/**
 * MAIL MODULE v7.0 - Premium Glassmorphism
 * Design luxueux et spacieux cohérent avec Calendar v7
 */

:root {
  --mail-glass-bg: rgba(255, 255, 255, 0.03);
  --mail-glass-border: rgba(255, 255, 255, 0.1);
  --mail-glass-hover: rgba(255, 255, 255, 0.05);
  --mail-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --mail-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --mail-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --mail-shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);

  --mail-primary: #3B82F6;
  --mail-success: #10B981;
  --mail-warning: #F59E0B;
  --mail-error: #EF4444;
  --mail-gold: #d4af37;
}

/* Container Principal */
#view-mail {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: linear-gradient(135deg,
    rgba(var(--accent-rgb, 99, 102, 241), 0.03) 0%,
    rgba(var(--accent-rgb, 99, 102, 241), 0.01) 100%);
  overflow-y: auto;
  padding: 28px;
  gap: 24px;
}

/* ===== HERO SECTION GLASSMORPHISM ===== */
.mail-hero {
  background: var(--mail-glass-bg);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 1px solid var(--mail-glass-border);
  padding: 32px;
  box-shadow: var(--mail-shadow-md);
  position: relative;
  overflow: hidden;
}

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

.mail-hero-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 20px;
}

.mail-hero-title {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.mail-hero-title h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(135deg, var(--text), var(--mail-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mail-hero-badge {
  padding: 8px 18px;
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.mail-hero-badge.ok {
  background: rgba(16, 185, 129, 0.15);
  color: var(--mail-success);
  border: 1px solid rgba(16, 185, 129, 0.3);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.mail-hero-badge.error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--mail-error);
  border: 1px solid rgba(239, 68, 68, 0.3);
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.2);
}

.mail-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Buttons Premium */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 12px;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.1rem;
  gap: 12px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--mail-primary), rgba(59, 130, 246, 0.8));
  color: #fff;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-accent {
  background: linear-gradient(135deg, var(--mail-gold), #f4d03f);
  color: #1a1a1a;
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.4);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

.btn-outline {
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  color: var(--text);
  border: 1px solid var(--mail-glass-border);
  box-shadow: var(--mail-shadow-sm);
}

.btn-outline:hover {
  background: var(--mail-glass-hover);
  border-color: rgba(var(--accent-rgb, 99, 102, 241), 0.3);
  transform: translateY(-1px);
}

.btn svg {
  width: 20px;
  height: 20px;
  position: relative;
  z-index: 1;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Stats Cards Glassmorphism */
.mail-hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.mail-stat-card {
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  border-radius: 14px;
  border: 1px solid var(--mail-glass-border);
  padding: 20px;
  transition: all 0.3s ease;
}

.mail-stat-card:hover {
  background: var(--mail-glass-hover);
  transform: translateY(-2px);
  box-shadow: var(--mail-shadow-sm);
}

.mail-stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 600;
}

.mail-stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(135deg, var(--text), var(--mail-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== TABS GLASSMORPHISM ===== */
.mail-tabs {
  display: flex;
  gap: 8px;
  padding: 6px;
  background: var(--mail-glass-bg);
  backdrop-filter: blur(20px);
  border-radius: 14px;
  border: 1px solid var(--mail-glass-border);
  box-shadow: var(--mail-shadow-sm);
  overflow-x: auto;
}

.mail-tab {
  padding: 12px 24px;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.mail-tab.active {
  background: var(--mail-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.mail-tab:not(.active):hover {
  color: var(--text);
  background: var(--mail-glass-hover);
}

/* Tab Content */
.mail-tab-content {
  flex: 1;
  background: var(--mail-glass-bg);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  border: 1px solid var(--mail-glass-border);
  box-shadow: var(--mail-shadow-md);
  padding: 28px;
  overflow: auto;
}

/* ===== MODAL COMPOSER LUXUEUX SPACIEUX ===== */
.mail-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
  z-index: 3000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.mail-modal {
  background: var(--bg-primary);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  width: 95%;
  max-width: 1200px; /* SPACIEUX */
  height: 85vh; /* HAUTEUR LUXUEUSE */
  max-height: 900px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--mail-shadow-xl);
  border: 1px solid var(--mail-glass-border);
  animation: slideUp 0.3s ease;
  overflow: hidden;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.mail-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 32px;
  border-bottom: 1px solid var(--mail-glass-border);
  background: linear-gradient(135deg,
    rgba(var(--accent-rgb, 99, 102, 241), 0.08),
    transparent);
  flex-shrink: 0;
}

.mail-modal-header h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
}

.mail-modal-close {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  color: var(--text);
  font-size: 1.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  border: 1px solid var(--mail-glass-border);
}

