/* Authentication UI Styles */

.auth-button {
    padding: 10px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.auth-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

.user-name {
    color: white;
    font-weight: 600;
    font-size: 14px;
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-btn {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 12px;
    padding: 4px 8px;
    transition: transform 0.2s;
}

.user-menu-btn:hover {
    transform: scale(1.1);
}

.user-dropdown {
    position: absolute;
    top: 50px;
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    min-width: 180px;
    z-index: 1000;
    overflow: hidden;
}

.user-dropdown.hidden {
    display: none;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 12px 16px;
    text-align: left;
    background: none;
    border: none;
    color: #333;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 14px;
}

.dropdown-item:hover {
    background: #f5f5f5;
}

.logout-btn {
    color: #d32f2f;
    font-weight: 600;
}

/* Modal Styles */
.modal {
    display: flex;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s;
}

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

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    transition: color 0.2s;
}

.close-modal:hover {
    color: #333;
}

.auth-modal-content h2 {
    color: #1a472a;
    margin-bottom: 10px;
    text-align: center;
}

.auth-modal-content p {
    text-align: center;
    color: #666;
    margin-bottom: 25px;
}

.auth-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.oauth-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 20px;
    border: 2px solid #ddd;
    border-radius: 8px;
    background: white;
    color: #333;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
}

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

.google-button:hover {
    background: #f8f9fa;
    border-color: #4285F4;
}

.github-button {
    background: #24292e;
    color: white;
    border-color: #24292e;
}

.github-button:hover {
    background: #1a1e22;
}

.auth-note {
    margin-top: 20px;
    font-size: 12px;
    color: #999;
    text-align: center;
}

/* Stats Modal */
.stats-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

.stat-item {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    color: white;
}

.stat-label {
    display: block;
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 5px;
}

.stat-value {
    display: block;
    font-size: 28px;
    font-weight: bold;
}

.stats-list {
    max-height: 300px;
    overflow-y: auto;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    border-bottom: 1px solid #eee;
    align-items: center;
}

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

.score-value {
    font-weight: bold;
    color: #1a472a;
    font-size: 16px;
}

/* Responsive */
@media (max-width: 768px) {
    .modal-content {
        padding: 20px;
        width: 95%;
    }

    .user-name {
        display: none;
    }

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