:root {
    --bg: #f4f1ea;
    --panel: rgba(255, 252, 245, 0.88);
    --panel-strong: #fffdfa;
    --line: #d7cdbd;
    --line-strong: #bba98f;
    --text: #2e2a24;
    --muted: #6d6457;
    --brand: #1d5c4d;
    --brand-strong: #134135;
    --warm: #b46f2d;
    --danger: #b54d3d;
    --shadow: 0 18px 40px rgba(77, 59, 31, 0.10);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --cell-size: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(180, 111, 45, 0.10), transparent 30%),
        linear-gradient(180deg, #fbf8f1 0%, var(--bg) 100%);
    font-family: "Inter", sans-serif;
}
body.modal-open { overflow: hidden; }
a { color: inherit; }
button, input { font: inherit; }

.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(72, 59, 43, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(72, 59, 43, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 80%);
    pointer-events: none;
    z-index: -1;
}

.container {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(12px);
    background: rgba(251, 248, 241, 0.78);
    border-bottom: 1px solid rgba(187, 169, 143, 0.35);
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 16px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-strong) 100%);
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700;
}

.brand-copy {
    display: flex;
    flex-direction: column;
}

.brand-copy strong {
    font-family: "Space Grotesk", sans-serif;
    font-size: 1.15rem;
}

.brand-copy small {
    color: var(--muted);
    font-size: 0.82rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--muted);
    padding: 10px 14px;
    border-radius: 999px;
    font-weight: 600;
}

.nav-link:hover,
.nav-link.active {
    color: var(--brand-strong);
    background: rgba(29, 92, 77, 0.10);
}

.hero,
.content-section {
    padding: 32px 0 0;
}

.game-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.8fr) minmax(300px, 0.9fr);
    gap: 24px;
    align-items: stretch;
}

.solver-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.8fr);
    gap: 24px;
    align-items: start;
}

.panel,
.content-card,
.promo-card,
.modal-card,
.page-card {
    background: var(--panel);
    border: 1px solid rgba(187, 169, 143, 0.45);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.game-panel,
.sidebar-panel,
.content-card,
.promo-card,
.modal-card,
.page-card {
    padding: 28px;
}

.panel-topline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 18px;
}

.panel-topline h1,
.content-card h2,
.promo-card h2,
.modal-card h2,
.page-card h1,
.sidebar-header h2,
.footer-grid h3 {
    margin: 0;
    font-family: "Space Grotesk", sans-serif;
    letter-spacing: -0.02em;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--warm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
}

.mode-pill-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.size-switcher {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.size-chip {
    min-height: 36px;
    padding: 0 12px;
    border: 1px solid rgba(187, 169, 143, 0.75);
    border-radius: 999px;
    background: rgba(255, 253, 250, 0.84);
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 120ms ease, color 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.size-chip:hover {
    color: var(--brand-strong);
    border-color: rgba(29, 92, 77, 0.35);
    transform: translateY(-1px);
}

.size-chip.active {
    background: rgba(29, 92, 77, 0.10);
    color: var(--brand-strong);
    border-color: rgba(29, 92, 77, 0.28);
}

.mode-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 36px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(29, 92, 77, 0.10);
    color: var(--brand-strong);
    font-size: 0.92rem;
    font-weight: 700;
}

.mode-pill.muted { background: rgba(109, 100, 87, 0.10); color: var(--muted); }
.mode-pill.accent,
.mode-pill.warm { background: rgba(180, 111, 45, 0.12); color: #8a5218; }

.status-strip {
    display: grid;
    grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.2fr);
    gap: 14px;
    margin-bottom: 18px;
}

.timer-wrap,
.meta-chip,
.board-legend,
.step-card,
.example-copy,
.field-input {
    background: var(--panel-strong);
    border: 1px solid rgba(187, 169, 143, 0.45);
}

.timer-wrap {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 18px 20px;
    border-radius: var(--radius-lg);
}

.timer-label {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.timer-wrap strong {
    margin-top: 8px;
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
}

.meta-wrap {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.meta-chip {
    padding: 16px 18px;
    border-radius: var(--radius-lg);
}

.meta-chip span {
    display: block;
    color: var(--muted);
    font-size: 0.84rem;
    margin-bottom: 8px;
}

.meta-chip strong { font-size: 1rem; }

.daily-startbar,
.controls,
.modal-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.daily-startbar { margin-bottom: 18px; }
.controls { margin-top: 18px; }