.mail-modal-close:hover {
  background: var(--mail-error);
  color: #fff;
  transform: rotate(90deg);
  border-color: var(--mail-error);
}

.mail-modal-body {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mail-form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mail-form-group label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.mail-input {
  width: 100%;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid var(--mail-glass-border);
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  color: var(--text);
  font-size: 1rem;
  transition: all 0.3s ease;
  font-family: inherit;
}

.mail-input:focus {
  outline: none;
  border-color: var(--mail-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
  background: var(--mail-glass-hover);
}

.mail-input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.mail-form-group small {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: -6px;
}

/* Éditeur Riche Luxueux */
.mail-editor-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  min-height: 400px;
}

.mail-editor-toolbar {
  display: flex;
  gap: 8px;
  padding: 12px;
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  border: 1px solid var(--mail-glass-border);
  flex-wrap: wrap;
}

.mail-toolbar-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--mail-glass-border);
  background: var(--mail-glass-bg);
  backdrop-filter: blur(5px);
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.mail-toolbar-btn:hover {
  background: var(--mail-primary);
  color: #fff;
  border-color: var(--mail-primary);
  transform: scale(1.05);
}

.mail-toolbar-btn:active {
  transform: scale(0.95);
}

.mail-editor {
  flex: 1;
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--mail-glass-border);
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.7;
  overflow-y: auto;
  transition: all 0.3s ease;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.mail-editor:focus {
  outline: none;
  border-color: var(--mail-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
  background: var(--mail-glass-hover);
}

.mail-editor[data-placeholder]:empty::before {
  content: attr(data-placeholder);
  color: var(--text-muted);
  opacity: 0.5;
}

.mail-modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  border-top: 1px solid var(--mail-glass-border);
  background: linear-gradient(to top,
    rgba(var(--accent-rgb, 99, 102, 241), 0.03),
    transparent);
  flex-shrink: 0;
}

.mail-modal-footer-left {
  display: flex;
  gap: 12px;
}

.mail-modal-footer-right {
  display: flex;
  gap: 12px;
}

/* Attachments Section */
.mail-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px;
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  border: 1px solid var(--mail-glass-border);
}

.mail-attachment {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--mail-glass-hover);
  border-radius: 8px;
  border: 1px solid var(--mail-glass-border);
  font-size: 0.9rem;
  color: var(--text);
}

.mail-attachment-remove {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: var(--mail-error);
  color: #fff;
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.mail-attachment-remove:hover {
  transform: scale(1.1);
}

/* Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Empty State */
.mail-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
}

.mail-empty-state svg {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
  opacity: 0.3;
}

.mail-empty-state h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 10px 0;
  color: var(--text);
}

.mail-empty-state p {
  font-size: 1rem;
  margin: 0;
  max-width: 400px;
}

/* Email List */
.mail-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mail-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--mail-glass-bg);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  border: 1px solid var(--mail-glass-border);
  transition: all 0.3s ease;
  cursor: pointer;
}

.mail-item:hover {
  background: var(--mail-glass-hover);
  transform: translateX(4px);
  box-shadow: var(--mail-shadow-sm);
}

.mail-item-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--mail-primary), rgba(59, 130, 246, 0.8));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.mail-item-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

.mail-item-content {
  flex: 1;
  min-width: 0;
}

.mail-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 6px;
}

.mail-item-subject {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mail-item-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.mail-item-to {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mail-item-status {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.mail-item-status.sent {
  background: rgba(16, 185, 129, 0.15);
  color: var(--mail-success);
}

.mail-item-status.failed {
  background: rgba(239, 68, 68, 0.15);
  color: var(--mail-error);
}

/* Responsive */
@media (max-width: 768px) {
  #view-mail {
    padding: 16px;
    gap: 16px;
  }

  .mail-hero {
    padding: 20px;
  }

  .mail-hero-title h1 {
    font-size: 1.6rem;
  }

  .mail-hero-actions {
    width: 100%;
  }

  .btn-lg {
    width: 100%;
    justify-content: center;
  }

  .mail-modal {
    width: 100%;
    height: 95vh;
    border-radius: 16px;
  }

  .mail-modal-header {
    padding: 20px;
  }

  .mail-modal-header h3 {
    font-size: 1.3rem;
  }

  .mail-modal-body {
    padding: 20px;
  }

  .mail-editor-container {
    min-height: 300px;
  }

  .mail-modal-footer {
    flex-direction: column;
    gap: 12px;
  }

  .mail-modal-footer-left,
  .mail-modal-footer-right {
    width: 100%;
  }

  .mail-modal-footer .btn {
    width: 100%;
  }

  .mail-tabs {
    overflow-x: auto;
  }

  .mail-item {
    flex-direction: column;
  }

  .mail-item-header {
    flex-direction: column;
    align-items: flex-start;
  }
}