:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --success: #10b981;
    --danger: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; touch-action: manipulation; user-select: none; }

.new-game-wrapper {
    background-color: var(--bg-color); color: var(--text-main);
    display: flex; justify-content: center; align-items: center;
    min-height: 100vh; overflow: hidden;
}

#game-container {
    width: 100%; max-width: 500px; background-color: var(--card-bg);
    border-radius: 16px; padding: 16px; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    position: relative;
    min-height: 600px;
    display: flex; flex-direction: column;
}

.screen { display: none; flex-direction: column; align-items: center; text-align: center; animation: fadeIn 0.3s; flex: 1; justify-content: center; }
.screen.active { display: flex; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.game-title { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; color: #c4b5fd; }
.instructions { color: var(--text-muted); margin-bottom: 32px; line-height: 1.6; padding: 0 20px; font-size: 1.1rem; }
.final-score { font-size: 1.5rem; font-weight: 700; color: #c4b5fd; margin-bottom: 24px; }

.btn {
    border: none; padding: 12px 24px; border-radius: 8px; font-size: 1.1rem; font-weight: 700;
    color: white; cursor: pointer; transition: all 0.2s; width: 100%; max-width: 250px;
}
.btn:active { transform: scale(0.95); }
.btn.primary { background-color: var(--primary); }
.btn.primary:hover { background-color: var(--primary-hover); }

.header { display: flex; justify-content: space-between; width: 100%; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid #334155; font-weight: 700; font-size: 1.1rem; color: #c4b5fd; }

.actions-area { display: flex; justify-content: space-between; width: 100%; margin-bottom: 20px; align-items: center;}
.btn-sm {
    background: #334155; border: none; color: #fff; padding: 8px 12px; border-radius: 6px; cursor: pointer; font-weight: bold; font-size: 0.9rem;
}
.btn-sm:active { background: #475569; }

.mode-toggle { display: flex; gap: 4px; background: #334155; padding: 4px; border-radius: 6px; }
.mode-toggle button {
    background: transparent; border: none; color: #94a3b8; padding: 6px 12px; border-radius: 4px; cursor: pointer; font-weight: bold;
}
.mode-toggle button.active { background: #1e293b; color: #fff; }

.game-area { width: 100%; flex: 1; display: flex; justify-content: center; align-items: center; overflow: auto;}

#grid-container {
    display: grid;
    gap: 2px;
    background: #475569;
    padding: 2px;
    border: 2px solid #64748b;
    border-radius: 8px;
}

.cell {
    background: #1e293b;
    display: flex; justify-content: center; align-items: center;
    font-size: 0.9rem; font-weight: bold; color: #cbd5e1;
    cursor: pointer;
    user-select: none;
}
.cell.header-cell {
    background: #334155;
    color: #94a3b8;
    font-size: 0.8rem;
    padding: 2px;
    text-align: center;
    flex-direction: column;
    cursor: default;
}

.cell.playable:active { opacity: 0.8; }
.cell.filled { background: #c4b5fd; }
.cell.crossed { background: #1e293b; position: relative; }
.cell.crossed::after { content: '❌'; font-size: 0.8rem; position: absolute; opacity: 0.5; }
.cell.wrong { background: rgba(239, 68, 68, 0.5); }
.cell.hinted { background: #fbbf24 !important; }

.controls-area { margin-top: 20px; width: 100%; display: flex; justify-content: center; }

.msg-overlay {
    position: absolute; top: 40%; left: 0; width: 100%; text-align: center;
    font-size: 2.5rem; font-weight: 900; color: #10b981; text-shadow: 0 0 15px #000;
    z-index: 50; animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.msg-overlay.hidden { display: none; }
@keyframes popIn { 0% { transform: scale(0); } 100% { transform: scale(1); } }