.board-legend {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 14px;
}

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

.board-legend p.success { color: var(--brand-strong); }
.board-legend p.error { color: var(--danger); }

.solver-toolbar,
.solver-side-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.solver-toolbar {
    margin-bottom: 18px;
    align-items: end;
}

.solver-select {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 100px;
}

.solver-select span {
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 700;
}

.solver-select select {
    min-height: 46px;
    padding: 0 14px;
    border-radius: 14px;
    border: 1px solid rgba(187, 169, 143, 0.75);
    background: #fffdfa;
    color: var(--text);
}

.solver-shell {
    display: block;
}

.solver-board-wrap {
    min-width: 0;
}

.solver-sidecard {
    padding: 20px;
    border-radius: var(--radius-lg);
    background: var(--panel-strong);
    border: 1px solid rgba(187, 169, 143, 0.45);
}

.solver-sidecard h2 {
    margin: 0 0 10px;
    font-family: "Space Grotesk", sans-serif;
}

.solver-sidecard p {
    margin: 0 0 12px;
    color: var(--muted);
    line-height: 1.6;
}

.solver-side-actions + .solver-side-actions {
    margin-top: 12px;
}

.solver-keypad {
    display: none;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 12px;
}

.solver-key {
    min-height: 44px;
    padding: 0;
}

.solver-key-wide {
    grid-column: span 1;
}

.solver-input-help {
    min-height: 0;
    margin-top: 8px;
    color: var(--muted);
}

.shikaku-board {
    display: grid;
    justify-content: start;
    gap: 0;
    padding: 18px;
    border-radius: 24px;
    background: linear-gradient(180deg, #fbf8f1 0%, #f1ebde 100%);
    border: 1px solid rgba(187, 169, 143, 0.5);
    overflow: auto;
    touch-action: none;
    user-select: none;
}

.shikaku-board.locked { opacity: 0.56; }
.solver-board {
    min-height: 320px;
    justify-content: center;
    --cell-size: 58px;
}

.board-cell {
    position: relative;
    width: var(--cell-size);
    height: var(--cell-size);
    border: 1px solid var(--line);
    background: rgba(255, 252, 245, 0.78);
    display: grid;
    place-items: center;
    cursor: crosshair;
    transition: background 120ms ease;
}

.board-cell.clue-cell {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700;
    font-size: 1.35rem;
}

.board-cell.solver-selected {
    outline: 3px solid rgba(29, 92, 77, 0.65);
    outline-offset: -3px;
}

.board-cell.preview { background: rgba(29, 92, 77, 0.14); }
.board-cell.preview.invalid { background: rgba(181, 77, 61, 0.16); }

.cell-fill {
    position: absolute;
    inset: 5px;
    border-radius: 12px;
    z-index: 1;
}

.clue-badge {
    position: absolute;
    inset: 7px auto auto 7px;
    min-width: 28px;
    padding: 4px 7px;
    border-radius: 999px;
    background: rgba(255, 253, 250, 0.88);
    border: 1px solid rgba(187, 169, 143, 0.75);
    font-size: 0.95rem;
    line-height: 1;
    z-index: 2;
}

.btn {
    border: 0;
    border-radius: 999px;
    min-height: 46px;
    padding: 0 18px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 120ms ease, background 120ms ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-strong); }
.btn-secondary { background: #fff; color: var(--text); border: 1px solid rgba(187, 169, 143, 0.75); }

.mode-note,
.content-card p,
.page-card p,
.history-main span,
.history-meta,
.empty-state,
.field-help,
.footer-grid p,
.footer-grid li,
.footer-grid a {
    color: var(--muted);
}

.mode-note,
.content-card p,
.page-card p {
    line-height: 1.7;
}

.sidebar-panel {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.sidebar-block + .sidebar-block {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px dashed rgba(187, 169, 143, 0.8);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    color: var(--muted);
    border-bottom: 1px dashed rgba(187, 169, 143, 0.55);
}

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

.history-list,
.past-days-list,
.faq-list,
.prose-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item,
.past-day-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 16px;
    background: rgba(255, 253, 250, 0.75);
    border: 1px solid rgba(187, 169, 143, 0.42);
}

.history-main,
.past-day-main {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.history-main strong,
.past-day-main strong { font-size: 0.95rem; }
.history-item.highlight { background: rgba(29, 92, 77, 0.12); border-color: rgba(29, 92, 77, 0.3); }

