styling.css

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

body {
    font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow: hidden;
    color: white;
}

/* Headings use Inter for impact */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.presentation-container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem;
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.active {
    opacity: 1;
    transform: translateX(0);
}

.slide.prev {
    transform: translateX(-100px);
}

.slide.loading {
    opacity: 0.7;
}

.slide.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #ffd700;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

h1 {
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 900;
    margin-bottom: 2rem;
    background: linear-gradient(45deg, #fff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

h2 {
    font-size: clamp(2rem, 6vw, 5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

h3 {
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffd700;
}

.subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: 3rem;
    max-width: 800px;
}

.demo-title {
    margin-bottom: 1rem;
    color: #ffd700;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    width: 100%;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.feature-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 1rem 2rem;
    border-radius: 30px;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    font-weight: 600;
    text-align: center;
    color: white;
    font-size: 1.1rem;
}

.feature-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.feature-badge:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.5),
        inset 0 -1px 0 rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.2);
}

/* Responsive scrolling animation for smaller screens */
@media (max-width: 1300px) {
    .feature-grid {
        display: block;
        overflow: hidden;
        position: relative;
        height: 70vh;
        mask: linear-gradient(to right, transparent 0%, black 30%, black 70%, transparent 100%);
        -webkit-mask: linear-gradient(to right, transparent 0%, black 30%, black 70%, transparent 100%);
    }

    .feature-item {
        position: absolute;
        opacity: 0;
        transform: translateX(-100vw);
        animation: scrollFeature 15s infinite linear;
        padding: 0.8rem;
        width: auto;
        min-width: 280px;
        max-width: 350px;
        z-index: 1;
    }

    .feature-badge {
        font-size: 0.95rem;
        padding: 0.8rem 1.5rem;
        white-space: nowrap;
        display: block;
        width: 100%;
        text-align: center;
    }

    /* Stagger the animations for each row with faster timing */
    .feature-item:nth-child(1) {
        animation-delay: 0s;
        top: 8%;
    }

    .feature-item:nth-child(2) {
        animation-delay: 1.8s;
        top: 8%;
    }

    .feature-item:nth-child(3) {
        animation-delay: 3.6s;
        top: 8%;
    }

    .feature-item:nth-child(4) {
        animation-delay: 5.4s;
        top: 8%;
    }

    .feature-item:nth-child(5) {
        animation-delay: 0.6s;
        top: 25%;
    }

    .feature-item:nth-child(6) {
        animation-delay: 2.4s;
        top: 25%;
    }

    .feature-item:nth-child(7) {
        animation-delay: 4.2s;
        top: 25%;
    }

    .feature-item:nth-child(8) {
        animation-delay: 6s;
        top: 25%;
    }

    .feature-item:nth-child(9) {
        animation-delay: 1.2s;
        top: 42%;
    }

    .feature-item:nth-child(10) {
        animation-delay: 3s;
        top: 42%;
    }

    .feature-item:nth-child(11) {
        animation-delay: 4.8s;
        top: 42%;
    }

    .feature-item:nth-child(12) {
        animation-delay: 6.6s;
        top: 42%;
    }

    .feature-item:nth-child(13) {
        animation-delay: 0.3s;
        top: 59%;
    }

    .feature-item:nth-child(14) {
        animation-delay: 2.1s;
        top: 59%;
    }

    .feature-item:nth-child(15) {
        animation-delay: 3.9s;
        top: 59%;
    }

    .feature-item:nth-child(16) {
        animation-delay: 5.7s;
        top: 59%;
    }

    .feature-item:nth-child(17) {
        animation-delay: 0.9s;
        top: 76%;
    }

    .feature-item:nth-child(18) {
        animation-delay: 2.7s;
        top: 76%;
    }

    .feature-item:nth-child(19) {
        animation-delay: 4.5s;
        top: 76%;
    }

    .feature-item:nth-child(20) {
        animation-delay: 6.3s;
        top: 76%;
    }
}

@keyframes scrollFeature {
    0% {
        transform: translateX(-120vw);
        opacity: 0;
    }

