/* Auth Styles */
* {
    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;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem 1rem;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="white" opacity="0.1"/><circle cx="80" cy="40" r="1" fill="white" opacity="0.1"/><circle cx="40" cy="80" r="1.5" fill="white" opacity="0.1"/></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.auth-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 450px;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin: auto;
}

.auth-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: 24px;
    z-index: -1;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    margin-bottom: 2rem;
}

.logo i {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.logo span, .logo h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #004AAD;
    margin: 0;
}

.auth-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: #666;
    font-size: 1rem;
    line-height: 1.5;
}

.auth-tabs {
    display: flex;
    background: #f8f9fa;
    border-radius: 12px;
    padding: 0.25rem;
    margin-bottom: 2rem;
    position: relative;
}

.auth-tab {
    flex: 1;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    border-radius: 10px;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.auth-tab.active {
    background: white;
    color: #667eea;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    font-weight: 600;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
    font-size: 0.95rem;
}

.form-group input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
    color: #333;
}

.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::placeholder {
    color: #adb5bd;
}

.btn-submit {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

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

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

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

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

.password-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.password-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.password-link:hover {
    color: #764ba2;
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.2);
    transform: translateY(-1px);
}

.password-link i {
    font-size: 0.9rem;
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.auth-footer a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.divider {
    position: relative;
    margin: 2rem 0;
    text-align: center;
    color: #adb5bd;
    font-size: 0.9rem;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e9ecef;
}

.divider span {
    background: rgba(255, 255, 255, 0.95);
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}

.social-login {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-social {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    background: white;
    color: #666;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-social:hover {
    border-color: #667eea;
    color: #667eea;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.alert {
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left-color: #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left-color: #dc3545;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left-color: #17a2b8;
}

/* Password strength indicator */
.password-strength {
    margin-top: 0.5rem;
    display: flex;
    gap: 0.25rem;
}

.strength-bar {
    height: 3px;
    flex: 1;
    background: #e9ecef;
    border-radius: 2px;
    transition: background 0.3s ease;
}

.strength-bar.active {
    background: #28a745;
}

.strength-bar.medium {
    background: #ffc107;
}

.strength-bar.weak {
    background: #dc3545;
}

/* Loading state */
.btn-submit.loading {
    pointer-events: none;
}

.btn-submit.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) and (min-width: 481px) {
    body {
        padding: 1.5rem 1rem;
    }
    
    .auth-container {
        max-width: 400px;
        padding: 2.5rem 2rem;
    }
    
    .logo {
        margin-bottom: 1.75rem;
    }
    
    .auth-header {
        margin-bottom: 1.25rem;
    }
    
    .form-group {
        margin-bottom: 1.125rem;
    }
    
    .btn-submit {
        margin-bottom: 1.25rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 1rem 0.5rem;
    }
    
    .auth-container {
        padding: 2rem 1.5rem;
        margin: 0.5rem;
        border-radius: 20px;
    }
    
    .logo {
        margin-bottom: 1.5rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .logo span, .logo h2 {
        font-size: 1.5rem;
    }
    
    .auth-header {
        margin-bottom: 1rem;
    }
    
    .auth-header h1 {
        font-size: 1.5rem;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
    
    .form-group input {
        padding: 0.875rem 1rem;
    }
    
    .btn-submit {
        padding: 0.875rem 1.25rem;
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .social-login {
        flex-direction: column;
    }
    
    .auth-footer {
        margin-top: 1rem;
    }
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
    .auth-container {
        background: rgba(30, 30, 30, 0.95);
        color: white;
    }
    
    .auth-header h1 {
        color: white;
    }
    
    .auth-header p {
        color: #ccc;
    }
    
    .form-group label {
        color: white;
    }
    
    .form-group input {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: white;
    }
    
    .form-group input::placeholder {
        color: rgba(255, 255, 255, 0.5);
    }
}