:root {
    --bg: #0a0a0a;
    --fg: #e0e0e0;
    --muted: #555;
    --border: #2a2a2a;
    --border-light: #1a1a1a;
    --accent: #3a3a5a;
    --error: #e44;
    --link: #58a6ff;
    --indent: 24px;
    
    --correct: #2e7d32;
    --present: #b8860b;
    --absent: #2a2a2a;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: "Fira Code", "Cascadia Code", "Consolas", monospace;
    background: var(--bg);
    color: var(--fg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
    overscroll-behavior: none;
    touch-action: manipulation;
}


.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
    padding: 0 var(--indent);
    border-bottom: 1px solid var(--border);
    background: #060606;
}

.header h1 {
    font-size: 14px;
    font-weight: 700;
    color: var(--fg);
    letter-spacing: 0.5px;
    margin: 0;
    text-shadow: none;
}


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


.ctrl-btn,
.sp-btn,
.key-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 5px 14px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--muted);
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.12s;
    border-radius: 2px;
    white-space: nowrap;
}

.ctrl-btn:hover,
.sp-btn:hover {
    border-color: var(--fg);
    color: var(--fg);
}

.ctrl-btn:active,
.sp-btn:active {
    transform: scale(0.97);
}


main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 80px 20px 40px;
    min-height: 100vh;
}


.board {
    display: grid;
    grid-template-rows: repeat(6, 1fr);
    gap: 8px;
    margin-bottom: 30px;
    width: 100%;
    max-width: 300px;
}

.row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 8px;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.cell {
    flex: 1 1 0;
    min-width: 0;
    aspect-ratio: 1;
    background-color: #0a0a0a;
    border: 1px solid var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.5rem, 8vw, 2.2rem);
    font-weight: bold;
    color: var(--fg);
    transition: background-color 0.1s, border-color 0.1s, transform 0.1s;
}

.cell.correct {
    background-color: var(--correct);
    border-color: var(--correct);
    color: #fff;
}

.cell.present {
    background-color: var(--present);
    border-color: var(--present);
    color: #fff;
}

.cell.absent {
    background-color: var(--absent);
    border-color: var(--border);
    color: var(--muted);
}


.cell.pop {
    animation: pop 0.2s ease;
}

@keyframes pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}


.keyboard {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 500px;
    margin-top: auto;
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: 6px;
}

.key-btn {
    flex: 1;
    min-width: 30px;
    height: 48px;
    font-size: 1.3rem;
    font-weight: bold;
    border-radius: 4px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--fg);
    transition: all 0.12s;
}

.key-btn:active {
    transform: scale(0.95);
    background: var(--accent);
    color: #fff;
}

.key-btn.wide {
    flex: 1.5;
}


.key-btn.correct-bg {
    background-color: var(--correct);
    border-color: var(--correct);
    color: #fff;
}

.key-btn.present-bg {
    background-color: var(--present);
    border-color: var(--present);
    color: #fff;
}

.key-btn.absent-bg {
    background-color: var(--absent);
    border-color: var(--border);
    color: var(--muted);
}


.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 28px 24px;
    min-width: 280px;
    max-width: 90vw;
    border-radius: 4px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.3s ease both;
}

.modal-content h2 {
    margin: 0 0 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--fg);
}

.modal-content p {
    font-size: 13px;
    color: var(--muted);
    margin: 0 0 16px;
}


.sp-btn {
    margin-top: 12px;
    padding: 8px 24px;
    font-size: 13px;
    border-color: var(--accent);
    color: var(--accent);
    background: var(--bg);
}

.sp-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--fg);
}


footer {
    border-top: 1px solid var(--border);
    padding: 16px var(--indent);
    font-size: 11px;
    color: var(--muted);
    text-align: center;
    background: #060606;
    margin-top: auto;
    position: sticky;
    top: 100vh;
}

footer a {
    color: var(--link);
    text-decoration: none;
}


@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}


::-webkit-scrollbar {
    width: 4px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}


::selection {
    background: var(--accent);
    color: #fff;
}




.home-btn,
.add-btn,
.clear-btn {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 8px 16px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.1s;
    font-family: inherit;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.home-btn:hover {
    border-color: var(--fg);
    color: var(--fg);
}

.add-btn {
    color: var(--link);
    border-color: #2a2a5a;
    background: #12152a;
}

.add-btn:hover {
    border-color: var(--link);
    color: #aaf;
    background: #1a1f3a;
}

.clear-btn {
    color: var(--error);
    border-color: #5a2a2a;
    background: #2a1215;
}

.clear-btn:hover {
    border-color: #f88;
    color: #faa;
    background: #3a1a1f;
}


@media (max-width: 560px) {
    :root { --indent: 16px; }
    
    .header {
        padding: 0 12px;
    }
    
    .key-btn {
        height: 44px;
        font-size: 1.1rem;
    }
    
    .cell {
        border-radius: 2px;
    }
}