/* ==========================================
   AULAINFINITY - Responsive Styles
   ========================================== */

/* Root Variables */
:root {
  --color-primary: #667eea;
  --color-secondary: #764ba2;
  --color-dark: #1a1a2e;
  --color-light: #f5f7fa;
  --color-white: #ffffff;
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-border: #e0e0e0;
  --color-success: #28a745;
  --color-error: #dc3545;
  --color-warning: #ffc107;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* ==========================================
   GLOBAL STYLES
   ========================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* ==========================================
   NAVIGATION
   ========================================== */

nav {
  position: sticky;
  top: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 50;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.navbar-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.navbar-menu {
  display: none;
  gap: var(--spacing-lg);
  list-style: none;
}

.navbar-menu a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: var(--spacing-xs) var(--spacing-sm);
}

.navbar-menu a:hover,
.navbar-menu a:focus {
  color: var(--color-primary);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Desktop Navigation */
@media (min-width: 768px) {
  .navbar-menu {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }
}

/* ==========================================
   SECTIONS
   ========================================== */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

section {
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

section:last-of-type {
  border-bottom: none;
}

section h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

section h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

/* ==========================================
   FEATURES GRID
   ========================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.feature-card {
  background: var(--color-light);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 2px solid transparent;
  transition: var(--transition);
  cursor: pointer;
}

.feature-card:hover,
.feature-card:focus-within {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.feature-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

.feature-card p {
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ==========================================
   BUTTONS & FORMS
   ========================================== */

button,
.button,
input[type="submit"],
input[type="reset"] {
  font-family: inherit;
  font-size: var(--font-size-base);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  display: inline-block;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}

.button-primary,
button:not(.button-secondary):not(.button-tertiary),
input[type="submit"] {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
}

.button-primary:hover,
button:not(.button-secondary):not(.button-tertiary):hover,
input[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.button-primary:focus,
button:not(.button-secondary):not(.button-tertiary):focus,
input[type="submit"]:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.button-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.button-secondary:hover,
.button-secondary:focus {
  background: var(--color-primary);
  color: var(--color-white);
}

.button-tertiary {
  background: transparent;
  color: var(--color-text-muted);
  text-decoration: underline;
  padding: 0;
}

.button-tertiary:hover,
.button-tertiary:focus {
  color: var(--color-primary);
}

form {
  max-width: 500px;
  margin: var(--spacing-lg) 0;
}

.form-group {
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

label {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

input[type="email"],
input[type="text"],
input[type="tel"],
textarea,
select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: var(--transition);
}

input[type="email"]:focus,
input[type="text"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form-success {
  background: #d4edda;
  color: #155724;
  padding: var(--spacing-md);
  border-radius: 8px;
  margin-bottom: var(--spacing-lg);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   MODALS
   ========================================== */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--color-white);
  border-radius: 12px;
  padding: var(--spacing-lg);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  animation: slideUp 0.3s ease-out;
}

.modal-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover,
.modal-close:focus {
  color: var(--color-text);
}

/* ==========================================
   PROGRESS & STATS
   ========================================== */

.progress-bar {
  background: var(--color-light);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  margin: var(--spacing-md) 0;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  width: 85%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { width: 85%; }
  50% { width: 92%; }
}

/* ==========================================
   FOOTER
   ========================================== */

footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: var(--spacing-xs) 0;
}

.footer-section a:hover,
.footer-section a:focus {
  color: var(--color-white);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

/* ==========================================
   COOKIE CONSENT BANNER
   ========================================== */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-lg);
  z-index: 999;
  display: none;
  flex-direction: column;
  gap: var(--spacing-md);
  animation: slideUp 0.3s ease-out;
}

.cookie-banner.show {
  display: flex;
}

.cookie-text {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  max-width: 1200px;
  margin: 0 auto;
}

.cookie-text a {
  color: var(--color-primary);
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
}

.cookie-actions button {
  padding: var(--spacing-sm) var(--spacing-lg);
}

.cookie-accept {
  background: var(--color-primary);
  color: var(--color-white);
}

.cookie-accept:hover {
  background: var(--color-secondary);
}

.cookie-reject {
  background: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-white);
}

.cookie-reject:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ==========================================
   ACCESSIBILITY & UTILITIES
   ========================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.focus-visible:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: more) {
  :root {
    --color-primary: #5568d3;
    --color-secondary: #6b3b9a;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 480px) {
  :root {
    --font-size-2xl: 1.75rem;
    --font-size-xl: 1.25rem;
    --spacing-2xl: 2.5rem;
    --spacing-xl: 1.5rem;
  }

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

  .hero-actions {
    gap: var(--spacing-sm);
  }

  .button,
  button {
    width: 100%;
  }

  .cookie-actions {
    flex-direction: column;
  }

  .cookie-actions button {
    width: 100%;
  }
}

@media (min-width: 768px) {
  main {
    padding: 0 var(--spacing-xl);
  }

  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================
   UTILITY CLASSES FOR LEGAL PAGES
   ========================================== */

.legal-main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 var(--spacing-lg);
}

.legal-content ul {
  margin-left: 1.5rem;
  line-height: 1.8;
}

.legal-footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-lg);
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.legal-footer a {
  color: var(--color-primary);
  text-decoration: none;
}

.legal-footer a:hover,
.legal-footer a:focus {
  text-decoration: underline;
}

.legal-divider {
  margin: var(--spacing-2xl) 0;
}

.legal-footer-note {
  text-align: center;
  color: #666;
  font-size: var(--font-size-sm);
}

.form-success {
  display: none;
  background: var(--color-success);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  margin-bottom: var(--spacing-md);
}

.form-success.show {
  display: block;
}

.section-subheading {
  margin-top: var(--spacing-2xl);
}

.roadmap-grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.progress-bar {
  margin-top: var(--spacing-sm);
}

.progress-fill {
  width: 0;
}

.progress-fill[data-width="100"] {
  width: 100%;
}

.progress-fill[data-width="75"] {
  width: 75%;
}

.progress-fill[data-width="50"] {
  width: 50%;
}

.progress-fill[data-width="25"] {
  width: 25%;
}