columns: 1fr; }
  .case-item { grid-template-columns: 1fr; gap: 1rem; }
  .results-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; }
  .logo-strip { gap: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .course-card:hover, .instructor-card:hover { transform: none; }
}