/* 
 * AISS Main CSS Design System
 * 
 * Includes: Design tokens, Reset, Typography, Layout Utilities,
 * Components (Buttons, Cards, Forms, Badges, Alerts, Navigation, etc.)
 */

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

:root {
  /* Colors - Primary */
  --color-primary: #005966;
  --color-primary-light: #007a8a;
  --color-primary-dark: #003d47;
  --color-primary-rgb: 0, 89, 102;
  
  /* Colors - Secondary */
  --color-secondary: #660066;
  --color-secondary-light: #880088;
  --color-secondary-dark: #440044;
  --color-secondary-rgb: 102, 0, 102;
  
  /* Colors - Accent */
  --color-accent: #00a8c0;
  
  /* Colors - Backgrounds & Surfaces */
  --color-bg: #FFFFFF;
  --color-surface: #F8FAFC;
  --color-surface-2: #EEF2F7;
  
  /* Colors - Text */
  --color-text: #1A2332;
  --color-text-muted: #6B7A8D;
  --color-text-light: #A0AAB2;
  --color-text-white: #FFFFFF;
  
  /* Colors - Borders */
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --color-border-dark: #CBD5E1;
  
  /* Colors - Status */
  --color-error: #DC2626;
  --color-error-bg: #FEF2F2;
  --color-error-border: #FCA5A5;
  
  --color-warning: #D97706;
  --color-warning-bg: #FFFBEB;
  --color-warning-border: #FCD34D;
  
  --color-success: #059669;
  --color-success-bg: #ECFDF5;
  --color-success-border: #6EE7B7;
  
  --color-info: #2563EB;
  --color-info-bg: #EFF6FF;
  --color-info-border: #93C5FD;
  
  /* Typography */
  --font-family-base: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-code: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  --font-size-5xl: 3rem;       /* 48px */
  --font-size-6xl: 3.75rem;    /* 60px */
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing */
  --spacing-0: 0;
  --spacing-1: 0.25rem;   /* 4px */
  --spacing-2: 0.5rem;    /* 8px */
  --spacing-3: 0.75rem;   /* 12px */
  --spacing-4: 1rem;      /* 16px */
  --spacing-5: 1.25rem;   /* 20px */
  --spacing-6: 1.5rem;    /* 24px */
  --spacing-8: 2rem;      /* 32px */
  --spacing-10: 2.5rem;   /* 40px */
  --spacing-12: 3rem;     /* 48px */
  --spacing-16: 4rem;     /* 64px */
  --spacing-20: 5rem;     /* 80px */
  --spacing-24: 6rem;     /* 96px */
  --spacing-32: 8rem;     /* 128px */
  
  /* Borders */
  --border-radius-sm: 0.25rem;   /* 4px */
  --border-radius-md: 0.5rem;    /* 8px */
  --border-radius-lg: 0.75rem;   /* 12px */
  --border-radius-xl: 1rem;      /* 16px */
  --border-radius-2xl: 1.5rem;   /* 24px */
  --border-radius-full: 9999px;
  
  /* Shadows */
  --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 15px -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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-primary: 0 10px 15px -3px rgba(0, 89, 102, 0.3), 0 4px 6px -2px rgba(0, 89, 102, 0.15);
  --shadow-secondary: 0 10px 15px -3px rgba(102, 0, 102, 0.3), 0 4px 6px -2px rgba(102, 0, 102, 0.15);
  
  /* Z-Index */
  --z-hide: -1;
  --z-base: 0;
  --z-docked: 10;
  --z-dropdown: 1000;
  --z-sticky: 1100;
  --z-banner: 1200;
  --z-overlay: 1300;
  --z-modal: 1400;
  --z-popover: 1500;
  --z-toast: 1600;
  --z-tooltip: 1700;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   CSS Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

a:hover {
  color: var(--color-primary-light);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, .h1, 
h2, .h2, 
h3, .h3, 
h4, .h4, 
h5, .h5, 
h6, .h6 {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
}

h1, .h1 { font-size: var(--font-size-5xl); letter-spacing: -0.025em; }
h2, .h2 { font-size: var(--font-size-4xl); letter-spacing: -0.025em; }
h3, .h3 { font-size: var(--font-size-3xl); letter-spacing: -0.015em; }
h4, .h4 { font-size: var(--font-size-2xl); letter-spacing: -0.01em; }
h5, .h5 { font-size: var(--font-size-xl); }
h6, .h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-4);
}

