/* ====================================
   L'ÉDITEUR - DESIGN SYSTEM & COMPONENTS
   Fichier: css/components.css
   ==================================== */

/* =========================
   CSS VARIABLES (DESIGN TOKENS)
   ========================= */

:root {
  /* === COLORS === */
  /* Base Colors */
  --color-primary-50: #f0fdff;
  --color-primary-100: #ccf7fe;
  --color-primary-200: #99effd;
  --color-primary-300: #66e7fc;
  --color-primary-400: #33dffa;
  --color-primary-500: #00f5ff; /* Main cyan */
  --color-primary-600: #00c4cc;
  --color-primary-700: #009399;
  --color-primary-800: #006266;
  --color-primary-900: #003133;

  /* Purple Accent */
  --color-accent-50: #faf5ff;
  --color-accent-100: #f3e8ff;
  --color-accent-200: #e9d5ff;
  --color-accent-300: #d8b4fe;
  --color-accent-400: #c084fc;
  --color-accent-500: #8b5cf6; /* Main purple */
  --color-accent-600: #7c3aed;
  --color-accent-700: #6d28d9;
  --color-accent-800: #5b21b6;
  --color-accent-900: #4c1d95;

  /* Pink Accent */
  --color-pink-500: #ec4899;
  --color-pink-600: #db2777;

  /* Neutral Colors */
  --color-neutral-50: #fafafa;
  --color-neutral-100: #f4f4f5;
  --color-neutral-200: #e4e4e7;
  --color-neutral-300: #d4d4d8;
  --color-neutral-400: #a1a1aa;
  --color-neutral-500: #71717a;
  --color-neutral-600: #52525b;
  --color-neutral-700: #3f3f46;
  --color-neutral-800: #27272a;
  --color-neutral-900: #18181b;
  --color-neutral-950: #09090b;

  /* Semantic Colors */
  --color-background-primary: var(--color-neutral-950);
  --color-background-secondary: var(--color-neutral-900);
  --color-background-tertiary: var(--color-neutral-800);
  
  --color-text-primary: var(--color-neutral-50);
  --color-text-secondary: var(--color-neutral-400);
  --color-text-muted: var(--color-neutral-500);
  --color-text-inverse: var(--color-neutral-900);

  --color-border-primary: rgba(255, 255, 255, 0.1);
  --color-border-secondary: rgba(255, 255, 255, 0.05);
  
  --color-glass-bg: rgba(255, 255, 255, 0.05);
  --color-glass-border: rgba(255, 255, 255, 0.1);

  /* === TYPOGRAPHY === */
  --font-family-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  
  /* Font Sizes */
  --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-size-7xl: 4.5rem;    /* 72px */

  /* Font Weights */
  --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 Heights */
  --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 === */
  --space-px: 1px;
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* === RADIUS === */
  --radius-none: 0;
  --radius-sm: 0.125rem;   /* 2px */
  --radius-default: 0.25rem; /* 4px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;    /* 8px */
  --radius-xl: 0.75rem;   /* 12px */
  --radius-2xl: 1rem;     /* 16px */
  --radius-3xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* === SHADOWS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-default: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  
  /* Neon Shadows */
  --shadow-neon-sm: 0 0 10px rgba(0, 245, 255, 0.2);
  --shadow-neon-default: 0 0 20px rgba(0, 245, 255, 0.3);
  --shadow-neon-lg: 0 0 30px rgba(0, 245, 255, 0.4);
  --shadow-neon-purple: 0 0 30px rgba(139, 92, 246, 0.3);
  --shadow-neon-pink: 0 0 25px rgba(236, 72, 153, 0.3);

  /* === TRANSITIONS === */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-slower: 700ms ease;

  /* === Z-INDEX === */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* =========================
   COMPONENT STYLES
   ========================= */

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius-xl);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-accent-500));
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-neon-default);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon-lg);
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-glass-bg);
  color: var(--color-text-primary);
  border-color: var(--color-glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--color-primary-500);
  color: var(--color-primary-500);
  background: rgba(0, 245, 255, 0.1);
  box-shadow: var(--shadow-neon-sm);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-500);
  border-color: var(--color-primary-500);
}

.btn-outline:hover {
  background: var(--color-primary-500);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-neon-default);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: none;
}

.btn-ghost:hover {
  background: var(--color-glass-bg);
  color: var(--color-text-primary);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-lg);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-2xl);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--font-size-xl);
  border-radius: var(--radius-2xl);
}

/* === CARDS === */
.card {
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-neon-default);
}

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.card-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.card-content {
  margin-bottom: var(--space-4);
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

/* === FORM ELEMENTS === */
.form-group {
  margin-bottom: var(--space-4);
}

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

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  color: var(--color-text-primary);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-neon-sm);
}

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

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-10);
}

/* === BADGES & TAGS === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
}

.badge-primary {
  background: var(--color-primary-500);
  color: var(--color-text-inverse);
}

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

.badge-accent {
  background: var(--color-accent-500);
  color: var(--color-text-inverse);
}

/* === NAVIGATION === */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  position: relative;
  transition: color var(--transition-fast);
  padding: var(--space-2) 0;
}

.nav-link:hover {
  color: var(--color-primary-500);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-500);
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* === LANGUAGE SWITCH === */
.lang-switch {
  display: flex;
  gap: var(--space-1);
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-1);
  backdrop-filter: blur(10px);
}

.lang-btn {
  padding: var(--space-2) var(--space-4);
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-primary);
}

.lang-btn.active {
  background: var(--color-primary-500);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-neon-sm);
}

.lang-btn:hover:not(.active) {
  color: var(--color-primary-500);
  background: rgba(0, 245, 255, 0.1);
}

/* === LOADING STATES === */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-primary);
  border-top: 2px solid var(--color-primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-skeleton {
  background: linear-gradient(
    90deg,
    var(--color-background-tertiary) 25%,
    var(--color-background-secondary) 37%,
    var(--color-background-tertiary) 63%
  );
  background-size: 400% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-default);
}

@keyframes shimmer {
  0% { background-position: 100% 50%; }
  100% { background-position: -100% 50%; }
}

/* === ALERTS & NOTIFICATIONS === */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-info {
  background: rgba(0, 245, 255, 0.1);
  border-color: var(--color-primary-500);
  color: var(--color-primary-500);
}

.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border-color: #22c55e;
  color: #22c55e;
}

.alert-warning {
  background: rgba(251, 191, 36, 0.1);
  border-color: #fbbf24;
  color: #fbbf24;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #ef4444;
}

/* === UTILITY CLASSES === */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-accent-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-reverse {
  background: linear-gradient(135deg, var(--color-accent-500), var(--color-primary-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass {
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  backdrop-filter: blur(10px);
}

.neon-glow {
  box-shadow: var(--shadow-neon-default);
}

.hover-lift {
  transition: transform var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

/* === RESPONSIVE UTILITIES === */
@media (max-width: 768px) {
  .mobile-hidden {
    display: none;
  }
  
  .mobile-full {
    width: 100%;
  }
  
  .mobile-stack {
    flex-direction: column;
  }
}

@media (min-width: 769px) {
  .desktop-hidden {
    display: none;
  }
}

/* === ACCESSIBILITY === */
.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;
}

.focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  ::before,
  ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}