/* Base Styles */
:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #f39c12;
    --text-color: #333;
    --light-text: #666;
    --lighter-text: #999;
    --background-color: #f5f5f5;
    --card-color: #fff;
    --border-color: #ddd;
    --success-color: #2ecc71;
    --warning-color: #e74c3c;
    --accent-color: #9b59b6;
    --shadow: 0 2px 5px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

ul, ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

h1, h2, h3, h4, h5, h6 {
    margin-bottom: 15px;
    line-height: 1.3;
    color: var(--text-color);
}

p {
    margin-bottom: 15px;
}

img {
    max-width: 100%;
    height: auto;
}

/* Header Styles */
header {
    background-color: var(--card-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    padding: 20px 0;
}

.logo h1 {
    font-size: 28px;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.logo p {
    font-size: 16px;
    color: var(--light-text);
    margin-bottom: 0;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav li {
    margin-right: 20px;
}

.main-nav a {
    display: block;
    padding: 10px 0;
    color: var(--text-color);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.main-nav a:hover, 
.main-nav a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* Breadcrumbs */
.breadcrumbs {
    padding: 15px 0;
    font-size: 14px;
}

.breadcrumbs ul {
    display: flex;
    list-style: none;
    margin: 0;
}

.breadcrumbs li {
    margin-right: 10px;
}

.breadcrumbs li:after {
    content: "›";
    margin-left: 10px;
    color: var(--lighter-text);
}

.breadcrumbs li:last-child:after {
    content: "";
    margin: 0;
}

.breadcrumbs a {
    color: var(--light-text);
}

.breadcrumbs li:last-child {
    color: var(--text-color);
    font-weight: 500;
}

/* Main Content Layout */
main {
    display: flex;
    flex-wrap: wrap;
    padding: 30px 0;
}

.content {
    flex: 1;
    min-width: 0;
    margin-right: 30px;
}

.sidebar {
    width: 300px;
}

/* Card Styles */
.card {
    background-color: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--shadow);
    padding: 25px;
    margin-bottom: 30px;
}

.card h3 {
    font-size: 22px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.card h4 {
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 15px;
}

/* Sidebar Widgets */
.sidebar-widget {
    background-color: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 30px;
}

.sidebar-widget h3 {
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-widget ul {
    list-style: none;
    margin: 0;
}

.sidebar-widget li {
    margin-bottom: 10px;
}

.sidebar-widget a {
    color: var(--text-color);
    transition: var(--transition);
}

.sidebar-widget a:hover {
    color: var(--primary-color);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--background-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    text-decoration: none;
}

.btn:hover {
    background-color: var(--border-color);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

.week-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

/* Grid Layouts */
.week-grid, 
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.week-card, 
.resource-card {
    background-color: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--shadow);
    padding: 20px;
    transition: var(--transition);
}

.week-card:hover, 
.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.week-card h3, 
.resource-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* Tabs */
.tabs {
    margin-bottom: 30px;
}

.tab-nav {
    display: flex;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.tab-nav button {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-weight: 500;
    color: var(--light-text);
    transition: var(--transition);
}

.tab-nav button:hover {
    color: var(--primary-color);
}

.tab-nav button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Collapsible Sections */
.collapsible {
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

.collapsible-header {
    padding: 15px;
    background-color: var(--background-color);
    cursor: pointer;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.collapsible-header:after {
    content: "+";
    font-size: 20px;
    color: var(--light-text);
}

.collapsible.active .collapsible-header:after {
    content: "−";
}

.collapsible-content {
    padding: 0 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapsible.active .collapsible-content {
    padding: 15px;
    max-height: 1000px;
}

/* Progress Tracking */
.progress-tracker {
    height: 10px;
    background-color: var(--border-color);
    border-radius: 5px;
    margin-bottom: 10px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 0.5s ease;
}

.progress-checkbox {
    display: flex;
    align-items: center;
    margin-top: 15px;
    cursor: pointer;
}

.progress-checkbox input {
    margin-right: 10px;
}

/* Assessment Tools */
.assessment-tool {
    background-color: var(--background-color);
    border-radius: 5px;
    padding: 20px;
    margin-top: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.quiz-container {
    margin-top: 20px;
}

.quiz-question {
    margin-bottom: 20px;
    padding: 20px;
    background-color: var(--background-color);
    border-radius: 5px;
}

.quiz-options {
    margin-bottom: 15px;
}

.quiz-options label {
    display: block;
    margin-bottom: 10px;
    cursor: pointer;
}

.quiz-result {
    margin-top: 10px;
    padding: 10px;
    border-radius: 5px;
    display: none;
}

.quiz-result.correct {
    background-color: rgba(46, 204, 113, 0.2);
    color: var(--success-color);
}

.quiz-result.incorrect {
    background-color: rgba(231, 76, 60, 0.2);
    color: var(--warning-color);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid var(--border-color);
}

th {
    background-color: var(--background-color);
    font-weight: 500;
}

/* Blockquote */
blockquote {
    padding: 15px;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
    background-color: var(--background-color);
    font-style: italic;
}

blockquote footer {
    margin-top: 10px;
    font-style: normal;
    color: var(--light-text);
}

/* Footer */
footer {
    background-color: var(--card-color);
    padding: 30px 0;
    text-align: center;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.05);
}

footer p {
    margin-bottom: 5px;
    color: var(--light-text);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .content {
        margin-right: 0;
        margin-bottom: 30px;
    }
    
    main {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        width: 100%;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
    }
    
    .main-nav li {
        margin-right: 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .main-nav a {
        padding: 15px 0;
    }
    
    .mobile-menu-toggle {
        display: block;
        position: absolute;
        top: 20px;
        right: 20px;
    }
    
    .logo {
        padding-right: 50px;
    }
    
    .week-grid, 
    .resource-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-nav {
        flex-direction: column;
    }
    
    .tab-nav button {
        width: 100%;
        text-align: left;
        padding: 15px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .tab-nav button.active {
        border-bottom: 1px solid var(--primary-color);
    }
    
    .week-nav {
        flex-direction: column;
    }
    
    .week-nav .btn {
        margin-bottom: 10px;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 24px;
    }
    
    .logo p {
        font-size: 14px;
    }
    
    h2 {
        font-size: 24px;
    }
    
    .card {
        padding: 15px;
    }
}