/* ============================================================================
   STAR EDUKASI - MODERN DESIGN SYSTEM & STYLESHEET
   ============================================================================ */

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --secondary: #06b6d4;
  --accent: #f59e0b;
  --dark: #0f172a;
  --dark-surface: #1e293b;
  --light: #f8fafc;
  --white: #ffffff;
  --text-main: #334155;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 28px rgba(79, 70, 229, 0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--light);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ================= CONTAINER & UTILS ================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
}

.badge-accent {
  background: rgba(245, 158, 11, 0.15);
  color: #b45309;
  border-color: rgba(245, 158, 11, 0.3);
}

/* ================= BUTTONS ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #3b82f6);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--dark);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* ================= NAVBAR ================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  transition: var(--transition);
  padding: 1rem 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--dark);
  text-decoration: none;
}

.nav-brand i {
  color: var(--primary);
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--dark);
  cursor: pointer;
}

/* ================= HERO SECTION ================= */
.hero {
  padding: 8.5rem 0 5rem;
  background: radial-gradient(circle at top right, rgba(6, 182, 212, 0.12), transparent 50%),
              radial-gradient(circle at bottom left, rgba(79, 70, 229, 0.12), transparent 50%);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.1rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 1rem 0 1.2rem;
  color: var(--dark);
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image-wrapper {
  position: relative;
}

.hero-image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  display: block;
}

.floating-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border: 1px solid var(--border);
}

.floating-card i {
  font-size: 2rem;
  color: var(--accent);
}

/* ================= SECTION COMMON ================= */
.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--dark);
  margin-top: 0.5rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ================= KEUNGGULAN ================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--dark);
}

/* ================= PROGRAM KURSUS ================= */
.programs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.2rem;
}

.program-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.program-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.program-img-wrapper {
  position: relative;
  height: 200px;
}

.program-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.program-badge {
  position: absolute;
  top: 12px;
  right: 12px;
}

.program-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.program-cat {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--secondary);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.program-body h3 {
  font-size: 1.3rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.program-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.2rem;
  flex: 1;
}

.program-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.price-box {
  display: flex;
  flex-direction: column;
}

.price-main {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
}

.price-strike {
  font-size: 0.85rem;
  text-decoration: line-through;
  color: var(--text-muted);
}

/* ================= TESTIMONI ================= */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.stars {
  color: var(--accent);
  margin-bottom: 1rem;
}

.testimonial-text {
  font-style: italic;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.user-info img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.user-details h4 {
  font-size: 1rem;
  color: var(--dark);
}

.user-details span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ================= FAQ ================= */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

/* ================= MODAL REGISTRATION ================= */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-content {
  background: var(--white);
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  position: relative;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.3s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

.close-modal {
  position: absolute;
  top: 18px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--dark);
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

/* ================= FOOTER ================= */
.footer {
  background: var(--dark);
  color: #94a3b8;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer h4 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid #1e293b;
  padding-top: 2rem;
  font-size: 0.9rem;
}

/* ================= RESPONSIVE ================= */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 2.4rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .floating-card {
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}