:root {
    --primary-color: #FFD93D;
    --secondary-color: #6BCB77;
    --accent-color: #4D96FF;
    --danger-color: #FF6B6B;
    --bg-dark: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --cell-unrevealed: rgba(255, 255, 255, 0.1);
    --cell-revealed: rgba(255, 255, 255, 0.02);
    --stat-bg: rgba(0, 0, 0, 0.2);
    --font-outfit: 'Outfit', 'Noto Sans KR', sans-serif;
}

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

.hidden {
    display: none !important;
}

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

/* Background Blobs for Atmosphere */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: move 20s infinite alternate;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-color);
    top: -100px;
    right: -100px;
}

.blob-2 {
    width: 350px;
    height: 350px;
    background: var(--accent-color);
    bottom: -50px;
    left: -50px;
}

.blob-3 {
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    top: 40%;
    left: 30%;
}

@keyframes move {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(50px, 100px);
    }
}

/* Background Pattern */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
    background-repeat: repeat;
}

.container {
    width: 100%;
    max-width: 1000px;
    padding: 3rem 1rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* 자식 요소들을 가로 중앙에 배치 */
    gap: 3rem;
    z-index: 1;
}

header {
    text-align: center;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.main-logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
    filter: drop-shadow(0 15px 30px rgba(255, 217, 61, 0.4));
    animation: duckWobble 4s infinite ease-in-out;
}

@keyframes duckWobble {

    0%,
    100% {
        transform: rotate(-5deg) translateY(0);
    }

    50% {
        transform: rotate(5deg) translateY(-10px);
    }
}

header h1 {
    font-size: 3.2rem;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.game-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    padding: 3rem;
    box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    width: fit-content;
    min-width: 420px;
    max-width: 95vw;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.25rem;
    background: var(--stat-bg);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.header-controls-left,
.header-controls-right {
    flex: 1;
}

.header-controls-center {
    flex: 0 0 auto;
    display: flex;
    gap: 12px;
    align-items: center;
}

.header-controls-right {
    display: flex;
    justify-content: flex-end;
}

.control-icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.control-icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.control-icon-btn.muted .icon {
    opacity: 0.5;
}

.stat-box {
    background: var(--stat-bg);
    padding: 0.8rem 1.5rem;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
    border: 1px solid var(--glass-border);
}

.stat-box .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.stat-box .value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-color);
    font-family: monospace;
}

/* Best Record Display */
.best-record {
    margin-bottom: 1rem;
    padding: 0.4rem 1rem;
    background: rgba(255, 217, 61, 0.1);
    border-radius: 100px;
    border: 1px solid rgba(255, 217, 61, 0.2);
    display: flex;
    gap: 10px;
    align-items: center;
}

.best-record .label {
    font-size: 0.65rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.best-record .value {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    font-family: monospace;
}

#reset-btn {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#reset-btn:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.1);
}

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

/* Board Styling */
.board {
    display: grid;
    gap: 4px;
    margin: 0 auto;
    user-select: none;
    background: rgba(0, 0, 0, 0.3);
    padding: 12px;
    border-radius: 20px;
    width: fit-content;
    max-width: 100%;
}

.cell {
    width: 100%;
    min-width: 15px;
    max-width: 60px;
    aspect-ratio: 1 / 1;
    background: var(--cell-unrevealed);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-size: clamp(0.7rem, 2.5vw, 1.3rem);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Mocking Text Animation */
.mocking-text {
    position: fixed;
    pointer-events: none;
    z-index: 2000;
    font-weight: 900;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
    font-size: 2.5rem;
    animation: mockFloat 2s ease-out forwards;
    white-space: nowrap;
}

@keyframes mockFloat {
    0% {
        transform: translateY(0) rotate(0deg) scale(0.5);
        opacity: 0;
    }

    20% {
        opacity: 1;
        transform: translateY(-30px) scale(1.2);
    }

    100% {
        transform: translateY(-300px) rotate(25deg) scale(1.5);
        opacity: 0;
    }
}

.cell:hover:not(.revealed) {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(0.98);
}

.cell.revealed {
    background: var(--cell-revealed);
    cursor: default;
}

.cell.duck {
    background: rgba(255, 107, 107, 0.4);
    animation: duckAppear 0.3s ease;
}

.cell.duck-clicked {
    background: var(--danger-color) !important;
    animation: duckBounce 0.4s ease;
}

@keyframes duckAppear {
    from {
        transform: scale(0);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes duckBounce {
    0% {
        transform: scale(0);
    }

    50% {
        transform: scale(1.3);
    }

    100% {
        transform: scale(1);
    }
}

.cell.flag {
    color: var(--primary-color);
}

.cell.n1 {
    color: #4D96FF;
}

.cell.n2 {
    color: #6BCB77;
}

.cell.n3 {
    color: #FF6B6B;
}

.cell.n4 {
    color: #9B59B6;
}

.cell.n5 {
    color: #E67E22;
}

.cell.n6 {
    color: #1ABC9C;
}

.cell.n7 {
    color: #34495E;
}

.cell.n8 {
    color: #7F8C8D;
}

/* Golden Duck Effect */
.cell.golden-duck {
    background: linear-gradient(135deg, #FFD700, #FFA500) !important;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.6);
    border: 2px solid #fff;
    animation: goldenSparkle 1.5s infinite alternate;
}

@keyframes goldenSparkle {
    from {
        box-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
        transform: scale(1);
    }

    to {
        box-shadow: 0 0 25px rgba(255, 215, 0, 0.9);
        transform: scale(1.05);
    }
}

