/* ============================================
   LEAN SAAS - DESIGN SYSTEM
   Design industriel moderne et ludique
   ============================================ */

/* ============================================
   1. IMPORTS TYPOGRAPHIES
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
/* Space Grotesk — réservé au logo (kaizain). Fallback safe vers Outfit
   (déjà chargée) si Google Fonts est inaccessible : la marque reste lisible. */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap');

/* ============================================
   2. VARIABLES CSS (Palette de couleurs)
   ============================================ */

:root {
  /* Couleurs principales */
  --color-primary: #1A1F34;
  --color-action: #16B3AE;
  --color-alert: #EA5424;
  --color-secondary: #9DBCC8;
  --color-bg-light: #EFEFEF;
  --color-white: #FFFFFF;

  /* Variantes pour hover/active */
  --color-action-hover: #139f9a;
  --color-action-active: #0f8681;
  --color-alert-hover: #d14a1f;
  --color-primary-light: #2a3548;

  /* Texte */
  --color-text-primary: #1A1F34;
  --color-text-secondary: #5a6478;
  --color-text-light: #8a94a8;
  --color-text-inverse: #FFFFFF;

  /* Bordures */
  --color-border: #d4d9e1;
  --color-border-light: #e8eaef;

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(26, 31, 52, 0.08);
  --shadow-md: 0 4px 6px rgba(26, 31, 52, 0.1);
  --shadow-lg: 0 10px 20px rgba(26, 31, 52, 0.12);
  --shadow-xl: 0 20px 40px rgba(26, 31, 52, 0.15);

  /* Typographies */
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Poppins', sans-serif;

  /* Tailles de police */
  --text-xs: 0.75rem;    /* 12px */
  --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-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.5rem;    /* 24px */
  --space-6: 2rem;      /* 32px */
  --space-8: 3rem;      /* 48px */
  --space-10: 4rem;     /* 64px */

  /* Bordures */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ============================================
   3. RESET ET BASE
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   4. TYPOGRAPHIE
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

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-4);
}

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

a:hover {
  color: var(--color-action-hover);
  text-decoration: underline;
}

/* ============================================
   5. BOUTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Bouton principal (Action) */
.btn-primary {
  background-color: var(--color-action);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-action-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

/* Bouton alerte */
.btn-alert {
  background-color: var(--color-alert);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-alert:hover:not(:disabled) {
  background-color: var(--color-alert-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Bouton secondaire (Outline) */
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-secondary);
}

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

/* Bouton ghost */
.btn-ghost {
  background-color: transparent;
  color: var(--color-action);
}

.btn-ghost:hover:not(:disabled) {
  background-color: rgba(22, 179, 174, 0.1);
}

/* Tailles de boutons */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-lg);
}

/* ============================================
   6. CARTES
   ============================================ */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-header {
  font-family: var(--font-title);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-bg-light);
}

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

.card-footer {
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
}

/* ============================================
   7. BADGES / CHIPS
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background-color: rgba(22, 179, 174, 0.15);
  color: var(--color-action);
}

.badge-alert {
  background-color: rgba(234, 84, 36, 0.15);
  color: var(--color-alert);
}

.badge-secondary {
  background-color: rgba(157, 188, 200, 0.15);
  color: var(--color-secondary);
}

.badge-success {
  background-color: rgba(34, 197, 94, 0.15);
  color: #16a34a;
}

/* ============================================
   8. INPUTS / FORMS
   ============================================ */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-action);
  box-shadow: 0 0 0 3px rgba(22, 179, 174, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-alert);
}

/* ============================================
   9. GRILLE / LAYOUT
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   10. UTILITAIRES
   ============================================ */

/* Espacements */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }

/* Texte */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-bold { font-weight: 700; }
.text-light { color: var(--color-text-light); }
.text-secondary { color: var(--color-text-secondary); }

/* Display */
.flex { display: flex; }
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

/* ============================================
   11. COMPOSANTS SPÉCIFIQUES LEAN
   ============================================ */

/* Carte Outil */
.tool-card {
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--color-action);
}

.tool-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
}

/* Carte Méthode */
.method-card {
  border-left: 4px solid var(--color-primary);
}

.method-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.method-step {
  padding: var(--space-3);
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-action);
}

/* Tag de priorité */
.priority-high {
  background-color: rgba(234, 84, 36, 0.1);
  color: var(--color-alert);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.priority-medium {
  background-color: rgba(234, 179, 8, 0.1);
  color: #d97706;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.priority-low {
  background-color: rgba(34, 197, 94, 0.1);
  color: #16a34a;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* ============================================
   12. SYSTÈME D'ICÔNES SVG (.ico)
   ============================================ */

.ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: #DBE5E8;
  border-radius: 6px;
  flex-shrink: 0;
  vertical-align: middle;
}

.ico svg {
  stroke: #16B3AE;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ico-xs { width: 22px; height: 22px; }
.ico-xs svg { width: 13px; height: 13px; }

.ico-sm { width: 28px; height: 28px; }
.ico-sm svg { width: 16px; height: 16px; }

.ico-md { width: 36px; height: 36px; }
.ico-md svg { width: 20px; height: 20px; }

.ico-lg { width: 48px; height: 48px; }
.ico-lg svg { width: 28px; height: 28px; }

/* ============================================
   13. BADGES STATUT & PRIORITÉ PARTAGÉS
   (utilisés dans toutes les méthodes et outils)
   ============================================ */

.badge-status-waiting { background: rgba(107,114,128,0.12); color: #4b5563; padding: 2px 8px; border-radius: 10px; font-size: 0.72rem; font-weight: 700; display: inline-block; }
.badge-status-active  { background: rgba(22,179,174,0.12);  color: #0f8681; padding: 2px 8px; border-radius: 10px; font-size: 0.72rem; font-weight: 700; display: inline-block; }
.badge-status-done    { background: #10b981; color: #fff; padding: 2px 8px; border-radius: 10px; font-size: 0.72rem; font-weight: 700; display: inline-block; }

.badge-prio-high   { background: rgba(239,68,68,0.12);  color: #b91c1c; padding: 2px 8px; border-radius: 10px; font-size: 0.72rem; font-weight: 700; display: inline-block; }
.badge-prio-medium { background: rgba(99,102,241,0.12); color: #4338ca; padding: 2px 8px; border-radius: 10px; font-size: 0.72rem; font-weight: 700; display: inline-block; }
.badge-prio-low    { background: rgba(107,114,128,0.12); color: #4b5563; padding: 2px 8px; border-radius: 10px; font-size: 0.72rem; font-weight: 700; display: inline-block; }

/* ============================================
   FIN DU DESIGN SYSTEM
   ============================================ */