@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #0F172A;
  --primary-light: #1E293B;
  --accent: #3B82F6; /* Premium Blue */
  --accent-glow: rgba(59, 130, 246, 0.5);
  --success: #10B981;
  --bg-color: #F8FAFC;
  --surface: #FFFFFF;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --border: #E2E8F0;
  
  --font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.5);
}

body.dark-mode {
  --primary: #FFFFFF;
  --primary-light: #F8FAFC;
  --accent: #60A5FA;
  --accent-glow: rgba(96, 165, 250, 0.3);
  --bg-color: #0B0F19;
  --surface: #111827;
  --text-main: #F1F5F9;
  --text-muted: #94A3B8;
  --border: #1F2937;
  --glass-bg: rgba(17, 24, 39, 0.8);
  --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Luxury Hero Section */
.hero {
  position: relative;
  padding: 120px 20px 80px;
  background: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -10%; width: 50%; height: 100%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
  transform: rotate(-45deg);
}

.hero::after {
  content: '';
  position: absolute;
  top: -20%; right: -10%; width: 40%; height: 100%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.03) 0%, transparent 60%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  animation: slideDown 0.6s ease-out;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--primary);
  animation: slideUp 0.8s ease-out forwards;
  opacity: 0;
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 48px;
  font-weight: 400;
  animation: slideUp 0.8s ease-out 0.2s forwards;
  opacity: 0;
}

/* Premium Search */
.search-container {
  max-width: 650px;
  margin: 0 auto;
  position: relative;
  animation: slideUp 0.8s ease-out 0.4s forwards;
  opacity: 0;
  z-index: 10;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--surface);
  border-radius: 20px;
  padding: 8px 8px 8px 24px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-input-wrapper:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow), var(--shadow-lg);
  transform: translateY(-2px);
}

.search-icon {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-right: 12px;
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1.125rem;
  color: var(--text-main);
  outline: none;
  font-family: inherit;
}

.search-input::placeholder { color: var(--text-muted); opacity: 0.7; }

.search-button {
  background: var(--primary);
  color: #FFFFFF;
  padding: 16px 32px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.search-button:hover {
  background: var(--accent);
  box-shadow: 0 4px 12px var(--accent-glow);
}

/* Trust Indicators */
.trust-indicators {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 60px;
  animation: fadeIn 1s ease-out 0.8s forwards;
  opacity: 0;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.trust-item i { color: var(--success); font-size: 1.25rem; }

/* Grid Layout */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 100px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-top: 8px;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  animation: slideUp 0.8s ease-out 0.6s forwards;
  opacity: 0;
}
.tab-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 10px 24px;
  border-radius: 99px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}
.tab-btn:hover {
  border-color: var(--accent);
  color: var(--primary);
  transform: translateY(-2px);
}
.tab-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(15,23,42,0.15);
}

.packages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
}

/* Luxury Package Card */
.package-card {
  background: var(--surface);
  border-radius: 24px;
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.package-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--accent), #8B5CF6);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.package-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(59, 130, 246, 0.2);
}

.package-card:hover::before { opacity: 1; }

.badge-popular {
  position: absolute;
  top: 24px;
  right: 24px;
  background: linear-gradient(135deg, #F59E0B, #D97706);
  color: white;
  padding: 6px 12px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.3);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.country-flag {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border: 2px solid var(--surface);
}

.country-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.card-body {
  flex: 1;
  margin-bottom: 32px;
}

.data-amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.data-amount span {
  font-size: 1.25rem;
  color: var(--text-muted);
  font-weight: 600;
}

.features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

.feature-item i {
  color: var(--accent);
  font-size: 1.1rem;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

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

.price-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.price {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
}

.btn-buy {
  background: var(--surface);
  color: var(--primary);
  border: 2px solid var(--border);
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.package-card:hover .btn-buy {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

/* Animations */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Modal Checkout Premium */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface);
  width: 100%;
  max-width: 480px;
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95) translateY(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--border);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.btn-close {
  background: var(--bg-color);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-close:hover {
  background: var(--border);
  color: var(--primary);
  transform: rotate(90deg);
}

.checkout-summary {
  background: var(--bg-color);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 32px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 1rem;
}

.summary-row:last-child { margin-bottom: 0; }
.summary-label { color: var(--text-muted); font-weight: 500; }
.summary-value { color: var(--primary); font-weight: 600; }

.summary-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 2px dashed var(--border);
  margin-top: 24px;
}

.total-label { font-size: 1.125rem; font-weight: 600; color: var(--primary); }
.total-value { font-size: 2rem; font-weight: 800; color: var(--accent); }

.btn-checkout {
  width: 100%;
  background: var(--primary);
  color: white;
  padding: 18px;
  border-radius: 16px;
  font-size: 1.125rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  transition: all 0.3s ease;
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.15);
}

.btn-checkout:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 25px var(--accent-glow);
}

.btn-checkout:active { transform: translateY(0); }

.secure-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.secure-badge i { color: var(--success); }

/* Responsive */
@media (max-width: 768px) {
  .hero { padding: 80px 20px 60px; }
  .search-input-wrapper { flex-direction: column; background: transparent; box-shadow: none; padding: 0; border: none; }
  .search-input { width: 100%; background: var(--surface); padding: 16px 24px 16px 50px; border-radius: 16px; border: 1px solid var(--border); margin-bottom: 16px; box-shadow: var(--shadow-md); }
  .search-icon { position: absolute; left: 18px; top: 18px; z-index: 2; }
  .search-button { width: 100%; border-radius: 16px; padding: 16px; }
  .trust-indicators { flex-direction: column; align-items: center; gap: 16px; margin-top: 40px; }
  .modal { padding: 24px; }
}