/* ============================================================
   Challenge Setup — Admin Dashboard Styles
   Prefix: cs-  (challenge-setup)
   ============================================================ */

/* ---- Custom properties (aligned with admin.css tokens) ---- */
:root {
    --cs-sidebar-bg: var(--nav-bg, #0f172a);
    --cs-sidebar-hover: var(--nav-bg-hover, #1e293b);
    --cs-sidebar-active: var(--nav-bg-active, #334155);
    --cs-sidebar-text: #94a3b8;
    --cs-sidebar-text-bright: #e2e8f0;
    --cs-sidebar-width: 280px;

    --cs-content-bg: var(--a-bg, #f1f5f9);
    --cs-card-bg: var(--a-surface, #ffffff);
    --cs-card-border: var(--a-border, #e2e8f0);
    --cs-card-shadow: var(--a-shadow-xs, 0 1px 2px rgba(0,0,0,0.04));

    --cs-accent: var(--a-primary, #6366f1);
    --cs-accent-hover: var(--a-primary-hover, #4f46e5);
    --cs-accent-light: var(--a-primary-light, #eef2ff);
    --cs-accent-text: #ffffff;

    --cs-danger: var(--a-danger, #ef4444);
    --cs-danger-hover: #dc2626;
    --cs-danger-light: var(--a-danger-light, #fef2f2);

    --cs-success: var(--a-success, #22c55e);
    --cs-success-light: var(--a-success-light, #f0fdf4);

    --cs-warning: var(--a-warning, #f59e0b);
    --cs-warning-light: var(--a-warning-light, #fffbeb);

    --cs-text-primary: var(--a-text, #0f172a);
    --cs-text-secondary: var(--a-text-secondary, #64748b);
    --cs-text-muted: var(--a-text-muted, #94a3b8);

    --cs-input-border: var(--a-border, #e2e8f0);
    --cs-input-focus: var(--a-primary, #6366f1);
    --cs-input-bg: var(--a-surface, #ffffff);

    --cs-radius: 8px;
    --cs-radius-sm: 6px;
    --cs-radius-lg: 12px;

    --cs-font: var(--a-font, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
    --cs-font-mono: var(--a-font-mono, ui-monospace, 'Cascadia Code', monospace);
}

/* ---- Page layout ---- */
.cs-page {
    display: flex;
    height: 100vh;
    font-family: var(--cs-font);
    color: var(--cs-text-primary);
    background: var(--cs-content-bg);
    overflow: hidden;
    /* Compensate for admin nav rail when inside admin-content */
    max-height: 100vh;
}

/* ---- Sidebar ---- */
.cs-sidebar {
    width: var(--cs-sidebar-width);
    min-width: var(--cs-sidebar-width);
    background: var(--cs-sidebar-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.cs-sidebar-header {
    padding: 20px 16px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.cs-sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.cs-sidebar-logo img {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(1);
}

.cs-sidebar-logo span {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--cs-sidebar-text-bright);
}

.cs-sidebar-new-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 10px 12px;
    background: var(--cs-accent);
    color: var(--cs-accent-text);
    border: none;
    border-radius: var(--cs-radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.cs-sidebar-new-btn:hover {
    background: var(--cs-accent-hover);
}

.cs-sidebar-quick-btn {
    background: transparent;
    color: var(--cs-accent);
    border: 1px solid var(--cs-accent);
}

.cs-sidebar-quick-btn:hover {
    background: var(--cs-accent);
    color: var(--cs-accent-text);
}

.cs-sidebar-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.cs-sidebar-list::-webkit-scrollbar {
    width: 4px;
}

.cs-sidebar-list::-webkit-scrollbar-track {
    background: transparent;
}

.cs-sidebar-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

.cs-sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    cursor: pointer;
    transition: background 0.12s;
    border-left: 3px solid transparent;
}

.cs-sidebar-item:hover {
    background: var(--cs-sidebar-hover);
}

.cs-sidebar-item.active {
    background: var(--cs-sidebar-active);
    border-left-color: var(--cs-accent);
}

.cs-sidebar-item-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--cs-sidebar-text-bright);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.cs-sidebar-item-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.cs-sidebar-item-badge.global {
    background: rgba(99, 130, 255, 0.2);
    color: #8da4ff;
}

.cs-sidebar-item-badge.invited {
    background: rgba(245, 166, 35, 0.2);
    color: #f5c264;
}

.cs-sidebar-loading {
    padding: 24px 16px;
    text-align: center;
    color: var(--cs-sidebar-text);
    font-size: 13px;
}

/* ---- Main content ---- */
.cs-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* ---- Top header bar ---- */
.cs-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    background: var(--cs-card-bg);
    border-bottom: 1px solid var(--cs-card-border);
    flex-shrink: 0;
}

