/* ========================================
   Letters Page Styles
   ======================================== */

/* Header */
.letters-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.letters-header h1 {
  font-size: var(--font-size-xl);
  color: var(--color-alabaster);
  font-weight: 600;
}

/* Tabs */
.letters-tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-xl);
  padding: var(--space-1);
}

.letters-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  border: none;
  background: transparent;
  color: var(--color-warm-grey);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.letters-tab:hover {
  color: var(--color-alabaster);
}

.letters-tab.active {
  background: rgba(var(--rgb-dusty-taupe), 0.2);
  color: var(--color-dusty-taupe);
}

.letters-tab .unread-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--color-dusty-taupe);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  margin-left: var(--space-2);
}

/* Letter Cards List */
.letters-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.letter-card {
  background: rgba(0, 0, 0, 0.43);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-2xl);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.letter-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.letter-card--unread {
  border-color: rgba(var(--rgb-dusty-taupe), 0.3);
}

.letter-unread-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-dusty-taupe);
  flex-shrink: 0;
}

.letter-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.letter-card-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-dusty-taupe);
}

/* Template-specific icon backgrounds */
.letter-card-icon.template-classic { background: rgba(175, 143, 115, 0.15); }
.letter-card-icon.template-romantic { background: rgba(255, 107, 107, 0.15); }
.letter-card-icon.template-playful { background: rgba(255, 159, 67, 0.15); }
.letter-card-icon.template-heartfelt { background: rgba(156, 175, 136, 0.15); }
.letter-card-icon.template-poetic { background: rgba(155, 138, 166, 0.15); }

.letter-card-body {
  flex: 1;
  min-width: 0;
}

.letter-card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-alabaster);
  margin-bottom: var(--space-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.letter-card-meta {
  font-size: var(--font-size-xs);
  color: var(--color-soft-grey);
  display: flex;
  gap: var(--space-2);
}

.letter-card-date {
  color: var(--color-soft-grey);
  font-size: var(--font-size-xs);
  flex-shrink: 0;
}

/* Letter Detail View */
.letter-detail-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.letter-detail {
  background: rgba(30, 30, 30, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-6);
}

.letter-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-5);
}

.letter-detail-info h2 {
  font-size: var(--font-size-lg);
  color: var(--color-alabaster);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.letter-detail-sender {
  font-size: var(--font-size-sm);
  color: var(--color-dusty-taupe);
}

.letter-detail-date {
  font-size: var(--font-size-xs);
  color: var(--color-soft-grey);
}

.letter-detail-close {
  background: none;
  border: none;
  color: var(--color-soft-grey);
  cursor: pointer;
  padding: var(--space-1);
  font-size: var(--font-size-lg);
}

.letter-detail-content {
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-warm-grey);
  white-space: pre-wrap;
  word-break: break-word;
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-4);
}

/* Template-specific letter styling */
.letter-template-classic .letter-detail-content {
  background: rgba(175, 143, 115, 0.08);
  border: 1px solid rgba(175, 143, 115, 0.15);
  font-style: normal;
}

.letter-template-romantic .letter-detail-content {
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.15);
  font-style: italic;
}

.letter-template-playful .letter-detail-content {
  background: rgba(255, 159, 67, 0.08);
  border: 1px solid rgba(255, 159, 67, 0.15);
}

.letter-template-heartfelt .letter-detail-content {
  background: rgba(156, 175, 136, 0.08);
  border: 1px solid rgba(156, 175, 136, 0.15);
}

.letter-template-poetic .letter-detail-content {
  background: rgba(155, 138, 166, 0.08);
  border: 1px solid rgba(155, 138, 166, 0.15);
  font-style: italic;
  letter-spacing: 0.3px;
}

.letter-read-receipt {
  font-size: var(--font-size-xs);
  color: var(--color-soft-grey);
  text-align: right;
  padding-top: var(--space-2);
}

.letter-read-receipt.read {
  color: var(--color-dusty-taupe);
}

/* Template Selector */
.template-selector {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.template-option {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  text-align: center;
}

.template-option:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.04);
}

.template-option.active {
  border-color: var(--color-dusty-taupe);
  background: rgba(var(--rgb-dusty-taupe), 0.1);
}

.template-option-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-alabaster);
  margin-bottom: var(--space-1);
}

.template-option-preview {
  font-size: var(--font-size-xs);
  color: var(--color-soft-grey);
  font-style: italic;
}

/* Compose Modal */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-content {
  background: rgba(30, 30, 30, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  width: 90%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) var(--space-5) var(--space-3);
}

.modal-header h2 {
  font-size: var(--font-size-lg);
  color: var(--color-alabaster);
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-soft-grey);
  cursor: pointer;
  padding: var(--space-1);
  font-size: var(--font-size-lg);
}

.modal-body {
  padding: var(--space-3) var(--space-5);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5) var(--space-5);
}

.compose-textarea {
  min-height: 200px;
  resize: vertical;
}

/* Empty State */
.letters-empty {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--color-soft-grey);
}

.letters-empty svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-3);
  opacity: 0.5;
}

.letters-empty p {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
}

/* Flash Message */
.flash-message {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  display: none;
}

.flash-message.success {
  background: rgba(130, 200, 140, 0.15);
  border: 1px solid rgba(130, 200, 140, 0.3);
  color: #82c88c;
}

.flash-message.error {
  background: rgba(255, 68, 68, 0.15);
  border: 1px solid rgba(255, 68, 68, 0.3);
  color: #ff4444;
}

/* Responsive */
@media (max-width: 768px) {
  .letter-detail {
    max-width: 95%;
    padding: var(--space-4);
  }

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

@media (max-width: 480px) {
  .template-selector {
    grid-template-columns: 1fr;
  }
}