/* 
 * PRODOCET LMS - Authentication Styles
 * Author: Assistant
 * Description: CSS styles for login and signup pages
 */

:root {
    /* Primary color scheme - easily customizable */
    --primary-color: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: #6366f1;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    
    /* Neutral colors */
    --background-light: #f8fafc;
    --background-white: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    
    /* Shadow and effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Border radius */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;

    --background-dark: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #fff;
    min-height: 100vh;
    color: var(--text-primary);
}

/* Authentication Container */
.auth-container {
    min-height: 100vh;
    position: relative;
}

/* Brand Side Styling */
.auth-brand-side {
    /* background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%); */
    position: relative;
    overflow: hidden;
}

.auth-brand-side::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"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.brand-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    color: var(--primary-color);
}

.brand-logo {
    text-align: center;
    margin-bottom: 3rem;
}

.brand-logo img {
    width: 170px;
    height: 120px;
    background: #fff;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: var(--transition-normal);
}

.brand-logo img:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.brand-logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.brand-subtitle {
    font-size: 1.125rem;
    opacity: 0.8;
    font-weight: 300;
}

.brand-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 300px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(10px);
}

.feature-item i {
    font-size: 1.25rem;
    width: 20px;
    text-align: center;
}

.feature-item span {
    font-weight: 500;
}

/* Form Side Styling */
.auth-form-side {
    /* background:  */
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-form-container {
    width: 100%;
    max-width: 450px;
}

.mobile-logo {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.mobile-logo img {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.mobile-logo h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

/* Form Styling */
.auth-form {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.5rem;
}

.form-subtitle {
    color: #fff;
    margin-bottom: 2rem;
    font-size: 1rem;
}

.form-group {
    position: relative;
}

.form-label {
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.input-group {
    position: relative;
}

.input-group-text {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-right: none;
}

.form-control {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--background-white);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.25);
    background: var(--background-white);
}

.form-select {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--background-white);
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.25);
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline-secondary {
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--background-light);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Form Elements */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-label {
    color: #fff;
    font-size: 0.875rem;
}

/* Form Footer */
.form-footer {
    margin-top: 2rem;
    text-align: center;
}

.forgot-password {
    color: #fff;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

.signup-link,
.login-link {
    margin-top: 1.5rem;
    color: #fff;
    font-size: 0.875rem;
}

.signup-link a,
.login-link a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.signup-link a:hover,
.login-link a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Loading States */
.login-btn:disabled,
.signup-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loading {
    position: relative;
    color: transparent !important;
}

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

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .auth-form-side {
        padding: 1rem;
    }
    
    .auth-form-container {
        max-width: 100%;
    }
    
    .form-title {
        font-size: 1.5rem;
    }
    
    .brand-logo h1 {
        font-size: 2rem;
    }
    
    .brand-logo i {
        font-size: 3rem;
    }
}

@media (max-width: 576px) {
    .auth-form-side {
        padding: 0.5rem;
    }
    
    .form-title {
        font-size: 1.375rem;
    }
    
    .btn-primary {
        padding: 0.875rem 1.5rem;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --background-white: #1f2937;
        --background-light: #374151;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-muted: #9ca3af;
        --border-color: #4b5563;
        --border-light: #374151;
    }
}

/* Form validation styles */
.form-control.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-control.is-valid {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(16, 185, 129, 0.25);
}

.invalid-feedback,
.valid-feedback {
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Accessibility improvements */
.form-control:focus,
.form-select:focus,
.btn:focus {
    outline: none;
}

.form-control:focus-visible,
.form-select:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Animation for form transitions */
.auth-form.fade-out {
    animation: fadeOutDown 0.3s ease-in forwards;
}

.auth-form.fade-in {
    animation: fadeInUp 0.3s ease-out forwards;
}

@keyframes fadeOutDown {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-30px);
    }
}