/**
 * Authentication Page Styles
 */

/* Auth Container */
.auth-container {
    max-width: 480px;
    margin: 60px auto;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

/* Auth Tabs */
.auth-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--gray-100);
}

.auth-tab {
    padding: 18px;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-light);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.auth-tab:hover {
    color: var(--text-dark);
}

.auth-tab.active {
    background: white;
    color: var(--primary-color);
}

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
}

/* Auth Form */
.auth-form {
    padding: 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 35px;
}

.auth-header h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-light);
    font-size: 15px;
}

/* Form Elements */
.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group label svg {
    color: var(--primary-color);
    flex-shrink: 0;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 15px;
    transition: all var(--transition-base);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(230, 90, 75, 0.1);
}

.form-group input::placeholder {
    color: var(--text-light);
}

/* Password Input */
.password-input {
    position: relative;
}

.password-input input {
    padding-right: 50px;
}

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

.btn-toggle-password:hover {
    color: var(--primary-color);
}

/* Password Strength */
.password-strength {
    margin-top: 8px;
    height: 4px;
    background: var(--gray-200);
    border-radius: 2px;
    overflow: hidden;
    display: none;
}

.password-strength.show {
    display: block;
}

.password-strength::after {
    content: '';
    display: block;
    height: 100%;
    background: var(--gray-300);
    transition: all var(--transition-base);
}

.password-strength.weak::after {
    width: 33%;
    background: var(--danger-color);
}

.password-strength.medium::after {
    width: 66%;
    background: var(--warning-color);
}

.password-strength.strong::after {
    width: 100%;
    background: var(--success-color);
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-color);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.link-forgot {
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-base);
}

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

/* Form Agreements */
.form-agreements {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    margin-bottom: 25px;
}

.form-agreements .checkbox-label {
    font-size: 13px;
    line-height: 1.6;
}

.form-agreements a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: underline;
}

/* Submit Button */
.btn-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-submit:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-submit.loading {
    pointer-events: none;
    position: relative;
}

.btn-submit.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Social Divider */
.social-divider {
    position: relative;
    text-align: center;
    margin: 30px 0;
}

.social-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.social-divider span {
    position: relative;
    display: inline-block;
    padding: 0 15px;
    background: white;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 600;
}

/* Social Login */
.social-login {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-social:hover {
    border-color: var(--gray-400);
    box-shadow: var(--shadow-sm);
}

.btn-google {
    color: #333;
}

.btn-google:hover {
    background: #f8f9fa;
}

.btn-facebook {
    color: #1877f2;
}

.btn-facebook:hover {
    background: #e7f3ff;
    border-color: #1877f2;
}

/* Auth Features */
.auth-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 60px auto;
    padding: 0 20px;
}

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

.feature-item svg {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.feature-item p {
    color: var(--text-light);
    font-size: 14px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-2xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
}

.btn-close {
    width: 36px;
    height: 36px;
    background: var(--gray-100);
    border: none;
    border-radius: 50%;
    font-size: 20px;
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-close:hover {
    background: var(--gray-200);
    color: var(--text-dark);
}

.modal-body {
    padding: 30px;
}

.modal-body p {
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.6;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.btn-secondary {
    padding: 12px 24px;
    background: var(--gray-100);
    color: var(--text-color);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-primary {
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

/* Error/Success Messages */
.form-message {
    padding: 14px 16px;
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-message.error {
    background: #fee;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.form-message.success {
    background: #efe;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.form-message svg {
    flex-shrink: 0;
}

/* Input Validation States */
.form-group input.invalid,
.form-group select.invalid,
.form-group textarea.invalid {
    border-color: var(--danger-color);
}

.form-group input.valid,
.form-group select.valid,
.form-group textarea.valid {
    border-color: var(--success-color);
}

.field-error {
    color: var(--danger-color);
    font-size: 13px;
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.field-error svg {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .auth-container {
        margin: 30px 20px;
    }
    
    .auth-form {
        padding: 30px 25px;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
    
    .auth-features {
        grid-template-columns: 1fr;
        gap: 40px;
        margin: 40px 0;
    }
}

@media (max-width: 480px) {
    .auth-form {
        padding: 25px 20px;
    }
    
    .form-group input,
    .form-group select {
        padding: 12px 14px;
        font-size: 14px;
    }
    
    .btn-submit {
        padding: 14px;
        font-size: 15px;
    }
    
    .social-login {
        gap: 10px;
    }
    
    .btn-social {
        padding: 12px;
        font-size: 14px;
    }
}

/* Animation */
.auth-form {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}