:root {
    --kdct-primary-gradient: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
    --kdct-accent-color: #0284c7;
    --kdct-background: #f8fafc;
    --kdct-card-bg: #ffffff;
    --kdct-border: #e2e8f0;
    --kdct-text: #0f172a;
    --kdct-text-muted: #64748b;
    --kdct-success: #10b981;
    --kdct-warning: #f59e0b;
    --kdct-danger: #ef4444;
    --kdct-radius: 12px;
    --kdct-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.kdct-dark {
    --kdct-background: #0f172a;
    --kdct-card-bg: #1e293b;
    --kdct-border: #334155;
    --kdct-text: #f8fafc;
    --kdct-text-muted: #94a3b8;
}

.kdct-main-wrapper {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--kdct-background);
    color: var(--kdct-text);
    padding: 30px;
    border-radius: var(--kdct-radius);
    border: 1px solid var(--kdct-border);
    max-width: 1100px;
    margin: 20px auto;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    transition: var(--kdct-transition);
}

.kdct-main-wrapper * {
    box-sizing: border-box;
}

.kdct-dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--kdct-border);
    padding-bottom: 20px;
    margin-bottom: 25px;
}

.kdct-dashboard-header h2 {
    margin: 0 0 5px 0 !important;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--kdct-text);
}

.kdct-dashboard-header p {
    margin: 0 !important;
    font-size: 14px;
    color: var(--kdct-text-muted);
}

.kdct-action-icon-btn {
    background: var(--kdct-card-bg);
    border: 1px solid var(--kdct-border);
    color: var(--kdct-text);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: var(--kdct-transition);
}

.kdct-action-icon-btn:hover {
    border-color: var(--kdct-accent-color);
    color: var(--kdct-accent-color);
}

.kdct-input-card {
    background: var(--kdct-card-bg);
    border: 1px solid var(--kpct-border);
    border-radius: var(--kdct-radius);
    padding: 24px;
    border: 1px solid var(--kdct-border);
}

.kdct-field-label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
}

.kdct-main-wrapper textarea {
    width: 100% !important;
    height: 180px !important;
    background-color: var(--kdct-background) !important;
    color: var(--kdct-text) !important;
    border: 1px solid var(--kdct-border) !important;
    border-radius: 8px !important;
    padding: 15px !important;
    font-size: 15px !important;
    line-height: 1.6 !important;
    outline: none !important;
    resize: vertical !important;
    transition: var(--kdct-transition) !important;
}

.kdct-main-wrapper textarea:focus {
    border-color: var(--kdct-accent-color) !important;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15) !important;
}

.kdct-button-row {
    display: flex;
    gap: 12px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.kdct-btn {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--kdct-transition);
}

.kdct-btn-gradient {
    background: var(--kdct-primary-gradient);
    color: #ffffff !important;
    border: none;
}

.kdct-btn-gradient:hover {
    opacity: 0.95;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.kdct-btn-outline {
    background: var(--kdct-card-bg);
    color: var(--kdct-text) !important;
    border: 1px solid var(--kdct-border);
}

.kdct-btn-outline:hover {
    border-color: var(--kdct-accent-color);
    color: var(--kdct-accent-color) !important;
}

.kdct-btn-danger {
    background: transparent;
    color: var(--kdct-danger) !important;
    border: 1px solid var(--kdct-danger);
}

.kdct-btn-danger:hover {
    background: var(--kdct-danger);
    color: white !important;
}

.kdct-alert-banner {
    padding: 12px 16px;
    border-radius: 6px;
    margin-top: 15px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(239, 68, 68, 0.12);
    color: var(--kdct-danger);
    border: 1px solid var(--kdct-danger);
}

.kdct-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-top: 25px;
}

.kdct-metric-card {
    background: var(--kdct-card-bg);
    border: 1px solid var(--kdct-border);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    transition: var(--kdct-transition);
}

.kdct-metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.kdct-metric-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--kdct-text-muted);
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 8px;
}

