:root {
    --bg: #0b0d11;
    --bg-accent: #0f1117;
    --panel: #151824;
    --text: #f2f4f8;
    --muted: #8b93a7;
    --tile-bg: #11131a;
    --tile-border: #2b2f3a;
    --tile-filled: #1a1e29;
    --key-bg: #b6bdc9;
    --key-text: #141923;
    --color-correct: #4caf50;
    --color-present: #caa434;
    --color-absent: #3c414d;
    --shadow: rgba(0, 0, 0, 0.35);
}

body.theme-light {
    --bg: #f7f6f2;
    --bg-accent: #fefbf4;
    --panel: #ffffff;
    --text: #1b1c1f;
    --muted: #6b7280;
    --tile-bg: #ffffff;
    --tile-border: #d1d5db;
    --tile-filled: #f3f4f6;
    --key-bg: #e5e7eb;
    --key-text: #1b1c1f;
    --color-absent: #9aa1ad;
    --shadow: rgba(0, 0, 0, 0.08);
}

body.theme-contrast {
    --color-correct: #f5793a;
    --color-present: #85c0f9;
}

body.theme-colorblind {
    --color-correct: #f5793a;
    --color-present: #85c0f9;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, var(--bg-accent), var(--bg));
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.app {
    width: min(920px, 100%);
    padding: 24px 16px 40px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.topbar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 12px;
}

.title {
    text-align: center;
}

.title h1 {
    margin: 0;
    font-family: "Fraunces", serif;
    font-size: clamp(2rem, 3vw, 2.6rem);
    letter-spacing: 0.2rem;
}

.subtitle {
    color: var(--muted);
    font-size: 0.95rem;
}

.top-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.language-selector {
    border: 1px solid var(--tile-border);
    background: var(--panel);
    color: var(--text);
    border-radius: 8px;
    padding: 8px 10px;
    font-weight: 600;
}

.icon-btn {
    background: var(--panel);
    color: var(--text);
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 8px 12px;
    cursor: pointer;
    box-shadow: 0 8px 18px var(--shadow);
    font-weight: 600;
}

.icon-btn:hover {
    border-color: var(--tile-border);
}

.main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

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

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

.row.current .tile {
    border-color: var(--color-present);
    box-shadow: 0 0 0 2px rgba(202, 164, 52, 0.2);
}

.tile {
    width: clamp(44px, 10vw, 64px);
    height: clamp(44px, 10vw, 64px);
    border-radius: 10px;
    border: 2px solid var(--tile-border);
    background: var(--tile-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text);
    transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
}

.tile.filled {
    background: var(--tile-filled);
    border-color: var(--muted);
}

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

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

.tile.absent {
    background: var(--color-absent);
    border-color: var(--color-absent);
    color: #fff;
}

.keyboard {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: min(700px, 100%);
}

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

.key {
    flex: 1;
    min-width: 32px;
    padding: 12px 8px;
    border-radius: 8px;
    border: none;
    background: var(--key-bg);
    color: var(--key-text);
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    font-size: 0.95rem;
    line-height: 1;
}

.key.key-wide {
    flex: 1.8;
    padding-inline: 6px;
    font-size: clamp(0.74rem, 1.8vw, 0.84rem);
    white-space: nowrap;
}

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

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

.key.absent {
    background: var(--color-absent);
    color: #fff;
}

body.theme-dark .key.absent {
    background: #8f4f5b;
    color: #fff;
}

.toast-container {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 30;
}

.toast {
    background: var(--panel);
    color: var(--text);
    padding: 10px 16px;
    border-radius: 10px;
    box-shadow: 0 10px 20px var(--shadow);
    font-weight: 600;
    opacity: 0;
    transform: translateY(-10px);
    animation: toast-in 0.25s ease forwards;
}

.toast.success {
    border-left: 4px solid var(--color-correct);
}

.toast.error {
    border-left: 4px solid #e25555;
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(8, 10, 14, 0.72);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 40;
    padding: 20px;
}