    8% {
        opacity: 1;
    }

    20% {
        transform: translateX(-20vw);
        opacity: 1;
    }

    80% {
        transform: translateX(120vw);
        opacity: 1;
    }

    92% {
        opacity: 0;
    }

    100% {
        transform: translateX(120vw);
        opacity: 0;
    }
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    margin: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #ffd700;
}

.feature-desc {
    font-size: 1rem;
    opacity: 0.9;
    line-height: 1.5;
}

.navigation {
    position: fixed;
    bottom: 0.75rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
    z-index: 100;
}

.nav-btn {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.slide-counter {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    width: 90%;
    max-width: 1200px;
    margin: 2rem 0;
    align-items: stretch;
    max-height: 60dvh;
}

.code-panel {
    background: rgba(0, 0, 0, 0.8);
    border-radius: 15px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    text-align: left;
    border-left: 4px solid #ffd700;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.code-header {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    font-weight: 600;
}

.css-header {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.code-language {
    color: #ffd700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.code-copy {
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.code-copy:hover {
    opacity: 1;
}

.code-content {
    padding: 1rem;
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.4;
    overflow-x: auto;
}

.code-content code {
    color: #e6e6e6;
}

/* Syntax highlighting */
.comment {
    color: #6a9955;
    font-style: italic;
}

.object {
    color: #9cdcfe;
}

.method {
    color: #dcdcaa;
}

.function {
    color: #c586c0;
}

.selector {
    color: #d7ba7d;
}

.property {
    color: #92c5f7;
}

.value {
    color: #ce9178;
}

/* Enhanced HTML syntax highlighting */
.html-tag {
    color: #569cd6;
}

.html-tag-name {
    color: #4fc1ff;
}

.html-attribute {
    color: #92c5f7;
}

.html-attribute-value {
    color: #ce9178;
}

.html-text {
    color: #d4d4d4;
}

.result-panel {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

.result-panel::before {
    content: "DEMO";
    position: absolute;
    top: 20px;
    right: -35px;
    background: linear-gradient(45deg, #ff6b6b, #ee5a5a);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    letter-spacing: 2px;
    padding: 6px 50px;
    transform: rotate(45deg);
    box-shadow: 0 2px 10px rgba(238, 90, 90, 0.4);
    z-index: 10;
}

.container-query-demo {
    width: 100%;
    height: 200px;
    border-radius: 10px;
    resize: horizontal;
    overflow: auto;
    min-width: 200px;
    max-width: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    container-type: inline-size;
    container-name: demo-container;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.responsive-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    border-radius: 8px;
    color: #333;
    transition: all 0.3s ease;
    width: 90%;
    min-height: 80px;
}

.card-content {
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
}

@container demo-container (min-width: 300px) {
    .responsive-card {
        flex-direction: row;
        justify-content: space-evenly;
        background: linear-gradient(45deg, #667eea, #764ba2);
        color: white;
    }

    .card-content {
        background: rgba(255, 255, 255, 0.2);
    }
}

.has-demo-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 300px;
}

.has-demo-form input {
    padding: 0.8rem;
    border: 2px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
}

.has-demo-form input:invalid {
    border-color: #ff4757;
}

.has-demo-form:has(input:invalid) {
    background: rgba(255, 71, 87, 0.1);
    padding: 1rem;
    border-radius: 10px;
    border: 2px solid #ff4757;
    position: relative;
}

.has-demo-form:has(input:invalid)::before {
    content: "⚠️ Invalid input detected";
    position: absolute;
    top: -14px;
    left: 1rem;
    background: #cb2ab5;
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.635);
    padding: 0.2rem 0.75rem 0.35rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(255, 71, 87, 0.3);
}

.dialog-demo {
    text-align: center;
}

.demo-button {
    background: #ffd700;
    color: #333;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.demo-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

dialog {
    border: none;
    border-radius: 15px;
    padding: 2rem 5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    min-width: 500px;
    max-width: 600px;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
}

dialog p {
    /* margin-bottom: 2rem; */
    line-height: 1.6;
}

dialog button {
    margin-top: 1rem;
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.details-demo details {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
    margin: 0.5rem 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.details-demo summary {
    cursor: pointer;
    font-weight: 600;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background 0.3s ease;
}

.details-demo summary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.file-api-demo {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.file-input {
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-input:hover {
    background: rgba(255, 255, 255, 0.2);
}

