:root {
    --bg: #f6f8fb;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #64748b;
    --line: #e2e8f0;
    --city-a: #2563eb;
    --city-a-soft: #dbeafe;
    --city-b: #8b5cf6;
    --city-b-soft: #ede9fe;
    --good: #15803d;
    --good-bg: #dcfce7;
    --normal: #c2410c;
    --normal-bg: #ffedd5;
    --bad: #b91c1c;
    --bad-bg: #fee2e2;
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background:
        linear-gradient(90deg, rgba(37, 99, 235, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px),
        var(--bg);
    background-size: 42px 42px, 42px 42px, auto;
    animation: dashboardGridDrift 18s linear infinite;
    color: var(--text);
    font-family: "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
}

.hero {
    background: #ffffff;
    border-bottom: 1px solid var(--line);
    overflow: hidden;
    position: relative;
}

.hero::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--city-a), #14b8a6, var(--city-b), var(--city-a));
    background-size: 200% 100%;
    animation: signalSweep 4.5s linear infinite;
}

.top-nav {
    display: flex;
    justify-content: flex-end;
    max-width: 1180px;
    margin: 0 auto;
    padding: 18px 24px 0;
}

.back-link {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
}

.hero-content {
    max-width: 1180px;
    margin: 0 auto;
    padding: 44px 24px 54px;
    animation: heroRise 650ms ease-out both;
}

.eyebrow {
    margin: 0 0 8px;
    color: #2563eb;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 16px;
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 1.05;
}

h2 {
    margin-bottom: 8px;
    font-size: 1.25rem;
}

h3 {
    margin-bottom: 18px;
    font-size: 1rem;
}

.hero-copy {
    max-width: 820px;
    margin-bottom: 0;
    color: var(--muted);
    font-size: 1.05rem;
}

.dashboard-shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 28px 24px 56px;
}

.notice-card,
.card,
.summary-strip {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.card,
.notice-card,
.summary-strip {
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.card:hover,
.notice-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 22px 55px rgba(15, 23, 42, 0.12);
}

.notice-card {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 16px 18px;
    color: #334155;
}

.notice-card strong {
    flex: 0 0 auto;
    color: #0f172a;
}

.error-panel {
    margin-bottom: 18px;
    padding: 14px 16px;
    border: 1px solid #fecaca;
    border-radius: 8px;
    background: #fef2f2;
    color: #991b1b;
    font-weight: 700;
}

.control-grid,
.chart-grid,
.description-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.description-grid {
    margin-bottom: 20px;
}

.single-control {
    align-items: stretch;
}

.card {
    padding: 22px;
}

.section-heading {
    margin-bottom: 18px;
}

.upload-heading-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
}

.upload-heading-row .section-heading {
    margin-bottom: 0;
}

.make-stats-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    min-height: 38px;
    padding: 0 14px;
    border: 1px solid rgba(37, 99, 235, 0.25);
    border-radius: 8px;
    background: var(--city-a);
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.18);
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.make-stats-link:hover {
    background: #1d4ed8;
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.24);
    transform: translateY(-1px);
}

.drop-zone {
    display: grid;
    place-items: center;
    min-height: 220px;
    padding: 26px;
    border: 2px dashed #bfdbfe;
    border-radius: 8px;
    background: #f8fbff;
    color: #334155;
    text-align: center;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    transition: border-color 220ms ease, background 220ms ease, transform 220ms ease;
}

.drop-zone::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 0%, rgba(37, 99, 235, 0.08) 48%, transparent 58%);
    transform: translateX(-120%);
}

.drop-zone:hover {
    transform: translateY(-2px);
}

.drop-zone:hover::before,
.drop-zone.is-loading::before {
    animation: uploadSweep 1.4s ease-in-out infinite;
}

.drop-zone.dragover {
    border-color: var(--city-a);
    background: #eff6ff;
}

.drop-zone input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.upload-icon {
    display: inline-grid;
    place-items: center;
    width: 56px;
    height: 56px;
    margin-bottom: 12px;
    border-radius: 8px;
    background: var(--city-a-soft);
    color: var(--city-a);
    font-weight: 900;
    animation: iconPulse 2.2s ease-in-out infinite;
}

.drop-zone small {
    display: block;
    margin-top: 8px;
    color: var(--muted);
}

.file-status,
.benchmark-description {
    margin-top: 14px;
    color: var(--muted);
    font-size: 0.92rem;
}

.standard-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.standard-value {
    margin: 8px 0 10px;
    color: #0f172a;
    font-size: clamp(2.2rem, 6vw, 4.25rem);
    font-weight: 900;
    line-height: 1;
    animation: valuePulse 3s ease-in-out infinite;
}

.standard-value span {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 1rem;
    font-weight: 800;
}

.benchmark-options {
    display: grid;
    gap: 10px;
}

.benchmark-options label {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 4px 10px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
}

.benchmark-options small,
.benchmark-options input[type="number"] {
    grid-column: 2;
}