.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.small { font-size: var(--font-size-sm); }
.xs { font-size: var(--font-size-xs); }

.font-bold { font-weight: var(--font-weight-bold); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-normal { font-weight: var(--font-weight-normal); }

code {
  font-family: var(--font-family-code);
  font-size: var(--font-size-sm);
  background-color: var(--color-surface-2);
  padding: 0.2em 0.4em;
  border-radius: var(--border-radius-sm);
  color: var(--color-secondary);
}

/* ==========================================================================
   Layout Utilities
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.section {
  padding: var(--spacing-16) 0;
}

.section-lg {
  padding: var(--spacing-24) 0;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mt-12 { margin-top: var(--spacing-12); }

.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-12 { margin-bottom: var(--spacing-12); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-text-white);
  border: 1px solid transparent;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  box-shadow: var(--shadow-primary);
  color: var(--color-text-white);
  transform: translateY(-2px);
}

/* Secondary Button */
.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
  color: var(--color-text-white);
  border: 1px solid transparent;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--color-secondary-dark), var(--color-secondary));
  box-shadow: var(--shadow-secondary);
  color: var(--color-text-white);
  transform: translateY(-2px);
}

/* Outline Button */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-text-white);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background-color: var(--color-surface-2);
  color: var(--color-text);
}

/* Sizes */
.btn-sm {
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-sm);
}

.btn-lg {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-lg);
  border-radius: var(--border-radius-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

.card-gradient {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-text-white);
  border: none;
}

.card-header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.card-body {
  padding: var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-clip: padding-box;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: 0;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 89, 102, 0.1);
}

.form-control::placeholder {
  color: var(--color-text-light);
  opacity: 1;
}

.form-control:disabled, .form-control[readonly] {
  background-color: var(--color-surface);
  opacity: 1;
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

.form-error {
  display: block;
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.has-error .form-control {
  border-color: var(--color-error);
}

.has-error .form-control:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Custom Checkbox & Radio */
.custom-control {
  position: relative;
  display: flex;
  align-items: flex-start;
  min-height: 1.5rem;
  padding-left: 1.75rem;
  margin-bottom: var(--spacing-2);
}

.custom-control-input {
  position: absolute;
  z-index: -1;
  opacity: 0;
}

.custom-control-label {
  position: relative;
  margin-bottom: 0;
  vertical-align: top;
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.custom-control-label::before {
  position: absolute;
  top: 0.1rem;
  left: -1.75rem;
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  pointer-events: none;
  content: "";
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.custom-control-label::after {
  position: absolute;
  top: 0.1rem;
  left: -1.75rem;
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  content: "";
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 60%;
}

/* Checkbox specific */
.custom-checkbox .custom-control-label::before {
  border-radius: var(--border-radius-sm);
}

.custom-checkbox .custom-control-input:checked ~ .custom-control-label::before {
  color: #fff;
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.custom-checkbox .custom-control-input:checked ~ .custom-control-label::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e");
}

/* Radio specific */
.custom-radio .custom-control-label::before {
  border-radius: 50%;
}

.custom-radio .custom-control-input:checked ~ .custom-control-label::before {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.custom-radio .custom-control-input:checked ~ .custom-control-label::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='2' fill='%23fff'/%3e%3c/svg%3e");
}

/* ==========================================================================
   Badges
   ========================================================================== */
.badge {
  display: inline-block;
  padding: 0.25em 0.6em;
  font-size: 75%;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: var(--border-radius-full);
}

.badge-primary { background-color: var(--color-primary-light); color: #fff; }
.badge-secondary { background-color: var(--color-secondary-light); color: #fff; }
.badge-success { background-color: var(--color-success-bg); color: var(--color-success); border: 1px solid var(--color-success-border); }
.badge-warning { background-color: var(--color-warning-bg); color: var(--color-warning); border: 1px solid var(--color-warning-border); }
.badge-error { background-color: var(--color-error-bg); color: var(--color-error); border: 1px solid var(--color-error-border); }
.badge-info { background-color: var(--color-info-bg); color: var(--color-info); border: 1px solid var(--color-info-border); }