.cs-header-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--cs-text-primary);
}

.cs-header-subtitle {
    font-size: 13px;
    color: var(--cs-text-muted);
    margin-top: 2px;
}

.cs-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ---- Tab navigation ---- */
.cs-tabs {
    display: flex;
    gap: 0;
    padding: 0 28px;
    background: var(--cs-card-bg);
    border-bottom: 1px solid var(--cs-card-border);
    flex-shrink: 0;
}

.cs-tab {
    padding: 12px 20px;
    font-size: 13px;
    font-weight: 600;
    color: var(--cs-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    position: relative;
    top: 1px;
}

.cs-tab:hover {
    color: var(--cs-text-primary);
}

.cs-tab.active {
    color: var(--cs-accent);
    border-bottom-color: var(--cs-accent);
}

.cs-tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    margin-left: 6px;
    background: var(--cs-accent-light);
    color: var(--cs-accent);
    border-radius: 9px;
    font-size: 11px;
    font-weight: 700;
}

.cs-tab.active .cs-tab-count {
    background: var(--cs-accent);
    color: var(--cs-accent-text);
}

/* ---- Content area ---- */
.cs-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px 28px;
}

/* ---- Alerts ---- */
.cs-alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--cs-radius-sm);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 16px;
}

.cs-alert-error {
    background: var(--cs-danger-light);
    color: var(--cs-danger);
    border: 1px solid rgba(229, 72, 77, 0.15);
}

.cs-alert-info {
    background: var(--cs-accent-light);
    color: var(--cs-accent);
    border: 1px solid rgba(99, 130, 255, 0.15);
}

.cs-alert-success {
    background: var(--cs-success-light);
    color: var(--cs-success);
    border: 1px solid rgba(48, 164, 108, 0.15);
}

.cs-alert-text {
    flex: 1;
}

.cs-alert-close {
    background: none;
    border: none;
    font-size: 16px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.6;
    color: inherit;
    flex-shrink: 0;
}

.cs-alert-close:hover {
    opacity: 1;
}

/* ---- Cards ---- */
.cs-card {
    background: var(--cs-card-bg);
    border: 1px solid var(--cs-card-border);
    border-radius: var(--cs-radius-lg);
    box-shadow: var(--cs-card-shadow);
    margin-bottom: 20px;
}

.cs-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--cs-card-border);
}

.cs-card-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--cs-text-primary);
}

.cs-card-body {
    padding: 20px;
}

.cs-card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--cs-card-border);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ---- Form grid ---- */
.cs-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.cs-form-grid .cs-field-full {
    grid-column: 1 / -1;
    min-width: 0;
}

/* ---- Form fields ---- */
.cs-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.cs-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--cs-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cs-label-optional {
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    color: var(--cs-text-muted);
    font-size: 11px;
}

.cs-input,
.cs-select {
    padding: 9px 12px;
    border: 1px solid var(--cs-input-border);
    border-radius: var(--cs-radius-sm);
    font-size: 13px;
    font-family: var(--cs-font);
    background: var(--cs-input-bg);
    color: var(--cs-text-primary);
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none;
}

.cs-input:focus,
.cs-select:focus {
    border-color: var(--cs-input-focus);
    box-shadow: 0 0 0 3px rgba(99, 130, 255, 0.15);
}

.cs-input::placeholder {
    color: var(--cs-text-muted);
}

.cs-select {
    cursor: pointer;
    appearance: auto;
}

.cs-hint {
    font-size: 11px;
    color: var(--cs-text-muted);
    line-height: 1.4;
}

.cs-hint code {
    font-family: var(--cs-font-mono);
    font-size: 11px;
    background: #f0f1f5;
    padding: 1px 4px;
    border-radius: 3px;
}

/* ---- Text resolved display ---- */
.cs-text-resolved {
    background: var(--cs-accent-light);
    border: 1px solid var(--cs-input-border);
    border-radius: var(--cs-radius-sm);
    padding: 8px 12px;
    margin-bottom: 6px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cs-text-resolved-value {
    font-size: 14px;
    color: var(--cs-text-primary);
    line-height: 1.4;
}

.cs-text-resolved-key {
    font-size: 11px;
    font-family: var(--cs-font-mono);
    color: var(--cs-text-muted);
}

/* ---- Text picker (filter + dropdown) ---- */
.cs-text-picker {
    display: flex;
    gap: 4px;
}

.cs-input-filter {
    font-size: 12px !important;
    padding: 5px 10px !important;
    background: var(--cs-content-bg);
    border-color: var(--cs-input-border);
    flex: 0 0 140px;
}

.cs-input-filter::placeholder {
    font-style: italic;
}

.cs-select-texts {
    font-size: 13px;
    flex: 1;
    min-width: 0;
}

.cs-select-texts option {
    padding: 4px 8px;
}

/* ---- Buttons ---- */
.cs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    border: none;
    border-radius: var(--cs-radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--cs-font);
    cursor: pointer;
    transition: background 0.15s, opacity 0.15s;
}

