/* Card Styles - Bicycle Deck Inspired */

.card {
    width: var(--card-width);
    height: var(--card-height);
    border-radius: var(--card-radius);
    position: relative;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    transform-style: preserve-3d;
    will-change: transform;
}

.card:hover {
    transform: translateY(-3px);
    z-index: 10;
}

.card.dragging {
    z-index: var(--z-dragging) !important;
    cursor: grabbing;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    transform: scale(1.05);
}

.card.selected {
    box-shadow: 0 0 0 3px var(--ui-primary), 0 5px 20px rgba(201, 162, 39, 0.4);
}

.card.hint,
.pile.hint {
    animation: hintPulse 1s ease-in-out infinite;
}

@keyframes hintPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(201, 162, 39, 0); }
    50% { box-shadow: 0 0 0 8px rgba(201, 162, 39, 0.4); }
}

/* Card Face */
.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: var(--card-radius);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    background: linear-gradient(145deg, #ffffff 0%, #f8f8f8 50%, #eeeeee 100%);
    border: 1px solid #ccc;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    overflow: hidden;
}

.card-face::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 50%);
    pointer-events: none;
}

/* Card Back */
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: var(--card-radius);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: rotateY(180deg);
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.2),
        0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Classic Bicycle Back Design */
.card-back.classic {
    background: linear-gradient(135deg, #1e3a5f 0%, #2a4a6f 50%, #1e3a5f 100%);
    border: 3px solid #c9a227;
    box-sizing: border-box;
}

.card-back.classic::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 1px solid rgba(201, 162, 39, 0.5);
    border-radius: 4px;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 3px,
        rgba(201, 162, 39, 0.1) 3px,
        rgba(201, 162, 39, 0.1) 6px
    );
}

.card-back.classic::after {
    content: '♠';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: calc(var(--card-width) * 0.4);
    color: rgba(201, 162, 39, 0.6);
}

/* Geometric Back Design */
.card-back.geometric {
    background: linear-gradient(135deg, #8b0000 0%, #a52a2a 50%, #8b0000 100%);
    border: 3px solid #ffd700;
    box-sizing: border-box;
}

.card-back.geometric::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(0deg, transparent, transparent 8px, rgba(255,215,0,0.1) 8px, rgba(255,215,0,0.1) 10px),
        repeating-linear-gradient(90deg, transparent, transparent 8px, rgba(255,215,0,0.1) 8px, rgba(255,215,0,0.1) 10px);
}

/* Floral Back Design */
.card-back.floral {
    background: linear-gradient(135deg, #2d5a27 0%, #3d6a37 50%, #2d5a27 100%);
    border: 3px solid #c9a227;
    box-sizing: border-box;
}

.card-back.floral::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    background: radial-gradient(circle at 25% 25%, rgba(201, 162, 39, 0.2) 0%, transparent 30%),
                radial-gradient(circle at 75% 25%, rgba(201, 162, 39, 0.2) 0%, transparent 30%),
                radial-gradient(circle at 25% 75%, rgba(201, 162, 39, 0.2) 0%, transparent 30%),
                radial-gradient(circle at 75% 75%, rgba(201, 162, 39, 0.2) 0%, transparent 30%),
                radial-gradient(circle at 50% 50%, rgba(201, 162, 39, 0.3) 0%, transparent 40%);
}

/* Modern Back Design */
.card-back.modern {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #1a1a2e 100%);
    border: 2px solid #4a69bd;
    box-sizing: border-box;
}

.card-back.modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(45deg, transparent 40%, rgba(74, 105, 189, 0.1) 40%, rgba(74, 105, 189, 0.1) 60%, transparent 60%),
        linear-gradient(-45deg, transparent 40%, rgba(74, 105, 189, 0.1) 40%, rgba(74, 105, 189, 0.1) 60%, transparent 60%);
}

/* Face down card */
.card.face-down .card-face {
    transform: rotateY(180deg);
}

.card.face-down .card-back {
    transform: rotateY(0deg);
}

/* Card Index (corner rank/suit) */
.card-index {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
    font-family: Georgia, 'Times New Roman', serif;
}

.card-index.top-left {
    top: 5px;
    left: 6px;
}

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

.card-index .rank {
    font-size: calc(var(--card-width) * 0.2);
    font-weight: bold;
}

