:root {
  --bg: #050505;
  --bg-soft: #101015;
  --bg-soft-2: #14141c;
  --text: #f5f5f5;
  --muted: #8b8b8f;
  --accent: #ff2438;
  --accent-soft: rgba(255, 36, 56, 0.12);
  --border: #26262e;
  --border-soft: rgba(255, 255, 255, 0.08);
  --success: #24c36b;
  --warning: #ffb020;
  --danger: #ff4d61;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-pill: 999px;
  --transition: 0.22s ease-out;
  --shadow-main: 0 25px 70px rgba(0, 0, 0, 0.75);
  --shadow-accent: 0 16px 40px rgba(255, 36, 56, 0.22);
  --max-width: 1180px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background:
    radial-gradient(circle at top, rgba(255, 36, 56, 0.08) 0, transparent 22%),
    radial-gradient(circle at top, #191921 0, #050506 55%, #000 100%);
}
a { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }
button, input, select, textarea { font:inherit; }
ul { list-style:none; }

.orb {
  position: fixed; width: 260px; height: 260px; border-radius: 50%; filter: blur(40px);
  opacity: 0.35; pointer-events: none; z-index: 0; mix-blend-mode: screen;
}
.orb.red { background: radial-gradient(circle, rgba(255, 36, 56, 0.9), transparent 60%); top: 10%; left: -40px; animation: float1 16s infinite alternate ease-in-out; }
.orb.dark { background: radial-gradient(circle, rgba(40, 40, 60, 0.9), transparent 60%); bottom: -60px; right: -40px; animation: float2 20s infinite alternate ease-in-out; }
@keyframes float1 { 0%{transform:translate(0,0)} 100%{transform:translate(40px,60px)} }
@keyframes float2 { 0%{transform:translate(0,0)} 100%{transform:translate(-50px,-40px)} }

.site-shell { min-height:100vh; display:flex; flex-direction:column; position:relative; z-index:1; }
.site-header {
  position: sticky; top: 0; z-index: 20; padding: 1.1rem 0;
  background: rgba(5, 5, 6, 0.9); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.nav {
  max-width: var(--max-width); margin:0 auto; padding:0 1.5rem;
  display:flex; justify-content:space-between; align-items:center; gap:1rem;
}
.logo-wrap { display:flex; flex-direction:column; gap:0.12rem; position:relative; z-index:2; }
.logo-main { font-size:1.05rem; font-weight:900; letter-spacing:0.2em; text-transform:uppercase; color:#fff; }
.logo-sub { display:flex; flex-direction:column; align-items:flex-start; gap:0.08rem; margin-top:0.1rem; }
.logo-sub-top { font-size:0.7rem; letter-spacing:0.16em; text-transform:uppercase; color:var(--accent); font-weight:700; }
.logo-sub-bottom { font-size:0.62rem; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); }
.nav-links { display:flex; gap:0.6rem; flex-wrap:wrap; justify-content:flex-end; }
.nav-pill {
  padding:0.48rem 1rem; border-radius:var(--radius-pill); font-size:0.78rem;
  text-transform:uppercase; letter-spacing:0.16em; color:var(--muted);
  border:1px solid transparent; transition:var(--transition);
}
.nav-pill:hover { background:#12121a; border-color:#2d2d35; color:#fff; }
.nav-pill.active { background:rgba(255, 36, 56, 0.12); border-color:var(--accent); color:#fff; box-shadow:0 10px 28px rgba(255, 36, 56, 0.32); }

.site-container {
  max-width: var(--max-width); margin:0 auto; padding:0 20px; position:relative; z-index:1; width:100%;
}

main { flex:1; }

.btn {
  display:inline-flex; align-items:center; justify-content:center; min-height:50px; padding:0 1.35rem;
  border-radius:var(--radius-pill); font-size:0.82rem; font-weight:800; letter-spacing:0.14em;
  text-transform:uppercase; border:1px solid transparent; transition:var(--transition); cursor:pointer;
}
.btn.primary {
  background:linear-gradient(180deg, #ff3347, #d91528); color:#fff; box-shadow:0 14px 30px rgba(255, 36, 56, 0.3);
}
.btn.primary:hover { transform:translateY(-2px); box-shadow:0 18px 36px rgba(255, 36, 56, 0.38); }
.btn.secondary { background:rgba(255, 255, 255, 0.03); border-color:rgba(255, 255, 255, 0.08); color:#fff; }
.btn.secondary:hover { transform:translateY(-2px); border-color:rgba(255, 36, 56, 0.4); background:rgba(255, 36, 56, 0.08); }
.btn.small { min-height:42px; padding:0 1rem; font-size:0.74rem; }
.btn.block { width:100%; }

