/* Reset et variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0f172a;
    --light-bg: #1e293b;
    --card-bg: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Particules d'arrière-plan */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.4);
    animation: float 20s infinite;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0) rotate(0deg) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
        transform: translateY(90vh) translateX(20px) rotate(45deg) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translateY(50vh) translateX(100px) rotate(180deg) scale(1.2);
    }
    90% {
        opacity: 0.5;
        transform: translateY(10vh) translateX(150px) rotate(315deg) scale(0.8);
    }
    100% {
        transform: translateY(-10vh) translateX(200px) rotate(360deg) scale(0);
        opacity: 0;
    }
}

/* Écran de démarrage */
.start-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.start-content {
    text-align: center;
    max-width: 900px;
    width: 100%;
    animation: slideInUp 0.8s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.game-title {
    font-size: clamp(2rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 5px;
}

.title-letter {
    display: inline-block;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: bounceRotate 3s ease-in-out infinite, colorShift 5s ease-in-out infinite;
    text-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.title-letter:nth-child(1) { animation-delay: 0s, 0s; }
.title-letter:nth-child(2) { animation-delay: 0.1s, 0.5s; }
.title-letter:nth-child(3) { animation-delay: 0.2s, 1s; }
.title-letter:nth-child(4) { animation-delay: 0.3s, 1.5s; }
.title-letter:nth-child(6) { animation-delay: 0.5s, 2s; }
.title-letter:nth-child(7) { animation-delay: 0.6s, 2.5s; }
.title-letter:nth-child(8) { animation-delay: 0.7s, 3s; }
.title-letter:nth-child(9) { animation-delay: 0.8s, 3.5s; }
.title-letter:nth-child(10) { animation-delay: 0.9s, 4s; }

@keyframes bounceRotate {
    0%, 100% { 
        transform: translateY(0) scale(1) rotate(0deg); 
    }
    25% { 
        transform: translateY(-15px) scale(1.1) rotate(-5deg); 
    }
    50% { 
        transform: translateY(-20px) scale(1.15) rotate(0deg); 
    }
    75% { 
        transform: translateY(-15px) scale(1.1) rotate(5deg); 
    }
}

@keyframes colorShift {
    0%, 100% {
        filter: hue-rotate(0deg) brightness(1);
    }
    50% {
        filter: hue-rotate(30deg) brightness(1.2);
    }
}

.subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 50px;
    animation: fadeInDelay 1s ease-out 0.3s backwards, pulse 2s ease-in-out infinite;
}

@keyframes fadeInDelay {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Sélection de niveau */
.level-selection {
    margin-bottom: 40px;
    animation: fadeInDelay 1s ease-out 0.5s backwards;
}

.level-selection h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 30px;
    color: var(--text-primary);
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        text-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(99, 102, 241, 0.8), 0 0 30px rgba(139, 92, 246, 0.5);
    }
}

.level-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.level-btn {
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 30px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
    animation: scaleIn 0.5s ease-out backwards;
    position: relative;
    overflow: hidden;
}

.level-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    border-radius: 50%;
}

.level-btn:hover::before {
    width: 300px;
    height: 300px;
}

.level-btn:nth-child(1) { animation-delay: 0.7s; }
.level-btn:nth-child(2) { animation-delay: 0.85s; }
.level-btn:nth-child(3) { animation-delay: 1s; }
.level-btn:nth-child(4) { animation-delay: 1.15s; }

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.5) rotate(-10deg);
    }
    to {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

.level-btn:hover {
    transform: translateY(-10px) scale(1.05);
    border-color: var(--primary-color);
    box-shadow: 0 15px 50px rgba(99, 102, 241, 0.5);
}

.level-icon {
    font-size: 3rem;
    animation: iconFloat 3s ease-in-out infinite;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.level-btn:hover .level-icon {
    transform: scale(1.2);
}

@keyframes iconFloat {
    0%, 100% { 
        transform: translateY(0px);
    }
    50% { 
        transform: translateY(-5px);
    }
}

.level-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.level-btn:hover .level-name {
    transform: scale(1.1);
}

.level-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.level-btn:hover .level-desc {
    color: var(--text-primary);
}

