:root {
    --bg-color: #0f0c29;
    --bg-gradient: linear-gradient(to right, #24243e, #302b63, #0f0c29);
    --card-bg: rgba(255, 255, 255, 0.05);
    --gold: #fcc200;
    --silver: #bdc3c7;
    --accent: #ff416c;
    --text: #ffffff;
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: var(--bg-color);
    background: var(--bg-gradient);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1000px;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 3rem;
    letter-spacing: 4px;
    background: linear-gradient(to bottom, var(--gold), #ff9a00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 10px 20px rgba(0,0,0,0.5);
}

.house-bank {
    margin-top: 10px;
    color: var(--silver);
    font-size: 1.1rem;
}

.battle-arena {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    perspective: 1000px;
}

.player-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 30px;
    border-radius: 20px;
    width: 250px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
    position: relative;
}

.player-card.my-turn {
    border-color: #00ff88;
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.2);
}

.player-card.my-turn::after {
    content: 'GILIRANMU';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #00ff88;
    color: #000;
    font-size: 0.65rem;
    font-weight: 900;
    padding: 2px 12px;
    border-radius: 50px;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(0,255,136,0.3);
    animation: pulse-glow 1.5s infinite;
}

@keyframes pulse-glow {
    0% { opacity: 0.8; }
    50% { opacity: 1; transform: translateX(-50%) scale(1.05); }
    100% { opacity: 0.8; }
}

.player-controls {
    margin-top: 15px;
    padding: 10px;
    background: rgba(0,0,0,0.3);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
}

.player-card.winner {
    border-color: var(--gold);
    box-shadow: 0 0 30px rgba(252, 194, 0, 0.3);
    transform: translateY(-10px) scale(1.05);
}

.player-card.loser {
    animation: shake 0.5s ease;
    opacity: 0.7;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.avatar {
    width: 60px;
    height: 60px;
    background: var(--accent);
    border-radius: 50%;
    margin: 0 auto 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
}

#player-b .avatar {
    background: #4776E6;
}

.action-btn-small {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    cursor: pointer;
    margin-top: 5px;
    transition: all 0.2s;
}

.action-btn-small:hover {
    background: var(--gold);
    color: black;
}

.bet-controls {
    margin-top: 20px;
    text-align: left;
}

.ready-status {
    margin-top: 15px;
    font-size: 0.8rem;
    font-weight: bold;
    letter-spacing: 1px;
    padding: 5px;
    border-radius: 5px;
    background: rgba(0,0,0,0.2);
    color: #666;
}

.ready-status.ready {
    color: #00ff88;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.bet-controls input {
    width: 100%;
    padding: 8px;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--glass-border);
    color: white;
    border-radius: 5px;
    margin-top: 5px;
}

.side-selection, .side-info {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.side-btn {
    padding: 8px 15px;
    border: 1px solid var(--glass-border);
    background: transparent;
    color: white;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s;
}

.side-btn.active {
    background: var(--gold);
    color: black;
    border-color: var(--gold);
}

.coin-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

#coin {
    position: relative;
    width: 150px;
    height: 150px;
    transform-style: preserve-3d;
    transition: transform 1s ease-in-out;
}

.side {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    backface-visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.heads {
    background: radial-gradient(circle at 30% 30%, #ffd700, #b8860b);
    border: 5px solid #8b4513;
}

.tails {
    background: radial-gradient(circle at 30% 30%, #e0e0e0, #757575);
    border: 5px solid #424242;
    transform: rotateY(180deg);
}

.coin-face {
    font-size: 4rem;
    font-weight: bold;
    color: rgba(0,0,0,0.3);
    text-shadow: 1px 1px 2px rgba(255,255,255,0.3);
}

/* 3D Depth effect */
.side::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 10px solid rgba(0,0,0,0.1);
}

#toss-btn {
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: bold;
    background: var(--gold);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(252, 194, 0, 0.4);
    transition: transform 0.2s, background 0.2s;
}

#toss-btn:hover {
    transform: scale(1.05);
    background: #ffda44;
}

#toss-btn:active {
    transform: scale(0.95);
}

#toss-btn:disabled {
    background: var(--silver);
    cursor: not-allowed;
    box-shadow: none;
}

.log-container {
    margin-top: 50px;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 20px;
}

#battle-log {
    height: 100px;
    overflow-y: auto;
    margin-top: 10px;
    font-size: 0.9rem;
}