.kdct-metric-card h3 {
    margin: 0 !important;
    font-size: 26px;
    font-weight: 800;
    color: var(--kdct-text);
}

.kdct-text-truncate {
    margin: 0 !important;
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kdct-seo-evaluation-section {
    background: var(--kdct-card-bg);
    border: 1px solid var(--kdct-border);
    border-radius: var(--kdct-radius);
    padding: 24px;
}

.kdct-section-title h4 {
    margin: 0 0 15px 0 !important;
    font-size: 18px;
    font-weight: 700;
}

.kdct-score-flex-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.kdct-radial-score-wrapper {
    width: 100%;
}

.kdct-score-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--kdct-text-muted);
    display: block;
    margin-bottom: 6px;
}

.kdct-score-progress-bar {
    background: var(--kdct-background);
    height: 24px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--kdct-border);
}

.kdct-score-progress-fill {
    height: 100%;
    background: var(--kdct-primary-gradient);
    color: white;
    font-weight: bold;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width 0.4s ease;
}

.kdct-optimization-feedback {
    padding: 15px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
}

.kdct-neutral-state { background: var(--kdct-background); color: var(--kdct-text-muted); border: 1px solid var(--kdct-border); }
.kdct-success-state { background: rgba(16, 185, 129, 0.12); color: var(--kdct-success); border: 1px solid var(--kdct-success); }
.kdct-warning-state { background: rgba(245, 158, 11, 0.12); color: var(--kdct-warning); border: 1px solid var(--kdct-warning); }
.kdct-danger-state { background: rgba(239, 68, 68, 0.12); color: var(--kdct-danger); border: 1px solid var(--kdct-danger); }

.kdct-density-analytics-layout {
    background: var(--kdct-card-bg);
    border: 1px solid var(--kdct-border);
    border-radius: var(--kdct-radius);
    padding: 24px;
}

.kdct-density-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
}

.kdct-density-header-row h4 {
    margin: 0 !important;
    font-size: 18px;
    font-weight: 700;
}

.kdct-phrase-toggle-group {
    display: inline-flex;
    background: var(--kdct-background);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--kdct-border);
}

.kdct-toggle-btn {
    background: transparent;
    border: none;
    color: var(--kdct-text-muted);
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--kdct-transition);
}

.kdct-toggle-btn.kdct-active {
    background: var(--kdct-card-bg);
    color: var(--kdct-accent-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.kdct-table-responsive {
    width: 100%;
    overflow-x: auto;
}

.kdct-analytics-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.kdct-analytics-table th {
    background: var(--kdct-background);
    color: var(--kdct-text);
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    border-bottom: 2px solid var(--kdct-border);
}

.kdct-analytics-table td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--kdct-border);
    color: var(--kdct-text);
}

.kdct-analytics-table tr:last-child td {
    border-bottom: none;
}

.kdct-bar-meter-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.kdct-mini-bar {
    flex-grow: 1;
    background: var(--kdct-background);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.kdct-mini-bar-fill {
    height: 100%;
    background-color: var(--kdct-accent-color);
    border-radius: 4px;
}

.kdct-rank-badge {
    display: inline-block;
    width: 24px;
    height: 24px;
    background: var(--kdct-background);
    border-radius: 50%;
    text-align: center;
    line-height: 24px;
    font-size: 11px;
    font-weight: bold;
}

.kdct-hidden { display: none !important; }
.kdct-mt-20 { margin-top: 20px; }
.kdct-mt-30 { margin-top: 30px; }
.kdct-text-center { text-align: center; }
.kdct-muted-cell { color: var(--kdct-text-muted) !important; padding: 30px !important; }

@media (max-width: 768px) {
    .kdct-dashboard-header { flex-direction: column; align-items: flex-start; gap: 15px; }
    .kdct-action-icon-btn { align-self: flex-end; }
    .kdct-density-header-row { flex-direction: column; align-items: flex-start; }
    .kdct-phrase-toggle-group { width: 100%; }
    .kdct-toggle-btn { flex-grow: 1; text-align: center; }
}