.leaderboard-btn {
    background: var(--gradient-1);
    border: none;
    border-radius: 50px;
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    animation: fadeInDelay 1s ease-out 1.3s backwards, breathe 3s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 15px 40px rgba(99, 102, 241, 0.5);
    }
}

.leaderboard-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transform: rotate(45deg);
    animation: shine 3s linear infinite;
}

@keyframes shine {
    0% {
        left: -200%;
    }
    100% {
        left: 200%;
    }
}

.leaderboard-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.6);
}

/* Écran de jeu */
.game-screen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hidden {
    display: none !important;
}

.game-header {
    background: var(--light-bg);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    flex-wrap: wrap;
    gap: 15px;
}

.header-left, .header-center, .header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.back-btn {
    background: var(--card-bg);
    border: none;
    border-radius: 10px;
    padding: 10px 20px;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: var(--primary-color);
    transform: translateX(-3px);
}

.level-badge {
    background: var(--gradient-1);
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 1rem;
}

.timer, .score {
    background: var(--card-bg);
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Container de jeu */
.game-container {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    padding: 30px;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.game-area {
    display: flex;
    justify-content: center;
    align-items: center;
}

.grid-container {
    display: inline-grid;
    gap: 2px;
    background: var(--light-bg);
    padding: 10px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.grid-cell {
    width: clamp(25px, 3vw, 45px);
    height: clamp(25px, 3vw, 45px);
    background: var(--card-bg);
    border: 2px solid var(--light-bg);
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: clamp(0.8rem, 1.5vw, 1.2rem);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.grid-cell:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

.grid-cell.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.grid-cell.found {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
    animation: pulse 0.5s ease;
}

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

/* Panneau des mots */
.words-panel {
    background: var(--light-bg);
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.words-panel h3 {
    font-size: 1.5rem;
    text-align: center;
    color: var(--text-primary);
}

.words-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
    overflow-y: auto;
    max-height: 500px;
}

.word-item {
    background: var(--card-bg);
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.word-item.found {
    background: var(--success-color);
    text-decoration: line-through;
    opacity: 0.7;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    0% { transform: translateX(-20px); opacity: 0; }
    100% { transform: translateX(0); opacity: 0.7; }
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-1);
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    text-align: center;
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Modales */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 20px;
}

.modal-content {
    background: var(--light-bg);
    padding: 40px;
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: modalSlideIn 0.4s ease;
}

@keyframes modalSlideIn {
    0% {
        opacity: 0;
        transform: translateY(-50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.victory-content h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.victory-message {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.victory-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.name-input-container {
    margin-bottom: 30px;
}

.name-input-container input {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--card-bg);
    border-radius: 10px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: border-color 0.3s ease;
}

.name-input-container input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.modal-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    flex: 1;
    min-width: 150px;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* Confetti */
.confetti {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    border-radius: 20px;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    top: -10px;
    opacity: 0;
    animation: confettiFall 3s ease-out forwards;
}

@keyframes confettiFall {
    0% {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }
    100% {
        opacity: 0;
        transform: translateY(600px) rotate(720deg);
    }
}

/* Classement */
.leaderboard-content h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 30px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.leaderboard-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 20px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.filter-btn:hover {
    border-color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.leaderboard-list {
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 20px;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--card-bg);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.leaderboard-item:hover {
    transform: translateX(5px);
    background: var(--primary-color);
}

.rank {
    font-size: 1.5rem;
    font-weight: 700;
    min-width: 40px;
    text-align: center;
}

.rank.gold { color: #ffd700; }
.rank.silver { color: #c0c0c0; }
.rank.bronze { color: #cd7f32; }

.player-info {
    flex: 1;
}

.player-name {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.player-level {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.player-stats {
    text-align: right;
}

.player-score {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.player-time {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.no-scores {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .game-container {
        grid-template-columns: 1fr;
    }

    .words-panel {
        max-width: 100%;
    }

    .words-list {
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .game-header {
        justify-content: center;
    }

    .header-left, .header-center, .header-right {
        flex: 1;
        justify-content: center;
    }

    .level-buttons {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .victory-stats {
        grid-template-columns: 1fr;
    }

    .modal-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .game-container {
        padding: 15px;
    }

    .grid-container {
        padding: 5px;
    }

    .words-panel {
        padding: 15px;
    }

    .modal-content {
        padding: 20px;
    }
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}