/* ====================================
   DATA ANALYSIS TEXTBOOK STYLESHEET
   Created: 2025-10-17
   Version: 1.1 - Added dashboard styles
   Updated: 2025-10-20
   Author: Gábor Békés
   ==================================== */

/* ====================================
   COLOR PALETTE - Wes Anderson Style
   ==================================== */
:root {
    --wes-cream: #F7F3E9;
    --wes-coral: #D63384;
    --wes-mint: #20C997;
    --wes-yellow: #FFC107;
    --wes-navy: #2C3E50;
    --wes-gray: #ADB5BD;
    --wes-purple: #6F42C1;
    
    /* Light variants for backgrounds */
    --wes-light-coral: rgba(214, 51, 132, 0.1);
    --wes-light-mint: rgba(32, 201, 151, 0.1);
    --wes-light-yellow: rgba(255, 193, 7, 0.15);
    --wes-light-purple: rgba(111, 66, 193, 0.1);
    --wes-light-navy: rgba(44, 62, 80, 0.05);
    
    /* Shadows */
    --wes-shadow: rgba(44, 62, 80, 0.15);
    --wes-shadow-strong: rgba(44, 62, 80, 0.25);
}

/* ====================================
   BASE STYLES
   ==================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Lora', Georgia, serif;
    background: var(--wes-cream);
    color: var(--wes-navy);
    font-size: 18px;
    line-height: 1.8;
    padding: 0;
}

/* ====================================
   TYPOGRAPHY
   ==================================== */

/* Main headers - Anton (bold, display) */
h1, .chapter-title {
    font-family: 'Anton', 'Impact', sans-serif;
    font-size: 3rem;
    color: var(--wes-coral);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin: 2rem 0 1rem 0;
    line-height: 1.2;
}

/* Section headers - Oswald (medium weight) */
h2 {
    font-family: 'Oswald', 'Arial Narrow', sans-serif;
    font-size: 2rem;
    font-weight: 600;
    color: var(--wes-navy);
    margin: 2.5rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--wes-coral);
}

/* Subsection headers - Oswald */
h3 {
    font-family: 'Oswald', 'Arial Narrow', sans-serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--wes-mint);
    margin: 2rem 0 0.75rem 0;
}

/* Small headers - Roboto Condensed */
h4 {
    font-family: 'Roboto Condensed', 'Arial Narrow', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--wes-navy);
    margin: 1.5rem 0 0.5rem 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Body text - Lora (serif, readable) */
p {
    font-family: 'Lora', Georgia, serif;
    margin: 0 0 1.2rem 0;
    text-align: justify;
}

/* Links */
a {
    color: var(--wes-coral);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

a:hover {
    border-bottom-color: var(--wes-coral);
}

/* Strong/Bold */
strong, b {
    font-weight: 600;
    color: var(--wes-navy);
}

/* Emphasis/Italic */
em, i {
    font-style: italic;
}

/* Code inline */
code {
    font-family: 'Courier New', monospace;
    background: var(--wes-light-navy);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9em;
}

/* ====================================
   LAYOUT
   ==================================== */

/* Main container */
.main-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

/* Wide container for tables/figures */
.wide-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* ====================================
   CALLOUT BOXES (Quarto)
   ==================================== */

/* Motivation box - Yellow */
.callout-note {
    background: var(--wes-light-yellow);
    border-left: 5px solid var(--wes-yellow);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 5px;
}

.callout-note .callout-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--wes-navy);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Important box - Coral */
.callout-important {
    background: var(--wes-light-coral);
    border-left: 5px solid var(--wes-coral);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 5px;
}

.callout-important .callout-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--wes-coral);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tip box - Mint */
.callout-tip {
    background: var(--wes-light-mint);
    border-left: 5px solid var(--wes-mint);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 5px;
}

.callout-tip .callout-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--wes-mint);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Warning box - Purple */
.callout-warning {
    background: var(--wes-light-purple);
    border-left: 5px solid var(--wes-purple);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 5px;
}

.callout-warning .callout-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--wes-purple);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ====================================
   CUSTOM BOXES
   ==================================== */

/* Review box - Navy border */
.review-box {
    background: white;
    border: 3px solid var(--wes-navy);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--wes-shadow);
}

.review-box-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--wes-navy);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Case study box - Coral accent */
.case-study {
    background: white;
    border: 3px solid var(--wes-coral);
    padding: 2rem;
    margin: 3rem 0;
    border-radius: 8px;
    box-shadow: 0 6px 12px var(--wes-shadow);
}