.file-display {
    width: 100%;
    max-width: 500px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 1rem;
}

.file-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.save-btn {
    background: rgba(74, 222, 128, 0.2);
    border: 1px solid rgba(74, 222, 128, 0.5);
    color: #4ade80;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.save-btn:hover {
    background: rgba(74, 222, 128, 0.3);
    border-color: #4ade80;
}

.file-content {
    width: 100%;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    padding: 1rem;
    color: white;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    resize: vertical;
    min-height: 150px;
}

.file-content:focus {
    outline: none;
    border-color: rgba(74, 222, 128, 0.5);
    box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.2);
}

.file-info {
    margin-top: 0.5rem;
    text-align: center;
    opacity: 0.8;
}

/* View Transitions Demo Styles */
.view-transition-demo {
    text-align: center;
    width: 100%;
    align-self: flex-start;
}

.demo-state {
    display: none;
}

.demo-state.active {
    display: block;
}

.transition-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    padding: 1.5rem;
    margin: 1rem 0;
    min-height: 250px;
    position: relative;
    overflow: hidden;
}

.demo-header {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
}

.demo-nav {
    font-size: 0.9rem;
    opacity: 0.8;
}

.movie-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.movie-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.movie-poster {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.movie-card h4 {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.movie-card p {
    margin: 0;
    color: #fbbf24;
    font-size: 0.8rem;
}

/* List view styles */
.movie-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.movie-item {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.movie-item .movie-poster {
    font-size: 1.5rem;
    margin-right: 1rem;
    margin-bottom: 0;
}

.movie-details {
    flex: 1;
    text-align: left;
}

.movie-details h4 {
    margin: 0 0 0.25rem 0;
    font-size: 0.9rem;
}

.movie-details p {
    margin: 0;
    color: #fbbf24;
    font-size: 0.8rem;
}


.profile-avatar {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 1.25rem;
    font-weight: bold;
    color: #4ade80;
}

.stat-label {
    font-size: 0.7rem;
    opacity: 0.8;
    margin-top: 0.15rem;
}

/* Fullscreen Image Slide Styles */
.fullscreen-image-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    overflow: hidden;
}

.fullscreen-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

/* JFokus Norse God Theme Intro Slide */
.jfokus-intro-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 2rem;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a0a2e 0%, #16213e 50%, #0f3460 100%);
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

.jfokus-intro-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(139, 69, 19, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(184, 134, 11, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 215, 0, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.rune-border {
    font-family: serif;
    font-size: 2.5rem;
    letter-spacing: 0.5rem;
    color: rgba(218, 165, 32, 0.6);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
    position: absolute;
    width: 100%;
    text-align: center;
    z-index: 1;
}

.top-runes {
    top: 1.5rem;
}

.bottom-runes {
    bottom: 1.5rem;
}

.jfokus-content {
    display: flex;
    align-items: center;
    gap: 4rem;
    z-index: 2;
}

.speaker-frame {
    position: relative;
    padding: 0.5rem;
    background: linear-gradient(135deg, #b8860b, #daa520, #ffd700, #daa520, #b8860b);
    border-radius: 50%;
    box-shadow:
        0 0 30px rgba(255, 215, 0, 0.4),
        0 0 60px rgba(218, 165, 32, 0.2),
        inset 0 0 20px rgba(255, 215, 0, 0.1);
}

.speaker-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    object-position: top center;
    border: 4px solid #1a0a2e;
}

.mjolnir-decoration {
    position: absolute;
    bottom: -10px;
    right: -10px;
    font-size: 3rem;
    filter: drop-shadow(0 0 10px rgba(255, 255, 0, 0.8));
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 10px rgba(255, 255, 0, 0.8));
    }

    50% {
        transform: scale(1.1);
        filter: drop-shadow(0 0 20px rgba(255, 255, 0, 1));
    }
}

.speaker-info {
    text-align: left;
}

.norse-title {
    font-size: 4rem;
    font-weight: 900;
    color: #ffd700;
    margin: 0 0 0.5rem 0;
    text-shadow:
        2px 2px 4px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(255, 215, 0, 0.5);
    letter-spacing: 0.05em;
}

