/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    color: #1a1a2e;
    background: #f0f2f5;
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 220px;
    background: #1a1a2e;
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    padding: 0;
    overflow-y: auto;
}

.sidebar-brand {
    font-size: 20px;
    font-weight: 700;
    padding: 24px 20px;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar ul {
    list-style: none;
    padding: 12px 0;
}

.sidebar li a {
    display: block;
    padding: 12px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.2s;
}

.sidebar li a:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.sidebar li.active a {
    color: #fff;
    background: rgba(255,255,255,0.12);
    border-left: 3px solid #4a6cf7;
    padding-left: 17px;
}

/* Content */
.content {
    margin-left: 220px;
    padding: 32px 40px;
    flex: 1;
    min-width: 0;
}

/* Typography */
h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: #1a1a2e;
}

h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 32px 0 16px;
    color: #1a1a2e;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 8px;
}

.stat-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.stat-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: #4a6cf7;
}

.stat-card--danger .stat-value {
    color: #e74c3c;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: #666;
    margin-top: 4px;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.table thead th {
    background: #f8f9fa;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #666;
    border-bottom: 2px solid #e9ecef;
}

.table tbody td {
    padding: 10px 16px;
    border-bottom: 1px solid #f0f0f0;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

.table .empty {
    text-align: center;
    color: #999;
    padding: 24px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge--sent {
    background: #d4edda;
    color: #155724;
}

.badge--failed {
    background: #f8d7da;
    color: #721c24;
}

.badge--dry-run {
    background: #e2e3e5;
    color: #383d41;
}

.badge--pending {
    background: #fff3cd;
    color: #856404;
}

.badge--cancelled {
    background: #e2e3e5;
    color: #6c757d;
}

.badge--draft {
    background: #d6eaf8;
    color: #2471a3;
}

.badge--segment {
    background: #e8daef;
    color: #6c3483;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: #333;
}

.form-group small {
    display: block;
    color: #888;
    margin-top: 4px;
    font-size: 12px;
}

.form-group input[type="text"],
.form-group input[type="file"],
.form-group input[type="datetime-local"],
.form-group select,
.form-group textarea {
    width: 100%;
    max-width: 500px;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4a6cf7;
    box-shadow: 0 0 0 3px rgba(74,108,247,0.1);
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 6px;
}

.form-group input[type="checkbox"] + span,
.form-group label:has(input[type="checkbox"]) {
    font-weight: 400;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary {
    background: #4a6cf7;
    color: #fff;
}

.btn-primary:hover {
    background: #3a5ce5;
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-secondary {
    background: #6c757d;
    color: #fff;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-warning {
    background: #f0ad4e;
    color: #fff;
}

.btn-warning:hover {
    background: #ec971f;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

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

/* Filter bar */
.filter-bar {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-bar .form-group {
    margin-bottom: 0;
}

.filter-bar select,
.filter-bar input {
    max-width: 200px;
}

/* Confirm box */
.confirm-box {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    max-width: 600px;
}

.confirm-box dl {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 8px 16px;
    margin-bottom: 20px;
}

.confirm-box dt {
    font-weight: 600;
    color: #666;
}

.confirm-box dd {
    color: #1a1a2e;
}

/* Results summary */
.result-box {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    max-width: 600px;
}

.result-stats {
    display: flex;
    gap: 24px;
    margin: 16px 0;
}

.result-stat {
    text-align: center;
}

.result-stat .value {
    display: block;
    font-size: 28px;
    font-weight: 700;
}

.result-stat .label {
    font-size: 12px;
    color: #666;
}

.result-stat .value.success { color: #27ae60; }
.result-stat .value.danger { color: #e74c3c; }
.result-stat .value.muted { color: #999; }

/* Action links */
.actions {
    display: flex;
    gap: 8px;
}

/* Preview table for import */
.preview-table {
    margin-top: 16px;
}

/* Mode switch buttons */
.mode-switch {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.btn-mode {
    padding: 10px 20px;
    border: 2px solid #ddd;
    border-radius: 6px;
    background: #fff;
    color: #666;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-mode:hover {
    border-color: #4a6cf7;
    color: #4a6cf7;
}

.btn-mode.active {
    border-color: #4a6cf7;
    background: #4a6cf7;
    color: #fff;
}

/* Send options (now / scheduled) */
.send-options {
    display: flex;
    gap: 8px;
}

.send-option {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    border: 2px solid #ddd;
    border-radius: 6px;
    background: #fff;
    color: #666;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.send-option:hover {
    border-color: #4a6cf7;
    color: #4a6cf7;
}

.send-option.active {
    border-color: #4a6cf7;
    background: #eef1ff;
    color: #4a6cf7;
}

.send-option input[type="radio"] {
    accent-color: #4a6cf7;
}

/* Editor toolbar */
.editor-toolbar {
    display: flex;
    gap: 4px;
    margin-bottom: 4px;
}

.btn-toolbar {
    padding: 5px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: #fff;
    color: #555;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-toolbar:hover {
    background: #f0f2f5;
    border-color: #4a6cf7;
    color: #4a6cf7;
}

/* Modal overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-box {
    background: #fff;
    border-radius: 10px;
    padding: 28px;
    width: 420px;
    max-width: 90vw;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.modal-box h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a1a2e;
}

.modal-box .form-group input[type="text"] {
    max-width: 100%;
}

/* Color options */
.color-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.color-option {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 10px;
    border: 2px solid #ddd;
    border-radius: 6px;
    background: #fff;
    font-size: 12px;
    font-weight: 600;
    color: #555;
    cursor: pointer;
    transition: all 0.2s;
}

.color-option:hover {
    border-color: #999;
}

.color-option.active {
    border-color: #4a6cf7;
    background: #eef1ff;
}

.color-swatch {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 3px;
}

/* Preview button */
.btn-toolbar--preview {
    margin-left: auto;
}

/* Preview modal (larger) */
.modal-box--preview {
    width: 680px;
    max-width: 95vw;
}

.preview-frame-wrapper {
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    background: #fff;
}

.preview-frame {
    width: 100%;
    height: 400px;
    border: none;
}