/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f6fa;
}

/* Header styles */
header {
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 80px; /* Fixed height */
    display: flex;
    align-items: center;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo h1 {
    font-size: 1.5rem;
    color: #2c3e50;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #3498db;
}



/* Authentication styles */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f5f5f5;
    padding: 20px;
}

.auth-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 500px;
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

/* Form Styles */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: #555;
}

.form-group input,
.form-group select {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    border-color: #4CAF50;
    outline: none;
}

.form-group input.is-invalid,
.form-group select.is-invalid {
    border-color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 14px;
}

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

.password-input input {
    padding-right: 40px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #666;
}

.toggle-password:hover {
    color: #333;
}

/* Password Strength */
.password-strength {
    margin-top: 8px;
}

.strength-bar {
    height: 4px;
    background: #ddd;
    border-radius: 2px;
    width: 0;
    transition: all 0.3s ease;
}

.strength-bar.weak { background: #dc3545; }
.strength-bar.medium { background: #ffc107; }
.strength-bar.good { background: #28a745; }
.strength-bar.strong { background: #17a2b8; }

.strength-text {
    font-size: 12px;
    color: #666;
    margin-top: 4px;
    display: block;
}

/* Remember Me & Forgot Password */
.remember-forgot {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.forgot-password {
    color: #4CAF50;
    text-decoration: none;
    font-size: 14px;
}

.forgot-password:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #4CAF50;
    color: white;
}

.btn-primary:hover {
    background: #45a049;
}

/* Auth Links */
.auth-links {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
}

.auth-links a {
    color: #4CAF50;
    text-decoration: none;
}

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

/* Alerts */
.alert {
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

/* Responsive Design */
@media (max-width: 600px) {
    .auth-box {
        padding: 20px;
    }

    .remember-forgot {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Flash messages */
#msg-flash {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    text-align: center;
}

/* Hero section styles */
.hero {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 4rem 1rem;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn.secondary:hover {
    background-color: rgba(255,255,255,0.1);
}

/* Footer styles */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

/* Responsive design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .auth-container {
        padding: 1rem;
    }

    .auth-box {
        padding: 1.5rem;
    }
}

/* Course styles */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.courses-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.course-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
}

.course-card-body {
    padding: 1.5rem;
}

.course-title {
    font-size: 1.25rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.course-trainer {
    color: #666;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.course-description {
    color: #444;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.course-meta {
    font-size: 0.875rem;
    color: #666;
}

.course-card-footer {
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Course detail page */
.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.course-title-section h1 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.course-actions {
    display: flex;
    gap: 1rem;
}

.course-content {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 2rem;
}

.course-description {
    margin-bottom: 3rem;
}

.course-description h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.materials-list {
    display: grid;
    gap: 1rem;
}

.material-card {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    gap: 1rem;
}

.material-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #e9ecef;
    border-radius: 8px;
}

.material-info {
    flex: 1;
}

.material-info h3 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 0.25rem;
}

.material-info p {
    color: #666;
    font-size: 0.875rem;
}

/* Form styles */
.form-container {
    max-width: 800px;
    margin: 0 auto;
}

.form {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.btn-outline {
    background: transparent;
    border: 2px solid #3498db;
    color: #3498db;
}

.btn-outline:hover {
    background: #3498db;
    color: white;
}

/* Material type icons */
.material-icon-video { content: "📹"; }
.material-icon-audio { content: "🎵"; }
.material-icon-pdf { content: "📄"; }
.material-icon-document { content: "📝"; }

/* Responsive adjustments */
@media (max-width: 768px) {
    .course-header {
        flex-direction: column;
        gap: 1rem;
    }

    .course-actions {
        width: 100%;
    }

    .course-actions .btn {
        flex: 1;
    }

    .material-card {
        flex-direction: column;
        text-align: center;
    }

    .material-info {
        text-align: center;
    }
}

/* Navigation dropdown styles */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border-radius: 4px;
    min-width: 200px;
    z-index: 1000;
}

.dropdown.active .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    display: block;
}

.dropdown-menu a {
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-menu a:hover {
    background: #f8f9fa;
}

/* Footer styles */
footer {
    background: #2c3e50;
    color: #fff;
    padding: 3rem 1rem 1rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: #fff;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Icon styles */
.fas {
    margin-right: 0.5rem;
}

/* Flash message styles */
.alert {
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
    text-align: center;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Responsive styles */
@media (max-width: 768px) {
    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    nav ul.active {
        display: flex;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        margin-left: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Dashboard styles */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #2c3e50;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.empty-state p {
    color: #666;
    margin-bottom: 1.5rem;
}

.empty-state .btn {
    display: inline-block;
    width: auto;
}

.dashboard-section {
    margin-bottom: 3rem;
}

.dashboard-section h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

/* Responsive dashboard */
@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .dashboard-actions {
        width: 100%;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }
}

/* Password Strength Indicator */
.password-strength {
    margin-top: 10px;
    background: #f0f0f0;
    border-radius: 4px;
    overflow: hidden;
}

.strength-bar {
    height: 4px;
    width: 0;
    transition: all 0.3s ease;
}

.strength-bar.weak { background-color: #ff4444; }
.strength-bar.fair { background-color: #ffbb33; }
.strength-bar.good { background-color: #00C851; }
.strength-bar.strong { background-color: #007E33; }
.strength-bar.very-strong { background-color: #004d1a; }

.strength-text {
    font-size: 0.8em;
    color: #666;
    display: block;
    margin-top: 5px;
}

.password-requirements {
    margin-top: 10px;
    font-size: 0.9em;
    color: #666;
}

.password-requirements ul {
    list-style: none;
    padding: 0;
    margin: 5px 0;
}

.password-requirements li {
    margin: 3px 0;
    padding-left: 20px;
    position: relative;
}

.password-requirements li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: #ff4444;
}

.password-requirements li.met::before {
    content: '✓';
    color: #00C851;
}

/* Terms and Conditions */
.terms-group {
    margin: 20px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.checkbox-label a {
    color: #007bff;
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

/* Form Validation Styles */
.error-message {
    color: #dc3545;
    font-size: 0.85em;
    margin-top: 5px;
    display: block;
}

.form-group input.error,
.form-group select.error {
    border-color: #dc3545;
}

.form-group input.error:focus,
.form-group select.error:focus {
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .password-requirements {
        font-size: 0.8em;
    }
    
    .strength-text {
        font-size: 0.75em;
    }
}