/* CSS Variables */
:root {
    --primary-color: #4a90d9;
    --secondary-color: #357abd;
    --accent-color: #ff6b6b;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-color: #333;
    --light-color: #f8f9fa;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-600: #6c757d;
    --gray-800: #343a40;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px var(--primary-color); }
    50% { box-shadow: 0 0 20px var(--primary-color), 0 0 30px var(--primary-color); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-15px); }
    60% { transform: translateY(-7px); }
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

@keyframes confetti {
    0% { transform: translateY(0) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@keyframes scorePopup {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.5); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes wordAppear {
    0% { transform: scale(0) rotate(-180deg); opacity: 0; }
    100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

@keyframes correctFlash {
    0% { background-color: rgba(40, 167, 69, 0.3); }
    100% { background-color: transparent; }
}

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

.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-fadeIn { animation: fadeIn 0.5s ease forwards; }
.animate-slideIn { animation: slideIn 0.5s ease forwards; }
.animate-glow { animation: glow 2s ease-in-out infinite; }
.animate-bounce { animation: bounce 1s ease infinite; }
.animate-wordAppear { animation: wordAppear 0.5s ease forwards; }
.animate-correctFlash { animation: correctFlash 0.3s ease forwards; }
.animate-incorrectShake { animation: incorrectShake 0.5s ease forwards; }

/* Header */
header {
    background: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    animation: fadeIn 0.5s ease forwards;
}

header h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

#mainNav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

#mainNav button {
    padding: 10px 20px;
    border: none;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

#mainNav button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition);
}

#mainNav button:hover::before {
    left: 100%;
}

#mainNav button:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(74, 144, 217, 0.4);
}

.logout-btn {
    background: var(--danger-color) !important;
}

.logout-btn:hover {
    background: #c82333 !important;
}

/* Auth Section */
.auth-container {
    max-width: 400px;
    margin: 100px auto;
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease forwards;
}

.auth-form {
    animation: fadeIn 0.3s ease forwards;
}

.auth-form h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
    position: relative;
}

.auth-form h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.auth-form input {
    width: 100%;
    padding: 12px 15px;
    margin: 10px 0;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.auth-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(74, 144, 217, 0.2);
    transform: scale(1.02);
}

.auth-form button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
    position: relative;
    overflow: hidden;
}

.auth-form button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition);
}

.auth-form button:hover::before {
    left: 100%;
}

.auth-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.5);
}

.auth-form p {
    text-align: center;
    margin-top: 20px;
}

.auth-form a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.auth-form a:hover {
    text-decoration: underline;
    color: var(--secondary-color);
}

/* Home Section */
.home-content {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    animation: fadeIn 0.5s ease forwards;
}

.home-content h2 {
    color: var(--primary-color);
    margin-bottom: 30px;
    font-size: 2rem;
    animation: pulse 2s ease-in-out infinite;
}

.game-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.info-card {
    background: var(--gray-100);
    padding: 25px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
    animation: slideIn 0.5s ease forwards;
}

.info-card:nth-child(1) { animation-delay: 0.1s; }
.info-card:nth-child(2) { animation-delay: 0.2s; }
.info-card:nth-child(3) { animation-delay: 0.3s; }

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-left-color: #667eea;
}

.info-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.start-btn {
    padding: 15px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.3rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.start-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition);
}

.start-btn:hover::before {
    left: 100%;
}

.start-btn:hover {
    transform: scale(1.1) translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.5);
}

/* Game Section */
.game-container {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease forwards;
}

.game-header {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-radius: var(--border-radius);
}

.game-stat {
    text-align: center;
    padding: 10px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.game-stat:hover {
    transform: translateY(-3px);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 5px;
}

.game-stat span:not(.stat-label) {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    transition: var(--transition);
}

.game-stat:hover span:not(.stat-label) {
    color: #667eea;
    transform: scale(1.1);
}

#difficultySelect {
    padding: 8px 15px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

#difficultySelect:hover {
    border-color: #667eea;
    box-shadow: 0 0 10px rgba(74, 144, 217, 0.2);
}

.word-display {
    text-align: center;
    margin: 30px 0;
}

.current-word {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 20px;
    min-height: 60px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    animation: wordAppear 0.3s ease forwards;
    display: inline-block;
}

.word-input {
    width: 100%;
    max-width: 500px;
    padding: 15px 20px;
    font-size: 1.5rem;
    border: 3px solid var(--primary-color);
    border-radius: var(--border-radius);
    text-align: center;
    outline: none;
    transition: var(--transition);
}

.word-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

.word-input.correct {
    border-color: var(--success-color);
    background: rgba(40, 167, 69, 0.1);
    animation: correctFlash 0.3s ease forwards;
}

.word-input.incorrect {
    border-color: var(--danger-color);
    background: rgba(220, 53, 69, 0.1);
    animation: incorrectShake 0.5s ease forwards;
}

.game-progress {
    margin: 20px 0;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--gray-200);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 10px;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.game-controls {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 30px;
}

.game-controls button {
    padding: 12px 30px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.game-controls button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition);
}

.game-controls button:hover::before {
    left: 100%;
}

.game-controls button:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(74, 144, 217, 0.4);
}