.norse-subtitle {
    font-size: 2.5rem;
    color: #ffd700;
    margin: 0 0 2rem 0;
    font-weight: 600;
    text-shadow:
        2px 2px 4px rgba(0, 0, 0, 0.6),
        0 0 20px rgba(255, 215, 0, 0.4);
    letter-spacing: 0.02em;
}

.conference-badge {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.4), rgba(184, 134, 11, 0.3));
    border: 2px solid rgba(218, 165, 32, 0.5);
    border-radius: 0.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.badge-icon {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.badge-text {
    font-size: 1.75rem;
    font-weight: 700;
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.badge-location {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

.qr-code-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.4), rgba(184, 134, 11, 0.3));
    border: 2px solid rgba(218, 165, 32, 0.5);
    border-radius: 0.75rem;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(255, 215, 0, 0.15);
}

.qr-code-image {
    width: 140px;
    height: 140px;
    border-radius: 0.5rem;
    border: 3px solid rgba(218, 165, 32, 0.6);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.2);
}

.qr-label {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    letter-spacing: 0.02em;
}

.transition-card {
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.transition-card[data-card="1"] {
    view-transition-name: card1;
}

.transition-card[data-card="2"] {
    view-transition-name: card2;
}

.transition-card[data-card="3"] {
    view-transition-name: card3;
}

.transition-card:hover {
    transform: scale(1.05);
}

/* View Transition animations */
::view-transition-old(card1),
::view-transition-new(card1),
::view-transition-old(card2),
::view-transition-new(card2),
::view-transition-old(card3),
::view-transition-new(card3) {
    animation-duration: 0.5s;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

::view-transition-old(card1),
::view-transition-old(card2),
::view-transition-old(card3) {
    animation-name: fade-out, scale-down;
}

::view-transition-new(card1),
::view-transition-new(card2),
::view-transition-new(card3) {
    animation-name: fade-in, scale-up;
}

@keyframes fade-out {
    to {
        opacity: 0;
    }
}

@keyframes fade-in {
    from {
        opacity: 0;
    }
}

@keyframes scale-down {
    to {
        transform: scale(0.9);
    }
}

@keyframes scale-up {
    from {
        transform: scale(0.9);
    }
}

.layer-demo-btn {
    transition: all 0.3s ease;
    cursor: pointer;
    min-width: 200px;
}

.layer-demo-btn:hover {
    transform: scale(1.05);
}

.layers-demo-container {
    display: flex;
    flex-direction: column;
    align-items: center;

}

.layers-demo-controls {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.layers-demo-explanation {
    background: rgba(0, 0, 0, 0.3);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    text-align: left;
    max-width: 500px;
    border-left: 4px solid #ffd700;
}

.layers-demo-card-title {
    color: #333;
    font-size: 1.2rem;
}

.layers-demo-card-text {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.4;
}

.layers-demo-toggle-btn {
    font-size: 0.9rem;
    padding: 0.8rem 1.5rem;
}

.layers-demo-explanation-title {
    color: #ffd700;
}

.layers-demo-explanation-highlight {
    color: #ffd700;
}

/* CSS Cascade Layers Demo - Define layer order */
@layer base, background, components, utilities;

/* Background layer - lowest priority */
@layer background {
    .layer-demo-card {
        background: #e3f2fd;
        border: 2px solid #90caf9;
        padding: 2rem;
        border-radius: 12px;
        max-width: 350px;
        margin: 1.5rem auto 2rem auto;
        transition: all 0.3s ease;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
}

/* Components layer - higher priority */
@layer components {
    .layer-button {
        background: #4caf50;
        color: white;
        padding: 1rem 2rem;
        border-radius: 8px;
        border: none;
        cursor: pointer;
        font-weight: 600;
        font-size: 1rem;
        transition: all 0.3s ease;
        margin: 0.5rem 0;
        display: inline-block;
    }

    .layer-button:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    }
}

/* Utilities layer - highest priority */
@layer utilities {
    .highlight-box {
        background: #ff5722;
        transform: scale(1.05);
        box-shadow: 0 8px 24px rgba(255, 87, 34, 0.4);
    }

    .highlight-btn {
        background: #e91e63;
        color: #fff;
        box-shadow: 0 4px 15px rgba(233, 30, 99, 0.4);
        transform: scale(1.1);
    }
}

