/* Reset and base styles */
:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --accent-color: #9c27b0;
    --accent-hover: #7b1fa2;
    --border-color: #333;
    --marked-color: #4a148c;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.header-left {
    text-align: left;
    flex: 1;
}

.user-panel {
    display: none;
    align-items: center;
    gap: 10px;
    position: fixed;
    top: 20px;
    right: 20px;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 20px;
    transition: background-color 0.2s;
    z-index: 100;
}

.user-panel:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 16px;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    min-width: 150px;
    overflow: hidden;
}

.dropdown-menu a {
    display: block;
    padding: 8px 16px;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s;
}

.dropdown-menu a:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.user-panel:hover .dropdown-menu {
    display: block;
}

.title {
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.bingo-logo {
    position: fixed;
    top: 20px;
    left: 20px;
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    z-index: 100;
}

.top10-sidebar {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 280px;
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    z-index: 50;
}

.top10-sidebar h3 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
    color: var(--accent-color);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.top10-sidebar .score-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.3rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
}

.top10-sidebar .score-row:last-child {
    border-bottom: none;
}

.top10-sidebar .score-username {
    color: #fff;
    font-weight: 500;
}

.top10-sidebar .score-points {
    color: var(--accent-color);
    font-weight: bold;
}

.subtitle {
    font-size: 1rem;
    color: #aaa;
    margin-bottom: 0.5rem;
}

.timer {
    position: fixed;
    bottom: 20px;
    left: 20px;
    font-size: 0.85rem;
    color: #888;
    z-index: 100;
}

/* Bingo grid */
.bingo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin: 1rem 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.bingo-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.8rem;
    user-select: none;
    overflow: hidden;
    word-break: break-word;
}

.bingo-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(156, 39, 176, 0.2);
}

.bingo-card.marked {
    background-color: var(--marked-color);
    color: #fff;
    text-decoration: line-through;
    opacity: 0.8;
}

/* Score display */
.score-display {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.score-item {
    text-align: center;
}

.score-item span:first-child {
    display: block;
    font-size: 0.85rem;
    color: #aaa;
    margin-bottom: 0.25rem;
}

.score-item span:last-child {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #888;
}

.close-modal:hover {
    color: var(--text-color);
}

#topScoresList {
    margin-top: 1rem;
}

.score-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.score-row:last-child {
    border-bottom: none;
}

.score-username {
    font-weight: 600;
}

.score-points {
    color: var(--accent-color);
    font-weight: bold;
}

/* Buttons */
.controls {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-secondary:hover {
    background-color: rgba(156, 39, 176, 0.1);
}

/* Footer */
.footer {
    text-align: center;
    margin-top: auto;
    padding: 1rem 0 0.5rem;
    border-top: 1px solid var(--border-color);
    color: #666;
    font-size: 0.75rem;
    line-height: 1.3;
}

/* Responsive design */
@media (max-width: 768px) {
    .bingo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .bingo-grid {
        grid-template-columns: 1fr;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* Auth pages */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
}

.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.auth-box {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.auth-box h1 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: #aaa;
    margin-bottom: 1.5rem;
}

.auth-form {
    margin-top: 1.5rem;
}

.form-group {
    margin-bottom: 1.2rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #ccc;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: #2a2a2a;
    color: var(--text-color);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(156, 39, 176, 0.2);
}

.auth-switch {
    margin-top: 1.5rem;
    color: #888;
}

.auth-switch a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* Animation for marked cards */
@keyframes pop {
    0% { transform: scale(1); }
    50% { transform: scale(0.95); }
    100% { transform: scale(1); }
}

.bingo-card.marked {
    animation: pop 0.3s ease;
}

/* Checkbox styles */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.2rem !important;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin: 0;
    padding: 0;
    accent-color: var(--accent-color);
}

.checkbox-group label {
    margin: 0;
    color: #ccc;
    font-weight: normal;
    cursor: pointer;
}