.log-entry {
    padding: 5px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    color: var(--silver);
}

.log-entry.win { color: #00ff88; }
.log-entry.loss { color: #ff416c; }

/* Coin Flipping Classes */
.flip-heads {
    animation: flipHeads 3s ease-out forwards;
}

.flip-tails {
    animation: flipTails 3s ease-out forwards;
}

@keyframes flipHeads {
    from { transform: rotateY(0); }
    to { transform: rotateY(1800deg); }
}

@keyframes flipTails {
    from { transform: rotateY(0); }
    to { transform: rotateY(1980deg); }
}

/* Mobile Responsiveness */
@media (max-width: 700px) {
    .battle-arena {
        flex-direction: column;
        align-items: stretch;
    }

    .player-card {
        width: 100%;
    }

    .coin-container, .vs-zone {
        order: -1;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .container {
        width: 100%;
        padding: 12px;
    }
}

.rules-container {
    margin-top: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    color: var(--silver);
}

.rules-container h3 {
    margin-bottom: 10px;
    color: var(--gold);
}

.rules-container ul {
    list-style-position: inside;
    font-size: 0.9rem;
}

.rules-container li {
    margin-bottom: 5px;
}

/* ===== LOBBY ===== */
#lobby-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-gradient);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    padding: 20px;
}

.lobby-panel {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px 36px;
    width: 100%;
    max-width: 480px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.lobby-panel h1 {
    font-size: 2rem;
    letter-spacing: 4px;
    background: linear-gradient(to bottom, var(--gold), #ff9a00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}

.lobby-subtitle {
    color: var(--silver);
    font-size: 0.85rem;
    letter-spacing: 2px;
    margin-bottom: 28px;
    text-transform: uppercase;
}

#login-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#username-input {
    padding: 12px 16px;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

#username-input:focus {
    border-color: var(--gold);
}

.action-btn {
    padding: 12px;
    background: var(--gold);
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: bold;
    color: #000;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

.action-btn:hover { transform: scale(1.03); background: #ffda44; }
.action-btn.btn-green { background: #00ff88; }
.action-btn.btn-red   { background: #ff4757; color: #fff; }

.my-info {
    background: rgba(252,194,0,0.08);
    border: 1px solid rgba(252,194,0,0.2);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.9rem;
    color: var(--silver);
    margin-bottom: 20px;
    text-align: left;
}

.my-info strong { color: var(--gold); }

.lobby-header-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.lobby-header-row h3 {
    color: var(--text);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.badge {
    background: var(--accent);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    padding: 2px 8px;
    border-radius: 20px;
}

.empty-msg { color: #666; font-size: 0.9rem; padding: 10px 0; }

.player-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(255,255,255,0.04);
    margin-bottom: 8px;
    transition: background 0.2s;
}

.player-row:hover { background: rgba(255,255,255,0.07); }
.player-row.in-game { opacity: 0.5; }

.player-row-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.dot-online { background: #00ff88; box-shadow: 0 0 6px #00ff88; }
.dot-game   { background: var(--gold); }

.row-name { font-weight: bold; font-size: 0.95rem; }
.row-bal  { color: var(--silver); font-size: 0.8rem; }

.tag-ingame {
    font-size: 0.7rem;
    color: var(--gold);
    border: 1px solid var(--gold);
    border-radius: 20px;
    padding: 2px 8px;
}

/* ===== CHALLENGE MODAL ===== */
#challenge-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    justify-content: center;
    align-items: center;
    z-index: 200;
}

.modal-box {
    background: #1e1b4b;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px 28px;
    text-align: center;
    min-width: 280px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

.modal-box p { font-size: 1.1rem; margin-bottom: 0; }
.modal-box strong { color: var(--gold); }

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 20px;
}

/* ===== GAME SCREEN EXTRAS ===== */
.leave-btn {
    margin-top: 8px;
    background: transparent;
    border: 1px solid #ff4757;
    color: #ff4757;
    padding: 4px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: background 0.2s;
}

.leave-btn:hover { background: rgba(255,71,87,0.15); }

.vs-msg { font-size: 0.8rem; margin-top: 10px; color: #888; text-align: center; }

.proposed-bet {
    font-size: 1.4rem;
    color: #00ff88;
    font-weight: bold;
    padding: 8px 0;
}