.step-list { display: grid; gap: 14px; }
.step-card {
    display: grid;
    grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.2fr);
    align-items: center;
    gap: 18px;
    padding: 16px;
    border-radius: var(--radius-lg);
}

.step-media {
    min-height: 120px;
    border-radius: 18px;
    border: 1px dashed rgba(187, 169, 143, 0.95);
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.84), rgba(245, 238, 224, 0.92)),
        repeating-linear-gradient(45deg, rgba(187, 169, 143, 0.08) 0, rgba(187, 169, 143, 0.08) 12px, transparent 12px, transparent 24px);
    color: var(--muted);
    display: grid;
    place-items: center;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
}

.step-copy {
    display: grid;
    gap: 8px;
}

.step-index {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    border-radius: 50%;
    background: var(--brand);
    color: #fff;
    font-weight: 700;
}

.step-card h3 { margin: 0 0 6px; font-size: 1rem; }
.step-card p { margin: 0; }

.example-grid {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 18px;
    align-items: center;
}

.example-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border: 2px solid var(--line-strong);
}

.example-board div {
    min-height: 48px;
    display: grid;
    place-items: center;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700;
}

.example-board div:nth-child(4n) { border-right: 0; }
.example-board div:nth-last-child(-n + 4) { border-bottom: 0; }

.example-copy {
    padding: 18px;
    border-radius: var(--radius-lg);
}

.faq-list details {
    padding: 14px 16px;
    border-radius: 16px;
    background: var(--panel-strong);
    border: 1px solid rgba(187, 169, 143, 0.42);
}

.faq-list summary { cursor: pointer; font-weight: 700; }
.faq-list details p { margin-top: 12px; }

.promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    padding-bottom: 32px;
}

.promo-card a {
    color: var(--brand-strong);
    font-weight: 700;
    text-decoration: none;
}

.site-footer { padding: 24px 0 40px; }

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 24px;
    padding: 24px 28px;
    background: rgba(255, 252, 245, 0.78);
    border: 1px solid rgba(187, 169, 143, 0.4);
    border-radius: var(--radius-xl);
}

.footer-grid ul { margin: 0; padding-left: 18px; }
.footer-grid li + li { margin-top: 8px; }

.modal-shell {
    position: fixed;
    inset: 0;
    background: rgba(32, 25, 19, 0.52);
    display: grid;
    place-items: center;
    padding: 16px;
    z-index: 40;
}

.modal-shell[hidden] {
    display: none;
}

.modal-card { width: min(420px, 100%); }
.modal-time {
    margin: 10px 0;
    font-family: "Space Grotesk", sans-serif;
    font-size: 2rem;
}

.field-label { display: block; margin-top: 14px; font-weight: 700; }
.field-input {
    width: 100%;
    margin-top: 8px;
    padding: 12px 14px;
    border-radius: 12px;
}
.field-help { min-height: 20px; margin: 8px 0 0; color: var(--danger); font-size: 0.88rem; }

@media (max-width: 1024px) {
    .game-layout,
    .solver-hero-grid,
    .promo-grid,
    .footer-grid,
    .example-grid,
    .status-strip {
        grid-template-columns: 1fr;
    }

    .panel-topline,
    .header-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .step-card {
        grid-template-columns: 1fr;
    }

    .site-nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
        flex-wrap: nowrap;
    }
}

@media (max-width: 1320px) {
    .solver-hero-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    :root { --cell-size: 46px; }
    .container { width: min(100% - 20px, 1160px); }
    .game-panel,
    .sidebar-panel,
    .content-card,
    .promo-card,
    .modal-card,
    .page-card,
    .footer-grid { padding: 20px; }
    .controls .btn,
    .daily-startbar .btn,
    .modal-actions .btn,
    .size-chip { flex: 1 1 calc(50% - 8px); }
    .solver-toolbar .btn,
    .solver-side-actions .btn { flex: 1 1 100%; }
    .solver-keypad {
        display: grid;
    }
    .solver-key {
        flex: none;
    }
    .board-cell {
        width: var(--cell-size);
        height: var(--cell-size);
    }
    .solver-board {
        --cell-size: 46px;
    }
}

@media (min-width: 1025px) {
    .history-block {
        flex: 1 1 auto;
        min-height: 0;
        display: flex;
        flex-direction: column;
    }

    .history-list {
        flex: 1 1 auto;
        min-height: 0;
        max-height: 430px;
        overflow-y: auto;
        padding-right: 6px;
    }
}