@font-face {
    font-family: 'm6x11';
    src: url('m6x11plus.ttf') format('truetype');
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Balatro color palette */
    --balatro-bg: #1a0f2e;
    --balatro-dark: #0f0820;
    --balatro-purple: #6c3ba8;
    --balatro-pink: #ff6b9d;
    --balatro-cyan: #00e5ff;
    --balatro-gold: #ffd700;
    --balatro-red: #ff4757;
    --balatro-green: #2ecc71;

    /* Card colors */
    --card-bg: #2a1f3d;
    --card-glow: rgba(255, 107, 157, 0.4);
    --text: #ffffff;
    --text-dim: #b8a8d8;
}

body {
    font-family: 'm6x11', 'Courier New', monospace;
    background: var(--balatro-dark);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
    position: relative;
}

/* Animated background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(108, 59, 168, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(255, 107, 157, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
    animation: bgShift 20s ease infinite alternate;
    pointer-events: none;
}

@keyframes bgShift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-10px, -10px) scale(1.05); }
}

/* ===== INTRO SCREEN ===== */
.intro-screen {
    position: fixed;
    inset: 0;
    background: var(--balatro-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 80px;
    z-index: 1000;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.intro-screen.fade-out {
    opacity: 0;
    transform: scale(1.2);
    pointer-events: none;
}

/* 3D Floating Deck */
.deck-3d {
    perspective: 2000px;
    width: 400px;
    height: 500px;
    position: relative;
}

.deck-stack {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: float3d 8s ease-in-out infinite;
}

@keyframes float3d {
    0%, 100% {
        transform: rotateY(0deg) rotateX(15deg) translateY(0px);
    }
    25% {
        transform: rotateY(90deg) rotateX(15deg) translateY(-20px);
    }
    50% {
        transform: rotateY(180deg) rotateX(15deg) translateY(0px);
    }
    75% {
        transform: rotateY(270deg) rotateX(15deg) translateY(-20px);
    }
}

/* Create stacked card effect */
.deck-stack::before,
.deck-stack::after {
    content: '';
    position: absolute;
    width: 280px;
    height: 400px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background-image: url('cards/card_back.png');
    background-size: cover;
    background-position: center;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    filter: brightness(1.1);
    image-rendering: pixelated;
}

.deck-stack::after {
    transform: translate(-50%, -50%) translateZ(-15px);
    opacity: 0.7;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

/* Start Button */
.start-button {
    padding: 24px 64px;
    font-size: 28px;
    font-weight: bold;
    font-family: 'm6x11', monospace;
    color: white;
    background: var(--balatro-purple);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 2px;
}

.start-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.start-button:active {
    transform: translateY(0);
}

/* Light flash transition overlay */
.light-flash {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.6) 0%, rgba(200, 180, 255, 0.3) 50%, transparent 70%);
    opacity: 0;
    pointer-events: none;
    z-index: 9999;
    transition: opacity 0.4s ease;
}

.light-flash.active {
    opacity: 1;
}

/* ===== MAIN SCREEN ===== */
.main-screen {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    opacity: 0;
    animation: fadeInMain 1s ease 0.6s forwards;
}

@keyframes fadeInMain {
    from {
        opacity: 0;
        filter: brightness(3);
    }
    to {
        opacity: 1;
        filter: brightness(1);
    }
}

/* Top Bar */
.top-bar {
    padding: 20px 40px;
    background: rgba(26, 15, 46, 0.3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    gap: 24px;
}

.top-bar h1 {
    font-size: 32px;
    font-weight: bold;
    color: var(--text);
    letter-spacing: 1px;
}

.right-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.leaderboard-toggle {
    padding: 8px 12px;
    font-size: 14px;
    font-family: 'm6x11', monospace;
    font-weight: bold;
    color: white;
    background: rgba(42, 31, 61, 0.6);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.leaderboard-toggle:hover {
    transform: translateY(-1px);
    background: rgba(42, 31, 61, 0.8);
}

.auth-menu {
    position: relative;
}

.auth-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(42, 31, 61, 0.4);
    font-size: 12px;
    font-family: 'm6x11', monospace;
    color: var(--text-dim);
    border: none;
    cursor: pointer;
}

.auth-indicator .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #6b6b6b;
    box-shadow: 0 0 6px rgba(0, 0, 0, 0.5);
}

.auth-indicator.signed-in {
    color: var(--text);
}

.auth-indicator.signed-in .dot {
    background: var(--balatro-cyan);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.8);
}

.auth-panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    background: rgba(26, 15, 46, 0.95);
    border: 1px solid rgba(108, 59, 168, 0.5);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    min-width: 240px;
    z-index: 2000;
}

.auth-menu.open .auth-panel {
    display: flex;
}

#auth-email {
    width: 100%;
    padding: 8px 10px;
    font-size: 14px;
    font-family: 'm6x11', monospace;
    background: rgba(42, 31, 61, 0.5);
    border: none;
    border-radius: 6px;
    color: var(--text);
}

#auth-password {
    width: 100%;
    padding: 8px 10px;
    font-size: 14px;
    font-family: 'm6x11', monospace;
    background: rgba(42, 31, 61, 0.5);
    border: none;
    border-radius: 6px;
    color: var(--text);
}

