/* ============================================
   BASE.CSS — Variables, reset, typographie
   ============================================ */

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

/* --- Variables globales --- */
:root {
  /* Couleurs */
  --color-bg:           #FFFFFF;
  --color-bg-alt:       #F8FAFC;
  --color-text:         #222222;
  --color-text-muted:   #6B7280;
  --color-dark:         #111111;   /* topbar, footer */
  --color-accent:       #2563EB;
  --color-accent-dark:  #1D4ED8;
  --color-accent-light: #EFF6FF;
  --color-border:       #E5E7EB;
  --color-success:      #10B981;
  --color-error:        #EF4444;

  /* Typographie */
  --font-base: 'Inter', system-ui, sans-serif;
  --text-sm:   0.875rem;   /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg:   1.125rem;   /* 18px */
  --text-xl:   1.25rem;    /* 20px */
  --text-2xl:  1.5rem;     /* 24px */
  --text-3xl:  1.875rem;   /* 30px */
  --text-4xl:  2.25rem;    /* 36px */
  --text-5xl:  3rem;       /* 48px */

  /* Espacements */
  --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;

  /* Layout */
  --container-max: 1200px;
  --container-pad: 1.5rem;

  /* Effets */
  --radius-sm:  0.375rem;
  --radius-md:  0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 10px 30px rgba(0,0,0,0.1), 0 4px 8px rgba(0,0,0,0.04);
  --transition: 0.25s ease;
}

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

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

body {
  font-family: var(--font-base);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --- Utilitaires layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

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

.section-alt {
  background-color: var(--color-bg-alt);
}

/* --- Utilitaires texte --- */
.section-label {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
}

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

.text-center .section-subtitle {
  margin: 0 auto;
}

/* --- Boutons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

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

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.btn-dark {
  background-color: var(--color-dark);
  color: #fff;
}

.btn-dark:hover {
  background-color: #000;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

/* --- Scroll progress bar --- */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-accent);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
}

/* --- Legal page --- */
.legal-section {
  padding: var(--space-4xl) 0;
  max-width: 780px;
  margin: 0 auto;
}

.legal-section h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.legal-section h1.legal-section-break {
  margin-top: var(--space-4xl);
  padding-top: var(--space-3xl);
  border-top: 2px solid var(--color-border);
}

.legal-section h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-sm);
}

.legal-section h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-xs);
}

.legal-section p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.legal-updated {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: var(--space-2xl);
}

.legal-list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 var(--space-md);
}

.legal-list li {
  position: relative;
  padding-left: var(--space-lg);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-xs);
}

.legal-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0 var(--space-lg);
  font-size: var(--text-sm);
}

.legal-table th,
.legal-table td {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.legal-table th {
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-weight: 600;
}

.legal-table code {
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .section-title {
    font-size: var(--text-2xl);
  }

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