:root {
    color-scheme: dark;
    --ui-bg-top: #07131f;
    --ui-bg-mid: #0d1830;
    --ui-bg-bottom: #050917;
    --ui-panel: rgba(8, 20, 38, 0.82);
    --ui-panel-strong: rgba(5, 14, 28, 0.92);
    --ui-surface: rgba(255, 255, 255, 0.05);
    --ui-line: rgba(181, 220, 255, 0.16);
    --ui-line-strong: rgba(82, 226, 255, 0.32);
    --ui-text: #f6fbff;
    --ui-muted: #aebfd1;
    --ui-accent: #66e5ff;
    --ui-accent-2: #8bf6c2;
    --ui-warn: #ffd166;
    --ui-danger: #ff6b7f;
    --ui-radius-lg: 24px;
    --ui-radius-md: 18px;
    --ui-radius-sm: 12px;
    --ui-shadow: 0 24px 72px rgba(0, 0, 0, 0.36);
    --ui-font: "Segoe UI Variable Display", "Segoe UI", "Noto Sans KR", sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
    margin: 0;
}

body {
    color: var(--ui-text);
    font-family: var(--ui-font);
    background:
        radial-gradient(circle at 16% 16%, rgba(102, 229, 255, 0.18), transparent 24%),
        radial-gradient(circle at 84% 14%, rgba(139, 246, 194, 0.11), transparent 22%),
        radial-gradient(circle at 50% 120%, rgba(102, 229, 255, 0.08), transparent 36%),
        linear-gradient(180deg, var(--ui-bg-top) 0%, var(--ui-bg-mid) 52%, var(--ui-bg-bottom) 100%);
}

a {
    color: inherit;
}

.page-header {
    position: relative;
    display: grid;
    gap: 14px;
    padding: 28px;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-lg);
    background:
        linear-gradient(145deg, rgba(102, 229, 255, 0.16), rgba(255, 255, 255, 0.02) 28%, rgba(5, 14, 28, 0.92) 78%),
        var(--ui-panel-strong);
    box-shadow: var(--ui-shadow);
    overflow: hidden;
}

.page-header::after {
    content: "";
    position: absolute;
    inset: auto -8% -48% auto;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(102, 229, 255, 0.22), transparent 62%);
    pointer-events: none;
}

.page-header-row {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

.page-header-copy {
    display: grid;
    gap: 10px;
    max-width: 760px;
}

.page-eyebrow {
    display: inline-flex;
    width: fit-content;
    min-height: 30px;
    align-items: center;
    padding: 0 12px;
    border: 1px solid rgba(139, 246, 194, 0.28);
    border-radius: 999px;
    background: rgba(139, 246, 194, 0.1);
    color: var(--ui-accent-2);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.page-title {
    margin: 0;
    font-size: clamp(38px, 7vw, 68px);
    line-height: 0.96;
    letter-spacing: -0.03em;
}

.page-subtitle {
    margin: 0;
    color: var(--ui-muted);
    font-size: 16px;
    line-height: 1.7;
}

.page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.panel {
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-md);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
        var(--ui-panel);
    box-shadow: var(--ui-shadow);
    backdrop-filter: blur(14px);
}

.badge,
.chip {
    display: inline-flex;
    width: fit-content;
    min-height: 30px;
    align-items: center;
    padding: 0 12px;
    border: 1px solid rgba(102, 229, 255, 0.18);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--ui-muted);
    font-size: 12px;
    font-weight: 800;
}

.badge-accent {
    border-color: rgba(139, 246, 194, 0.28);
    background: rgba(139, 246, 194, 0.1);
    color: var(--ui-accent-2);
}

button,
a.button,
.button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    border: 1px solid transparent;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--ui-accent), #7ef0ff);
    color: #03111c;
    font: inherit;
    font-size: 14px;
    font-weight: 900;
    text-decoration: none;
    cursor: pointer;
    box-shadow: none;
    transition: transform 160ms ease, border-color 160ms ease;
}

button:hover,
button:focus-visible,
a.button:hover,
a.button:focus-visible,
.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
    outline: none;
}

button.secondary,
a.button.secondary,
.button.secondary {
    border-color: var(--ui-line);
    background: rgba(255, 255, 255, 0.06);
    color: var(--ui-text);
    box-shadow: none;
}

button.danger,
a.button.danger,
.button.danger {
    background: linear-gradient(135deg, #ff7f91, var(--ui-danger));
    color: #24050b;
}

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

.ranking-item {
    display: grid;
    grid-template-columns: 32px 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 12px 14px;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-sm);
    background: var(--ui-surface);
}

.ranking-rank {
    color: var(--ui-warn);
    font-weight: 900;
    text-align: center;
}

.ranking-name {
    font-weight: 800;
}

.ranking-score {
    color: var(--ui-accent);
    font-weight: 900;
}

.ranking-empty {
    padding: 16px;
    border: 1px dashed var(--ui-line);
    border-radius: var(--ui-radius-sm);
    color: var(--ui-muted);
    background: rgba(255, 255, 255, 0.03);
    text-align: center;
}

.muted {
    color: var(--ui-muted);
}

@media (max-width: 720px) {
    .page-header {
        padding: 22px 18px;
        border-radius: 20px;
    }

    .page-title {
        font-size: clamp(34px, 11vw, 54px);
    }
}