:root {
    --ev-primary: #6366f1;
    --ev-primary-hover: #4f46e5;
    --ev-success: #10b981;
    --ev-warning: #f59e0b;
    --ev-danger: #ef4444;
    --ev-surface: #ffffff;
    --ev-bg: #f3f4f6;
    --ev-text-main: #1f2937;
    --ev-text-muted: #6b7280;
    --ev-border: #e5e7eb;
    --ev-radius: 8px;
    --ev-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.ev-wrap {
    max-width: 1200px;
    margin: 20px 20px 0 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: var(--ev-text-main);
}

.ev-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.ev-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--ev-text-main);
    margin: 0;
}

/* --- Cards --- */
.ev-card {
    background: var(--ev-surface);
    border-radius: var(--ev-radius);
    box-shadow: var(--ev-shadow);
    border: 1px solid var(--ev-border);
    padding: 24px;
    margin-bottom: 24px;
}

.ev-card-header {
    border-bottom: 1px solid var(--ev-border);
    padding-bottom: 16px;
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 600;
}

/* --- Dashboard Grid --- */
.ev-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.ev-metric-card {
    background: var(--ev-surface);
    padding: 20px;
    border-radius: var(--ev-radius);
    box-shadow: var(--ev-shadow);
    border: 1px solid var(--ev-border);
    display: flex;
    flex-direction: column;
}

.ev-metric-label {
    color: var(--ev-text-muted);
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ev-metric-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--ev-primary);
    margin-top: 8px;
}

/* --- Tabs --- */
.ev-tabs-container {
    display: flex;
    gap: 24px;
}

.ev-tabs-nav {
    width: 240px;
    flex-shrink: 0;
}

.ev-tab-link {
    display: block;
    padding: 12px 16px;
    margin-bottom: 4px;
    border-radius: var(--ev-radius);
    color: var(--ev-text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.ev-tab-link:hover {
    background: var(--ev-bg);
    color: var(--ev-primary);
}

.ev-tab-link.active {
    background: #eef2ff;
    color: var(--ev-primary);
    border-left-color: var(--ev-primary);
}

.ev-tab-content {
    flex-grow: 1;
    background: var(--ev-surface);
    border-radius: var(--ev-radius);
    padding: 32px;
    box-shadow: var(--ev-shadow);
}

.ev-tab-pane {
    display: none;
}

.ev-tab-pane.active {
    display: block;
}

/* --- Toggles (Checkbox replacement) --- */
.ev-toggle-wrapper {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    vertical-align: middle;
    margin-right: 10px;
}

.ev-toggle-input {
    opacity: 0;
    width: 0;
    height: 0;
}

.ev-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e5e7eb;
    transition: .4s;
    border-radius: 24px;
}

.ev-toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

.ev-toggle-input:checked + .ev-toggle-slider {
    background-color: var(--ev-primary);
}

.ev-toggle-input:checked + .ev-toggle-slider:before {
    transform: translateX(20px);
}

/* --- Forms --- */
.ev-form-group {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--ev-bg);
}

.ev-form-group:last-child {
    border-bottom: none;
}

.ev-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--ev-text-main);
}

.ev-description {
    color: var(--ev-text-muted);
    font-size: 13px;
    margin-top: 6px;
    line-height: 1.5;
}

/* --- Buttons --- */
.ev-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

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

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

/* --- Empty State --- */
.ev-empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--ev-surface);
    border-radius: var(--ev-radius);
    border: 2px dashed var(--ev-border);
}

.ev-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    color: var(--ev-text-muted);
}

.ev-empty-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.ev-empty-text {
    color: var(--ev-text-muted);
    margin-bottom: 24px;
}

/* --- Utilities --- */
.ev-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.ev-badge-success { background: #d1fae5; color: #065f46; }
.ev-badge-warning { background: #fef3c7; color: #92400e; }
.ev-badge-neutral { background: #f3f4f6; color: #374151; }