/* ==========================================================================
   Alerts
   ========================================================================== */
.alert {
  position: relative;
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  border: 1px solid transparent;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
}

.alert-icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
}

.alert-content {
  flex-grow: 1;
}

.alert-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.alert-info { background-color: var(--color-info-bg); border-color: var(--color-info-border); color: #1e40af; }
.alert-success { background-color: var(--color-success-bg); border-color: var(--color-success-border); color: #065f46; }
.alert-warning { background-color: var(--color-warning-bg); border-color: var(--color-warning-border); color: #92400e; }
.alert-error { background-color: var(--color-error-bg); border-color: var(--color-error-border); color: #991b1b; }

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem; /* 64px */
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-dark);
  text-decoration: none;
}

.navbar-brand-logo {
  height: 2rem;
  margin-right: var(--spacing-2);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.nav-link {
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  padding-top: 8rem;
  padding-bottom: 6rem;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-surface) 0%, #FFFFFF 100%);
}

.hero-bg-anim {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0,89,102,0.03) 0%, rgba(255,255,255,0) 70%);
  animation: spin 60s linear infinite;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-6);
  background: linear-gradient(to right, var(--color-primary-dark), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
}

/* Floating Elements */
.floating-shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
  z-index: 0;
}

.shape-1 { width: 300px; height: 300px; top: -100px; right: -100px; animation-delay: 0s; }
.shape-2 { width: 200px; height: 200px; bottom: 100px; left: -50px; animation-delay: 2s; background: linear-gradient(135deg, var(--color-secondary-light), var(--color-secondary)); }
.shape-3 { width: 150px; height: 150px; top: 200px; right: 20%; animation-delay: 4s; }

/* ==========================================================================
   Feature Cards
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-8) var(--spacing-6);
}

.feature-icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  border-radius: var(--border-radius-full);
  background: linear-gradient(135deg, rgba(0,89,102,0.1), rgba(0,168,192,0.1));
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-6);
  transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon-wrapper {
  transform: scale(1.1);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.feature-desc {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Pricing Cards
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
  align-items: center;
}

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-2xl);
  padding: var(--spacing-8);
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.pricing-card.pricing-featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.05);
  z-index: 1;
}

.pricing-card.pricing-featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--spacing-6);
  padding-bottom: var(--spacing-6);
  border-bottom: 1px solid var(--color-border);
}

.pricing-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-4);
}

.pricing-price {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-text);
}

.pricing-period {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-normal);
}

.pricing-features {
  margin-bottom: var(--spacing-8);
}

.pricing-feature {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-3);
  color: var(--color-text);
}

.pricing-feature svg {
  color: var(--color-success);
  margin-right: var(--spacing-3);
  flex-shrink: 0;
}

.pricing-feature.disabled {
  color: var(--color-text-light);
  text-decoration: line-through;
}

.pricing-feature.disabled svg {
  color: var(--color-text-light);
}

/* ==========================================================================
   Auth & Forms
   ========================================================================== */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
  padding: var(--spacing-4);
}

.auth-card {
  width: 100%;
  max-width: 450px;
  padding: var(--spacing-8);
}

.contact-form-wrapper {
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-white);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.footer-brand {
  margin-bottom: var(--spacing-4);
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--line-height-relaxed);
  max-width: 300px;
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-6);
  color: var(--color-text-white);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-text-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

.animate-on-scroll {
  opacity: 0;
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
/* 1024px / Laptops */
@media (max-width: 1024px) {
  .hero-title { font-size: var(--font-size-4xl); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-6); }
  .pricing-card.pricing-featured { transform: none; }
  .pricing-card.pricing-featured:hover { transform: translateY(-8px); }
}

/* 768px / Tablets */
@media (max-width: 768px) {
  .navbar-nav {
    display: none;
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    background-color: #fff;
    flex-direction: column;
    padding: var(--spacing-4);
    box-shadow: var(--shadow-md);
  }
  .navbar-nav.show { display: flex; }
  .navbar-toggle { display: block; }
  
  .hero-title { font-size: var(--font-size-3xl); }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 480px / Mobile */
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--spacing-4); text-align: center; }
  
  .auth-card { padding: var(--spacing-6) var(--spacing-4); }
}