:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #18202a;
    --muted: #657083;
    --border: #e4e8ef;
    --accent: #23395d;
    --accent-soft: #eef3fb;
    --danger: #9b1c1c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

.container {
    width: min(1220px, calc(100% - 32px));
    margin: 32px auto;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 24px;
    margin-bottom: 22px;
    box-shadow: 0 12px 30px rgba(24, 32, 42, 0.06);
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
    align-items: end;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    font-size: 12px;
}

h1, h2 { margin: 0 0 12px; }
h1 { font-size: clamp(32px, 5vw, 54px); }
h2 { font-size: 24px; }

.subtitle, .note, .small {
    color: var(--muted);
    line-height: 1.55;
}

.search-form {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 12px;
    align-items: end;
}

label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-weight: 700;
    font-size: 13px;
}

input, button {
    width: 100%;
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 12px 14px;
    font-size: 15px;
}

button {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    font-weight: 800;
    cursor: pointer;
}

.section-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.stat {
    background: var(--accent-soft);
    border-radius: 14px;
    padding: 16px;
}

.stat span {
    display: block;
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 6px;
}

.stat strong { font-size: 22px; }

.chart {
    width: 100%;
    display: block;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.error-card {
    color: var(--danger);
    background: #fff7f7;
    border-color: #ffd6d6;
}

@media (max-width: 820px) {
    .hero, .search-form { grid-template-columns: 1fr; }
}