:root {
    --auth-primary: #f53939;
    --auth-primary-hover: #e02d2d;
    --auth-secondary: #fb912f;
    --auth-accent: #f86934;
    --auth-success: #10b981;
    --auth-error: #ef4444;
    --auth-bg: #f8fafc;
    --auth-card-bg: #ffffff;
    --auth-text: #1e293b;
    --auth-text-secondary: #64748b;
    --auth-text-tertiary: #94a3b8;
    --auth-border: #e2e8f0;
    --auth-border-focus: #cbd5e1;
    --auth-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --auth-shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --auth-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.auth-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 40px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.auth-card {
    background: var(--auth-card-bg);
    border-radius: 24px;
    padding: 48px;
    box-shadow: var(--auth-shadow-lg);
    border: 1px solid var(--auth-border);
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--auth-primary), var(--auth-secondary), var(--auth-accent));
}

.auth-header {
    text-align: center;
    margin-bottom: 40px;
}

.auth-logo {
    margin-bottom: 24px;
}

.auth-logo img {
    height: 50px;
    width: auto;
}

.auth-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--auth-text);
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--auth-primary), var(--auth-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.auth-subtitle {
    font-size: 1.1rem;
    color: var(--auth-text-secondary);
    line-height: 1.6;
}

.auth-form {
    margin-bottom: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 0;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--auth-text);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group label i {
    color: var(--auth-primary);
    font-size: 0.9rem;
}

.required {
    color: var(--auth-error);
    font-weight: 700;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--auth-border);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--auth-text);
    background: var(--auth-bg);
    transition: var(--auth-transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--auth-primary);
    background: var(--auth-card-bg);
    box-shadow: 0 0 0 4px rgba(245, 57, 57, 0.1);
}

.form-control::placeholder {
    color: var(--auth-text-tertiary);
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper .form-control {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--auth-text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--auth-transition);
}

.toggle-password:hover {
    color: var(--auth-primary);
    background: var(--auth-bg);
}

.form-hint {
    display: block;
    font-size: 0.85rem;
    color: var(--auth-text-tertiary);
    margin-top: 6px;
}

.form-error {
    display: block;
    font-size: 0.85rem;
    color: var(--auth-error);
    margin-top: 6px;
    font-weight: 500;
}

.password-strength {
    margin-top: 12px;
}

.strength-bar {
    height: 6px;
    background: var(--auth-border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.strength-bar-fill {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 3px;
}

.strength-bar-fill.weak {
    width: 33%;
    background: var(--auth-error);
}

.strength-bar-fill.medium {
    width: 66%;
    background: var(--auth-secondary);
}

.strength-bar-fill.strong {
    width: 100%;
    background: var(--auth-success);
}

.strength-text {
    font-size: 0.85rem;
    font-weight: 600;
}

.strength-text.weak {
    color: var(--auth-error);
}

.strength-text.medium {
    color: var(--auth-secondary);
}

.strength-text.strong {
    color: var(--auth-success);
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--auth-text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--auth-primary);
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
}

.checkbox-group {
    margin-top: 24px;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.checkbox-group .checkbox-label {
    font-size: 0.9rem;
    line-height: 1.6;
    display: flex !important;
    visibility: visible !important;
}

.checkbox-group .checkbox-label a {
    color: var(--auth-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--auth-transition);
}

.checkbox-group .checkbox-label a:hover {
    color: var(--auth-primary-hover);
    text-decoration: underline;
}

.forgot-password {
    color: var(--auth-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--auth-transition);
}

.forgot-password:hover {
    color: var(--auth-primary-hover);
    text-decoration: underline;
}

.auth-submit-btn {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--auth-primary), var(--auth-secondary));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--auth-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(245, 57, 57, 0.3);
}

.auth-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(245, 57, 57, 0.4);
}

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

.auth-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.auth-divider {
    text-align: center;
    position: relative;
    margin: 32px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background: var(--auth-border);
}