.modal.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--panel);
    color: var(--text);
    width: min(520px, 100%);
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 20px 40px var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.stat-card {
    background: var(--tile-bg);
    border-radius: 12px;
    padding: 10px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 1.4rem;
    font-weight: 700;
}

.stat-card .stat-label {
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08rem;
}

.stats-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.stats-subtitle {
    font-weight: 600;
    color: var(--muted);
}

.histogram {
    display: grid;
    gap: 6px;
}

.histogram-row {
    display: grid;
    grid-template-columns: 24px 1fr;
    align-items: center;
    gap: 8px;
}

.histogram-bar {
    height: 24px;
    background: var(--tile-bg);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.histogram-fill {
    height: 100%;
    background: var(--color-correct);
    border-radius: 8px;
    min-width: 22px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
    font-weight: 600;
}

.countdown {
    font-size: 1.6rem;
    font-weight: 700;
}

.btn {
    background: var(--color-correct);
    border: none;
    color: #fff;
    padding: 10px 16px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
}

.btn-secondary {
    background: var(--tile-filled);
    color: var(--text);
}

.share-actions {
    display: flex;
    gap: 10px;
}

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

.setting {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
}

.setting-copy {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.setting-title {
    font-weight: 600;
}

.setting-desc {
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.35;
}

.setting input {
    margin-top: 2px;
    flex-shrink: 0;
}

#setting-theme {
    min-width: 120px;
    border-radius: 8px;
    border: 1px solid var(--tile-border);
    background: var(--tile-bg);
    color: var(--text);
    padding: 6px 8px;
}

.help-content ul {
    margin: 8px 0 0 16px;
    padding: 0;
}

.help-example {
    margin-top: 12px;
}

.help-example-row {
    display: flex;
    gap: 6px;
    margin-bottom: 6px;
}

.help-example-tile {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid var(--tile-border);
    background: var(--tile-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.help-example-tile.correct {
    background: var(--color-correct);
    border-color: var(--color-correct);
    color: #fff;
}

.help-example-tile.present {
    background: var(--color-present);
    border-color: var(--color-present);
    color: #fff;
}

.help-example-tile.absent {
    background: var(--color-absent);
    border-color: var(--color-absent);
    color: #fff;
}

.meaning {
    background: var(--tile-bg);
    padding: 12px;
    border-radius: 12px;
    line-height: 1.4;
}

.meaning.meaning-loss {
    background: #fde8e8;
    border: 1px solid #f3b4b4;
    color: #6f1d1d;
}

.confetti {
    position: fixed;
    top: -10px;
    width: 8px;
    height: 14px;
    opacity: 0.9;
    animation: confetti-fall 2.4s ease-in forwards;
    z-index: 50;
}

.shake {
    animation: shake 0.45s ease;
}

.bounce .tile {
    animation: bounce 0.6s ease;
}

.flip {
    animation: flip 0.6s ease;
}

@keyframes flip {
    0% { transform: rotateX(0); }
    50% { transform: rotateX(90deg); }
    100% { transform: rotateX(0); }
}

@keyframes shake {
    0% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
    100% { transform: translateX(0); }
}

@keyframes bounce {
    0% { transform: translateY(0); }
    40% { transform: translateY(-14px); }
    70% { transform: translateY(6px); }
    100% { transform: translateY(0); }
}

@keyframes toast-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes confetti-fall {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(110vh) rotate(480deg); }
}

@media (max-width: 720px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .topbar {
        grid-template-columns: auto 1fr auto;
    }

    .icon-btn {
        padding: 8px;
    }

    .language-selector {
        max-width: 110px;
        font-size: 0.8rem;
    }

    .key-row {
        gap: 4px;
    }

    .key {
        min-width: 22px;
        padding: 10px 4px;
        font-size: 0.82rem;
    }

    .key.key-wide {
        flex: 2.2;
        padding-inline: 4px;
        font-size: clamp(0.7rem, 2.4vw, 0.8rem);
    }
}