:root {
    --game-primary: #c90c0f;
    --game-secondary: #e8c36a;
}

body.fen-page {
    margin: 0;
    min-height: 100vh;
    font-family: "Rockwell", "Rockwell Nova", "Roboto Slab", serif;
    color: #f4ead5;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 12% 8%, rgba(232, 195, 106, 0.16), transparent 42%),
        radial-gradient(circle at 88% 10%, rgba(201, 12, 15, 0.18), transparent 46%),
        linear-gradient(180deg, #161d28 0%, #243044 48%, #10151d 100%);
}

body.fen-page.game-menu-active {
    overflow-y: auto;
    overflow-x: hidden;
}

body.fen-page.game-menu-active #game-header {
    display: none !important;
}

.fen-page .game-screen {
    display: none;
    min-height: 100vh;
}

.fen-page .game-screen.active {
    display: block;
}

body.fen-page.with-game-header .fen-shell {
    padding-top: 5.5rem;
}

.fen-shell {
    max-width: min(780px, 96vw);
    margin: 0 auto;
    padding: 1.1rem 0.75rem 2.5rem;
}

.fen-hud {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    max-width: 640px;
    margin: 0 auto 0.85rem;
    padding: 0.55rem 0.7rem;
    background: linear-gradient(180deg, #2c3a4f, #161d28);
    border: 3px solid #0e131a;
    border-radius: 12px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 10px 24px rgba(0, 0, 0, 0.35);
}

.fen-lcd {
    min-width: 4.6rem;
    padding: 0.2rem 0.45rem;
    background: #0a0e14;
    color: #e8c36a;
    font-family: "Courier New", ui-monospace, monospace;
    font-size: 1.05rem;
    font-weight: 700;
    text-align: center;
    border-radius: 6px;
    box-shadow: inset 0 0 0 2px #7f1d1d, inset 0 8px 16px rgba(0, 0, 0, 0.45);
}

.fen-lcd span {
    display: block;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #e8c36a;
}

.fen-chip {
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: #c90c0f;
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
}

.fen-paper {
    background: #f6ecd8;
    color: #1b140c;
    border-radius: 14px;
    padding: 1.15rem 1.15rem 1.3rem;
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.35), inset 0 0 0 2px rgba(201, 12, 15, 0.12);
}

.fen-prompt {
    margin: 0 0 0.65rem;
    font-size: 1.22rem;
    line-height: 1.45;
    color: #1b140c;
}

.fen-kind {
    display: inline-block;
    margin-bottom: 0.55rem;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    background: #fff;
    color: #c90c0f;
    border: 2px solid #c90c0f;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.fen-hint {
    margin: 0 0 1rem;
    color: #5c4a32;
    font-size: 0.95rem;
}

.fen-entry {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 0.45rem 0.6rem;
}

.fen-entry label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    color: #7f1d1d;
    margin-bottom: 0.2rem;
}

.fen-entry input {
    min-height: 48px;
    width: 8.5rem;
    padding: 0.4rem 0.6rem;
    border: 2px solid #c90c0f;
    border-radius: 10px;
    background: #fff;
    color: #1a1a1a;
    font-size: 1.15rem;
    font-weight: 700;
}

.fen-times {
    font-weight: 800;
    color: #c90c0f;
    padding-bottom: 0.7rem;
}

.fen-submit {
    min-height: 48px;
    padding: 0.55rem 1.1rem;
    border: none;
    border-radius: 10px;
    background: #c90c0f;
    color: #fff;
    font-weight: 800;
    cursor: pointer;
}

.fen-submit:hover,
.fen-submit:focus {
    background: #a10a0c;
    color: #fff;
}

.fen-submit:disabled {
    background: #8a8a8a;
    color: #fff;
    cursor: not-allowed;
}

.fen-sci {
    margin-top: 0.55rem;
    font-size: 0.88rem;
    color: #5c4a32;
}

.fen-result {
    display: none;
    margin-top: 1rem;
    padding-top: 0.85rem;
    border-top: 2px dashed rgba(201, 12, 15, 0.25);
}

.fen-result.is-open {
    display: block;
}

.fen-scoreline {
    font-weight: 800;
    font-size: 1.05rem;
    color: #7f1d1d;
    margin: 0 0 0.45rem;
}

.fen-working {
    margin: 0;
    padding-left: 1.15rem;
    color: #2a2116;
}

.fen-working li {
    margin: 0.2rem 0;
}

.fen-next {
    margin-top: 0.85rem;
    min-height: 44px;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    border: 2px solid #c90c0f;
    background: #fff;
    color: #c90c0f;
    font-weight: 800;
    cursor: pointer;
}

.fen-next:hover,
.fen-next:focus {
    background: #c90c0f;
    color: #fff;
}

.fen-status {
    text-align: center;
    color: #e7d3b0;
    margin: 0.85rem auto 0;
    max-width: 36rem;
}

.difficulty-pill {
    padding: 0.45rem 0.75rem;
    min-height: 44px;
    border-radius: 999px;
    border: 2px solid #c90c0f;
    background: #fff !important;
    color: #c90c0f !important;
    font-weight: 700;
    cursor: pointer;
}

.difficulty-pill.is-selected,
.difficulty-pill:hover {
    background: #c90c0f !important;
    color: #fff !important;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    z-index: 12000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: #fff;
    color: #1a1a1a;
    border-radius: 1rem;
    max-width: 640px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 760px;
}

.modal-header,
.modal-footer {
    padding: 1.1rem 1.4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.modal-header {
    border-bottom: 2px solid #eee;
}

.modal-header h2 {
    margin: 0;
    color: #c90c0f;
    font-size: 1.35rem;
}

.modal-close {
    background: #fff !important;
    border: 2px solid #c90c0f;
    color: #c90c0f !important;
    min-width: 44px;
    min-height: 44px;
    border-radius: 8px;
    cursor: pointer;
}

.modal-body {
    padding: 1.1rem 1.4rem;
}

.modal-footer {
    border-top: 2px solid #eee;
}

.fen-page .btn {
    min-height: 44px;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    font-weight: 800;
    cursor: pointer;
}

.fen-page .btn-primary {
    background: #c90c0f;
    color: #fff;
    border: none;
}

.fen-page .btn-primary:hover,
.fen-page .btn-primary:focus {
    background: #a10a0c;
    color: #fff;
}

.fen-page .btn-secondary {
    background: #fff;
    color: #c90c0f;
    border: 2px solid #c90c0f;
}

.fen-page .btn-secondary:hover,
.fen-page .btn-secondary:focus {
    background: #c90c0f;
    color: #fff;
}

.help-section h3 {
    margin: 0.2rem 0 0.4rem;
    color: #c90c0f;
}

.help-section ul {
    margin: 0 0 1rem;
    padding-left: 1.2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
}

.stat-card {
    background: #f6ecd8;
    border-radius: 10px;
    padding: 0.8rem;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: #c90c0f;
}

.stat-label {
    color: #5c4a32;
    font-size: 0.85rem;
}

.win-stats {
    display: flex;
    gap: 0.8rem;
    justify-content: space-around;
    margin: 0.8rem 0 1rem;
}

.win-stat {
    text-align: center;
}

.win-stat strong {
    display: block;
    font-size: 1.4rem;
    color: #c90c0f;
}

.result-message {
    margin: 0;
}

#settingsModal .fen-settings-note {
    margin: 0.75rem 0 0;
    color: #7f1d1d;
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .fen-prompt {
        font-size: 1.08rem;
    }

    .fen-entry input {
        width: 6.5rem;
    }
}