.grid { display:grid; gap:1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }

.panel {
  position:relative; overflow:hidden; background:linear-gradient(180deg, rgba(16,16,22,0.94), rgba(8,8,12,0.94));
  border:1px solid var(--border-soft); border-radius:28px; padding:32px; box-shadow:var(--shadow-main);
}
.panel::before {
  content:""; position:absolute; inset:0;
  background:radial-gradient(circle at top right, rgba(255,36,56,0.16), transparent 30%);
  pointer-events:none;
}

.badge {
  position:relative; z-index:1; display:inline-flex; align-items:center; gap:.45rem; padding:0.58rem 1rem;
  border-radius:var(--radius-pill); border:1px solid rgba(255, 36, 56, 0.32);
  background:rgba(255, 36, 56, 0.1); color:#fff; font-size:0.75rem; font-weight:800;
  letter-spacing:0.16em; text-transform:uppercase;
}
.badge.neutral {
  border-color:rgba(255,255,255,.1);
  background:rgba(255,255,255,.04);
}
.badge.success {
  border-color:rgba(36,195,107,.25);
  background:rgba(36,195,107,.12);
}

.home-hero { padding:72px 0 28px; }
.hero-panel { min-height:500px; display:flex; align-items:flex-end; padding:46px; }
.hero-bg {
  position:absolute; inset:0;
  background:
    linear-gradient(90deg, rgba(10,10,14,.82) 0%, rgba(10,10,14,.56) 42%, rgba(10,10,14,.3) 100%),
    radial-gradient(circle at left center, rgba(255,36,56,.22), transparent 30%),
    linear-gradient(120deg, #13131a, #0b1018 36%, #14141e 65%, #090b10 100%);
}
.hero-bg::after{
  content:""; position:absolute; right:-4%; bottom:-5%; width:54%; height:72%;
  background:
    radial-gradient(circle at 25% 45%, rgba(255,255,255,.08), transparent 18%),
    linear-gradient(145deg, rgba(255,255,255,.06), rgba(255,255,255,.01));
  border-radius: 32px 160px 24px 120px / 28px 90px 30px 100px;
  transform: rotate(-7deg);
  border:1px solid rgba(255,255,255,.08);
  box-shadow: inset 0 0 80px rgba(0,0,0,.45), 0 40px 80px rgba(0,0,0,.35);
  opacity:.95;
}
.hero-copy { position:relative; z-index:1; max-width:760px; }
.hero-title {
  position:relative; z-index:1; max-width:900px; font-size:clamp(2.6rem, 4.8vw, 5rem);
  line-height:1.02; font-weight:900; letter-spacing:-0.04em; color:#fff; margin:1rem 0 1rem;
}
.hero-text { position:relative; z-index:1; max-width:760px; color:#c1c1c7; font-size:1.02rem; line-height:1.9; }
.hero-actions { position:relative; z-index:1; display:flex; gap:1rem; flex-wrap:wrap; margin-top:2rem; }

.split-cards { margin:18px 0 46px; display:grid; grid-template-columns: 1.6fr 1fr; gap:1rem; }
.info-panel h2 {
  font-size: clamp(2rem, 4vw, 3.25rem); line-height:1.06; font-weight:900;
  letter-spacing:-0.03em; margin:1rem 0 1rem; position:relative; z-index:1;
}
.panel-text { color:#b8b8bf; line-height:1.9; position:relative; z-index:1; max-width:720px; }
.bullet-list { display:grid; gap:1rem; position:relative; z-index:1; margin-top:1rem; }
.bullet-list li { color:#ddd; display:flex; align-items:flex-start; gap:.8rem; line-height:1.6; }
.bullet-list li::before {
  content:""; flex:0 0 9px; width:9px; height:9px; margin-top:.55rem; border-radius:50%;
  background:var(--accent); box-shadow:0 0 18px rgba(255,36,56,.5);
}

