/* Enhanced Authentication System Styles */

/* Login Overlay */
#login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    animation: fadeIn 0.3s ease-out forwards;
}

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

/* Login Container */
.login-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 400px;
    width: 90%;
    margin: 0 auto;
    transform: translateY(20px);
    animation: slideUp 0.3s ease-out 0.1s forwards;
}

@keyframes slideUp {
    to {
        transform: translateY(0);
    }
}

/* Login Form */
.login-form {
    text-align: center;
}

.login-header {
    margin-bottom: 2rem;
}

.login-header h2 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.login-header p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.version-info {
    display: inline-block;
    background: #f0f0f0;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    color: #666;
    font-family: 'Courier New', monospace;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.form-group input:invalid {
    border-color: #ff6b6b;
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 1rem;
}

.login-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.login-btn:active {
    transform: translateY(0);
}

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-spinner {
    display: inline-block;
    animation: spin 1s linear infinite;
}

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

/* Messages */
.error-message {
    color: #ff6b6b;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 8px;
    border-left: 3px solid #ff6b6b;
    text-align: left;
    display: none;
}

.error-message:not(:empty) {
    display: block;
    animation: slideDown 0.3s ease-out;
}

.info-message {
    color: #4dabf7;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: rgba(77, 171, 247, 0.1);
    border-radius: 8px;
    border-left: 3px solid #4dabf7;
    text-align: left;
    display: none;
}

.info-message:not(:empty) {
    display: block;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Login Footer */
.login-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
}

.login-footer small {
    color: #888;
    font-size: 0.8rem;
}

/* Enhanced Logout Button */
.logout-button.enhanced {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
    transition: all 0.3s ease;
    min-width: 120px;
    opacity: 0;
    animation: fadeInScale 0.5s ease-out 0.5s forwards;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.logout-button.enhanced:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.logout-content {
    padding: 0;
}

.logout-main {
    padding: 0.75rem 1rem 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.logout-main:hover {
    background: rgba(255, 255, 255, 0.1);
}

.session-info {
    padding: 0.25rem 1rem 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 0 0 12px 12px;
}

.session-info small {
    font-size: 0.7rem;
    opacity: 0.9;
    display: block;
}

/* Legacy Logout Button (fallback) */
.logout-button:not(.enhanced) {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.logout-button:not(.enhanced):hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-container {
        padding: 2rem 1.5rem;
        margin: 1rem;
        border-radius: 15px;
    }
    
    .login-header h2 {
        font-size: 1.3rem;
    }
    
    .form-group input {
        padding: 0.75rem;
        font-size: 0.95rem;
    }
    
    .login-btn {
        padding: 0.875rem;
        font-size: 0.95rem;
    }
    
    .logout-button.enhanced {
        top: 10px;
        right: 10px;
        min-width: 100px;
        font-size: 0.8rem;
    }
    
    .logout-main {
        padding: 0.6rem 0.8rem 0.4rem;
    }
    
    .session-info {
        padding: 0.2rem 0.8rem 0.4rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    #login-overlay {
        background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    }
    
    .login-container {
        background: rgba(30, 30, 30, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .login-header h2 {
        color: #fff;
    }
    
    .login-header p {
        color: #ccc;
    }
    
    .version-info {
        background: #444;
        color: #ccc;
    }
    
    .form-group label {
        color: #ddd;
    }
    
    .form-group input {
        background: #333;
        border-color: #555;
        color: #fff;
    }
    
    .form-group input:focus {
        border-color: #3498db;
        box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    }
    
    .login-footer {
        border-top-color: #555;
    }
    
    .login-footer small {
        color: #aaa;
    }
}

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    #login-overlay,
    .login-container,
    .logout-button.enhanced {
        animation: none;
    }
    
    .form-group input:focus {
        transform: none;
    }
    
    .login-btn:hover:not(:disabled) {
        transform: none;
    }
    
    .logout-button.enhanced:hover {
        transform: none;
    }
}

/* Focus indicators for accessibility */
.login-btn:focus,
.logout-main:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .login-container {
        background: #fff;
        border: 2px solid #000;
    }
    
    .form-group input {
        border: 2px solid #000;
    }
    
    .login-btn {
        background: #000;
        border: 2px solid #000;
    }
}

/* Content Protection */
#main-content {
    display: none; /* Hidden by default until authenticated */
}