/* Intersection Observer Status */
.intersection-status {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.status-indicator {
    background: linear-gradient(45deg, #8b5cf6, #a855f7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(139, 92, 246, 0.8);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
        transform: scale(1);
    }

    50% {
        box-shadow: 0 6px 25px rgba(139, 92, 246, 0.5);
        transform: scale(1.02);
    }
}

/* Enhanced Intersection Demo Container */
.intersection-demo {
    height: 200px;
    overflow-y: scroll;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.1));
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 15px;
    padding: 1.5rem;
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow:
        0 8px 32px rgba(139, 92, 246, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* Scroll Items with Epic Effects */
.scroll-item {
    height: 100px;
    margin: 1.5rem 1rem;
    /* Added horizontal margin for better spacing */
    background: linear-gradient(45deg, #1f2937, #374151);
    border: 2px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    position: relative;
    overflow: hidden;
    padding: 0 1rem;
    /* Added internal padding for content spacing */

    /* Initial hidden state - dramatic */
    opacity: 0;
    transform: translateX(-100px) scale(0.8) rotateY(-15deg);
    filter: blur(5px) grayscale(100%);

    /* Epic transition */
    transition: all 1.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Item Content Layout */
.item-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 2;
    position: relative;
    width: 100%;
    padding-right: 6rem;
    /* Make space for the badge */
}

.item-emoji {
    font-size: 2rem;
    filter: grayscale(100%);
    transition: all 0.8s ease;
    flex-shrink: 0;
    /* Prevent emoji from shrinking */
}

.item-text {
    font-size: 1.1rem;
    color: #9ca3af;
    transition: all 0.8s ease;
    flex: 1;
    /* Allow text to take available space */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.visibility-badge {
    position: absolute;
    bottom: -1.5rem;
    right: 0rem;
    transform: translateY(-50%);
    background: linear-gradient(45deg, #ef4444, #dc2626);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(239, 68, 68, 0.4);
    transition: all 0.8s ease;
    z-index: 3;
    min-width: 60px;
    text-align: center;
}

/* Visible State - EPIC! */
.scroll-item.visible {
    opacity: 1;
    transform: translateX(0) scale(1) rotateY(0deg);
    filter: blur(0) grayscale(0%);
    background: linear-gradient(45deg, #8b5cf6, #a855f7, #c084fc);
    border-color: rgba(139, 92, 246, 0.8);
    box-shadow:
        0 10px 30px rgba(139, 92, 246, 0.4),
        0 0 50px rgba(139, 92, 246, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.scroll-item.visible .item-emoji {
    filter: grayscale(0%);
    transform: scale(1.2) rotate(360deg);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
}

.scroll-item.visible .item-text {
    color: white;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.6);
    transform: scale(1.05);
}

.scroll-item.visible .visibility-badge {
    background: linear-gradient(45deg, #10b981, #059669);
    box-shadow: 0 2px 15px rgba(16, 185, 129, 0.5);
}

/* Demo Instruction Styling */
.demo-instruction {
    font-size: 0.95rem;
    margin-top: 1rem;
    color: #a855f7;
    text-align: center;
    font-weight: 600;
    text-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
    animation: instruction-pulse 3s infinite;
}

@keyframes instruction-pulse {

    0%,
    100% {
        opacity: 0.8;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.02);
    }
}

.big-number {
    font-size: 8rem;
    font-weight: 900;
    color: #ffd700;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    width: 100%;
    max-width: 900px;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    color: #ffd700;
    display: block;
}

.stat-label {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.code-snippet {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 10px;
    padding: 1.5rem;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 1.1rem;
    text-align: left;
    margin: 2rem 0;
    border-left: 4px solid #ffd700;
    max-width: 600px;
}

.timeline {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 1000px;
    margin: 2rem 0;
}

.timeline-item {
    flex: 1;
    text-align: center;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -50%;
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
}

.timeline-number {
    background: #ffd700;
    color: #333;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-weight: 900;
    font-size: 1.2rem;
}

.final-slide {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

.highlight {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
}

/* Presenter slide styles */
.presenter-slide {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.presenter-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: clamp(2rem, 5vw, 6rem);
    max-width: min(90vw, 1200px);
    width: 100%;
    align-items: center;
    padding: 0 2rem;
}

