/* БлогШкола — стиль */
:root{
  --c-bg:#fafafc; --c-paper:#ffffff; --c-paper2:#f5f5f8; --c-line:#e5e7eb; --c-line-soft:#f0f0f4;
  --c-ink:#0f172a; --c-ink-soft:#475569; --c-muted:#94a3b8;
  --c-accent:#7C3AED; --c-accent-soft:#9D6FFF;
  --c-coral:#FF6B6B; --c-mint:#10B981; --c-amber:#F59E0B;
  --shadow:0 4px 16px rgba(15,23,42,.06); --shadow-lg:0 16px 48px rgba(15,23,42,.10);
  --radius:14px; --radius-sm:10px;
  --font-sans:'Inter',-apple-system,sans-serif; --font-display:'Playfair Display',Georgia,serif;
}
*{box-sizing:border-box}
body{font-family:var(--font-sans);color:var(--c-ink);background:var(--c-bg);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;letter-spacing:-0.01em;color:var(--c-ink)}
a{color:var(--c-accent);text-decoration:none;transition:color .15s}
a:hover{color:var(--c-accent-soft)}

.site-header{background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--c-line);position:sticky;top:0;z-index:1000}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--c-ink);font-family:var(--font-display);font-size:24px;font-weight:700;text-decoration:none}
.brand-glyph{font-size:24px}
.primary-nav{display:flex;gap:24px;align-items:center}
.primary-nav a{color:var(--c-ink-soft);font-size:14px;font-weight:500;text-decoration:none}
.primary-nav a:hover{color:var(--c-accent)}

.btn{border-radius:999px;font-weight:600;padding:10px 20px;font-size:14px;border-width:1.5px;transition:all .15s}
.btn-sm{padding:7px 14px;font-size:13px}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-dark{background:var(--c-ink);color:#fff;border-color:var(--c-ink)}
.btn-dark:hover{background:var(--c-accent);border-color:var(--c-accent);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-accent:hover{background:var(--c-accent-soft);color:#fff;transform:translateY(-1px);box-shadow:0 8px 24px rgba(124,58,237,.3)}
.btn-outline-dark{border-color:var(--c-line);color:var(--c-ink);background:transparent}
.btn-outline-dark:hover{background:var(--c-paper2)}

/* Hero */
.hero{position:relative;padding:80px 0 100px;background:linear-gradient(135deg,#fff 0%,#f5e9ff 50%,#fff 100%);overflow:hidden}
.hero::before{content:'';position:absolute;top:-30%;right:-20%;width:60%;height:140%;background:radial-gradient(circle,rgba(124,58,237,.10),transparent 60%);pointer-events:none}
.hero h1{font-size:clamp(38px,5.5vw,68px);line-height:1.05;margin-bottom:18px}
.hero h1 em{font-style:italic;color:var(--c-accent)}
.hero .lead{font-size:19px;color:var(--c-ink-soft);max-width:640px;margin-bottom:32px}
.hero-stats{display:flex;gap:40px;margin-top:48px;flex-wrap:wrap}
.hero-stat strong{font-family:var(--font-display);font-size:36px;display:block;color:var(--c-accent);font-weight:700}
.hero-stat span{color:var(--c-muted);font-size:13px}

.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:56px}
.section-title .eyebrow{display:inline-block;color:var(--c-accent);font-size:13px;text-transform:uppercase;letter-spacing:2px;font-weight:600;margin-bottom:12px}
.section-title h2{font-size:clamp(28px,4vw,44px);margin-bottom:12px}
.section-title p{color:var(--c-muted);max-width:600px;margin:0 auto}

/* Course card */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.course-card{background:var(--c-paper);border-radius:var(--radius);overflow:hidden;border:1px solid var(--c-line-soft);transition:transform .2s,box-shadow .2s;text-decoration:none;color:var(--c-ink);display:flex;flex-direction:column}
.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);color:var(--c-ink)}
.course-cover{aspect-ratio:16/9;overflow:hidden;background:var(--c-paper2);position:relative}
.course-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.course-card:hover .course-cover img{transform:scale(1.05)}
.course-cat{position:absolute;top:14px;left:14px;background:rgba(0,0,0,.7);backdrop-filter:blur(6px);color:#fff;padding:5px 12px;border-radius:999px;font-size:11px;font-weight:600;letter-spacing:.5px}
.course-level{position:absolute;top:14px;right:14px;background:#fff;color:var(--c-ink);padding:5px 12px;border-radius:999px;font-size:11px;font-weight:600}
.course-body{padding:22px;flex:1;display:flex;flex-direction:column}
.course-card h3{font-size:20px;margin:0 0 8px;line-height:1.3}
.course-card .desc{font-size:14px;color:var(--c-ink-soft);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.course-meta{display:flex;gap:14px;font-size:12px;color:var(--c-muted);margin-bottom:14px}
.course-meta b{color:var(--c-ink)}
.course-footer{display:flex;justify-content:space-between;align-items:center;padding-top:14px;border-top:1px solid var(--c-line-soft)}
.course-price{font-family:var(--font-display);font-size:22px;font-weight:700;color:var(--c-accent)}
.course-price small{font-size:12px;color:var(--c-muted);font-family:var(--font-sans);font-weight:400;display:block;margin-top:-4px}
.course-rating{font-size:13px;color:var(--c-ink)}.course-rating .fa-star{color:var(--c-amber)}