.cs-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

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

.cs-btn-primary:hover:not(:disabled) {
    background: var(--cs-accent-hover);
}

.cs-btn-publish {
    background: #0d6efd;
    color: #fff;
}

.cs-btn-publish:hover:not(:disabled) {
    background: #0b5ed7;
}

.cs-btn-danger {
    background: var(--cs-danger);
    color: #fff;
}

.cs-btn-danger:hover:not(:disabled) {
    background: var(--cs-danger-hover);
}

.cs-btn-ghost {
    background: transparent;
    color: var(--cs-text-secondary);
    border: 1px solid var(--cs-card-border);
}

.cs-btn-ghost:hover:not(:disabled) {
    background: #f0f1f5;
    color: var(--cs-text-primary);
}

.cs-btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}

.cs-btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: cs-spin 0.6s linear infinite;
}

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

.cs-close-btn {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--cs-text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--cs-radius-sm);
    transition: background 0.12s, color 0.12s;
    line-height: 1;
}

.cs-close-btn:hover {
    background: #f0f1f5;
    color: var(--cs-text-primary);
}

/* ---- Badges ---- */
.cs-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.cs-badge-global {
    background: var(--cs-accent-light);
    color: var(--cs-accent);
}

.cs-badge-invited {
    background: var(--cs-warning-light);
    color: #b87a00;
}

.cs-badge-module {
    background: #f0f1f5;
    color: var(--cs-text-secondary);
}

/* ---- Step cards ---- */
.cs-step-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cs-step-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--cs-card-bg);
    border: 1px solid var(--cs-card-border);
    border-radius: var(--cs-radius);
    transition: box-shadow 0.15s;
}

.cs-step-card:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.cs-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--cs-accent-light);
    color: var(--cs-accent);
    font-size: 12px;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

.cs-step-info {
    flex: 1;
    min-width: 0;
}

.cs-step-module {
    font-size: 13px;
    font-weight: 600;
    color: var(--cs-text-primary);
}

.cs-step-params {
    font-size: 12px;
    color: var(--cs-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}

.cs-step-time {
    font-size: 12px;
    color: var(--cs-text-secondary);
    font-weight: 500;
    flex-shrink: 0;
    white-space: nowrap;
}

.cs-step-card.editing {
    border-color: var(--cs-accent);
    box-shadow: 0 0 0 2px rgba(99, 130, 255, 0.15);
}

.cs-step-edit,
.cs-step-delete {
    background: none;
    border: none;
    color: var(--cs-text-muted);
    font-size: 16px;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--cs-radius-sm);
    transition: background 0.12s, color 0.12s;
    flex-shrink: 0;
    line-height: 1;
}

.cs-step-edit:hover {
    background: var(--cs-accent-light);
    color: var(--cs-accent);
}

.cs-step-delete:hover {
    background: var(--cs-danger-light);
    color: var(--cs-danger);
}

/* ---- Data tables ---- */
.cs-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 13px;
}

.cs-table thead th {
    text-align: left;
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--cs-text-muted);
    border-bottom: 1px solid var(--cs-card-border);
}

.cs-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid #f0f1f5;
    color: var(--cs-text-primary);
}

.cs-table tbody tr:last-child td {
    border-bottom: none;
}

.cs-table tbody tr:hover {
    background: #f9f9fc;
}

/* ---- Participant tabs ---- */
.cs-participant-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    border: 1px solid var(--cs-card-border);
    border-radius: var(--cs-radius-sm);
    overflow: hidden;
}

.cs-participant-tab {
    flex: 1;
    padding: 9px 12px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    background: var(--cs-card-bg);
    color: var(--cs-text-secondary);
    border: none;
    border-right: 1px solid var(--cs-card-border);
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
}

.cs-participant-tab:last-child {
    border-right: none;
}

.cs-participant-tab:hover {
    background: #f0f1f5;
}

.cs-participant-tab.active {
    background: var(--cs-accent);
    color: var(--cs-accent-text);
}

/* ---- Search row ---- */
.cs-search-row {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.cs-search-row .cs-field {
    flex: 1;
}

.cs-search-row .cs-btn {
    align-self: flex-end;
    margin-bottom: 0;
}

/* ---- Inline help note ---- */
.cs-note {
    font-size: 12px;
    color: var(--cs-text-muted);
    line-height: 1.5;
    padding: 8px 12px;
    background: #f9f9fc;
    border-radius: var(--cs-radius-sm);
    border: 1px dashed var(--cs-card-border);
}

.cs-note code {
    font-family: var(--cs-font-mono);
    font-size: 11px;
    background: #ecedf2;
    padding: 1px 4px;
    border-radius: 3px;
}