/* Score Popup */
.score-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    font-weight: bold;
    color: var(--success-color);
    pointer-events: none;
    animation: scorePopup 0.8s ease forwards;
    z-index: 1000;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* Results Panel */
.results-panel {
    margin-top: 30px;
    padding: 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--border-radius);
    color: var(--white);
    animation: fadeIn 0.5s ease forwards;
    position: relative;
    overflow: hidden;
}

.results-panel::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.results-panel h3 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.8rem;
    position: relative;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
    position: relative;
}

.result-item {
    text-align: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.result-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
}

.result-label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 5px;
    opacity: 0.9;
}

.result-value {
    font-size: 1.8rem;
    font-weight: bold;
}

.results-panel button {
    padding: 12px 30px;
    margin: 5px;
    background: var(--white);
    color: #667eea;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.results-panel button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gray-100);
    z-index: -1;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.results-panel button:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.results-panel button:hover {
    transform: scale(1.05);
}

/* Leaderboard Section */
.leaderboard-container {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease forwards;
}

.leaderboard-container h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
}

.leaderboard-container h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #667eea);
    border-radius: 2px;
}

.leaderboard-filters {
    text-align: center;
    margin: 30px 0;
}

.leaderboard-filters select {
    padding: 10px 20px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.leaderboard-filters select:hover {
    border-color: #667eea;
    box-shadow: 0 0 10px rgba(74, 144, 217, 0.2);
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.leaderboard-table th,
.leaderboard-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.leaderboard-table th {
    background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
    color: var(--white);
    font-weight: 600;
    position: relative;
}

.leaderboard-table th:first-child {
    border-radius: var(--border-radius) 0 0 0;
}

.leaderboard-table th:last-child {
    border-radius: 0 var(--border-radius) 0 0;
}

.leaderboard-table tr {
    transition: var(--transition);
    animation: slideIn 0.3s ease forwards;
}

.leaderboard-table tr:nth-child(even) {
    background: var(--gray-100);
}

.leaderboard-table tr:hover {
    background: var(--gray-200);
    transform: scale(1.02);
}

.leaderboard-table tr.rank-1 {
    background: linear-gradient(90deg, rgba(255, 215, 0, 0.3), rgba(255, 215, 0, 0.1));
    border-left: 4px solid gold;
}

.leaderboard-table tr.rank-2 {
    background: linear-gradient(90deg, rgba(192, 192, 192, 0.3), rgba(192, 192, 192, 0.1));
    border-left: 4px solid silver;
}

.leaderboard-table tr.rank-3 {
    background: linear-gradient(90deg, rgba(205, 127, 50, 0.3), rgba(205, 127, 50, 0.1));
    border-left: 4px solid #cd7f32;
}

/* Profile Section */
.profile-container {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease forwards;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--gray-200);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2.5rem;
    font-weight: bold;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.profile-info h2 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.profile-info p {
    color: var(--gray-600);
}

.profile-stats {
    margin-bottom: 30px;
}

.profile-stats h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
}

.profile-stats h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

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

.stat-box {
    text-align: center;
    padding: 20px;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #667eea);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.stat-box:hover::before {
    transform: scaleX(1);
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    transition: var(--transition);
}

.stat-box:hover .stat-number {
    transform: scale(1.1);
    color: #667eea;
}

.stat-text {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-top: 5px;
}

.profile-performance {
    margin-bottom: 30px;
}

.profile-performance h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
}

.profile-performance h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.performance-bars {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.performance-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.performance-label {
    width: 80px;
    font-weight: 600;
    color: var(--gray-600);
}

.performance-bar-container {
    flex: 1;
    height: 25px;
    background: var(--gray-200);
    border-radius: 15px;
    overflow: hidden;
    position: relative;
}

.performance-bar-fill {
    height: 100%;
    border-radius: 15px;
    transition: width 0.5s ease;
    position: relative;
}

.performance-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 1.5s infinite;
}

.performance-value {
    width: 60px;
    text-align: right;
    font-weight: bold;
    color: var(--primary-color);
}

.profile-recent {
    margin-bottom: 30px;
}

.profile-recent h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
}

.profile-recent h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.recent-games-table {
    width: 100%;
    border-collapse: collapse;
}

.recent-games-table th,
.recent-games-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.recent-games-table th {
    background: var(--gray-100);
    font-weight: 600;
}

.recent-games-table tr:hover {
    background: var(--gray-100);
    transform: scale(1.02);
}

.profile-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.profile-actions button {
    padding: 12px 30px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.profile-actions button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition);
}

.profile-actions button:hover::before {
    left: 100%;
}

.profile-actions button:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(74, 144, 217, 0.4);
}

.danger-btn {
    background: var(--danger-color) !important;
}

.danger-btn:hover {
    background: #c82333 !important;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: var(--white);
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
    }

    #mainNav {
        justify-content: center;
    }

    .current-word {
        font-size: 2rem;
    }

    .game-header {
        grid-template-columns: repeat(2, 1fr);
    }

    .profile-header {
        flex-direction: column;
        text-align: center;
    }

    .leaderboard-table {
        font-size: 0.9rem;
    }

    .leaderboard-table th,
    .leaderboard-table td {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    header h1 {
        font-size: 1.4rem;
    }

    #mainNav button {
        padding: 8px 12px;
        font-size: 0.9rem;
    }

    .auth-container {
        padding: 20px;
        margin: 50px auto;
    }

    .game-info {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-grid {
        grid-template-columns: 1fr;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-200);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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

/* Confetti Container */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 1000;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confetti 3s linear forwards;
}