:root { --bg: #121212; --card: #1e1e1e; --text: #e0e0e0; --primary: #03dac6; }
*, *::before, *::after { box-sizing: border-box; }

body { 
    background: var(--bg); 
    color: var(--text); 
    font-family: sans-serif; 
    padding: 20px; 
    
    max-width: 600px; 
    margin: 0 auto; 
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; width: 100%; }
.back-btn { text-decoration: none; color: #888; }
h1 { margin: 0; color: var(--primary); font-size: 1.5rem; }

.container-flex { display: flex; gap: 10px; width: 100%; }
.prod-col { flex: 1; background: var(--card); padding: 15px; border-radius: 12px; border: 2px solid transparent; transition: 0.3s; }
input { width: 100%; padding: 10px; background: #2d2d2d; border: 1px solid #333; color: white; border-radius: 6px; margin-bottom: 10px; font-size: 1rem; }

.btn-primary { width: 100%; padding: 15px; background: var(--primary); border: none; border-radius: 8px; font-weight: bold; color: black; cursor: pointer; margin-top: 20px; font-size: 1.1rem; }

.winner { border-color: var(--primary); background-color: #1a2f2b; }
.loser { opacity: 0.5; }
.result-box { text-align: center; margin-top: 20px; padding: 15px; background: var(--card); border-radius: 12px; width: 100%; }
.hidden { display: none; }
.winner-text { font-size: 1.2rem; font-weight: bold; color: white; }
.saving-text { color: var(--primary); margin-top: 5px; }
.home-btn {
    text-decoration: none;
    font-size: 1.5rem;
    padding: 5px 10px;
    background: #333;
    border-radius: 8px;
    transition: 0.2s;
}