@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700&display=swap');

:root {
    /* 과일 테마 (기본) */
    --primary-color: #4CAF50;
    --primary-dark: #388E3C;
    --bg-color: #F1F8E9;
    --card-bg: #FFFFFF;
    --card-back: #8BC34A;
    --card-back-gradient: linear-gradient(135deg, #aed581 0%, #8bc34a 100%);
    --card-border: #7cb342;
    --text-color: #333333;
}

body[data-theme="flower"] {
    /* 꽃 테마 */
    --primary-color: #E91E63;
    --primary-dark: #C2185B;
    --bg-color: #FDF2F4;
    --card-bg: #FFFFFF;
    --card-back: #F48FB1;
    --card-back-gradient: linear-gradient(135deg, #f8bbd0 0%, #f48fb1 100%);
    --card-border: #ec407a;
    --text-color: #333333;
}

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

body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    touch-action: manipulation; /* 시니어 터치 오작동 방지 */
    transition: background-color 0.5s ease, color 0.5s ease;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 20px;
    text-align: center;
}

header {
    margin-bottom: 30px;
}

h1 {
    font-size: 2.8rem; /* 큰 폰트 */
    color: var(--primary-dark);
    margin-bottom: 10px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
    transition: color 0.5s ease;
}

.stats {
    font-size: 1.8rem;
    font-weight: bold;
    background-color: #fff;
    padding: 10px 20px;
    border-radius: 20px;
    display: inline-block;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

/* Game Board */
.game-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

/* Card */
.card {
    aspect-ratio: 1;
    perspective: 1000px;
    cursor: pointer;
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
    transform-style: preserve-3d;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    border-radius: 16px;
}

.card.flipped .card-inner,
.card.matched .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    width: 100%;
    height: 100%;
    position: absolute;
    backface-visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 16px;
    border: 3px solid #E0E0E0;
}

.card-front {
    background-color: var(--card-back);
    background-image: var(--card-back-gradient);
    border-color: var(--card-border);
    transition: background-color 0.5s ease, border-color 0.5s ease, background-image 0.5s ease;
}

/* 물음표 아이콘 대신 예쁜 패턴이나 기호를 추가할 수 있음 */
.card-front::after {
    content: '?';
    font-size: 3.5rem;
    color: white;
    font-weight: bold;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}

.card-back {
    background-color: var(--card-bg);
    transform: rotateY(180deg);
    font-size: 3.5rem; /* 이모지 크기 최대화 */
}

.card.matched .card-inner {
    animation: pulse 0.5s ease-in-out;
}

@keyframes pulse {
    0% { transform: rotateY(180deg) scale(1); }
    50% { transform: rotateY(180deg) scale(1.1); }
    100% { transform: rotateY(180deg) scale(1); }
}

/* Buttons */
.btn {
    background-color: #E0E0E0;
    color: #333;
    border: none;
    padding: 18px 40px;
    font-size: 1.6rem;
    font-weight: bold;
    border-radius: 40px;
    cursor: pointer;
    box-shadow: 0 6px 10px rgba(0,0,0,0.15);
    transition: all 0.2s;
    font-family: inherit;
}

.btn:hover, .btn:active {
    background-color: #D6D6D6;
    transform: translateY(2px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}

.primary-btn:hover, .primary-btn:active {
    background-color: var(--primary-dark);
}

/* Modal */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background-color: white;
    padding: 50px 30px;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    max-width: 90%;
    width: 450px;
    transform: scale(1);
    transition: transform 0.3s ease;
}

.modal.hidden .modal-content {
    transform: scale(0.8);
}

.modal h2 {
    font-size: 3rem;
    color: var(--primary-dark);
    margin-bottom: 25px;
}

.modal p {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.modal .btn {
    margin-top: 30px;
    width: 100%;
}

/* Responsive adjustments for smaller screens */
@media (max-width: 480px) {
    .game-board {
        grid-template-columns: repeat(3, 1fr); /* 모바일에서는 3x4로 변경하여 크기 확보 */
        gap: 12px;
    }
    .card-front::after, .card-back {
        font-size: 3rem;
    }
    h1 {
        font-size: 2.2rem;
    }
}

/* Game Selector Tabs */
.game-selector {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0 25px 0;
}

.selector-btn {
    background-color: #FFFFFF;
    color: #555555;
    border: 3px solid #E0E0E0;
    padding: 14px 28px;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 30px;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
}

.selector-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.selector-btn.active {
    background-color: var(--primary-color);
    color: #FFFFFF;
    border-color: var(--primary-color);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}