/* signature.css - Style moderne inspiré de courriers.css */
:root {
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: #dbeafe;
  --secondary-color: #6b7280;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --background: #f8fafc;
  --background-light: #f1f5f9;
  --card-background: #ffffff;
  --border-color: #e5e7eb;
  --border-light: #f3f4f6;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -1px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.05);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 10px 10px -5px rgb(0 0 0 / 0.04);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.2s ease-out;
  --transition-slow: 0.3s ease-out;
}

/* Reset */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  margin: 0;
  padding: 0;
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background décoratif */
.background-image {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
  pointer-events: none;
  z-index: -1;
}

/* Container principal */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 24px;
  min-height: 100vh;
  margin-top: 0;
}

/* Header amélioré */
.header-container {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 32px;
  padding: 24px 32px;
  background: var(--card-background);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
  margin-top: 0;
}

.header-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
}

.logo-link {
  display: flex;
  align-items: center;
  transition: transform var(--transition-base);
}

.logo-link:hover {
  transform: scale(1.05);
}

.logo {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Zone de dépôt modernisée */
.drop-zone {
  background: var(--card-background);
  border: 3px dashed var(--border-color);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  transition: all var(--transition-base);
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}

.drop-zone::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(16, 185, 129, 0.05));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.drop-zone:hover::before,
.drop-zone.dragover::before {
  opacity: 1;
}

.drop-zone.dragover {
  border-color: var(--primary-color);
  background: var(--primary-light);
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.drop-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.drop-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.drop-subtext {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 24px;
}

/* Input fichier caché */
.file-input {
  display: none;
}

/* Bouton parcourir */
.browse-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
  border: none;
  padding: 14px 32px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.browse-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.browse-btn:hover::before {
  left: 100%;
}

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

.btn-icon {
  font-size: 1.1em;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.1));
}

/* Info fichier */
.file-info {
  display: none;
  background: rgba(16, 185, 129, 0.1);
  border: 2px solid var(--success-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-top: 20px;
  position: relative;
}

.file-info.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.file-name {
  font-weight: 600;
  color: var(--success-color);
  margin-bottom: 8px;
  font-size: 1rem;
  word-break: break-all;
}

.file-size {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.remove-file {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--danger-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.remove-file:hover {
  background: #dc2626;
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

/* Bouton signature modernisé */
.sign-btn {
  background: linear-gradient(135deg, #FF6B6B, #FF8E53);
  color: white;
  border: none;
  padding: 18px 40px;
  border-radius: var(--radius-lg);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.sign-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.sign-btn:hover::before {
  left: 100%;
}

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

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

.sign-btn:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: var(--shadow-sm);
  opacity: 0.6;
}

.sign-btn:disabled::before {
  display: none;
}

/* Loader dans le bouton */
.loader {
  display: none;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top: 3px solid white;
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
}

.sign-btn.loading .loader {
  display: inline-block;
}

.sign-btn.loading {
  pointer-events: none;
  opacity: 0.8;
}

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

/* ========================================
SUPPRIMÉ : Styles du modal d'inactivité
Ces styles sont maintenant gérés par auth-modals.css
======================================== */

/* Message de notification fixe */
.message-fixed {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9998;
  min-width: 300px;
  max-width: 500px;
  box-shadow: var(--shadow-xl);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 16px;
  }

  .header-container {
    flex-direction: column;
    text-align: center;
    padding: 20px;
    gap: 16px;
  }

  .title {
    font-size: 1.5rem;
  }

  .drop-zone {
    padding: 40px 20px;
  }

  .drop-icon {
    font-size: 3rem;
  }

  .drop-text {
    font-size: 1rem;
  }

  .browse-btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .sign-btn {
    padding: 14px 28px;
    font-size: 1rem;
  }

  .message-fixed {
    left: 16px;
    right: 16px;
    transform: none;
    min-width: auto;
  }

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

/* Accessibilité */
.sign-btn:focus-visible,
.browse-btn:focus-visible,
.remove-file:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 2px;
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f172a;
    --background-light: #1e293b;
    --card-background: #1e293b;
    --border-color: #334155;
    --border-light: #475569;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
  }

  .background-image {
    opacity: 0.03;
  }

  .drop-zone {
    background: var(--card-background);
  }

  .drop-zone.dragover {
    background: rgba(59, 130, 246, 0.1);
  }
}
/* === Correctifs drag & drop === */
.drop-zone {
  cursor: pointer;
}

.drop-zone::before {
  pointer-events: none;
}

.drop-zone.drag-over::before,
.drop-zone.drag-over {
  border-color: var(--primary-color);
  background: var(--primary-light);
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}