:root {
    --bg: #ffffff;
    --panel: #f6f8fb;
    --ink: #0f172a;
    --muted: #5b6577;
    --accent: #4f46e5;
    --accent-dark: #4338ca;
    --accent-soft: #eef2ff;
    --line: #e2e8f0;
    --danger: #dc2626;
    --danger-soft: #fee2e2;
    --ok: #15803d;
    --radius: 16px;
    --shadow-soft: 0 1px 2px rgba(15, 23, 42, 0.05), 0 4px 14px rgba(15, 23, 42, 0.05);
    --shadow-lift: 0 2px 6px rgba(15, 23, 42, 0.06), 0 18px 36px -18px rgba(15, 23, 42, 0.22);
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-stack);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
}

[id] {
    scroll-margin-top: 88px;
}

/* ---------- top navigation ---------- */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px 20px;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}

.brand {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.brand a {
    color: inherit;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 999px;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--accent);
    background: var(--accent-soft);
}

/* ---------- hero ---------- */

.hero {
    max-width: 720px;
    margin: 0 auto;
    padding: 72px 24px 40px;
    text-align: center;
}

.hero-tagline {
    margin: 0 0 28px;
    font-size: clamp(1.35rem, 3.4vw, 1.9rem);
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.02em;
}

.hero-cta {
    display: inline-block;
    padding: 13px 32px;
    border-radius: 999px;
    background: var(--accent);
    color: #ffffff;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: 0 10px 24px -10px rgba(79, 70, 229, 0.55);
    transition: background-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.hero-cta:hover,
.hero-cta:focus-visible {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 14px 30px -10px rgba(79, 70, 229, 0.6);
}

/* ---------- layout ---------- */

.page-main {
    padding: 24px 24px 40px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
}

/* ---------- game card ---------- */

.game-zone {
    display: flex;
    justify-content: center;
    padding: 8px 0 24px;
}

.game-panel {
    width: 100%;
    max-width: 560px;
    padding: 24px;
}

.game-panel.jolt {
    animation: jolt 0.45s ease;
}

.game-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin-bottom: 18px;
}

.game-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.wallet-line {
    display: flex;
    align-items: center;
    gap: 8px;
}

.wallet-label {
    font-size: 0.82rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.wallet-value {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    font-size: 1.05rem;
}

.wallet-reset {
    border: 1px solid var(--line);
    background: #ffffff;
    color: var(--muted);
    font-size: 0.75rem;
    font-family: inherit;
    padding: 3px 10px;
    border-radius: 999px;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.wallet-reset:hover:enabled {
    color: var(--accent);
    border-color: var(--accent);
}

.wallet-reset:disabled {
    opacity: 0.45;
    cursor: default;
}

.controls {
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
}

.control-field {
    flex: 1 1 0;
    min-width: 0;
}

.control-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 6px;
}

.bet-box {
    display: flex;
    align-items: stretch;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}

.bet-step {
    width: 40px;
    border: 0;
    background: transparent;
    color: var(--accent);
    font-size: 1.15rem;
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.bet-step:hover:enabled {
    background: var(--accent-soft);
}

.bet-step:disabled {
    color: var(--muted);
    opacity: 0.4;
    cursor: default;
}

.bet-input {
    flex: 1;
    width: 100%;
    min-width: 0;
    border: 0;
    text-align: center;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    padding: 10px 4px;
    background: transparent;
    -moz-appearance: textfield;
    appearance: textfield;
}

.bet-input::-webkit-outer-spin-button,
.bet-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bet-input:focus {
    outline: none;
}

.bet-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.mines-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #ffffff;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ink);
    cursor: pointer;
}

.mines-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.mines-select:disabled,
.bet-input:disabled {
    color: var(--muted);
    cursor: default;
}

.round-stats {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.stat-cell {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 10px 14px;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* ---------- mines board ---------- */

.mines-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-bottom: 14px;
}

.tile {
    position: relative;
    aspect-ratio: 1 / 1;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    perspective: 420px;
    -webkit-tap-highlight-color: transparent;
}

.tile:disabled {
    cursor: default;
}

.tile-inner {
    position: absolute;
    inset: 0;
    display: block;
    transform-style: preserve-3d;
    transition: transform 0.45s cubic-bezier(0.3, 0.9, 0.4, 1.05);
}

.tile.revealed .tile-inner {
    transform: rotateY(180deg);
}

.tile-face {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.tile-front {
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.tile:hover:enabled .tile-front {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.tile-back {
    transform: rotateY(180deg);
    background: var(--accent-soft);
    border: 1px solid #c7d2fe;
}

.tile.boom .tile-back {
    background: var(--danger-soft);
    border-color: #fca5a5;
}

.tile.dimmed .tile-back {
    opacity: 0.45;
}

.tile-back svg {
    width: 58%;
    height: 58%;
}

.game-status {
    min-height: 1.5em;
    margin: 0 0 14px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--muted);
    text-align: center;
}

.game-status.win {
    color: var(--ok);
    animation: pop 0.35s ease;
}

.game-status.lose {
    color: var(--danger);
    animation: pop 0.35s ease;
}

.action-row {
    display: flex;
    gap: 12px;
}

.btn-start,
.btn-cash {
    flex: 1;
    padding: 13px 16px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn-start {
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.btn-start:hover:enabled {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    transform: translateY(-1px);
}

.btn-cash {
    border: 1px solid var(--accent);
    background: #ffffff;
    color: var(--accent);
}

.btn-cash:hover:enabled {
    background: var(--accent-soft);
    transform: translateY(-1px);
}

.btn-start:disabled,
.btn-cash:disabled {
    border-color: var(--line);
    background: var(--panel);
    color: var(--muted);
    cursor: default;
    transform: none;
}