.section { padding: 10px 0 72px; }
.section-head { display:flex; justify-content:space-between; align-items:end; gap:1rem; margin-bottom:1.25rem; }
.section-title { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 800; color:#fff; margin-bottom:.4rem; }
.section-text { max-width: 760px; color: var(--muted); line-height: 1.8; font-size: 1rem; }

.feature-card, .course-card, .auth-card, .stats-card, .table-panel, .lesson-panel {
  background: rgba(255,255,255,.03); border:1px solid rgba(255,255,255,.06); border-radius:20px;
  padding:1.35rem; box-shadow:0 10px 25px rgba(0,0,0,.18);
}
.feature-card:hover, .course-card:hover { border-color:rgba(255,36,56,.35); background:rgba(255,36,56,.06); transform:translateY(-4px); }
.feature-card, .course-card { transition:var(--transition); }

.card-number { display:block; margin-bottom:.45rem; font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }
.course-card { display:flex; flex-direction:column; gap:1rem; height:100%; }
.course-cover {
  min-height:210px; border-radius:18px; position:relative; overflow:hidden;
  background:
    linear-gradient(120deg, rgba(255,36,56,.12), rgba(255,255,255,.02)),
    radial-gradient(circle at top left, rgba(255,36,56,.2), transparent 30%),
    linear-gradient(160deg, #12131a, #0e0e14 45%, #141923 100%);
  border:1px solid rgba(255,255,255,.06);
}
.course-cover::after {
  content:""; position:absolute; inset:12% 8%;
  border-radius:22px 78px 18px 60px / 18px 48px 22px 40px;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(135deg, rgba(255,255,255,.05), rgba(255,255,255,.01));
}
.course-meta { display:flex; gap:.7rem; flex-wrap:wrap; }
.price-tag { font-size:1.4rem; font-weight:900; color:#fff; }
.course-title { font-size:1.32rem; font-weight:800; line-height:1.2; }
.course-desc { color:#b8b8bf; line-height:1.7; flex:1; }

.form-wrap { max-width:560px; margin:48px auto; }
.auth-card { padding:2rem; }
.auth-title { font-size:2rem; font-weight:900; margin-bottom:.6rem; }
.auth-subtitle { color:var(--muted); margin-bottom:1.35rem; line-height:1.8; }

.form-grid { display:grid; gap:1rem; }
label { display:grid; gap:.5rem; color:#fff; font-size:.88rem; font-weight:700; }
.input, textarea, select {
  width:100%; min-height:54px; padding:0 1rem; border-radius:16px;
  background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08); color:#fff; outline:none;
  transition:var(--transition);
}
textarea { min-height:140px; padding:1rem; resize:vertical; }
.input:focus, textarea:focus, select:focus {
  border-color: rgba(255,36,56,.45);
  box-shadow: 0 0 0 4px rgba(255,36,56,.12);
}
.input::placeholder, textarea::placeholder { color:#7f7f86; }

.flash {
  padding:1rem 1.1rem; border-radius:16px; margin-bottom:1rem; font-size:.95rem;
  border:1px solid rgba(255,255,255,.06);
}
.flash-success { background:rgba(36,195,107,.12); border-color:rgba(36,195,107,.2); color:#d9ffe8; }
.flash-error { background:rgba(255,77,97,.12); border-color:rgba(255,77,97,.22); color:#ffe5ea; }

