:root {
    --parchment: #f4ebd8;
    --parchment-dark: #e0cca6;
    --wood: #4a2e15;
    --ocean: #1e4d77;
    --ocean-grid: rgba(255, 255, 255, 0.15);
}

body {
    background-color: #2c1e16;
    background-image: url('https://images.unsplash.com/photo-1582841626027-e432d4310574?auto=format&fit=crop&q=80&w=1920');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: 'Special Elite', cursive;
    color: #3e2723;
}

.hidden { display: none !important; }

.overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000;
}

.menu-box {
    background: var(--parchment);
    background-image: url('https://www.transparenttextures.com/patterns/old-paper.png');
    padding: 60px;
    border: 4px solid #5d4037;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 15px 50px rgba(0,0,0,0.8), inset 0 0 30px rgba(139, 90, 43, 0.3);
}

.menu-box h1, .menu-box h2 { 
    font-family: 'Pirata One', cursive; 
    color: #3e2723; 
    margin: 0; 
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}
.menu-box h1 { font-size: 5rem; }
.menu-box h2 { font-size: 3.5rem; }
.menu-box p { font-size: 1.4rem; font-weight: bold; margin-bottom: 30px; }

.game-container {
    background: var(--parchment);
    background-image: url('https://www.transparenttextures.com/patterns/old-paper.png');
    padding: 30px 50px;
    border: 3px solid #6d4c41;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.8), inset 0 0 50px rgba(139, 90, 43, 0.2);
    position: relative;
    overflow: hidden; 
}

.compass-decoration {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 300px;
    height: 300px;
    background-image: url('https://upload.wikimedia.org/wikipedia/commons/f/f6/Compass_rose_brown.svg');
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

.header { position: relative; z-index: 10; border-bottom: 2px dashed #8d6e63; padding-bottom: 15px; margin-bottom: 20px; text-align: center; }
.header h2 { margin: 0; font-size: 2rem; color: #3e2723; }

.battlefield { display: flex; gap: 50px; align-items: flex-start; position: relative; z-index: 10; }
.board-section h3 { font-family: 'Pirata One', cursive; font-size: 2rem; margin-top: 0; color: #4e342e; text-align: center; }

.grid {
    display: grid;
    grid-template-columns: repeat(10, 40px);
    grid-template-rows: repeat(10, 40px);
    background: var(--ocean);
    border: 4px solid #3e2723;
    position: relative;
    width: 400px; height: 400px;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

.cell { width: 40px; height: 40px; border: 1px solid var(--ocean-grid); position: relative; }

.shipyard {
    display: flex; flex-direction: column; gap: 15px;
    min-width: 220px; padding: 15px;
    background: rgba(139, 90, 43, 0.1);
    border: 1px dashed #8d6e63;
    border-radius: 5px;
}

.ship-slot { min-height: 40px; width: 100%; display: flex; align-items: center; }

.ship-drag {
    background: var(--wood);
    background-image: repeating-linear-gradient(45deg, rgba(0,0,0,0.1), rgba(0,0,0,0.1) 2px, transparent 2px, transparent 4px);
    border: 2px solid #2e1d10;
    cursor: grab; position: relative; z-index: 10;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.4);
}

.hit::after, .miss::after, .sunk::after {
    content: ''; position: absolute; inset: 0; z-index: 100;
    display: flex; justify-content: center; align-items: center;
}
.hit::after { background: rgba(255, 69, 0, 0.6); content: '💥'; font-size: 22px; }
.sunk::after { background: rgba(0, 0, 0, 0.85); content: '💀'; font-size: 24px; }
.miss::after { content: '🌊'; font-size: 20px; opacity: 0.8; } 

#start-battle, #play-btn, #btn-heads, #btn-tails {
    background: linear-gradient(to bottom, #795548, #4e342e);
    color: #f4ebd8; border: 2px solid #3e2723; padding: 12px 30px;
    font-family: 'Pirata One', cursive; font-size: 1.5rem; cursor: pointer;
    border-radius: 4px; box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    transition: transform 0.1s, box-shadow 0.1s;
    margin: 5px;
}

#start-battle:hover, #play-btn:hover, #btn-heads:hover, #btn-tails:hover {
    transform: translateY(2px);
    box-shadow: 0 2px 3px rgba(0,0,0,0.3);
}

/* --- STYLE DLA MONETY --- */
#coin-container {
    perspective: 1000px;
    margin: 30px auto;
    width: 120px;
    height: 120px;
}

#coin {
    width: 100%; height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border-radius: 50%;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
}

.coin-face {
    position: absolute; width: 100%; height: 100%;
    backface-visibility: hidden;
    border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    font-family: 'Pirata One', cursive; font-size: 1.8rem; color: #4a2e15;
    background: radial-gradient(circle, #f4ce42 0%, #b8860b 100%);
    border: 4px solid #8b6508;
    box-sizing: border-box;
    text-shadow: 1px 1px 2px rgba(255,255,255,0.4);
}

.coin-back { transform: rotateY(180deg); }

.spinning { animation: spin 0.4s linear infinite; }
@keyframes spin { 0% { transform: rotateY(0deg); } 100% { transform: rotateY(360deg); } }

#coin-result { font-size: 2rem; font-family: 'Pirata One', cursive; margin-top: 20px; text-shadow: 1px 1px 3px rgba(0,0,0,0.3); }