/*
 * PasteGen - Premium Design System
 * A modern, lightweight CSS framework for the PasteGen platform
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
  /* Color Palette - Light Mode */
  --color-bg-primary: #f8fafc;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-elevated: #ffffff;
  
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #94a3b8;
  --color-text-inverse: #ffffff;
  
  --color-border: #e2e8f0;
  --color-border-focus: #6366f1;
  
  --color-accent: #6366f1;
  --color-accent-hover: #4f46e5;
  --color-accent-light: rgba(99, 102, 241, 0.1);
  
  --color-success: #10b981;
  --color-success-light: rgba(16, 185, 129, 0.1);
  --color-error: #ef4444;
  --color-error-light: rgba(239, 68, 68, 0.1);
  --color-warning: #f59e0b;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  /* 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;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-modal: 200;
  --z-toast: 300;
  
  /* Container */
  --container-max: 1200px;
  --container-narrow: 800px;
}

/* Dark Mode */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-elevated: #1e293b;
  
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-text-inverse: #0f172a;
  
  --color-border: #334155;
  --color-border-focus: #818cf8;
  
  --color-accent: #818cf8;
  --color-accent-hover: #6366f1;
  --color-accent-light: rgba(129, 140, 248, 0.15);
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 25px rgba(129, 140, 248, 0.4);
}

/* ============================================
   BASE RESET & GLOBAL STYLES
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

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

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

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

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

/* Focus Visible */
:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */

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

.container--narrow {
  max-width: var(--container-narrow);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo__icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-lg);
}

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

.nav__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.nav__link--active {
  color: var(--color-accent);
  background-color: var(--color-accent-light);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
}

.theme-toggle__icon {
  font-size: var(--font-size-lg);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background-color: var(--color-bg-secondary);
    padding: var(--space-xl);
    gap: var(--space-sm);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
  }
  
  .nav--open {
    transform: translateX(0);
  }
  
  .nav__link {
    width: 100%;
    padding: var(--space-md);
    font-size: var(--font-size-md);
  }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

@media (max-width: 768px) {
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-md);
  }
}

/* ============================================
   NOTEPAD EDITOR
   ============================================ */

.editor {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-bottom: var(--space-2xl);
}

.editor__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.editor__dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.editor__dot--red { background-color: #ef4444; }
.editor__dot--yellow { background-color: #f59e0b; }
.editor__dot--green { background-color: #10b981; }

.editor__title-input {
  flex: 1;
  margin-left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.editor__title-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.editor__title-input::placeholder {
  color: var(--color-text-tertiary);
}

.editor__body {
  position: relative;
  min-height: 300px;
}

.editor__textarea {
  width: 100%;
  min-height: 300px;
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border: none;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  resize: vertical;
}

.editor__textarea:focus {
  outline: none;
}

.editor__textarea::placeholder {
  color: var(--color-text-tertiary);
}

/* Paper Effect */
.editor__body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--color-border) 10%, 
    var(--color-border) 90%, 
    transparent
  );
}

/* ============================================
   FORM CONTROLS
   ============================================ */

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

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

.form-input {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

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

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

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

.form-input--error:focus {
  box-shadow: 0 0 0 3px var(--color-error-light);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
  cursor: pointer;
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-xs);
}

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

/* Options Row */
.options-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 640px) {
  .options-row {
    grid-template-columns: 1fr;
  }
}

/* Custom DateTime */
.datetime-group {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.datetime-group.visible {
  display: grid;
}

@media (max-width: 640px) {
  .datetime-group {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   BUTTONS
   ============================================ */

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  color: white;
  box-shadow: var(--shadow-md), 0 0 0 0 var(--color-accent-light);
}

.btn--primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn--primary:active:not(:disabled) {
  transform: translateY(0);
}

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

.btn--secondary:hover:not(:disabled) {
  background: var(--color-bg-secondary);
  border-color: var(--color-accent);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn--ghost:hover:not(:disabled) {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--font-size-lg);
}

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

.btn--full {
  width: 100%;
}

/* Loading State */
.btn--loading {
  position: relative;
  color: transparent !important;
}

.btn--loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.btn--primary.btn--loading::after {
  border-top-color: white;
}

