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

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --text-primary: #eee;
  --text-secondary: #aaa;
  --text-muted: #666;
  --accent: #e94560;
  --accent-hover: #ff6b6b;
  --success: #4ade80;
  --warning: #fbbf24;
  --border: #2a2a4a;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

.search-input {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  width: 250px;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
}

/* Layout */
.main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 320px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.sidebar-header select {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.stats {
  padding: 0.75rem 1rem;
  display: flex;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.stats span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.stat-dot.open { background: var(--accent); }
.stat-dot.in_progress { background: var(--warning); }
.stat-dot.resolved { background: var(--success); }

/* Ticket List */
.ticket-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
}

.ticket-list li {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
}

.ticket-list li:hover {
  background: var(--bg-tertiary);
}

.ticket-list li.active {
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent);
}

.ticket-list li.loading {
  color: var(--text-muted);
  cursor: default;
}

.ticket-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

.ticket-id {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.ticket-subject {
  font-weight: 500;
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ticket-email {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.ticket-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  font-size: 0.75rem;
}

.status-badge {
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  text-transform: uppercase;
  font-weight: 500;
}

.status-badge.open { background: var(--accent); color: white; }
.status-badge.in_progress { background: var(--warning); color: black; }
.status-badge.resolved { background: var(--success); color: black; }
.status-badge.closed { background: var(--text-muted); color: white; }

/* Main Content */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.ticket-detail .empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
}

.ticket-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.ticket-header h2 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.ticket-header-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.ticket-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Email Thread */
.email-thread {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.email-item {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 1rem;
  border: 1px solid var(--border);
}

.email-item.outbound {
  background: var(--bg-tertiary);
  margin-left: 2rem;
}

.email-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
}

.email-from {
  font-weight: 500;
}

.email-from.outbound {
  color: var(--accent);
}

.email-date {
  color: var(--text-muted);
}

.email-body {
  white-space: pre-wrap;
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Right Panel */
.right-panel {
  width: 280px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  padding: 1rem;
}

.right-panel h3 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.user-info {
  font-size: 0.875rem;
}

.user-info .muted {
  color: var(--text-muted);
}

.user-info-item {
  margin-bottom: 0.75rem;
}

.user-info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.user-info-value {
  font-family: 'SF Mono', Monaco, monospace;
  color: var(--text-primary);
}

.support-code {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--accent);
}

/* Buttons */
.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: 12px;
  width: 100%;
  max-width: 600px;
  border: 1px solid var(--border);
}

.modal-content.modal-wide {
  max-width: 700px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 1.125rem;
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.btn-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-body textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  resize: vertical;
}

.modal-body textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* Form elements */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 1024px) {
  .right-panel {
    display: none;
  }
}

@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    max-width: 280px;
  }

  .header-actions {
    display: none;
  }
}