:root {
    --bg: #0b1020;
    --surface: rgba(255, 255, 255, 0.06);
    --surface-2: rgba(255, 255, 255, 0.10);
    --border: rgba(255, 255, 255, 0.14);
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.70);
    --muted-2: rgba(255, 255, 255, 0.55);
    --shadow: 0 10px 35px rgba(0, 0, 0, 0.35);
    --radius: 14px;
    --radius-sm: 10px;
    --max: 980px;
    --brand: #8be9fd;
    --brand-2: #bd93f9;
    --good: #50fa7b;
    --warn: #f1fa8c;
    --bad: #ff5555;
}

html[data-theme="light"] {
    --bg: #f7f8fc;
    --surface: rgba(0, 0, 0, 0.04);
    --surface-2: rgba(0, 0, 0, 0.06);
    --border: rgba(0, 0, 0, 0.10);
    --text: rgba(0, 0, 0, 0.88);
    --muted: rgba(0, 0, 0, 0.66);
    --muted-2: rgba(0, 0, 0, 0.50);
    --shadow: 0 10px 35px rgba(15, 23, 42, 0.16);
    --brand: #0ea5e9;
    --brand-2: #7c3aed;
    --good: #16a34a;
    --warn: #ca8a04;
    --bad: #dc2626;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji",
        "Segoe UI Emoji";
    color: var(--text);
    background-color: var(--bg);
    background-image: radial-gradient(1200px 700px at 20% 0%, rgba(189, 147, 249, 0.18), transparent 55%),
        radial-gradient(1000px 650px at 80% 10%, rgba(139, 233, 253, 0.12), transparent 60%),
        linear-gradient(180deg, var(--bg), var(--bg));
    background-repeat: no-repeat;
    background-size: 1400px 900px, 1200px 800px, auto;
    background-position: 20% 0%, 80% 10%, 0 0;
}

a {
    color: inherit;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

.container {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 18px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    padding: 10px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.skip-link:focus {
    left: 18px;
    top: 12px;
    z-index: 999;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    background: color-mix(in srgb, var(--bg) 75%, transparent);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.2px;
}

.brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border);
    background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 35%, transparent),
            color-mix(in srgb, var(--brand-2) 25%, transparent));
}

.brand-badge img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 8px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
    color: var(--text);
}

.nav a {
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    color: var(--text);
}

.nav a:hover,
.nav a:focus-visible {
    color: var(--text);
    border-color: var(--border);
    background: var(--surface-2);
    outline: none;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn {
    appearance: none;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 12px;
    padding: 10px 12px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: none;
    transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

.btn:focus-visible,
.roll-button:focus-visible,
.nav a:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--brand) 70%, white);
    outline-offset: 2px;
}

.btn:hover {
    background: var(--surface-2);
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 30%, var(--surface)),
            color-mix(in srgb, var(--brand-2) 22%, var(--surface)));
}

.btn-primary:hover {
    background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 38%, var(--surface-2)),
            color-mix(in srgb, var(--brand-2) 28%, var(--surface-2)));
}

main {
    padding: 24px 0 28px;
}

.hero {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 92%, transparent), transparent);
    box-shadow: var(--shadow);
}

.hero h1 {
    margin: 0 0 8px;
    font-size: clamp(26px, 2.8vw, 38px);
}

.hero p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 16px;
}

.stack {
    display: grid;
    gap: 14px;
}

@media (min-width: 720px) {
    .grid {
        grid-template-columns: 1fr;
        align-items: stretch;
    }
}

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

.card h2 {
    margin: 0 0 10px;
    font-size: 18px;
}

.card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.roll-area {
    display: grid;
    gap: 12px;
}

.roll-button {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 12px;
    align-items: center;
    width: 100%;
    text-align: left;
    padding: 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--surface-2), var(--surface));
    color: var(--text);
    font-family: inherit;
    cursor: pointer;
}

.roll-button:hover {
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 90%, var(--brand)), var(--surface));
}

.roll-button img {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: transparent;
}

.roll-button .roll-title {
    font-weight: 800;
}

.roll-button .roll-sub {
    color: var(--muted);
    font-weight: 500;
    margin-top: 2px;
    line-height: 1.4;
}

.results {
    display: grid;
    gap: 10px;
}

.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.stat-chip {
    min-width: 54px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 85%, transparent);
    font-weight: 800;
    letter-spacing: 0.2px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--muted);
    font-size: 13px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 999px;
    padding: 7px 10px;
    border: 1px solid var(--border);
    background: var(--surface);
}

.badge strong {
    color: var(--text);
}

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

.kbd {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    border: 1px solid var(--border);
    border-bottom-color: color-mix(in srgb, var(--border) 55%, transparent);
    background: color-mix(in srgb, var(--surface-2) 65%, transparent);
    border-radius: 8px;
    padding: 2px 6px;
    color: var(--text);
    font-size: 12px;
}

.history {
    display: grid;
    gap: 10px;
}

.history-list {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.history-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
    background: var(--surface);
    display: grid;
    gap: 6px;
}

.history-item .stats {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
}

.history-item .stat-chip {
    min-width: 44px;
    padding: 8px 10px;
}

.app-footer {
    border-top: 1px solid var(--border);
    padding: 16px 0 22px;
    color: var(--muted-2);
}

.small {
    font-size: 13px;
    color: var(--muted);
}

.toast {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    z-index: 100;
    padding: 10px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    color: var(--text);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-6px);
}