/* ============================================
   Makarios - Design System
   ============================================ */

:root {
  /* Colors - Light Mode */
  --color-bg: #ffffff;
  --color-surface: #f8f9fa;
  --color-surface-elevated: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;
  --color-border: #e5e7eb;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-accent: #7c3aed;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Layout */
  --container-max: 1200px;
  --header-height: 72px;
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-elevated: #334155;
  --color-text: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-border: #334155;
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-primary-light: #1e3a8a;
  --color-success: #22c55e;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  --color-accent: #a78bfa;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-base), color var(--transition-base);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }

/* ============================================
   Layout
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* ============================================
   Header
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  background-color: rgba(248, 249, 250, 0.8);
  transition: all var(--transition-base);
}

[data-theme="dark"] .header {
  background-color: rgba(15, 23, 42, 0.8);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-xl);
}

.logo svg {
  width: 140px;
  height: auto;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  font-family: inherit;
}

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

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

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--color-text);
  font-size: var(--text-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: var(--color-error);
}

.form-error {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-error);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.form-checkbox input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* ============================================
   Cards
   ============================================ */

.card {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.card-body {
  color: var(--color-text-secondary);
}

/* ============================================
   Badges
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.badge-success {
  background-color: #d1fae5;
  color: var(--color-success);
  border-color: var(--color-success);
}

[data-theme="dark"] .badge-success {
  background-color: #065f46;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
}

.hero-title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Feature Grid
   ============================================ */

.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.feature-card {
  text-align: left;
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

/* ============================================
   Testimonials
   ============================================ */

.testimonial {
  background-color: var(--color-surface-elevated);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

/* ============================================
   Pricing Table
   ============================================ */

.pricing-card {
  position: relative;
  text-align: center;
}

.pricing-card.featured {
  border: 2px solid var(--color-primary);
  transform: scale(1.05);
}

.pricing-price {
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--color-text);
  margin: var(--space-lg) 0;
}

.pricing-price .currency {
  font-size: var(--text-2xl);
  vertical-align: top;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin: var(--space-xl) 0;
}

.pricing-features li {
  padding: var(--space-sm) 0;
  color: var(--color-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: bold;
  flex-shrink: 0;
}

/* ============================================
   Accordion
   ============================================ */

.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.accordion-header {
  width: 100%;
  padding: var(--space-lg);
  background-color: var(--color-surface-elevated);
  border: none;
  text-align: left;
  font-size: var(--text-lg);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-fast);
}

.accordion-header:hover {
  background-color: var(--color-surface);
}

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

.accordion-icon {
  transition: transform var(--transition-base);
}

.accordion.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.accordion-content-inner {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-secondary);
}

.accordion.active .accordion-content {
  max-height: 1000px;
}

/* ============================================
   Theme Toggle
   ============================================ */

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-surface);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) 0 var(--space-xl);
  margin-top: var(--space-4xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-section h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
}

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

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ============================================
   Checkout / Purchase
   ============================================ */

.checkout-section {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.checkout-section.locked {
  filter: blur(4px);
  pointer-events: none;
  opacity: 0.6;
}

.access-code-form {
  max-width: 400px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-2xl);
}

.cart-summary {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.cart-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 2px solid var(--color-border);
  font-weight: 700;
  font-size: var(--text-xl);
}

.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

.success-screen {
  text-align: center;
  padding: var(--space-4xl) 0;
}

.success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  background-color: var(--color-success);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-3xl);
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast-container {
  position: fixed;
  top: calc(var(--header-height) + var(--space-md));
  right: var(--space-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 300px;
  animation: slideIn 0.3s ease;
}

.toast.success {
  border-left: 4px solid var(--color-success);
}

.toast.error {
  border-left: 4px solid var(--color-error);
}

.toast.info {
  border-left: 4px solid var(--color-primary);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ============================================
   Download Page
   ============================================ */

.download-card {
  max-width: 600px;
  margin: 0 auto;
}

.download-info {
  display: grid;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.download-info-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
}

.checksum-display {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-surface);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  margin: var(--space-md) 0;
}

.checksum-code {
  flex: 1;
  word-break: break-all;
  color: var(--color-text-secondary);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .pricing-card.featured {
    transform: scale(1);
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .header-container {
    padding: 0 var(--space-md);
  }
  
  .container {
    padding: 0 var(--space-md);
  }
}

/* ============================================
   Password Gate Modal
   ============================================ */

.password-gate {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.password-gate.hidden {
  display: none;
}

.password-gate-modal {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.password-gate-modal h2 {
  margin-bottom: var(--space-md);
}

.password-gate-modal p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.password-gate-input {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  transition: all var(--transition-fast);
}

.password-gate-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.password-gate-input.error {
  border-color: var(--color-error);
}

.password-gate-error {
  display: block;
  color: var(--color-error);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
  min-height: 20px;
}

.password-gate-submit {
  width: 100%;
}

/* ============================================
   Utility Classes
   ============================================ */

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.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;
}