:root {
    --accent: #2481cc;
    --accent-hover: #1e70b3;
    --bg: #ffffff;
    --bg-card: #f2f3f5;
    --text: #000000;
    --muted: #7a7a7a;
    --radius: 14px;
    --shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
    --transition: 0.25s ease;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: "Inter", system-ui, sans-serif;
    margin: 0;
    padding: 0;
    max-width: 480px;
    margin-inline: auto;
    padding-bottom: 80px; /* для таб-меню */
}

h3 { 
    margin-top: 0; 
    margin-bottom: 10px; 
    font-size: 1.2rem; 
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin: 16px;
    transition: transform var(--transition);
}
.card:hover { transform: translateY(-2px); }

button {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 10px 18px;
    cursor: pointer;
    font-weight: 600;
    transition: background var(--transition), transform var(--transition);
}
button:hover { background: var(--accent-hover); transform: scale(1.02); }
button:active { transform: scale(0.98); }

.balance-buttons {
    display: flex;
    gap: 10px;
}
.balance-buttons button { flex: 1; }

input[type="number"] {
    width: 100%; 
    padding: 10px 12px; 
    margin: 10px 0;
    border-radius: var(--radius); 
    border: 1px solid rgba(0,0,0,0.1);
    font-size: 1rem; 
    outline: none; 
    transition: border var(--transition), box-shadow var(--transition);
}
input[type="number"]:focus { border-color: var(--accent); box-shadow:0 0 0 3px rgba(36,129,204,0.2); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 8px; }
.grid button { padding: 14px; font-size: 1rem; }

.dice { 
    font-size: 40px; 
    text-align: center; 
    margin-top: 16px; 
    font-weight: 500; 
    height: 60px; 
    line-height: 60px; 
    transition: transform 0.3s ease; 
}
.dice.spin { 
    animation: spinDice 0.8s ease-in-out infinite; 
}
@keyframes spinDice { 
    0%{transform:rotate(0deg) scale(1);}
    25%{transform:rotate(90deg) scale(1.1);}
    50%{transform:rotate(180deg) scale(1);}
    75%{transform:rotate(270deg) scale(1.1);}
    100%{transform:rotate(360deg) scale(1);}
}

.ref-section p { margin:6px 0; }
.ref-link { color: var(--accent); word-break: break-all; font-weight: 500; }

footer { 
    text-align:center; 
    color: var(--muted); 
    font-size:0.85rem; 
    margin-top:30px; 
    opacity:0.8; 
}

/* ===== Нижнее таб-меню ===== */
.tabs { 
    position: fixed; 
    bottom: 0; 
    left: 0; 
    width: 100%; 
    display: flex; 
    background: var(--bg-card); 
    box-shadow: 0 -2px 8px rgba(0,0,0,0.15); 
    z-index: 999;
}
.tab { 
    flex: 1; 
    text-align: center; 
    padding: 12px 0; 
    cursor: pointer; 
    font-weight: 600; 
    transition: background var(--transition); 
}
.tab.active { 
    background: var(--accent); 
    color: #fff; 
    border-radius: var(--radius) var(--radius) 0 0; 
}
.tab-content { display: none; }
.tab-content.active { display: block; padding-bottom: 80px; }

/* ===== Статистика ===== */
.stat { display:flex; justify-content:space-between; margin-bottom:6px; font-size: 1rem; }