* {
  box-sizing: border-box;
}

:root {
  --bg: #0f0f12;
  --panel: #18181d;
  --panel-2: #202028;
  --text: #f5f5f5;
  --muted: #b8b8c2;
  --primary: #800020;
  --primary-soft: rgba(128, 0, 32, 0.18);
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
  --radius: 20px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top, rgba(128, 0, 32, 0.28), transparent 32%),
    linear-gradient(180deg, #111116 0%, #0b0b0e 100%);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 15, 18, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #800020, #4d0013);
  font-weight: 700;
  color: #fff;
  box-shadow: var(--shadow);
}

.brand h1 {
  margin: 0;
  font-size: 1.15rem;
}

.brand p {
  margin: 2px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text);
  font-size: 0.95rem;
}

.nav a:hover {
  color: #ffd6df;
}

.main-content {
  padding: 26px 0 56px;
}

.hero {
  padding: 18px 0 10px;
}

.hero-box,
.card,
.info-block,
.search-form,
.page-head,
.exercise-detail {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.hero-box {
  padding: 28px 22px;
  background:
    linear-gradient(180deg, rgba(128, 0, 32, 0.18), rgba(255, 255, 255, 0.03));
}

.badge {
  display: inline-block;
  margin-bottom: 14px;
  background: var(--primary-soft);
  border: 1px solid rgba(128, 0, 32, 0.45);
  color: #ffd9e3;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.84rem;
}

.hero-box h2 {
  margin: 0 0 12px;
  font-size: 2rem;
  line-height: 1.05;
}

.hero-box p {
  margin: 0;
  color: #c6c6cf;
  max-width: 760px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 14px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-secondary {
  background: #2a2a33;
  color: #fff;
  border: 1px solid var(--border);
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 20px 0 10px;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.card p,
.page-head p,
.info-block p {
  color: var(--muted);
}

.section-title {
  margin: 28px 0 14px;
  font-size: 1.3rem;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0 36px;
  color: var(--muted);
}

.search-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 20px 0;
}

.search-form input {
  flex: 1;
  min-width: 240px;
  background: #121217;
  border: 1px solid var(--border);
  color: white;
  padding: 12px 14px;
  border-radius: 12px;
}

.exercise-thumb,
.exercise-main-image {
  width: 100%;
  border-radius: 14px;
  margin-bottom: 14px;
  object-fit: cover;
  background: #111;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.detail-block {
  margin-top: 18px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
}

.detail-block h3 {
  margin-top: 0;
}

.list-clean {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.list-clean li + li {
  margin-top: 8px;
}

@media (min-width: 768px) {
  .hero-box {
    padding: 34px 28px;
  }

  .hero-box h2 {
    font-size: 2.8rem;
  }

  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}