:root {
  color-scheme: dark;
  color: #eeeeee;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #070707;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(229, 9, 20, 0.18), transparent 22%),
    linear-gradient(180deg, #0d0d0d 0%, #060606 100%);
}

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

button {
  font: inherit;
  cursor: pointer;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: rgba(10, 10, 10, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.brand {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #e50914;
}

.nav-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.nav-links a {
  color: #e7e7e7;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.profile-menu {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: rgba(20, 20, 20, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  min-width: 160px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  color: #eee;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.profile-menu:hover .dropdown-content {
  display: block;
}

.button {
  border: none;
  padding: 12px 22px;
  border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: #e50914;
  color: #fff;
  box-shadow: 0 18px 40px rgba(229, 9, 20, 0.18);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero {
  display: grid;
  grid-template-columns: 1.7fr 1.3fr;
  gap: 44px;
  align-items: center;
  padding: 88px 32px 56px;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 1.02;
  margin: 0 0 18px;
}

.hero-content p {
  max-width: 680px;
  color: #b3b3b3;
  font-size: 1.05rem;
  margin-bottom: 28px;
}

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

.hero-image {
  display: flex;
  justify-content: center;
}

.video-box {
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), #090909);
  border: 1px solid rgba(255, 255, 255, 0.06);
  max-width: 520px;
  width: 100%;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
}

.video-label {
  padding: 18px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  background: rgba(0, 0, 0, 0.35);
}

.video-box img {
  display: block;
  width: 100%;
  height: auto;
}

.section {
  padding: 42px 32px 58px;
}

.section-dark {
  background: rgba(10, 10, 10, 0.96);
}

.section-header h2 {
  font-size: 2.4rem;
  margin: 0 0 10px;
}

.section-header p {
  margin: 0;
  color: #b8b8b8;
}

.search-container {
  display: flex;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.search-container input,
.search-container select {
  padding: 12px 16px;
  background: rgba(20, 20, 20, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  color: #eee;
  font-size: 1rem;
}

.search-container input {
  flex: 1;
  min-width: 200px;
}

.search-container select {
  min-width: 150px;
}

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: 28px;
}

.course-card,
.plan-card,
.profile-card {
  background: rgba(20, 20, 20, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  padding: 22px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.course-card img {
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  height: 180px;
  margin-bottom: 18px;
}

.course-card h3,
.plan-card h3,
.profile-card h3 {
  margin: 0 0 12px;
  font-size: 1.35rem;
}

.course-card p,
.plan-card p,
.profile-card p {
  color: #c6c6c6;
  margin: 0 0 12px;
}

.course-card .tag,
.plan-card .plan-price,
.profile-card strong {
  display: inline-block;
  margin-bottom: 16px;
  font-weight: 700;
  color: #e50914;
}

.course-card .course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.course-card .course-meta span {
  font-size: 0.9rem;
  color: #888;
}

.plan-card ul,
.profile-progress ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.plan-card ul li,
.profile-progress li {
  margin-bottom: 10px;
  color: #d0d0d0;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
  margin-top: 28px;
}

.plan-card-free {
  border-color: rgba(255, 255, 255, 0.12);
}

.plan-card-basic {
  border-color: #e50914;
}

.plan-card-premium {
  border-color: #ffd700;
}

.plan-badge {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(229, 9, 20, 0.18);
  color: #fff;
  font-size: 0.82rem;
  margin-bottom: 14px;
}

.plan-price {
  font-size: 2rem;
  margin: 0 0 18px;
}

.profile-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 28px;
}

.profile-progress {
  min-height: 260px;
}

.progress-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.progress-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #e50914, #ff6a5c);
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,0.7);
  padding: 32px;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: #111;
  border-radius: 24px;
  padding: 28px;
  width: min(640px, 100%);
  border: 1px solid rgba(255,255,255,0.08);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: none;
  color: #fff;
  font-size: 1.4rem;
}

.modal-body {
  display: grid;
  gap: 18px;
}

.form-group {
  display: grid;
  gap: 8px;
}

.form-group label {
  font-size: 0.95rem;
  color: #ccc;
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  background: #141414;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  color: #eee;
}

.form-group input::placeholder {
  color: #777;
}

.modal-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.video-overlay {
  position: relative;
}

.video-overlay iframe {
  width: 100%;
  height: 360px;
  border: none;
  border-radius: 18px;
}

.certificate {
  text-align: center;
  padding: 20px;
  border: 2px solid #e50914;
  border-radius: 18px;
  background: rgba(229, 9, 20, 0.1);
  margin-bottom: 20px;
}

.certificate h3 {
  color: #e50914;
  margin-bottom: 10px;
}

.certificate h4 {
  color: #fff;
  margin: 10px 0;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 60px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

@media (max-width: 700px) {
  .hero-content h1 {
    font-size: 2.4rem;
  }

  .hero {
    padding: 44px 18px 36px;
  }

  .section {
    padding: 32px 18px 46px;
  }
}