/* ============================================
   CSS DESIGN SYSTEM - SummaTech Payments
   ============================================ */

/* CSS Variables (Design Tokens) */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-card: rgba(26, 26, 37, 0.7);
  --bg-card-hover: rgba(35, 35, 50, 0.8);

  /* Accent Colors */
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #a78bfa;
  --accent-gradient: linear-gradient(
    135deg,
    #6366f1 0%,
    #8b5cf6 50%,
    #a78bfa 100%
  );
  --accent-glow: rgba(99, 102, 241, 0.5);

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --text-muted: #52525b;

  /* Status Colors */
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --error: #ef4444;

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(99, 102, 241, 0.5);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.3);

  /* Typography */
  --font-family:
    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-Index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 1000;
  --z-toast: 2000;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
}

/* ============================================
   ANIMATED BACKGROUND
   ============================================ */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    var(--accent-primary) 0%,
    transparent 70%
  );
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(
    circle,
    var(--accent-secondary) 0%,
    transparent 70%
  );
  bottom: -150px;
  left: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    var(--accent-tertiary) 0%,
    transparent 70%
  );
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(50px, -50px) scale(1.1);
  }
  50% {
    transform: translate(-30px, 30px) scale(0.95);
  }
  75% {
    transform: translate(-50px, -30px) scale(1.05);
  }
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--spacing-md) var(--spacing-xl);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon svg {
  width: 40px;
  height: 40px;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  z-index: var(--z-base);
  padding: 180px var(--spacing-xl) var(--spacing-3xl);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--success-bg);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--success);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease;
}

.badge-icon {
  font-size: var(--font-size-base);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, var(--font-size-5xl));
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease 0.1s backwards;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
  animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
  padding: var(--spacing-lg) var(--spacing-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
  animation: fadeInUp 0.6s ease 0.3s backwards;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing-section {
  position: relative;
  z-index: var(--z-base);
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--spacing-xl);
}

/* Billing Toggle */
.billing-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.toggle-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.toggle-label.active {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.save-badge {
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px 8px;
  background: var(--success-bg);
  color: var(--success);
  border-radius: var(--radius-full);
}

.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.toggle-slider::before {
  position: absolute;
  content: '';
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: var(--accent-gradient);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(22px);
}

/* Pricing Cards Container */
.pricing-container {
  max-width: 1280px;
  margin: 0 auto;
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  justify-items: center;
}

/* Loading State */
.loading-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-3xl);
  color: var(--text-secondary);
}

.loader {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Pricing Card */
.pricing-card {
  position: relative;
  width: 100%;
  max-width: 380px;
  padding: var(--spacing-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  animation: fadeInUp 0.6s ease backwards;
}

.pricing-card:nth-child(1) {
  animation-delay: 0.1s;
}
.pricing-card:nth-child(2) {
  animation-delay: 0.2s;
}
.pricing-card:nth-child(3) {
  animation-delay: 0.3s;
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.pricing-card.popular::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-xs) var(--spacing-lg);
  background: var(--accent-gradient);
  color: var(--text-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.card-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.plan-name {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.plan-description {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.price-container {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--spacing-xs);
  margin: var(--spacing-lg) 0;
}

.currency {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-secondary);
}

.price {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.period {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.card-features {
  list-style: none;
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.card-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.card-features li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--success);
}

.buy-button {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.buy-button:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

.buy-button.primary {
  background: var(--accent-gradient);
  border: none;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.buy-button.primary:hover {
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

.buy-button svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.buy-button:hover svg {
  transform: translateX(4px);
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features-section {
  max-width: 1280px;
  margin: var(--spacing-3xl) auto 0;
  padding-top: var(--spacing-3xl);
  border-top: 1px solid var(--border-color);
}

.features-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--text-primary);
}

.feature-card h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 480px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  transform: translateY(20px) scale(0.95);
  transition: all var(--transition-base);
}

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

.modal-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.modal-close svg {
  width: 18px;
  height: 18px;
}

.modal-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
}

.modal-icon svg {
  width: 32px;
  height: 32px;
  color: var(--text-primary);
}

.modal-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.modal-header p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.modal-body {
  margin-bottom: var(--spacing-xl);
}

.customer-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input {
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.order-summary {
  padding: var(--spacing-lg);
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
}

.order-summary h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  padding: var(--spacing-sm) 0;
}

.summary-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-sm) 0;
}

.summary-row.total {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.modal-footer {
  text-align: center;
}

.checkout-button {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  background: var(--accent-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  margin-bottom: var(--spacing-md);
}

.checkout-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
}

.checkout-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.checkout-button .btn-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.checkout-button:hover .btn-arrow {
  transform: translateX(4px);
}

.checkout-button .btn-loader {
  display: none;
}

.checkout-button .btn-loader.visible {
  display: flex;
}

.checkout-button .btn-text.hidden {
  display: none;
}

.checkout-button .btn-arrow.hidden {
  display: none;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.secure-notice {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.secure-notice svg {
  width: 14px;
  height: 14px;
}

/* ============================================
   TOAST
   ============================================ */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: var(--z-toast);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: translateX(calc(100% + var(--spacing-xl)));
  opacity: 0;
  transition: all var(--transition-base);
}

.toast.visible {
  transform: translateX(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--success);
}

.toast.error {
  border-color: var(--error);
}

.toast-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.toast-icon {
  font-size: var(--font-size-lg);
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  position: relative;
  z-index: var(--z-base);
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-3xl) var(--spacing-xl) var(--spacing-xl);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand p {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  max-width: 280px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.footer-column h5 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer-column a {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-xl);
}

.footer-legal a {
  color: var(--text-tertiary);
}

.footer-legal a:hover {
  color: var(--text-primary);
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */
@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .navbar {
    padding: var(--spacing-md);
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding: 140px var(--spacing-md) var(--spacing-2xl);
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
  }

  .stat-divider {
    width: 60px;
    height: 1px;
  }

  .pricing-section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .pricing-cards {
    grid-template-columns: 1fr;
  }

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

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .modal {
    padding: var(--spacing-md);
  }

  .modal-content {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .billing-toggle {
    flex-wrap: wrap;
    justify-content: center;
  }

  .toggle-label {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .price {
    font-size: 2.5rem;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}

/* Hidden utility class */
.hidden {
  display: none !important;
}