.presenter-image {
    text-align: center;
}

.profile-pic {
    width: clamp(250px, 25vw, 400px);
    height: clamp(250px, 25vw, 400px);
    border-radius: 50%;
    object-fit: cover;
    border: clamp(2px, 0.3vw, 6px) solid #ffd700;
    box-shadow: 0 0 clamp(15px, 2vw, 30px) rgba(255, 215, 0, 0.3);
    transition: transform 0.3s ease;
}

.profile-pic:hover {
    transform: scale(1.05);
}

.presenter-info {
    text-align: left;
}

.presenter-name {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    background: linear-gradient(45deg, #fff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: clamp(0.5rem, 1vw, 1rem);
    line-height: 1.1;
}

.presenter-title {
    font-size: clamp(1rem, 2.5vw, 2rem);
    color: #ffd700;
    margin-bottom: clamp(1rem, 2vw, 2.5rem);
    font-weight: 600;
}

.presenter-badges {
    display: flex;
    gap: clamp(0.5rem, 1vw, 1.5rem);
    margin-bottom: clamp(1rem, 2vw, 2.5rem);
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: clamp(0.3rem, 0.5vw, 0.8rem);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: clamp(0.5rem, 1vw, 1rem) clamp(0.8rem, 1.5vw, 2rem);
    border-radius: clamp(15px, 2vw, 30px);
    border: clamp(1px, 0.1vw, 2px) solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 clamp(4px, 0.8vw, 12px) clamp(16px, 3vw, 40px) rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    font-size: clamp(0.8rem, 1.2vw, 1.1rem);
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.badge:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.5),
        inset 0 -1px 0 rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.2);
}

.badge.aurelia {
    background: linear-gradient(135deg,
            rgba(237, 20, 61, 0.25),
            rgba(255, 107, 107, 0.25),
            rgba(255, 255, 255, 0.1));
    border-color: rgba(237, 20, 61, 0.4);
    box-shadow:
        0 8px 32px rgba(237, 20, 61, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(237, 20, 61, 0.1);
}

.badge.aurelia:hover {
    background: linear-gradient(135deg,
            rgba(237, 20, 61, 0.35),
            rgba(255, 107, 107, 0.35),
            rgba(255, 255, 255, 0.15));
    border-color: rgba(237, 20, 61, 0.5);
    box-shadow:
        0 12px 40px rgba(237, 20, 61, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.5),
        inset 0 -1px 0 rgba(237, 20, 61, 0.2);
}

.badge.mvp {
    background: linear-gradient(135deg,
            rgba(0, 120, 215, 0.25),
            rgba(70, 130, 255, 0.25),
            rgba(255, 255, 255, 0.1));
    border-color: rgba(0, 120, 215, 0.4);
    box-shadow:
        0 8px 32px rgba(0, 120, 215, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(0, 120, 215, 0.1);
}

.badge.mvp:hover {
    background: linear-gradient(135deg,
            rgba(0, 120, 215, 0.35),
            rgba(70, 130, 255, 0.35),
            rgba(255, 255, 255, 0.15));
    border-color: rgba(0, 120, 215, 0.5);
    box-shadow:
        0 12px 40px rgba(0, 120, 215, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.5),
        inset 0 -1px 0 rgba(0, 120, 215, 0.2);
}

.badge-icon {
    font-size: clamp(1rem, 1.5vw, 1.5rem);
}

.badge-text {
    font-weight: 600;
    white-space: nowrap;
}

.presenter-bio {
    font-size: clamp(1rem, 1.8vw, 1.4rem);
    line-height: 1.6;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .presenter-content {
        grid-template-columns: 1fr;
        gap: clamp(1rem, 3vw, 2rem);
        text-align: center;
        padding: 0 1rem;
    }

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

    .profile-pic {
        width: clamp(150px, 35vw, 250px);
        height: clamp(150px, 35vw, 250px);
    }

    .presenter-name {
        font-size: clamp(1.5rem, 6vw, 2.5rem);
    }

    .presenter-badges {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .presenter-badges {
        flex-direction: column;
        align-items: center;
    }

    .badge {
        width: fit-content;
        min-width: 200px;
        justify-content: center;
    }
}

