/* Basecamp Design Language */
:root {
    --bg-primary: #FAFAF8;
    --text-primary: #1D1D1D;
    --accent-primary: #1CA74E;
    --accent-secondary: #3B5998;
    --bg-code: #F5F5F3;
    --border-subtle: #E5E5E1;
    --shadow-subtle: 0 1px 3px rgba(0,0,0,0.12);
    --border-radius: 6px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.slide-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 4rem;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
    visibility: hidden;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

/* Slide Types */
.slide[data-slide-type="title"] h1 {
    font-size: 64px;
    margin: 0;
}
.slide[data-slide-type="title"] .subtitle {
    font-size: 28px;
    margin-top: 1rem;
    color: #555;
}

.slide[data-slide-type="headline-text"] h2 {
    font-size: 48px;
    margin-bottom: 1rem;
}
.slide[data-slide-type="headline-text"] p {
    font-size: 24px;
    line-height: 1.6;
    max-width: 800px;
}

.slide[data-slide-type="bullets"] h2 {
    font-size: 48px;
    margin-bottom: 2rem;
    align-self: flex-start;
    width: 100%;
    text-align: left;
}
.slide[data-slide-type="bullets"] ul {
    font-size: 28px;
    line-height: 1.8;
    list-style-position: inside;
    text-align: left;
    align-self: flex-start;
    padding-left: 0;
    margin: 0;
}
.slide[data-slide-type="bullets"] ul li {
    margin-bottom: 1rem;
}

.slide[data-slide-type="image-only"] {
    padding: 0;
}
.slide[data-slide-type="image-only"] img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* TODO: refactor */
.slide[data-slide-type="image-only-contain"] {
    padding: 2rem;
}
.slide[data-slide-type="image-only-contain"] img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.slide[data-slide-type="image-only"] video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.slide[data-slide-type="image-only"] iframe {
    width: 90%;
    height: 90%;

    resize: both; 
    overflow: scroll; 
    border: 1px solid #ccc;
}

.slide[data-slide-type="image-text"] {
    flex-direction: row;
    gap: 2rem;
    text-align: left;
}
.slide[data-slide-type="image-text"] .image-container {
    flex: 1;
}
.slide[data-slide-type="image-text"] img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-subtle);
}
.slide[data-slide-type="image-text"] .text-container {
    flex: 1;
}
.slide[data-slide-type="image-text"] h2 {
    font-size: 48px;
}
.slide[data-slide-type="image-text"] p {
    font-size: 24px;
    line-height: 1.6;
}

.slide[data-slide-type="code"] {
    text-align: left;
}
.slide[data-slide-type="code"] h2 {
    font-size: 36px;
    margin-bottom: 1rem;
}
.slide[data-slide-type="code"] pre {
    background-color: var(--bg-code);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    width: 80%;
    box-shadow: var(--shadow-subtle);
    font-size: 18px;
}

.slide[data-slide-type="headline-images"] h2 {
    font-size: 48px;
    margin-bottom: 2rem;
}

.slide[data-slide-type="headline-images"] .image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 1.5rem;
    width: 80%;
    max-width: 1000px;
}

.slide[data-slide-type="headline-images"] .image-grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-subtle);
}

.slide[data-slide-type="code-explanation"] {
    text-align: left;
}
.slide[data-slide-type="code-explanation"] h2 {
    font-size: 48px;
    margin-bottom: 2rem;
}
.slide[data-slide-type="code-explanation"] pre {
    background-color: var(--bg-code);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    width: 80%;
    box-shadow: var(--shadow-subtle);
    font-size: 22px;
    margin-bottom: 1rem;
}
.slide[data-slide-type="code-explanation"] .explanation-container {
    width: 80%;
    min-height: 100px; /* Reserve space for explanations */
    position: relative;
}
.slide[data-slide-type="code-explanation"] .explanation-container .fragment {
    position: absolute;
    font-size: 22px;
    line-height: 1.6;
}
.slide[data-slide-type="code-explanation"] [data-highlight-id] {
    transition: background-color 0.3s ease;
    border-radius: 4px;
}
.slide[data-slide-type="code-explanation"] [data-highlight-id].highlight-active {
    background-color: rgba(28, 167, 78, 0.2);
}

.slide[data-slide-type="quote"] blockquote {
    font-size: 48px;
    font-style: italic;
    line-height: 1.4;
    max-width: 800px;
    border-left: 5px solid var(--accent-primary);
    padding-left: 2rem;
    margin: 0;
    text-align: left;
}

.slide[data-slide-type="quote"] footer {
    font-size: 24px;
    margin-top: 2rem;
    color: #555;
    max-width: 800px;
    width: 100%;
    text-align: right;
}

/* Fragment styles */
.fragment {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease-in-out;
}

.fragment.visible {
    opacity: 1;
    visibility: visible;
}

/* UI Elements */
.slide-counter {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 16px;
    background-color: rgba(0,0,0,0.1);
    padding: 5px 10px;
    border-radius: var(--border-radius);
    z-index: 10;
}

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background-color: var(--accent-primary);
    width: 0;
    transition: width 0.2s linear;
    z-index: 10;
}

.fullscreen-hint {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--accent-secondary);
    color: white;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    z-index: 10;
    cursor: pointer;
    font-size: 14px;
}