.auth-divider::before {
    left: 0;
}

.auth-divider::after {
    right: 0;
}

.auth-divider span {
    background: var(--auth-card-bg);
    padding: 0 16px;
    color: var(--auth-text-tertiary);
    font-size: 0.95rem;
    font-weight: 600;
}

.auth-alternative {
    text-align: center;
    margin-bottom: 24px;
}

.auth-alternative p {
    color: var(--auth-text-secondary);
    font-size: 1rem;
}

.auth-link {
    color: var(--auth-primary);
    text-decoration: none;
    font-weight: 700;
    transition: var(--auth-transition);
}

.auth-link:hover {
    color: var(--auth-primary-hover);
    text-decoration: underline;
}

.auth-footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--auth-border);
}

.auth-footer p {
    font-size: 0.85rem;
    color: var(--auth-text-tertiary);
    line-height: 1.6;
}

.auth-footer a {
    color: var(--auth-primary);
    text-decoration: none;
    transition: var(--auth-transition);
}

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

.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
}

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

.alert i {
    font-size: 1.2rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--auth-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--auth-error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-warning {
    background: rgba(251, 146, 60, 0.1);
    color: #f97316;
    border: 1px solid rgba(251, 146, 60, 0.3);
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
}

.alert-warning > div {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.resend-verification-btn {
    background: linear-gradient(135deg, var(--auth-primary), var(--auth-secondary));
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--auth-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.resend-verification-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 57, 57, 0.3);
}

.resend-verification-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.social-login-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
}

.social-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 12px;
    border: 2px solid var(--auth-border);
    background: var(--auth-card-bg);
    color: var(--auth-text);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--auth-transition);
    cursor: pointer;
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--auth-shadow);
    text-decoration: none;
    color: var(--auth-text);
}

.social-btn svg {
    flex-shrink: 0;
}

.social-btn-google:hover {
    border-color: #4285F4;
    background: rgba(66, 133, 244, 0.04);
}

.social-btn-github {
    color: var(--auth-text);
}

.social-btn-github:hover {
    border-color: #333;
    background: rgba(51, 51, 51, 0.04);
    color: var(--auth-text);
}

.social-btn-microsoft:hover {
    border-color: #00A4EF;
    background: rgba(0, 164, 239, 0.04);
}

.social-btn-facebook:hover {
    border-color: #1877F2;
    background: rgba(24, 119, 242, 0.04);
}

.social-btn-apple:hover {
    border-color: #000;
    background: rgba(0, 0, 0, 0.04);
}

.auth-features {
    background: linear-gradient(135deg, var(--auth-primary), var(--auth-secondary));
    border-radius: 24px;
    padding: 48px;
    color: white;
    position: sticky;
    top: 100px;
}

.auth-features h3 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 32px;
    color: white;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: start;
    background: rgba(255, 255, 255, 0.1);
    padding: 24px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    transition: var(--auth-transition);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(8px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.feature-content h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: white;
}

.feature-content p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
}

@media (max-width: 1200px) {
    .auth-container {
        gap: 40px;
    }
    
    .auth-card {
        padding: 40px;
    }
    
    .auth-features {
        padding: 40px;
    }
}

@media (max-width: 992px) {
    .auth-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .auth-features {
        position: static;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (max-width: 768px) {
    .auth-page {
        padding: 20px 16px;
    }
    
    .auth-card {
        padding: 32px 24px;
        border-radius: 20px;
    }
    
    .auth-title {
        font-size: 2rem;
    }
    
    .auth-subtitle {
        font-size: 1rem;
    }
    
    .auth-features {
        padding: 32px 24px;
    }
    
    .auth-features h3 {
        font-size: 1.6rem;
    }
    
    .feature-item {
        padding: 20px;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .social-login-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: 24px 20px;
    }
    
    .auth-title {
        font-size: 1.75rem;
    }
    
    .auth-features {
        padding: 24px 20px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .feature-icon {
        width: 48px;
        height: 48px;
        min-width: 48px;
    }
}