.benchmark-options input[type="number"] {
    width: min(100%, 220px);
    margin-top: 6px;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 7px;
    font: inherit;
}

.results {
    margin-top: 18px;
    animation: resultsEnter 420ms ease-out both;
}

.summary-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-bottom: 18px;
    overflow: hidden;
}

.summary-strip div {
    padding: 16px 18px;
}

.summary-strip span {
    display: block;
    color: var(--muted);
    font-size: 0.84rem;
}

.summary-strip strong {
    display: block;
    margin-top: 4px;
    font-size: 1.25rem;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 18px;
}

.city-card {
    border-top: 5px solid var(--city-a);
}

.city-card.city-b {
    border-top-color: var(--city-b);
}

.city-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
}

.city-card h2 {
    margin: 0;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 800;
    animation: badgeSettle 480ms ease-out both;
}

.badge.good {
    background: var(--good-bg);
    color: var(--good);
}

.badge.normal {
    background: var(--normal-bg);
    color: var(--normal);
}

.badge.bad {
    background: var(--bad-bg);
    color: var(--bad);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.metric {
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #f8fafc;
    position: relative;
    overflow: hidden;
}

.metric::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 2px;
    width: var(--metric-line, 0%);
    background: linear-gradient(90deg, var(--city-a), #14b8a6);
    transition: width 900ms ease;
}

.metric span {
    display: block;
    color: var(--muted);
    font-size: 0.8rem;
}

.metric strong {
    display: block;
    margin-top: 4px;
    font-size: 1.05rem;
}

.interpretation-card {
    margin-bottom: 18px;
}

.diagnostic-card {
    margin-bottom: 18px;
}

.diagnostic-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.diagnostic-item {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #f8fafc;
}

.diagnostic-item h3 {
    margin: 0;
}

.diagnostic-item ul {
    margin: 0;
    padding-left: 18px;
    color: #334155;
}

.diagnostic-item li + li {
    margin-top: 8px;
}

.feature-list {
    margin: 0;
    padding-left: 18px;
    color: #334155;
}

.feature-list li + li {
    margin-top: 9px;
}

.interpretation p {
    margin-bottom: 10px;
}

.interpretation p:last-child {
    margin-bottom: 0;
}

.chart-grid {
    margin-bottom: 18px;
}

.chart-card.wide {
    grid-column: span 2;
}

.chart-box {
    position: relative;
    height: 320px;
}

.benchmark-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 9px 14px;
    margin-top: 12px;
    color: #475569;
    font-size: 0.86rem;
}

.benchmark-legend span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.benchmark-legend i {
    display: inline-block;
    width: 24px;
    height: 12px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 4px;
    background: var(--legend-color);
}

.reveal-item {
    opacity: 0;
    transform: translateY(16px);
}

.reveal-item.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 520ms ease, transform 520ms ease;
    transition-delay: var(--reveal-delay, 0ms);
}

.is-updating {
    animation: softFlash 520ms ease-out;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 820px;
}

th,
td {
    padding: 11px 10px;
    border-bottom: 1px solid var(--line);
    text-align: right;
    font-size: 0.92rem;
}

th {
    background: #f8fafc;
    color: #334155;
    font-size: 0.82rem;
}

th:first-child,
td:first-child,
th:nth-child(2),
td:nth-child(2) {
    text-align: left;
}

@media (max-width: 860px) {
    .control-grid,
    .chart-grid,
    .description-grid,
    .kpi-grid,
    .diagnostic-grid,
    .summary-strip {
        grid-template-columns: 1fr;
    }

    .chart-card.wide {
        grid-column: span 1;
    }

    .notice-card {
        display: block;
    }

    .notice-card strong {
        display: block;
        margin-bottom: 6px;
    }
}

@media (max-width: 560px) {
    .dashboard-shell,
    .hero-content,
    .top-nav {
        padding-left: 16px;
        padding-right: 16px;
    }

    .metric-grid {
        grid-template-columns: 1fr;
    }

    .upload-heading-row {
        flex-direction: column;
        align-items: stretch;
    }

    .make-stats-link {
        width: 100%;
    }

    .chart-box {
        height: 280px;
    }
}

@keyframes dashboardGridDrift {
    from {
        background-position: 0 0, 0 0, 0 0;
    }
    to {
        background-position: 42px 42px, 42px 42px, 0 0;
    }
}

@keyframes signalSweep {
    from {
        background-position: 0% 0;
    }
    to {
        background-position: 200% 0;
    }
}

@keyframes heroRise {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes uploadSweep {
    from {
        transform: translateX(-120%);
    }
    to {
        transform: translateX(120%);
    }
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.04);
    }
}

@keyframes valuePulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.82;
    }
}

@keyframes badgeSettle {
    from {
        transform: scale(0.92);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes resultsEnter {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes softFlash {
    from {
        background-color: #eff6ff;
    }
    to {
        background-color: transparent;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 1ms !important;
    }
}