#auth-email:focus,
#auth-password:focus {
    outline: none;
    background: rgba(42, 31, 61, 0.7);
}

.auth-btn {
    padding: 8px 12px;
    font-size: 14px;
    font-family: 'm6x11', monospace;
    font-weight: bold;
    color: white;
    background: var(--balatro-purple);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.auth-btn:hover {
    transform: translateY(-1px);
    background: var(--balatro-pink);
}

.auth-btn-secondary {
    background: rgba(42, 31, 61, 0.6);
}

.auth-btn-secondary:hover {
    background: rgba(42, 31, 61, 0.8);
}

.auth-status {
    font-size: 12px;
    color: var(--text-dim);
}

.stat-badge {
    padding: 8px 16px;
    background: rgba(42, 31, 61, 0.5);
    border-radius: 8px;
    font-size: 18px;
}

.stat-badge .label {
    color: var(--text-dim);
    margin-right: 8px;
}

.stat-badge .value {
    color: var(--balatro-gold);
    font-weight: bold;
}

.suit-badges {
    display: flex;
    gap: 12px;
}

.suit-badge {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(42, 31, 61, 0.5);
    border-radius: 6px;
    font-size: 20px;
    position: relative;
}

.suit-badge img {
    width: 16px;
    height: 16px;
    image-rendering: pixelated;
}

.suit-badge .count {
    position: absolute;
    top: -6px;
    right: -6px;
    background: rgba(255, 215, 0, 0.9);
    color: var(--balatro-dark);
    font-size: 10px;
    font-weight: bold;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Main Content Area */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 30px 40px 20px;
    overflow: hidden;
    gap: 20px;
}

.info-section {
    flex: 1;
    background: rgba(42, 31, 61, 0.3);
    border-radius: 12px;
    padding: 30px;
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
}

.leaderboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.leaderboard-header h3 {
    font-size: 18px;
    color: var(--balatro-cyan);
}

.leaderboard-sub {
    font-size: 12px;
    color: var(--text-dim);
}

.leaderboard-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px 16px;
    font-size: 14px;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: rgba(42, 31, 61, 0.3);
    border-radius: 6px;
    padding: 6px 8px;
}

.leaderboard-item .rank {
    color: var(--balatro-gold);
    font-weight: bold;
    min-width: 28px;
}

.leaderboard-item .name {
    flex: 1;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.leaderboard-item .score {
    color: var(--text-dim);
}

@media (max-width: 900px) {
    .leaderboard-list {
        grid-template-columns: 1fr;
    }
}

.leaderboard-modal {
    position: fixed;
    inset: 0;
    background: rgba(10, 6, 20, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    padding: 20px;
}

.leaderboard-modal.open {
    display: flex;
}

.leaderboard-modal-content {
    width: min(720px, 92vw);
    max-height: 80vh;
    background: rgba(26, 15, 46, 0.98);
    border: 1px solid rgba(108, 59, 168, 0.6);
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    padding: 18px;
    overflow: auto;
}

.leaderboard-close {
    padding: 6px 10px;
    font-size: 12px;
    font-family: 'm6x11', monospace;
    font-weight: bold;
    color: white;
    background: rgba(42, 31, 61, 0.6);
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.info-section h2 {
    font-size: 28px;
    color: var(--balatro-pink);
    margin-bottom: 20px;
}

.conventions-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 24px;
}

.conventions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.convention-item {
    padding: 12px 16px;
    background: rgba(108, 59, 168, 0.15);
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.3s ease;
}

.convention-item:hover {
    background: rgba(108, 59, 168, 0.25);
}

.convention-item .suit {
    font-size: 20px;
    margin-right: 12px;
}

.convention-item.clubs .suit { color: var(--balatro-green); }
.convention-item.diamonds .suit { color: var(--balatro-red); }
.convention-item.hearts .suit { color: var(--balatro-pink); }
.convention-item.spades .suit { color: var(--balatro-purple); }

/* Problem Display Area (hidden by default, shown in info-section) */
.problem-display {
    display: none;
}

/* Problem content shown in info section */
.problem-content {
    display: none;
    flex: 1;
    flex-direction: column;
    position: relative;
}

.problem-content.show {
    display: flex;
}


.problem-content h3 {
    font-size: 20px;
    color: var(--balatro-pink);
    margin-bottom: 12px;
    flex-shrink: 0;
}

.problem-text {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    margin-bottom: 16px;
    white-space: pre-wrap;
}

.answer-section {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-shrink: 0;
}

#answer-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 16px;
    font-family: 'm6x11', monospace;
    background: rgba(42, 31, 61, 0.5);
    border: none;
    border-radius: 6px;
    color: var(--text);
    transition: all 0.2s ease;
}

#answer-input:focus {
    outline: none;
    background: rgba(42, 31, 61, 0.7);
}

.submit-btn {
    padding: 12px 24px;
    font-size: 16px;
    font-family: 'm6x11', monospace;
    font-weight: bold;
    color: white;
    background: var(--balatro-purple);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-1px);
    background: var(--balatro-pink);
}