.case-study-title {
    font-family: 'Anton', sans-serif;
    font-size: 2rem;
    color: var(--wes-coral);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* AI Task box - Purple */
.ai-task {
    background: linear-gradient(135deg, var(--wes-light-purple) 0%, white 100%);
    border: 2px solid var(--wes-purple);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 2rem 0;
    position: relative;
}

.ai-task-icon {
    font-family: 'Oswald', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--wes-purple);
    display: inline-block;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ai-task-copy {
    background: var(--wes-purple);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Roboto Condensed', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.75rem;
    transition: all 0.3s;
}

.ai-task-copy:hover {
    background: var(--wes-navy);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--wes-shadow);
}

/* ====================================
   CODE BLOCKS
   ==================================== */

/* Code block container */
.code-block {
    background: var(--wes-navy);
    color: var(--wes-cream);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    overflow-x: auto;
    position: relative;
}

.code-block pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.code-header {
    font-family: 'Roboto Condensed', sans-serif;
    font-weight: 700;
    color: var(--wes-mint);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--wes-mint);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.code-link {
    background: var(--wes-mint);
    color: var(--wes-navy);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    display: inline-block;
    margin-top: 1rem;
    font-family: 'Roboto Condensed', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.code-link:hover {
    background: var(--wes-coral);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--wes-shadow);
}

/* ====================================
   BUTTONS & INTERACTIVE ELEMENTS
   ==================================== */

/* Primary button - Coral */
.btn-primary {
    background: var(--wes-coral);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    font-family: 'Oswald', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    background: var(--wes-navy);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--wes-shadow);
}

/* Secondary button - Mint */
.btn-secondary {
    background: var(--wes-mint);
    color: var(--wes-navy);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    font-family: 'Oswald', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--wes-coral);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--wes-shadow);
}

/* Dashboard button - Yellow */
.btn-dashboard {
    background: var(--wes-yellow);
    color: var(--wes-navy);
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-family: 'Anton', sans-serif;
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
    box-shadow: 0 4px 8px var(--wes-shadow);
}

.btn-dashboard:hover {
    background: var(--wes-coral);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 16px var(--wes-shadow-strong);
}

/* ====================================
   TABLES
   ==================================== */

table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px var(--wes-shadow);
}

thead {
    background: var(--wes-navy);
    color: white;
}

thead th {
    padding: 1rem;
    text-align: left;
    font-family: 'Oswald', sans-serif;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

tbody tr {
    border-bottom: 1px solid var(--wes-light-navy);
}

tbody tr:nth-child(even) {
    background: var(--wes-light-navy);
}

tbody tr:hover {
    background: var(--wes-light-coral);
}

tbody td {
    padding: 0.75rem 1rem;
    font-family: 'Lora', serif;
}

/* Regression table specific styling */
.regression-table {
    font-size: 0.95rem;
}

.regression-table td:first-child {
    font-weight: 600;
    color: var(--wes-navy);
}

.regression-table td:not(:first-child) {
    text-align: center;
}

/* ====================================
   FIGURES & IMAGES
   ==================================== */

figure {
    margin: 2rem 0;
    text-align: center;
}

figure img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 6px 12px var(--wes-shadow);
}

figcaption {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 0.95rem;
    color: var(--wes-gray);
    margin-top: 0.75rem;
    text-align: center;
}

/* ====================================
   DASHBOARDS & IFRAMES
   ==================================== */

/* Dashboard container - Yellow theme */
.dashboard-container {
    background: white;
    border: 3px solid var(--wes-yellow);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 3rem 0;
    box-shadow: 0 6px 16px var(--wes-shadow);
}

.dashboard-title {
    font-family: 'Anton', sans-serif;
    font-size: 1.8rem;
    color: var(--wes-yellow);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    text-align: center;
}

.dashboard-subtitle {
    font-family: 'Oswald', sans-serif;
    font-size: 1.1rem;
    color: var(--wes-gray);
    text-align: center;
    margin-bottom: 1.5rem;
}

.dashboard-iframe {
    width: 100%;
    height: 600px;
    border: 2px solid var(--wes-light-yellow);
    border-radius: 8px;
    background: var(--wes-cream);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}

/* Dashboard callout box - Yellow theme */
.dashboard-box {
    background: linear-gradient(135deg, var(--wes-light-yellow) 0%, white 100%);
    border: 3px solid var(--wes-yellow);
    border-radius: 10px;
    padding: 2rem;
    margin: 2.5rem 0;
    text-align: center;
}