.card-index .suit-symbol {
    font-size: calc(var(--card-width) * 0.15);
    margin-top: -2px;
}

/* Suit Colors */
.card.hearts .card-index,
.card.diamonds .card-index {
    color: var(--card-red);
}

.card.spades .card-index,
.card.clubs .card-index {
    color: var(--card-black);
}

/* Center Pips Area */
.card-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
    height: 60%;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}

/* Pip (suit symbol in center) */
.pip {
    font-size: calc(var(--card-width) * 0.22);
    line-height: 1;
}

.pip.red { color: var(--card-red); }
.pip.black { color: var(--card-black); }

.pip.inverted {
    transform: rotate(180deg);
}

/* Pip Rows for Number Cards */
.pip-row {
    display: flex;
    justify-content: space-around;
    width: 100%;
}

/* Face Card Styling */
.face-card-image {
    position: absolute;
    top: 15%;
    left: 10%;
    right: 10%;
    bottom: 15%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: calc(var(--card-width) * 0.5);
    opacity: 0.9;
}

.face-card-image.king::before { content: '♚'; }
.face-card-image.queen::before { content: '♛'; }
.face-card-image.jack::before { content: '♝'; }

.face-card-image.red { color: var(--card-red); }
.face-card-image.black { color: var(--card-black); }

/* Ace Card - Large Center Pip */
.card.ace .card-center {
    font-size: calc(var(--card-width) * 0.6);
}

/* Card Flip Animation */
.card.flipping {
    animation: flipCard 0.4s ease-in-out;
}

@keyframes flipCard {
    0% { transform: rotateY(0deg); }
    50% { transform: rotateY(90deg); }
    100% { transform: rotateY(0deg); }
}

/* Card Deal Animation */
.card.dealing {
    animation: dealCard 0.3s ease-out;
}

@keyframes dealCard {
    0% {
        opacity: 0;
        transform: translateY(-100px) rotate(-10deg) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(0deg) scale(1);
    }
}

/* Card Move Animation */
.card.moving {
    transition: left var(--anim-speed) ease, top var(--anim-speed) ease;
}

/* Invalid Move Shake */
.card.invalid {
    animation: invalidShake 0.4s ease;
}

@keyframes invalidShake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-10px); }
    40% { transform: translateX(10px); }
    60% { transform: translateX(-5px); }
    80% { transform: translateX(5px); }
}

/* Win Card Animation */
.card.win-flying {
    animation: winFly 1s ease-in forwards;
}

@keyframes winFly {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    100% {
        transform: translate(var(--fly-x, 0), var(--fly-y, -500px)) rotate(var(--fly-rotate, 360deg));
        opacity: 0;
    }
}

/* Stack Visual (multiple cards on pile) */
.stack-indicator {
    position: absolute;
    bottom: -2px;
    left: 2px;
    right: 2px;
    height: 4px;
    background: linear-gradient(to bottom, #ddd, #aaa);
    border-radius: 0 0 var(--card-radius) var(--card-radius);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Clickable empty deck placeholder */
.deck-placeholder {
    width: var(--card-width);
    height: var(--card-height);
    border: 2px dashed rgba(255, 255, 255, 0.4);
    border-radius: var(--card-radius);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.deck-placeholder:hover {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.05);
}

.deck-placeholder .refresh-icon {
    font-size: calc(var(--card-width) * 0.4);
    color: rgba(255, 255, 255, 0.5);
}

/* Foundation slot suit indicator */
.foundation-suit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: calc(var(--card-width) * 0.5);
    opacity: 0.3;
}

/* Drop zone highlighting */
.drop-zone.valid-drop {
    box-shadow: 0 0 20px rgba(201, 162, 39, 0.6);
}

.drop-zone.valid-drop::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 2px solid var(--ui-primary);
    border-radius: calc(var(--card-radius) + 4px);
    animation: dropPulse 0.5s ease infinite alternate;
}

@keyframes dropPulse {
    from { opacity: 0.5; }
    to { opacity: 1; }
}

/* Responsive card adjustments */
@media (max-width: 768px) {
    .card-index .rank {
        font-size: calc(var(--card-width) * 0.22);
    }

    .card-index .suit-symbol {
        font-size: calc(var(--card-width) * 0.17);
    }

    .card-index.top-left {
        top: 3px;
        left: 4px;
    }

    .card-index.bottom-right {
        bottom: 3px;
        right: 4px;
    }
}