/* Modern minimal dark theme */
:root {
    --bg: #0d1117;
    --bg-panel: #111827;
    --bg-subtle: #0b1320;
    --border: #1f2a3a;
    --border-strong: #293445;
    --text: #e6ebf2;
    --muted: #9aa6b8;
    --accent: #f97316;
    --accent-2: #38bdf8;
    --success: #34d399;
    --warning: #facc15;
    --error: #f43f5e;
    --radius: 12px;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    --gap: 22px;
    --font: "Segoe UI", "SF Pro Display", "Inter", system-ui, -apple-system, sans-serif;
}

.light {
    --bg: #f5f7fb;
    --bg-panel: #ffffff;
    --bg-subtle: #eef2f7;
    --border: #d6dde8;
    --border-strong: #c6cfdb;
    --text: #0f172a;
    --muted: #4b5563;
    --accent: #2563eb;
    --accent-2: #0ea5e9;
    --success: #16a34a;
    --warning: #f59e0b;
    --error: #dc2626;
    --shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    font-family: var(--font);
    background: radial-gradient(circle at 15% 20%, rgba(56, 189, 248, 0.08), transparent 35%),
        radial-gradient(circle at 80% 0%, rgba(249, 115, 22, 0.08), transparent 30%),
        var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
    scroll-behavior: smooth;
}

/* Hide scrollbars (WebKit) */
html::-webkit-scrollbar,
body::-webkit-scrollbar {
    width: 0;
    height: 0;
}

.container {
    max-width: none;
    width: 100%;
    margin: 0 auto 48px;
    padding: 20px 16px 0;
}

h1,
h2,
h3,
h4 {
    color: var(--text);
    margin: 0 0 12px;
    letter-spacing: 0.01em;
}

p {
    margin: 0 0 12px;
    color: var(--muted);
}

.section {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 14px;
    box-shadow: var(--shadow);
}

.header-banner {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 10px 14px;
    background: rgba(17, 24, 39, 0.8);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
}

.logo {
    height: 42px;
    width: auto;
    object-fit: contain;
}

.banner-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.banner-btn {
    background: var(--bg-subtle);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, border-color 0.2s ease, background 0.2s ease;
}

.banner-btn:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
}

.input-mode-selector {
    display: flex;
    gap: 12px;
    margin: 12px 0 28px;
    justify-content: center;
    flex-wrap: wrap;
}

.mode-button {
    padding: 14px 20px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--muted);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 15px;
    font-weight: 600;
    min-width: 220px;
    text-align: center;
}

.mode-button.active {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(56, 189, 248, 0.12));
    color: var(--text);
}

.mode-button:hover:not(.active) {
    border-color: var(--accent);
    color: var(--text);
}

.auth-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.auth-card {
    width: min(420px, 90vw);
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.auth-card h2 {
    margin: 0 0 6px;
}

.auth-subtitle {
    margin: 0 0 16px;
    color: var(--muted);
}

.auth-card form {
    display: grid;
    gap: 8px;
}

.auth-card input[type="text"],
.auth-card input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
}

.auth-card button[type="submit"] {
    width: 100%;
    margin-top: 6px;
}

.auth-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.link-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    padding: 0;
    font-weight: 700;
}

.auth-notes {
    margin-top: 12px;
    font-size: 12px;
    color: var(--muted);
}

.auth-status {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
}

.change-password-panel {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    margin-top: 8px;
}

.cp-grid {
    display: grid;
    gap: 8px;
}

.cp-grid input {
    width: 100%;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
}

.cp-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.success {
    color: var(--success);
    margin-top: 8px;
}

.drop-area {
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
    transition: all 0.2s ease;
    cursor: pointer;
}

.drop-area:hover,
.drop-area.active {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.05);
}

.station-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.operator-group {
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 10px;
    overflow: hidden;
}

.operator-header {
    background: var(--bg-subtle);
    padding: 10px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.operator-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--muted);
}

.operator-analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.operator-create {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.operator-create input {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-subtle);
    color: var(--text);
}

.operator-create button {
    padding: 8px 12px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.operator-analysis-content {
    margin-top: 12px;
}

.operator-error-table {
    margin-top: 16px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
}

.operator-error-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.operator-error-header {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.operator-error-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.operator-error-table th,
.operator-error-table td {
    padding: 6px 8px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.operator-error-table th {
    color: var(--muted);
    font-weight: 600;
}

.operator-error-table tr:last-child td {
    border-bottom: none;
}

.operator-error-table button {
    padding: 6px 10px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.operator-error-table button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.operator-create button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.operator-actions button {
    padding: 8px 12px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.operator-actions button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.operator-stations {
    padding: 10px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 8px;
    background: var(--bg-panel);
}

.charts-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 14px;
}

.charts-layout .chart-nav {
    position: sticky;
    top: 80px;
    align-self: flex-start;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
    box-shadow: var(--shadow);
}