.no-js-note {
    margin: 14px 0 0;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--danger-soft);
    color: var(--danger);
    font-size: 0.9rem;
}

/* ---------- article column ---------- */

.article-wrap {
    padding: 32px 0 8px;
}

.content-col {
    max-width: 720px;
    margin: 0 auto;
}

.content-col h1 {
    font-size: clamp(1.7rem, 4vw, 2.3rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 18px;
}

.content-col h2 {
    font-size: 1.4rem;
    letter-spacing: -0.01em;
    margin: 44px 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
}

.content-col p {
    margin: 0 0 16px;
    color: #26324b;
}

.content-col a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.content-col a:hover {
    color: var(--accent-dark);
}

.content-col ul,
.content-col ol {
    margin: 0 0 16px;
    padding-left: 24px;
    color: #26324b;
}

.content-col li {
    margin-bottom: 8px;
}

.content-col li strong {
    color: var(--ink);
}

.facts-list {
    display: grid;
    grid-template-columns: minmax(120px, auto) 1fr;
    gap: 0;
    margin: 0 0 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.facts-list dt {
    padding: 11px 16px;
    font-weight: 600;
    font-size: 0.92rem;
    border-top: 1px solid var(--line);
}

.facts-list dd {
    margin: 0;
    padding: 11px 16px;
    font-size: 0.92rem;
    color: #26324b;
    border-top: 1px solid var(--line);
}

.facts-list dt:first-of-type,
.facts-list dd:first-of-type {
    border-top: 0;
}

.steps-list li {
    margin-bottom: 12px;
}

.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
}

.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.42em;
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: var(--accent);
    opacity: 0.85;
}

.mode-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 16px;
    font-size: 0.93rem;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.mode-table th {
    background: var(--panel);
    text-align: left;
    padding: 11px 16px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    border-bottom: 1px solid var(--line);
}

.mode-table td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--line);
    color: #26324b;
    vertical-align: top;
}

.mode-table tbody tr:last-child td {
    border-bottom: 0;
}

.faq-block {
    margin-bottom: 16px;
}

.faq-item {
    margin: 22px 0 8px;
    padding: 14px 16px 0;
    font-size: 1.02rem;
    font-weight: 600;
    border-top: 1px solid var(--line);
}

.faq-block .faq-item:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.faq-block p {
    padding: 0 16px;
    color: #26324b;
}

/* ---------- partner offers ---------- */

.partners-zone {
    padding: 24px 0 16px;
}

.offers {
    max-width: 720px;
    margin: 0 auto;
}

.offers:has(.offers-list:empty) {
    display: none;
}

.offers-title {
    font-size: 1.4rem;
    letter-spacing: -0.01em;
    margin: 0 0 18px;
}

.offers-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.offer-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.offer-row:hover {
    transform: translateY(-3px);
    border-color: #c7d2fe;
    box-shadow: var(--shadow-lift);
}

.offer-logo {
    width: 48px;
    height: 48px;
    flex: 0 0 48px;
    object-fit: contain;
    border-radius: 10px;
    background: var(--panel);
}

.offer-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.offer-name {
    font-weight: 700;
    font-size: 1.02rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.offer-stars {
    display: inline-flex;
    gap: 3px;
}

.offer-stars i {
    display: inline-block;
    width: 13px;
    height: 13px;
    background: var(--accent);
    clip-path: polygon(50% 0%, 63% 34%, 98% 36%, 70% 58%, 79% 92%, 50% 72%, 21% 92%, 30% 58%, 2% 36%, 37% 34%);
}

.offer-cta {
    flex: 0 0 auto;
    padding: 10px 22px;
    border-radius: 999px;
    background: var(--accent);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.92rem;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease;
}

.offer-cta:hover {
    background: var(--accent-dark);
}

/* ---------- footer ---------- */

.site-footer {
    margin-top: 40px;
    padding: 28px 24px 36px;
    border-top: 1px solid var(--line);
    background: var(--panel);
    text-align: center;
}

.footer-note {
    max-width: 720px;
    margin: 0 auto 10px;
    font-size: 0.9rem;
    color: var(--ink);
}

.footer-fine {
    max-width: 720px;
    margin: 0 auto;
    font-size: 0.8rem;
    color: var(--muted);
}

.age-badge {
    display: inline-block;
    padding: 2px 9px;
    margin-right: 6px;
    border-radius: 999px;
    background: var(--ink);
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 700;
    vertical-align: 1px;
}

/* ---------- animations ---------- */

@keyframes pop {
    0% {
        transform: scale(0.92);
    }

    60% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes jolt {
    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-6px);
    }

    40% {
        transform: translateX(5px);
    }

    60% {
        transform: translateX(-4px);
    }

    80% {
        transform: translateX(3px);
    }
}

/* ---------- small screens ---------- */

@media (max-width: 640px) {
    .site-nav {
        padding: 12px 16px;
    }

    .nav-links a {
        padding: 5px 8px;
        font-size: 0.85rem;
    }

    .hero {
        padding: 48px 16px 28px;
    }

    .page-main {
        padding: 16px 16px 32px;
    }

    .game-panel {
        padding: 18px 14px;
    }

    .controls {
        flex-direction: column;
    }

    .mines-grid {
        gap: 6px;
    }

    .facts-list {
        grid-template-columns: 1fr;
    }

    .facts-list dt {
        padding-bottom: 2px;
    }

    .facts-list dd {
        border-top: 0;
        padding-top: 0;
    }

    .offer-row {
        flex-wrap: wrap;
        gap: 12px;
    }

    .offer-cta {
        flex: 1 1 100%;
        text-align: center;
    }
}