.submit-btn:active {
    transform: translateY(0);
}

.feedback {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feedback.show {
    opacity: 1;
}

.feedback.correct {
    background: rgba(46, 204, 113, 0.15);
    color: var(--balatro-green);
}

.feedback.incorrect {
    background: rgba(255, 71, 87, 0.15);
    color: var(--balatro-red);
}

/* ===== CARD CAROUSEL ===== */
.card-carousel {
    height: 210px;
    background: rgba(26, 15, 46, 0.4);
    padding: 60px 0 25px 0;
    position: relative;
    overflow: visible;
}

.carousel-container {
    height: 100%;
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

/* Deck button that expands into carousel */
.deck-button {
    width: 120px;
    height: 160px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    z-index: 100;
}

.deck-button.expanded {
    opacity: 0;
    pointer-events: none;
}

.deck-button img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    image-rendering: crisp-edges;
    image-rendering: -moz-crisp-edges;
    image-rendering: pixelated;
    background: transparent;
}

.deck-button:hover {
    transform: translateY(-10px) scale(1.05);
}

/* Carousel cards */
.carousel-track {
    position: absolute;
    bottom: 15px;
    left: 0;
    transform: none;
    width: 100%;
    height: 210px;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 8px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    padding: 60px 20px 0;
    overflow-x: auto;
    overflow-y: visible;
}

.carousel-track.active {
    opacity: 1;
    pointer-events: all;
}

.carousel-card {
    min-width: 70px;
    height: 100px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transform-origin: center bottom;
}

.carousel-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: crisp-edges;
    image-rendering: -moz-crisp-edges;
    image-rendering: pixelated;
}

.carousel-card:hover {
    transform: translateY(-20px) scale(1.1);
    z-index: 200;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}

.carousel-card.selected {
    transform: translateY(-30px) scale(1.15);
    z-index: 300;
    box-shadow: 0 12px 30px rgba(108, 59, 168, 0.6);
}

/* Holographic foil effect for solved cards */
.carousel-card.solved {
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 18px rgba(120, 120, 255, 0.6);
    border: 1px solid rgba(160, 140, 255, 0.55);
    background: rgba(90, 70, 160, 0.18);
}

.carousel-card.solved::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(
            115deg,
            transparent 0%,
            rgba(160, 140, 255, 0.45) 10%,
            rgba(120, 80, 200, 0.45) 20%,
            rgba(0, 229, 255, 0.45) 30%,
            rgba(200, 150, 255, 0.45) 40%,
            transparent 50%
        ),
        repeating-linear-gradient(
            115deg,
            transparent 0%,
            rgba(0, 229, 255, 0.25) 12%,
            rgba(160, 140, 255, 0.25) 24%,
            transparent 36%
        ),
        radial-gradient(circle at 30% 30%, rgba(120, 120, 255, 0.25), transparent 55%);
    background-size: 240px 240px, 360px 360px, 100% 100%;
    background-repeat: repeat;
    animation: foilShine 7s ease-in-out infinite,
        foilShineAlt 11s ease-in-out infinite;
    pointer-events: none;
    mix-blend-mode: screen;
    z-index: 10;
}

.carousel-card.solved::after {
    box-shadow: 0 0 10px rgba(140, 120, 255, 0.6);
}
.carousel-card.solved::after {
    content: '✓';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    background: rgba(140, 120, 255, 0.95);
    color: var(--balatro-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
    z-index: 20;
}

@keyframes foilShine {
    0% { background-position: 0% 0%, 0% 0%, 0 0; }
    50% { background-position: 100% 50%, 60% 30%, 0 0; }
    100% { background-position: 0% 100%, 0% 60%, 0 0; }
}

@keyframes foilShineAlt {
    0% { background-position: 100% 0%, 40% 10%, 0 0; }
    50% { background-position: 0% 50%, 100% 50%, 0 0; }
    100% { background-position: 100% 100%, 40% 90%, 0 0; }
}

/* Card suit indicator */
.carousel-card .suit-indicator {
    position: absolute;
    bottom: 4px;
    left: 4px;
    font-size: 18px;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.8);
}

/* Credits */
.credits {
    position: fixed;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    color: var(--text-dim);
    text-align: center;
    z-index: 1000;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.credits:hover {
    opacity: 1;
}

.credits a {
    color: var(--balatro-cyan);
    text-decoration: none;
    transition: color 0.3s ease;
}

.credits a:hover {
    color: var(--balatro-gold);
}

/* Scrollbar styling */
.info-section::-webkit-scrollbar,
.carousel-track::-webkit-scrollbar {
    height: 8px;
    width: 8px;
}

.info-section::-webkit-scrollbar-track,
.carousel-track::-webkit-scrollbar-track {
    background: rgba(15, 8, 32, 0.5);
}

.info-section::-webkit-scrollbar-thumb,
.carousel-track::-webkit-scrollbar-thumb {
    background: var(--balatro-purple);
    border-radius: 4px;
}

.info-section::-webkit-scrollbar-thumb:hover,
.carousel-track::-webkit-scrollbar-thumb:hover {
    background: var(--balatro-pink);
}