.dashboard { padding:54px 0 72px; }
.dashboard-grid { display:grid; grid-template-columns: 280px 1fr; gap:1rem; }
.sidebar-card { position:sticky; top:110px; }
.sidebar-links { display:grid; gap:.55rem; margin-top:1rem; }
.sidebar-link {
  padding:.9rem 1rem; border-radius:16px; color:#d7d7dc; background:rgba(255,255,255,.02);
  border:1px solid transparent; transition:var(--transition);
}
.sidebar-link:hover, .sidebar-link.active {
  background:rgba(255,36,56,.08); border-color:rgba(255,36,56,.18); color:#fff;
}
.stats-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:1rem; margin-bottom:1rem; }
.stats-card strong { display:block; font-size:1.85rem; font-weight:900; margin-bottom:.25rem; }
.stats-card span { color:var(--muted); font-size:.96rem; }
.quick-panel { display:flex; justify-content:space-between; align-items:flex-start; gap:1rem; margin-bottom:1rem; }
.table-panel { overflow:auto; }
.table { width:100%; border-collapse:collapse; min-width:720px; }
.table th, .table td { text-align:left; padding:1rem .9rem; border-bottom:1px solid rgba(255,255,255,.06); vertical-align:top; }
.table th { font-size:.78rem; text-transform:uppercase; letter-spacing:.12em; color:var(--muted); }
.table td { color:#f3f3f5; }
.table tr:last-child td { border-bottom:none; }

.progress {
  width:100%; height:12px; border-radius:999px; background:rgba(255,255,255,.06);
  overflow:hidden; border:1px solid rgba(255,255,255,.05);
}
.progress > span {
  display:block; height:100%;
  background:linear-gradient(90deg, #ff3347, #d91528);
  box-shadow: 0 0 20px rgba(255,36,56,.25);
}

.lesson-layout { display:grid; grid-template-columns: 340px 1fr; gap:1rem; }
.lesson-video {
  min-height:360px; border-radius:24px; overflow:hidden; position:relative;
  background:
    linear-gradient(160deg, rgba(255,255,255,.04), rgba(255,255,255,.01)),
    radial-gradient(circle at top left, rgba(255,36,56,.22), transparent 22%),
    linear-gradient(160deg, #101116, #0c1017 55%, #151821 100%);
  border:1px solid rgba(255,255,255,.08);
  margin-bottom:1rem;
}
.lesson-video::after{
  content:"▶"; position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-size:4rem; color:rgba(255,255,255,.85); text-shadow:0 10px 30px rgba(0,0,0,.45);
}
.lesson-list { display:grid; gap:.75rem; margin-top:1rem; }
.lesson-item {
  padding:.95rem 1rem; border-radius:16px; background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
}
.lesson-item.active { border-color:rgba(255,36,56,.22); background:rgba(255,36,56,.08); }

.empty-state { text-align:center; color:var(--muted); padding:1.5rem 0; }

.site-footer {
  position:relative; z-index:1; border-top:1px solid #111118; padding:1.1rem 0;
  color:var(--muted); font-size:0.78rem; margin-top:auto;
}
.footer-inner {
  max-width:var(--max-width); margin:0 auto; padding:0 1.5rem; display:flex;
  align-items:center; justify-content:space-between; gap:1rem; flex-wrap:wrap;
}
.footer-links { display:flex; gap:1rem; flex-wrap:wrap; }

@media (max-width: 1080px) {
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .split-cards, .lesson-layout, .dashboard-grid { grid-template-columns:1fr; }
  .sidebar-card { position:static; }
}
@media (max-width: 900px) {
  .hero-panel, .panel { padding:30px 22px; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns:1fr; }
}
@media (max-width: 780px) {
  .nav { flex-direction:column; align-items:flex-start; }
  .nav-links { width:100%; justify-content:flex-start; }
  .hero-title { font-size:clamp(2rem, 10vw, 3.2rem); }
  .hero-text { font-size:0.96rem; line-height:1.8; }
  .hero-actions, .quick-panel { flex-direction:column; }
  .btn { width:100%; }
}
@media (max-width: 520px) {
  .nav { padding:0 1rem; }
  .site-container { padding:0 14px; }
  .hero-panel, .panel, .auth-card { border-radius:22px; padding:24px 16px; }
  .logo-main { font-size:0.92rem; letter-spacing:0.16em; }
  .logo-sub-top { font-size:0.64rem; }
  .logo-sub-bottom { font-size:0.58rem; }
  .nav-pill { font-size:0.72rem; padding:0.42rem 0.82rem; }
  .stats-grid { grid-template-columns:1fr; }
}