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

/* ============================================
   PAD VIEWER
   ============================================ */

.pad-viewer {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.pad-viewer__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.pad-viewer__meta {
  flex: 1;
}

.pad-viewer__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
  word-break: break-word;
}

.pad-viewer__info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.pad-viewer__info-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.pad-viewer__actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.pad-viewer__content {
  padding: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 200px;
}

.pad-viewer__content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.pad-viewer__content a:hover {
  color: var(--color-accent-hover);
}

/* Expiry Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
}

.badge--warning {
  background: var(--color-warning);
  color: white;
}

.badge--success {
  background: var(--color-success);
  color: white;
}

.badge--neutral {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

@media (max-width: 640px) {
  .pad-viewer__header {
    flex-direction: column;
  }
  
  .pad-viewer__actions {
    width: 100%;
    justify-content: flex-end;
  }
}

/* ============================================
   SUCCESS MODAL
   ============================================ */

.success-panel {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2xl);
  text-align: center;
  display: none;
}

.success-panel.visible {
  display: block;
  animation: slideUp 0.3s ease;
}

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

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

.success-panel__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.success-panel__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.success-panel__url {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.success-panel__url-text {
  flex: 1;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  word-break: break-all;
  text-align: left;
}

.success-panel__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

@media (max-width: 640px) {
  .success-panel__actions {
    flex-direction: column;
  }
}

/* ============================================
   SKELETON LOADER
   ============================================ */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 25%,
    var(--color-bg-secondary) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton--text {
  height: 1em;
  margin-bottom: var(--space-sm);
}

.skeleton--title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-md);
}

.skeleton--content {
  height: 200px;
}

/* ============================================
   ERROR STATE
   ============================================ */

.error-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
}

.error-state__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  background: var(--color-error-light);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-4xl);
  color: var(--color-error);
}

.error-state__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.error-state__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features {
  padding: var(--space-3xl) 0;
}

.features__title {
  text-align: center;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2xl);
}

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

.feature-card {
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-normal);
}

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

.feature-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.feature-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-sm);
}

.feature-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .features__grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   HOW IT WORKS
   ============================================ */

.how-it-works {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-tertiary);
}

.how-it-works__title {
  text-align: center;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2xl);
}

.steps {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
}

.step::after {
  content: '→';
  position: absolute;
  top: 24px;
  right: -24px;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xl);
}

.step:last-child::after {
  display: none;
}

.step__number {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.step__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.step__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .steps {
    flex-direction: column;
    gap: var(--space-lg);
  }
  
  .step::after {
    content: '↓';
    position: static;
    display: block;
    margin-top: var(--space-md);
  }
  
  .step:last-child::after {
    display: none;
  }
}

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

.footer {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

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

@media (max-width: 640px) {
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   CONTENT PAGES (About, Privacy, etc.)
   ============================================ */

.content-page {
  padding: var(--space-3xl) 0;
}

.content-page__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.content-page__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
}

.content-page__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

.content-page__body {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.content-page__body h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.content-page__body h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.content-page__body p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: var(--line-height-relaxed);
}

.content-page__body ul,
.content-page__body ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
  color: var(--color-text-secondary);
}

.content-page__body li {
  margin-bottom: var(--space-sm);
}

.content-page__body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================================
   CONTACT FORM
   ============================================ */

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

/* ============================================
   404 PAGE
   ============================================ */

.page-404 {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl);
}

.page-404__code {
  font-size: 8rem;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.page-404__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.page-404__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: toastIn 0.3s ease;
  min-width: 280px;
  max-width: 400px;
}

.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-accent);
}

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

.toast__message {
  flex: 1;
  font-size: var(--font-size-sm);
}

.toast__close {
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: var(--space-xs);
  font-size: var(--font-size-lg);
  line-height: 1;
}

.toast__close:hover {
  color: var(--color-text-primary);
}

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

.toast--leaving {
  animation: toastOut 0.3s ease forwards;
}

@keyframes toastOut {
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

@media (max-width: 640px) {
  .toast-container {
    left: var(--space-md);
    right: var(--space-md);
    bottom: var(--space-md);
  }
  
  .toast {
    min-width: auto;
    max-width: none;
  }
}

/* ============================================
   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: 0;
}

.hidden {
  display: none !important;
}

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

.mb-0 { margin-bottom: 0; }
.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); }

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