/* Course detail */
.course-hero{background:linear-gradient(180deg,var(--c-paper2),var(--c-bg));padding:50px 0}
.course-hero img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow-lg);aspect-ratio:16/9;object-fit:cover}

.lesson-list{background:var(--c-paper);border-radius:var(--radius);border:1px solid var(--c-line-soft);overflow:hidden}
.lesson-item{padding:18px 22px;border-bottom:1px solid var(--c-line-soft);display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--c-ink);transition:background .15s}
.lesson-item:last-child{border-bottom:0}
.lesson-item:hover{background:var(--c-paper2);color:var(--c-ink)}
.lesson-num{width:34px;height:34px;border-radius:50%;background:var(--c-paper2);color:var(--c-muted);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:13px}
.lesson-item.locked .lesson-num{background:var(--c-paper2)}
.lesson-item.free .lesson-num{background:var(--c-mint);color:#fff}
.lesson-info{flex:1}
.lesson-info h5{font-family:var(--font-sans);font-size:15px;margin:0 0 2px;font-weight:600}
.lesson-info p{font-size:12px;color:var(--c-muted);margin:0}
.lesson-meta{font-size:12px;color:var(--c-muted)}
.badge-free{background:var(--c-mint);color:#fff;font-size:10px;padding:3px 8px;border-radius:6px;font-weight:700}
.badge-locked{background:var(--c-paper2);color:var(--c-muted);font-size:10px;padding:3px 8px;border-radius:6px;font-weight:600}

/* Buy form */
.buy-form{background:var(--c-paper);border-radius:var(--radius);padding:28px;border:1px solid var(--c-line-soft);position:sticky;top:90px;box-shadow:var(--shadow)}
.price-tag{background:linear-gradient(135deg,var(--c-accent),var(--c-accent-soft));color:#fff;padding:18px;border-radius:var(--radius-sm);text-align:center;margin-bottom:18px}
.price-tag .big{font-family:var(--font-display);font-size:34px;font-weight:700;line-height:1}
.price-tag .or{margin:6px 0 4px;font-size:12px;opacity:.85}
.price-tag .month{font-size:15px}

/* Lesson view */
.lesson-video{position:relative;padding-bottom:56.25%;height:0;border-radius:var(--radius);overflow:hidden;background:#000;margin-bottom:24px}
.lesson-video iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}
.lesson-content{font-size:17px;line-height:1.75;max-width:760px}
.lesson-content h1,.lesson-content h2{margin-top:1.5em}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:32px}

/* Forms */
.form-control,.form-select{border-radius:var(--radius-sm);border-color:var(--c-line);font-size:14px;padding:11px 14px}
.form-control:focus,.form-select:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(124,58,237,.10)}

.alert{border-radius:var(--radius-sm);border:0}
.alert-success{background:#ecfdf5;color:#047857}
.alert-danger{background:#fef2f2;color:#b91c1c}
.alert-info{background:#f5e9ff;color:#6d28d9}

.site-footer{background:var(--c-ink);color:rgba(255,255,255,.75)}
.brand-footer{color:#fff}
.site-footer h6{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:1.5px;font-weight:600;margin-bottom:14px;font-family:var(--font-sans)}
.site-footer a{color:rgba(255,255,255,.7);font-size:14px}
.site-footer a:hover{color:var(--c-accent-soft)}
.site-footer hr{border-color:rgba(255,255,255,.1)}

.stat-card{background:var(--c-paper);border-radius:var(--radius);padding:22px;border:1px solid var(--c-line-soft)}
.stat-card .num{font-family:var(--font-display);font-size:34px;color:var(--c-accent);font-weight:700;line-height:1}
.stat-card .lbl{color:var(--c-muted);font-size:13px;margin-top:6px}

@media(max-width:768px){
  .section{padding:56px 0}
  .hero{padding:60px 0 80px}
  .buy-form{position:static}
}