.toc-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    z-index: 20;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}
.toc-overlay.visible {
    opacity: 1;
    visibility: visible;
}
.toc-content {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
}
.toc-content h2 {
    margin-top: 0;
    color: var(--text-primary);
}
.toc-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.toc-content li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-subtle);
    cursor: pointer;
    color: var(--text-primary);
}
.toc-content li:hover {
    color: var(--accent-primary);
}

/* Grid Overlay */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(250, 250, 248, 0.98); /* --bg-primary with opacity */
    z-index: 30;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    overflow-y: auto;
    padding: 4rem;
    box-sizing: border-box;
}

.grid-overlay.visible {
    opacity: 1;
    visibility: visible;
}

#grid-container {
    display: grid;
    gap: 1rem; /* A smaller gap might be better for calculated grids */
    width: 100%;
    height: 100%;
}

.grid-thumbnail {
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    background-color: white;
    box-shadow: var(--shadow-subtle);
    cursor: pointer;
    position: relative;
    /* aspect-ratio is no longer needed as the grid will enforce it */
    overflow: hidden;
    transform: scale(1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.grid-thumbnail:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.grid-thumbnail .slide-clone {
    /* transform, width, and height will be set dynamically by JS */
    transform-origin: top left;
    pointer-events: none;
    /* Re-enable visibility for the clone */
    visibility: visible;
    opacity: 1;
}

.grid-thumbnail .slide-number {
    position: absolute;
    bottom: 8px;
    right: 8px;
    font-size: 14px;
    font-weight: bold;
    background-color: rgba(0,0,0,0.5);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
}

/* Speaker notes - not visible during presentation */
aside {
    display: none;
    visibility: hidden;
    position: absolute;
    left: -9999px;
    top: -9999px;
}

/* Flex Layouts */

.r-hstack, 
.r-vstack {
  display: flex;
}
.r-hstack {
  flex-direction: row;
  align-items: center;
  justify-content: center;
}
.r-vstack {
  flex-direction: column;
  align-items: center;
  justify-content: center;
}


.iframe-device {
    border: #52514f solid;
    border-width: 10px 10px 20px;
    border-radius: 10px;

    resize: both; 
    overflow: auto; 
    width: 90%px; 
    height: 80%; 
    display: inline-block;
}
.iframe-device iframe {
    width: 100%; height: 100%; border: none; display: block;
}

/* Print Styles */
@media print {
    :root {
        --print-notes-font-size: 12pt; /* Single variable for easy font size adjustment */
    }

    /* Reset body and container styling for printing */
    body {
        overflow: visible;
        display: block;
        height: auto;
        background-color: white;
        color: black;
        padding: 1cm;
        margin: 0;
        font-family: var(--font-family);
    }

    /* Show all slides in print layout */
    .slide-container {
        width: 100%;
        height: auto;
        position: static;
        display: block;
    }

    /* Style each slide as a small preview */
    .slide {
        clear: both;
        position: relative;
        visibility: visible !important;
        opacity: 1 !important;
        width: 4cm;
        height: 4.25cm;
        padding: 0.2cm;
        border: 1px solid #ccc;
        overflow: hidden;
        display: block;
        float: left;
        page-break-inside: avoid;
        /* We need to scale down the content to fit in 4cm */
        transform: scale(0.8);
        transform-origin: top left;
    }
    
    /* Allow internal slide elements to appear at original size */
    .slide > * {
        transform-origin: top left;
    }

    /* Show all fragments in printed version */
    .fragment {
        visibility: visible !important;
        opacity: 1 !important;
    }

    /* Show speaker notes */
    aside {
        clear: both;
        display: block;
        visibility: visible;
        position: relative;
        left: auto;
        top: auto;
        margin-left: 4.5cm; /* Position notes to the right of the slide */
        margin-bottom: 1.5cm;
        padding-bottom: 0.5cm;
        border-bottom: 1px dotted #ccc;
        font-size: var(--print-notes-font-size);
        line-height: 1.5;
        text-align: left;
        color: #333;
        width: 13cm; /* Allow enough space for notes on A4 */
        white-space: pre-wrap;
        clear: right;
    }

    /* Hide presentation UI elements */
    .slide-counter,
    .progress-bar,
    .fullscreen-hint,
    .toc-overlay,
    .grid-overlay {
        display: none;
    }

    h1, h2 {
        font-size: unset !important;
    }

    /* Add slide title/number as label */
    .slide::after {
        content: "Slide " attr(data-slide-number) ": " attr(data-title);
        position: absolute;
        bottom: -1.2cm;
        left: 0;
        font-size: var(--print-notes-font-size);
        font-weight: bold;
        white-space: nowrap;
        color: black;
    }

    /* Set up page format */
    @page {
        size: A4;
        margin: 1.0cm;
    }

    /* Fix code formatting */
    pre {
        overflow: hidden;
        max-width: 100%;
    }
    
    /* Handle specific slide types */
    .slide[data-slide-type="image-only"] img,
    .slide[data-slide-type="image-only-contain"] img {
        max-width: 100%;
        max-height: 100%;
    }
    
    /* Make iframes static in print */
    .iframe-device {
        border: 1px solid #ccc;
        overflow: hidden;
    }
}