:root {
    --pageBg: #0b2f24;
    --pageText: rgba(255, 255, 255, 0.92);
    --pageMuted: rgba(255, 255, 255, 0.72);
    --pageFaint: rgba(255, 255, 255, 0.58);

    --bg: #f6f1ea;
    --surface: #ffffff;
    --surface2: #fff7f2;
    --border: rgba(16, 18, 26, 0.14);
    --text: rgba(16, 18, 26, 0.94);
    --muted: rgba(16, 18, 26, 0.68);
    --faint: rgba(16, 18, 26, 0.52);
    --shadow: 0 18px 42px rgba(16, 18, 26, 0.14);

    --accent1: #ff5a3d;
    --accent2: #2dd4bf;
    --accent3: #6366f1;
    --success: #18a36a;
    --danger: #d64141;
    --warning: #b98500;

    --ring: 0 0 0 4px rgba(99, 102, 241, 0.16);
}

* {
    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", "Helvetica Neue", sans-serif;
    color: var(--pageText);
    background: var(--pageBg);
}

.page::before {
    content: none;
}

.page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 28px 16px 32px;
    gap: 18px;
}

.header {
    width: min(720px, 100%);
    text-align: left;
}

.title {
    margin: 0;
    font-size: clamp(1.6rem, 2.4vw, 2.2rem);
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

.title::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -8px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent2), var(--accent3), var(--accent1));
    opacity: 0.9;
}

.subtitle {
    margin: 8px 0 0;
    color: var(--pageMuted);
    line-height: 1.45;
}

.metaRow {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.65);
    color: rgba(16, 18, 26, 0.78);
    font-weight: 700;
    font-size: 0.85rem;
}

.tag--accent {
    border-color: rgba(99, 102, 241, 0.28);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.16), rgba(255, 90, 61, 0.10));
}

.header .tag {
    border-color: rgba(255, 255, 255, 0.30);
    background: rgba(255, 255, 255, 0.14);
    color: rgba(255, 255, 255, 0.92);
}

.header .tag--accent {
    border-color: rgba(255, 255, 255, 0.34);
    background: linear-gradient(90deg, rgba(45, 212, 191, 0.22), rgba(99, 102, 241, 0.22), rgba(255, 90, 61, 0.20));
}

.card {
    width: min(720px, 100%);
    background: linear-gradient(180deg, var(--surface), var(--surface2));
    border: 2px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 18px;
    position: relative;
    overflow: hidden;
    color: var(--text);
}

.card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    height: 7px;
    background: linear-gradient(90deg, var(--accent2), var(--accent3), var(--accent1));
}

.card::after {
    content: "";
    position: absolute;
    inset: 10px;
    border-radius: 14px;
    background:
        radial-gradient(10px 10px at 18px 18px, rgba(16, 18, 26, 0.05), transparent 55%),
        radial-gradient(12px 12px at 88% 22%, rgba(16, 18, 26, 0.04), transparent 55%),
        radial-gradient(12px 12px at 70% 88%, rgba(16, 18, 26, 0.04), transparent 55%);
    pointer-events: none;
    opacity: 0.9;
}

.field {
    display: grid;
    gap: 8px;
}

label {
    font-weight: 650;
    letter-spacing: 0.01em;
}

input[type="number"] {
    width: 100%;
    padding: 12px 12px;
    border-radius: 12px;
    border: 2px solid rgba(16, 18, 26, 0.16);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

input[type="number"]::placeholder {
    color: rgba(16, 18, 26, 0.38);
}

input[type="number"]:focus {
    border-color: rgba(99, 102, 241, 0.65);
    box-shadow: var(--ring);
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.hint {
    margin: 0;
    color: var(--faint);
    line-height: 1.45;
}

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

.btn {
    border: 2px solid rgba(16, 18, 26, 0.16);
    background: rgba(255, 255, 255, 0.7);
    color: var(--text);
    border-radius: 12px;
    padding: 10px 14px;
    font-weight: 650;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background 120ms ease;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--ring);
}

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

.btn-primary {
    border-color: rgba(11, 47, 36, 0.85);
    background: linear-gradient(180deg, #0f4735, #0b2f24);
    color: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 24px rgba(16, 18, 26, 0.22);
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
    border-color: rgba(11, 47, 36, 0.95);
    background: linear-gradient(180deg, #13523d, #0c372a);
    box-shadow: 0 16px 34px rgba(16, 18, 26, 0.26);
}

.btn-ghost:hover {
    border-color: rgba(16, 18, 26, 0.24);
    background: rgba(255, 255, 255, 0.92);
}

.message {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.72);
    color: var(--muted);
    min-height: 42px;
    display: grid;
    align-items: center;
}

.message--error {
    border-color: rgba(214, 65, 65, 0.35);
    background: rgba(214, 65, 65, 0.10);
    color: rgba(16, 18, 26, 0.92);
}

.message--success {
    border-color: rgba(24, 163, 106, 0.35);
    background: rgba(24, 163, 106, 0.10);
    color: rgba(16, 18, 26, 0.92);
}

.message--info {
    border-color: rgba(99, 102, 241, 0.30);
    background: rgba(99, 102, 241, 0.10);
    color: rgba(16, 18, 26, 0.92);
}

.output {
    margin-top: 14px;
    border-top: 1px solid rgba(16, 18, 26, 0.14);
    padding-top: 14px;
}

.output h2 {
    margin: 0 0 10px;
    font-size: 1rem;
    color: var(--muted);
    font-weight: 700;
    letter-spacing: 0.01em;
}

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

.lead {
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(16, 18, 26, 0.14);
    background: rgba(255, 255, 255, 0.82);
    color: var(--muted);
}

.logEntry {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
    padding: 12px 12px;
    border-radius: 14px;
    border: 1px solid rgba(16, 18, 26, 0.14);
    background: rgba(255, 255, 255, 0.82);
    border-left: 8px solid rgba(16, 18, 26, 0.18);
}

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

.logEntry__value {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(16, 18, 26, 0.14);
    background: rgba(255, 255, 255, 0.75);
    color: rgba(16, 18, 26, 0.86);
    font-weight: 700;
    font-size: 0.85rem;
}

.pill--muted {
    color: rgba(16, 18, 26, 0.66);
}

.logEntry--low {
    border-left-color: rgba(185, 133, 0, 0.55);
}

.logEntry--high {
    border-left-color: rgba(99, 102, 241, 0.55);
}

.logEntry--equal {
    border-left-color: rgba(24, 163, 106, 0.60);
}

.result {
    padding: 12px 12px;
    border-radius: 14px;
    border: 1px solid rgba(16, 18, 26, 0.14);
    background: rgba(255, 255, 255, 0.82);
    font-weight: 800;
}

.result--win {
    border-color: rgba(24, 163, 106, 0.35);
    background: rgba(24, 163, 106, 0.10);
}

.result--lose {
    border-color: rgba(214, 65, 65, 0.35);
    background: rgba(214, 65, 65, 0.10);
}

.footer {
    width: min(720px, 100%);
    text-align: left;
    color: var(--pageFaint);
    font-size: 0.95rem;
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        scroll-behavior: auto !important;
    }
}