/* ---- Section divider inside card ---- */
.cs-section-divider {
    border: none;
    border-top: 1px solid var(--cs-card-border);
    margin: 16px 0;
}

/* ---- Challenge ID display (after create/load) ---- */
.cs-challenge-id {
    font-size: 12px;
    color: var(--cs-text-muted);
    font-family: var(--cs-font-mono);
}

/* ---- Empty state ---- */
.cs-empty {
    text-align: center;
    padding: 32px 16px;
    color: var(--cs-text-muted);
    font-size: 13px;
}

.cs-empty-icon {
    font-size: 32px;
    margin-bottom: 8px;
    opacity: 0.4;
}

/* ---- Toggle/collapsible ---- */
.cs-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    font-size: 12px;
    font-weight: 600;
    color: var(--cs-accent);
    cursor: pointer;
    padding: 4px 0;
}

.cs-toggle-btn:hover {
    text-decoration: underline;
}

/* ---- Icon picker ---- */
.cs-icon-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    margin-top: 6px;
}

.cs-icon-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 4px 8px;
    background: var(--cs-sidebar-bg);
    border: 2px solid transparent;
    border-radius: var(--cs-radius);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.cs-icon-tile:hover {
    border-color: rgba(99, 130, 255, 0.4);
}

.cs-icon-tile.selected {
    border-color: var(--cs-accent);
    box-shadow: 0 0 0 2px rgba(99, 130, 255, 0.2);
}

.cs-icon-tile img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.cs-icon-tile-label {
    font-size: 10px;
    color: var(--cs-sidebar-text);
    text-align: center;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.cs-icon-tile.selected .cs-icon-tile-label {
    color: var(--cs-sidebar-text-bright);
}

.cs-icon-custom {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cs-icon-custom .cs-input {
    flex: 1;
}

.cs-icon-preview {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--cs-sidebar-bg);
    border-radius: var(--cs-radius-sm);
    flex-shrink: 0;
}

.cs-icon-preview img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

/* ---- Image picker ---- */
.cs-image-picker {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
}

.cs-image-picker .cs-select {
    width: 100%;
}

.cs-image-picker .cs-input {
    width: 100%;
}

/* ---- Video picker ---- */
.cs-video-picker {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}

.cs-video-picker .cs-select {
    width: 100%;
}

.cs-video-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 10px 14px;
    background: #f9f9fc;
    border: 1px solid var(--cs-card-border);
    border-radius: var(--cs-radius-sm);
}

.cs-video-info-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--cs-text-primary);
}

.cs-video-info-desc {
    font-size: 12px;
    color: var(--cs-text-secondary);
    line-height: 1.4;
}

.cs-video-info-id {
    font-size: 11px;
    font-family: var(--cs-font-mono);
    color: var(--cs-text-muted);
    margin-top: 2px;
}

.cs-video-manual {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cs-video-manual .cs-input {
    flex: 1;
}

/* ---- Template cards (Quick Challenge) ---- */
.cs-template-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.cs-template-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 32px 20px;
    background: var(--cs-card-bg);
    border: 2px solid var(--cs-card-border);
    border-radius: var(--cs-radius-lg);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
    text-align: center;
}

.cs-template-card:hover {
    border-color: rgba(99, 130, 255, 0.4);
    box-shadow: 0 2px 8px rgba(99, 130, 255, 0.1);
}

.cs-template-card.selected {
    border-color: var(--cs-accent);
    box-shadow: 0 0 0 3px rgba(99, 130, 255, 0.2);
}

.cs-template-icon {
    font-size: 40px;
    line-height: 1;
}

.cs-template-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--cs-text-primary);
}

.cs-template-desc {
    font-size: 13px;
    color: var(--cs-text-muted);
    line-height: 1.4;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .cs-page {
        flex-direction: column;
    }

    .cs-sidebar {
        width: 100%;
        min-width: 100%;
        max-height: 200px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .cs-sidebar-list {
        display: flex;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 4px 8px;
        gap: 4px;
    }

    .cs-sidebar-item {
        flex-shrink: 0;
        padding: 6px 12px;
        border-left: none;
        border-bottom: 2px solid transparent;
        border-radius: var(--cs-radius-sm);
    }

    .cs-sidebar-item.active {
        border-left-color: transparent;
        border-bottom-color: var(--cs-accent);
        background: var(--cs-sidebar-active);
    }

    .cs-header {
        padding: 12px 16px;
    }

    .cs-tabs {
        padding: 0 16px;
    }

    .cs-content {
        padding: 16px;
    }

    .cs-form-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .cs-tabs {
        overflow-x: auto;
    }

    .cs-tab {
        padding: 10px 14px;
        white-space: nowrap;
    }
}