.blackjack-page {
    display: flex;
    justify-content: center;
    padding: 2rem 1rem;
    font-family: Arial, Helvetica, sans-serif;
}

.blackjack-layout {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

#blackjack-table {
    background: #14532d;
    border: 8px solid #7c3f00;
    border-radius: 16px;
    padding: 2rem;
    width: 100%;
    max-width: 560px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
    color: #f5f5f5;
    text-align: center;
}

#rules-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0;
}

#rules-btn {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    background: #a3a3a3;
    color: #1f2937;
    border: none;
    border-radius: 8px;
    padding: 1rem 0.5rem;
    font-size: 0.95rem;
    font-weight: bold;
    letter-spacing: 0.05em;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: background 0.15s ease, transform 0.15s ease;
}

#rules-btn:hover {
    background: #d4d4d4;
    transform: translateY(-2px);
}

#rules-panel {
    background: #ffffff;
    color: #1f2937;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    width: 260px;
    max-width: 260px;
    padding: 1.25rem;
    margin-left: 0.75rem;
    text-align: left;
    overflow: hidden;
    transition: max-width 0.3s ease, opacity 0.3s ease, padding 0.3s ease, margin 0.3s ease;
}

#rules-panel.closed {
    max-width: 0;
    width: 0;
    padding: 1.25rem 0;
    opacity: 0;
    margin: 0;
    pointer-events: none;
}

.rules-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.rules-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

#rules-close-btn {
    border: none;
    background: transparent;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    color: #6b7280;
    padding: 0 0.25rem;
}

#rules-close-btn:hover {
    color: #111827;
}

#rules-panel ul {
    margin: 0;
    padding-left: 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
    line-height: 1.4;
}

.hand-area {
    margin-bottom: 1.5rem;
}

.hand-area h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

.cards {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.6rem;
    min-height: 100px;
    perspective: 600px;
}

.card {
    width: 66px;
    height: 94px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.35), 0 1px 2px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s ease;
    transform-style: preserve-3d;
}

.card.dealing {
    opacity: 0;
    transform: translateY(-40px) scale(0.7);
}

.card:not(.dealing) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.card.flip {
    transform: rotateY(90deg);
}

.card-face,
.card-back {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-face {
    background: linear-gradient(155deg, #ffffff 0%, #f1f2f4 100%);
    border: 1px solid #d1d5db;
    color: #111827;
}

.card-face.red {
    color: #dc2626;
}

.corner {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.7rem;
    font-weight: bold;
    line-height: 1.05;
}

.corner-top {
    top: 5px;
    left: 6px;
}

.corner-bottom {
    bottom: 5px;
    right: 6px;
    transform: rotate(180deg);
}

.pip {
    font-size: 1.9rem;
    filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.15));
}

.card-back {
    background: #1e3a8a;
    border: 2px solid #facc15;
    padding: 4px;
}

.card-back-inner {
    width: 100%;
    height: 100%;
    border-radius: 6px;
    border: 1px solid rgba(250, 204, 21, 0.5);
    background: repeating-linear-gradient(
        45deg,
        #2563eb 0,
        #2563eb 5px,
        #1e40af 5px,
        #1e40af 10px
    );
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-back-inner::after {
    content: '♠';
    font-size: 1.5rem;
    color: #facc15;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

#message {
    min-height: 1.5rem;
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

#message.pop {
    animation: message-pop 0.3s ease;
}

@keyframes message-pop {
    0% {
        transform: scale(0.85);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

#controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

#controls button {
    padding: 0.6rem 1.4rem;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: #facc15;
    color: #1f2937;
    font-weight: bold;
    transition: transform 0.1s ease, opacity 0.1s ease;
}

#controls button:hover:not(:disabled) {
    transform: translateY(-2px);
}

#controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#new-game-btn {
    background: #38bdf8;
}

#balance-bar {
    font-size: 1.15rem;
    font-weight: bold;
    color: #facc15;
    margin-bottom: 0.75rem;
    letter-spacing: 0.03em;
}

#bet-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

#bet-row label {
    font-size: 0.95rem;
    color: #f5f5f5;
}

#bet-row input {
    width: 80px;
    padding: 0.4rem 0.5rem;
    border-radius: 6px;
    border: 1px solid #7c3f00;
    font-size: 0.95rem;
    text-align: center;
}

#bet-row input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
#place-bet-btn {
    padding: 0.5rem 1.1rem;
    font-size: 0.95rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: #38bdf8;
    color: #1f2937;
    font-weight: bold;
    transition: transform 0.1s ease, opacity 0.1s ease;
}

#place-bet-btn:hover:not(:disabled) {
    transform: translateY(-2px);
}

#place-bet-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}