.chart-nav-title {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.chart-nav-btn {
    width: 100%;
    text-align: left;
    margin-bottom: 6px;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
    font-size: 12px;
}

.chart-nav-btn:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.chart-nav-date {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.chart-nav-date-inputs {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chart-nav-date select {
    width: 100%;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    font-size: 12px;
    margin-bottom: 6px;
}

.chart-nav-date input {
    width: 100%;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    font-size: 12px;
}

.chart-nav-date-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.chart-nav-quick {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.chart-nav-quick button {
    flex: 1 1 45%;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.chart-nav-quick button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.nav-custom-days {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    flex: 1 1 100%;
}

.nav-custom-days input {
    width: 60px;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    font-size: 12px;
    -moz-appearance: textfield;
}

.nav-custom-days input::-webkit-outer-spin-button,
.nav-custom-days input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.nav-custom-days span {
    font-size: 12px;
    color: var(--muted);
}

.chart-nav-date-actions button {
    flex: 1;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.chart-nav-date-actions button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.anomaly-list {
    display: grid;
    gap: 10px;
}

.anomaly-card {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-panel);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.anomaly-card:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.anomaly-title {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}

.anomaly-meta {
    font-size: 12px;
    color: var(--muted);
}

.stop-reason-mapper {
    margin-top: 10px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-panel);
    display: grid;
    gap: 8px;
}

.stop-reason-mapper .mapper-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stop-reason-mapper select {
    flex: 1;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
    font-size: 12px;
}

.stop-reason-mapper button {
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.stop-reason-mapper button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.charts-main {
    min-width: 0;
}

.operator-assign {
    margin-top: 8px;
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
}

.operator-assign select,
.operator-assign input {
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-subtle);
    color: var(--text);
}

.operator-assign button {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.operator-assign button:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.08);
    transform: translateY(-1px);
}

.station-card {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.15s ease, background 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.station-card.selected {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.07);
}

.station-card.updated {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.18), rgba(255, 255, 255, 0));
    border-color: rgba(34, 197, 94, 0.7);
    box-shadow: 0 10px 30px rgba(34, 197, 94, 0.2);
}

.station-card.stale {
    background: linear-gradient(135deg, rgba(250, 204, 21, 0.18), rgba(255, 255, 255, 0));
    border-color: rgba(250, 204, 21, 0.7);
    box-shadow: 0 10px 30px rgba(250, 204, 21, 0.2);
}

.station-name {
    font-weight: 700;
    font-size: 17px;
}

.station-info {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 4px;
}

.station-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 8px;
    margin-top: 12px;
    font-size: 12px;
    color: var(--muted);
}

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

button,
.btn {
    background: var(--accent);
    color: #0d0f14;
    border: 1px solid transparent;
    padding: 11px 18px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

button:hover,
.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 30px rgba(249, 115, 22, 0.25);
}

button:disabled {
    background: #303a4a;
    color: var(--muted);
    cursor: not-allowed;
    box-shadow: none;
}

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

.btn-secondary:hover {
    border-color: var(--accent);
}

input,
select {
    width: 100%;
    padding: 11px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    color: var(--text);
    font-size: 14px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.15);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-subtle);
    border-radius: 12px;
    overflow: hidden;
}

th,
td {
    padding: 12px 14px;
    text-align: left;
}

th {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border);
    color: var(--muted);
    font-weight: 600;
    letter-spacing: 0.01em;
}

td {
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.mapping-container {
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-subtle);
}

.operator-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin: 14px 0;
}

.operator-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tabs {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    margin: 12px 0 10px;
}

.tab {
    padding: 12px 16px;
    cursor: pointer;
    background: var(--bg-subtle);
    color: var(--muted);
    border: none;
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
}

.tab + .tab {
    border-left: 1px solid var(--border);
}

.tab.active {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(249, 115, 22, 0.12));
    color: var(--text);
}

.tab-content {
    display: none;
}

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

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: calc(var(--gap) + 2px);
    margin: 18px 0 26px;
}

.metric-card {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    box-shadow: var(--shadow);
}

.metric-title {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 6px;
}

.metric-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
}

.metric-positive {
    color: var(--success);
}

.metric-warn {
    color: var(--warning);
}

.metric-negative {
    color: var(--error);
}

.metric-accent {
    color: var(--accent);
}

.metric-subvalue {
    font-size: 18px;
}

.metrics-table-wrapper {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px;
    box-shadow: var(--shadow);
}

.metrics-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.metrics-table thead th {
    text-align: left;
    font-weight: 700;
    color: var(--muted);
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.metrics-table tbody td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
}

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

.metrics-table tbody tr:hover {
    background: rgba(249, 115, 22, 0.04);
}

.metric-value-cell {
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}

.metric-note {
    color: var(--muted);
}

.metrics-heatmap {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 12px;
    align-items: start;
}

.metric-stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.heatmap-card {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    box-shadow: var(--shadow);
}