.dashboard-box-title {
    font-family: 'Anton', sans-serif;
    font-size: 1.5rem;
    color: var(--wes-yellow);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.dashboard-link {
    background: var(--wes-yellow);
    color: var(--wes-navy);
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-family: 'Anton', sans-serif;
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
    box-shadow: 0 4px 8px var(--wes-shadow);
    text-decoration: none;
    margin: 0.5rem;
}

.dashboard-link:hover {
    background: var(--wes-coral);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 16px var(--wes-shadow-strong);
    border-bottom: none;
}

/* Responsive dashboard */
@media (max-width: 768px) {
    .dashboard-iframe {
        height: 500px;
    }
    
    .dashboard-container {
        padding: 1rem;
    }
    
    .dashboard-title {
        font-size: 1.5rem;
    }
}

/* ====================================
   NAVIGATION
   ==================================== */

/* Page navigation */
.page-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 3rem 0 2rem 0;
    padding: 1rem 0;
    border-top: 3px solid var(--wes-coral);
    border-bottom: 3px solid var(--wes-coral);
}

.page-nav-prev,
.page-nav-next {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Oswald', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--wes-coral);
    transition: all 0.3s;
}

.page-nav-prev:hover,
.page-nav-next:hover {
    color: var(--wes-mint);
    transform: translateX(5px);
}

/* ====================================
   LISTS
   ==================================== */

ul, ol {
    margin: 1rem 0 1rem 2rem;
}

li {
    margin: 0.5rem 0;
    line-height: 1.6;
}

/* ====================================
   EQUATIONS (MathJax styling)
   ==================================== */

.MathJax {
    color: var(--wes-navy);
}

/* Display equations */
.MathJax_Display {
    margin: 1.5rem 0;
}

/* ====================================
   RESPONSIVE DESIGN
   ==================================== */

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }
    
    h1, .chapter-title {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    .main-content,
    .wide-content {
        padding: 1rem;
    }
    
    table {
        font-size: 0.85rem;
    }
    
    thead th,
    tbody td {
        padding: 0.5rem;
    }
}

/* ====================================
   PRINT STYLES
   ==================================== */

@media print {
    body {
        background: white;
        color: black;
    }
    
    .page-nav,
    .btn-primary,
    .btn-secondary,
    .btn-dashboard,
    .ai-task-copy,
    .code-link,
    .dashboard-iframe {
        display: none;
    }
}


/* ====================================
   BUY THE BOOK BANNER
   ==================================== */

.buy-book-banner {
    background: linear-gradient(135deg, var(--wes-light-navy) 0%, var(--wes-light-coral) 100%);
    border-left: 5px solid var(--wes-coral);
    border-radius: 8px;
    padding: 2rem;
    margin: 3rem 0;
    box-shadow: 0 4px 12px var(--wes-shadow);
}

.buy-book-content {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.buy-book-image {
    flex: 0 0 200px;
}

.buy-book-image img {
    width: 100%;
    max-width: 200px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 6px 16px var(--wes-shadow-strong);
    transition: transform 0.3s ease;
}

.buy-book-image img:hover {
    transform: scale(1.05) rotate(2deg);
}

.buy-book-text {
    flex: 1;
    min-width: 300px;
}

.buy-book-text h3 {
    font-family: 'Anton', sans-serif;
    font-size: 1.8rem;
    color: var(--wes-coral);
    margin: 0 0 1rem 0;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.buy-book-text p {
    font-family: 'Lora', serif;
    color: var(--wes-navy);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.btn-buy-book {
    display: inline-block;
    background: var(--wes-coral);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-family: 'Oswald', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 8px var(--wes-shadow);
    text-decoration: none;
}

.btn-buy-book:hover {
    background: var(--wes-navy);
    color: var(--wes-yellow);
    transform: translateY(-3px);
    box-shadow: 0 8px 16px var(--wes-shadow-strong);
    text-decoration: none;
}

.buy-book-links {
    font-size: 0.9rem;
    color: var(--wes-navy);
    margin-top: 1rem;
}

.buy-book-links a {
    color: var(--wes-coral);
    text-decoration: none;
    font-weight: 600;
}

.buy-book-links a:hover {
    color: var(--wes-navy);
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 768px) {
    .buy-book-content {
        flex-direction: column;
        text-align: center;
    }
    
    .buy-book-image {
        flex: 0 0 auto;
    }
    
    .buy-book-text h3 {
        font-size: 1.5rem;
    }
    
    .btn-buy-book {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}