:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-light: #fca5a5;
    --border: #334155;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.logo h1 {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--accent);
}

.header-stats {
    display: flex;
    gap: 24px;
}

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

.header-stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.header-stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tabs {
    display: flex;
    gap: 4px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab {
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.tab:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.tab.active {
    background: var(--accent);
    color: white;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
    transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.stat-card-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.stat-card-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 24px;
    overflow: hidden;
}

.card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group select,
.form-group input {
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group select:focus,
.form-group input:focus {
    border-color: var(--accent);
}

.btn {
    padding: 12px 28px;
    border-radius: 8px;
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.35);
}

.btn-secondary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.5);
}

.btn-secondary::before {
    content: "📄";
    font-size: 1rem;
}

.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.result-box {
    background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    border: 1px solid var(--accent);
    margin-top: 24px;
    display: none;
}

.result-box.visible {
    display: block;
    animation: fadeIn 0.4s ease;
}

.result-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
}

.result-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

.result-detail {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.risk-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.risk-table thead th {
    background: var(--bg-primary);
    padding: 12px 16px;
    text-align: left;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
}

.risk-table tbody tr {
    transition: background 0.15s;
}

.risk-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.risk-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.risk-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.risk-badge.cok-yuksek {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-light);
}

.risk-badge.yuksek {
    background: rgba(245, 158, 11, 0.2);
    color: #fcd34d;
}

.risk-badge.orta {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

.risk-badge.dusuk {
    background: rgba(34, 197, 94, 0.2);
    color: #86efac;
}

.risk-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    min-width: 80px;
}

.risk-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
}

.search-box {
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    width: 250px;
    outline: none;
}

.search-box:focus {
    border-color: var(--accent);
}

.table-scroll {
    max-height: 600px;
    overflow-y: auto;
}

.table-scroll::-webkit-scrollbar {
    width: 6px;
}

.table-scroll::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.chart-container {
    position: relative;
    height: 300px;
    margin: 16px 0;
}

.model-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.model-info-item {
    text-align: center;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: 8px;
}

.model-info-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
}

.model-info-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.importance-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.importance-name {
    width: 250px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: right;
    flex-shrink: 0;
}

.importance-fill {
    height: 24px;
    background: linear-gradient(90deg, var(--accent), #60a5fa);
    border-radius: 4px;
    transition: width 0.6s ease;
    display: flex;
    align-items: center;
    padding-left: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    min-width: 40px;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--text-secondary);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.no-model-warning {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.no-model-warning h3 {
    color: var(--warning);
    margin-bottom: 12px;
}

.no-model-warning code {
    background: var(--bg-primary);
    padding: 8px 16px;
    border-radius: 6px;
    display: inline-block;
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--accent);
}

.district-detail-card {
    background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--accent);
    margin-top: 16px;
    display: none;
}

.district-detail-card.visible {
    display: block;
    animation: fadeIn 0.3s ease;
}

.district-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.district-detail-item {
    text-align: center;
}

.district-detail-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.district-detail-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

footer {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
    margin-top: 48px;
}

@media (max-width: 768px) {
    .header-stats { display: none; }
    .form-grid { grid-template-columns: 1fr; }
    .importance-name { width: 120px; font-size: 0.75rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .container { padding: 0 12px; }
}