/* Shake animation for chord */
.cell.shake {
    animation: cellShake 0.4s ease;
    background: rgba(255, 255, 255, 0.25) !important;
    box-shadow: 0 0 8px rgba(255, 217, 61, 0.3);
}

@keyframes cellShake {

    0%,
    100% {
        transform: translate(0, 0);
    }

    10% {
        transform: translate(-2px, -1px);
    }

    20% {
        transform: translate(2px, 1px);
    }

    30% {
        transform: translate(-1px, 2px);
    }

    40% {
        transform: translate(1px, -2px);
    }

    50% {
        transform: translate(-2px, 1px);
    }

    60% {
        transform: translate(2px, -1px);
    }

    70% {
        transform: translate(-1px, -2px);
    }

    80% {
        transform: translate(1px, 2px);
    }

    90% {
        transform: translate(-2px, -1px);
    }
}

/* Difficulty Selector */
.difficulty-selector {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 2rem;
}

.diff-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.diff-btn.active {
    background: var(--primary-color);
    color: var(--bg-dark);
    border-color: var(--primary-color);
    font-weight: 600;
}

.diff-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
}

/* Mobile Controls Styling */
.mobile-controls {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

.mobile-controls.hidden {
    display: none;
}

.control-modes {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.mode-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.mode-btn.active {
    background: var(--card-bg);
    color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.touch-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--accent-color);
    padding: 1rem 2rem;
    border-radius: 100px;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(77, 150, 255, 0.4);
    animation: pulse 2s infinite;
}

.touch-indicator.flag-mode {
    background: var(--danger-color);
    box-shadow: 0 10px 25px rgba(255, 107, 107, 0.4);
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.control-guide {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

/* Custom Settings */
.custom-settings {
    margin-top: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 1.5rem;
    border-radius: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    border: 1px solid var(--glass-border);
}

.custom-settings.hidden {
    display: none;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.input-group label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.input-group input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 0.5rem;
    border-radius: 8px;
    width: 70px;
    text-align: center;
}

.apply-btn {
    background: var(--accent-color);
    color: #fff;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    align-self: flex-end;
    transition: all 0.2s;
}

.apply-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    display: none;
    opacity: 0;
}

.modal-content {
    background: var(--bg-dark);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 32px;
    text-align: center;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

#modal-image-container {
    width: 100%;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

#modal-result-image {
    width: 200px;
    height: 200px;
    object-fit: contain;
    border-radius: 20px;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

.modal-content h2 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.modal-content p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.5;
    white-space: pre-line;
}

#modal-close-btn {
    background: linear-gradient(135deg, #FF8E3C, #FF6B6B);
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 16px;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s;
    box-shadow: 0 10px 20px rgba(255, 142, 60, 0.2);
}

#modal-close-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(255, 142, 60, 0.4);
    filter: brightness(1.1);
}

/* Luck Grade Display */
#luck-grade-container {
    margin-bottom: 2rem;
}

.grade-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.grade-badge {
    font-size: 3rem;
    font-weight: 900;
    font-family: 'Outfit';
    background: linear-gradient(135deg, #FFD93D, #FF8E3C);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 5px 15px rgba(255, 142, 60, 0.4));
}

.modal-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.modal-buttons-row {
    display: flex;
    gap: 10px;
    width: 100%;
}

.modal-buttons-row button {
    flex: 1;
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    padding: 1rem;
    border-radius: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.kakao-btn {
    background: #FEE500;
    color: #191919;
    border: none;
    padding: 1rem;
    border-radius: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.kakao-btn:hover {
    background: #FADA0A;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(254, 229, 0, 0.3);
}

/* Nickname & Leaderboard */
.nickname-container {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--glass-border);
}

.nickname-guide {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.nickname-input-group {
    display: flex;
    gap: 8px;
}

#player-nickname {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    font-family: var(--font-outfit);
    font-weight: 600;
}

.submit-rank-btn {
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 0 1.25rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.leaderboard-btn {
    background: rgba(255, 217, 61, 0.1) !important;
    color: var(--primary-color) !important;
    border: 1px solid rgba(255, 217, 61, 0.3) !important;
}

.leaderboard-content h2 {
    margin-bottom: 0.25rem;
}

.leaderboard-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.modal-close-icon {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
}

.leaderboard-tabs {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: 12px;
    margin: 1.5rem 0;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.6rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn.active {
    background: var(--accent-color);
    color: #fff;
}

.rank-list-container {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    overflow: hidden;
}

.rank-header,
.rank-item {
    display: grid;
    grid-template-columns: 50px 1fr 80px 60px;
    padding: 1rem;
    align-items: center;
    text-align: center;
}

.rank-header {
    background: rgba(255, 255, 255, 0.05);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.rank-list {
    max-height: 350px;
    overflow-y: auto;
}

.rank-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.95rem;
}

.rank-item:nth-child(1) {
    color: var(--primary-color);
    font-weight: 700;
}

.rank-item:nth-child(2) {
    color: #e2e8f0;
}

.rank-item:nth-child(3) {
    color: #cbd5e1;
}

.rank-item .nickname {
    text-align: left;
    padding-left: 10px;
}

.rank-item .grade {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 800;
}

.loading-ranks {
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.firework {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1000;
    animation: fireworkExplode 1.5s ease-out forwards;
}

@keyframes fireworkExplode {
    0% {
        transform: scale(1) translateY(0);
        opacity: 1;
    }

    100% {
        transform: scale(0) translateY(100px);
        opacity: 0;
    }
}

.confetti {
    position: fixed;
    z-index: 1001;
    pointer-events: none;
}

footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .game-card {
        padding: 1rem;
    }
}