.heatmap-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.heatmap-grid {
    display: grid;
    grid-template-columns: 50px repeat(24, 1fr);
    gap: 4px;
    max-width: 100%;
    overflow-x: auto;
    padding-bottom: 6px;
}

.heatmap-day {
    display: contents;
}

.heatmap-label {
    font-size: 12px;
    color: var(--muted);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 6px;
}

.heatmap-cell {
    height: 18px;
    border-radius: 4px;
    position: relative;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 2px;
    box-sizing: border-box;
}

.heatmap-cell:hover {
    outline: 1px solid var(--accent);
}

.heatmap-hour {
    font-size: 11px;
    color: var(--muted);
    text-align: center;
    white-space: nowrap;
}

.chart-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.chart-range-select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-subtle);
    color: var(--text);
    font-size: 12px;
}

.chart-short {
    height: 240px;
}

.chart-container {
    position: relative;
    height: 320px;
    background: var(--bg-subtle);
    border-radius: 12px;
    padding: 14px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.chart-tall {
    height: 480px;
}

.date-range-inline {
    margin: 12px 0 18px;
}

.sticky-date-range {
    position: sticky;
    top: 56px;
    z-index: 5;
}

.date-filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.date-filter-title {
    font-weight: 700;
    color: var(--text);
    font-size: 16px;
}

.date-filter-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.muted-label {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.date-range-selector {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.date-inputs {
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 10px;
}

.date-input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 170px;
}

.date-input-group label {
    font-size: 12px;
    color: var(--muted);
}

.quick-date-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.quick-date-btn {
    padding: 8px 14px;
    background: var(--bg-panel);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: border-color 0.15s ease, transform 0.1s ease;
}

.quick-date-btn:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.search-bar {
    width: 320px;
}

.database-status {
    background: var(--bg-subtle);
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 18px;
    text-align: center;
    color: var(--muted);
}

.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-online {
    background-color: var(--success);
}

.status-offline {
    background-color: var(--error);
}

.description-section {
    background: var(--bg-panel);
    padding: 22px;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    margin: 24px auto 16px;
    max-width: none;
}

.description-header {
    text-align: center;
    margin-bottom: 24px;
}

.description-header h2 {
    color: var(--text);
    letter-spacing: 0.02em;
}

.description-header p {
    color: var(--muted);
}

.features-grid,
.example-images,
.step-list {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.feature-card,
.example-card {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    transition: border-color 0.2s ease, transform 0.15s ease;
}

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

.feature-icon {
    display: inline-flex;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    background: rgba(249, 115, 22, 0.12);
    color: var(--text);
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 14px;
}

.feature-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.feature-description,
.example-description {
    color: var(--muted);
    font-size: 14px;
}

.usage-steps,
.example-section {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
}

.step-item {
    display: flex;
    gap: 14px;
}

.step-number {
    background: rgba(56, 189, 248, 0.12);
    color: var(--text);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
}

.example-image {
    width: 100%;
    height: 180px;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(249, 115, 22, 0.08));
    border: 1px solid var(--border);
}

.example-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.example-content {
    margin-top: 12px;
}

.example-title {
    font-weight: 700;
    margin-bottom: 6px;
}

.data-format-info {
    background: rgba(249, 115, 22, 0.08);
    border: 1px solid rgba(249, 115, 22, 0.35);
    padding: 16px;
    border-radius: 12px;
    margin-top: 16px;
}

.supported-formats {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.format-badge {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.error {
    color: var(--error);
    background: rgba(244, 63, 94, 0.08);
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid rgba(244, 63, 94, 0.35);
    font-size: 14px;
}

.success {
    color: var(--success);
    background: rgba(52, 211, 153, 0.08);
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid rgba(52, 211, 153, 0.35);
}

.info-panel {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    box-shadow: var(--shadow);
}

.action-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    margin: 16px 0;
}

.layout-split {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap);
}

.split-item {
    flex: 1;
    min-width: 280px;
}

.mt-sm {
    margin-top: 10px;
}

.mt-md {
    margin-top: 18px;
}

.mt-lg {
    margin-top: 28px;
}

.chart-note {
    margin-top: 10px;
    font-size: 12px;
    color: var(--muted);
    text-align: center;
}

.table-scroll {
    overflow-x: auto;
}

.pagination-bar {
    margin-top: 18px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.hidden {
    display: none;
}

.inline-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.inline-link:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        padding: 18px 16px 0;
    }

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

    .banner-controls {
        width: 100%;
        justify-content: flex-end;
        gap: 8px;
    }

    .logo {
        height: 36px;
    }

    .tabs {
        width: 100%;
    }

    .tab {
        flex: 1;
        text-align: center;
    }

    .chart-container {
        height: 260px;
    }

    .metrics-heatmap {
        grid-template-columns: 1fr;
    }

    .charts-layout {
        grid-template-columns: 1fr;
    }

    .charts-layout .chart-nav {
        position: relative;
        top: auto;
    }
}