/* Thank You slide styles */
.connect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: clamp(3rem, 6vw, 5rem);
    width: 100%;
    max-width: 900px;
    margin: clamp(2rem, 4vw, 3rem) 0;
}

.qr-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 25px;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    padding: clamp(1.5rem, 3vw, 2rem);
    text-align: center;
}

.qr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.qr-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow:
        0 15px 45px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.5),
        inset 0 -1px 0 rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.2);
}

.qr-code {
    margin-bottom: clamp(1rem, 2vw, 1.5rem);
}

.qr-code img {
    width: clamp(120px, 15vw, 150px);
    height: clamp(120px, 15vw, 150px);
    border-radius: 15px;
    background: white;
    padding: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.qr-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.qr-icon {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.qr-text {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    font-weight: 600;
    color: white;
}

.thank-you-message {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-weight: 600;
    margin: clamp(2rem, 4vw, 3rem) 0 1rem 0;
    color: #ffd700;
}

/* Gradient background classes for transition cards */
.gradient-blue-cyan {
    background: linear-gradient(45deg, #4facfe, #00f2fe);
}

.gradient-red-orange {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
}

.gradient-teal-green {
    background: linear-gradient(45deg, #4ecdc4, #44a08d);
}

.gradient-blue-lime {
    background: linear-gradient(45deg, #45b7d1, #96c93d);
}

.gradient-aqua-pink {
    background: linear-gradient(45deg, #a8edea, #fed6e3);
}

.gradient-peach-orange {
    background: linear-gradient(45deg, #ffecd2, #fcb69f);
}

/* Hero transition card styles */
.hero-transition-card {
    width: 100%;
    max-width: 400px;
    height: 300px;
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.hero-transition-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hero-transition-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.hero-transition-card:hover::before {
    opacity: 1;
}

.hero-emoji {
    font-size: 6rem;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
    view-transition-name: hero-emoji;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    view-transition-name: hero-title;
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    view-transition-name: hero-subtitle;
}

/* View transition animations for hero card */
::view-transition-old(hero-emoji),
::view-transition-new(hero-emoji) {
    animation-duration: 0.6s;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

::view-transition-old(hero-emoji) {
    animation-name: emoji-scale-out, emoji-rotate-out;
}

::view-transition-new(hero-emoji) {
    animation-name: emoji-scale-in, emoji-rotate-in;
}

@keyframes emoji-scale-out {
    to {
        transform: scale(0.8) rotate(-10deg);
        opacity: 0;
    }
}

@keyframes emoji-scale-in {
    from {
        transform: scale(1.2) rotate(10deg);
        opacity: 0;
    }

    to {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

@keyframes emoji-rotate-out {
    to {
        transform: rotate(-180deg);
    }
}

@keyframes emoji-rotate-in {
    from {
        transform: rotate(180deg);
    }

    to {
        transform: rotate(0deg);
    }
}

/* CSS Nesting Demo Styles */
.nesting-demo-container {
    text-align: center;
}

.nesting-demo-card {
    background: white;
    color: #333;
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin: 1rem auto;
    max-width: 300px;
    transition: all 0.3s ease;
    cursor: pointer;

    & .title {
        font-size: 1.5rem;
        font-weight: bold;
        margin-bottom: 0.5rem;
    }

    & .content {
        color: #666;
        line-height: 1.6;
    }

    &:hover {
        transform: translateY(-2px) scale(1.5);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }

    @media (max-width: 768px) {
        padding: 0.5rem;

        & .title {
            font-size: 1.2rem;
        }
    }
}

.nesting-benefits {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.nesting-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Progress Demo Styles */
.progress-demo {
    padding: 1rem;
}

.demo-section {
    margin: 1rem 0;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.demo-section h3 {
    margin: 0 0 0.5rem 0;
    color: #4ECDC4;
    font-size: 1rem;
}

.progress-item {
    display: flex;
    align-items: center;
    margin: 0.5rem 0;
    gap: 0.5rem;
}

.progress-item label {
    min-width: 100px;
    font-weight: 600;
    font-size: 0.9rem;
}

.progress-item progress {
    flex: 1;
    height: 20px;
    border-radius: 10px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
}

.progress-item progress::-webkit-progress-bar {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.progress-item progress::-webkit-progress-value {
    background: linear-gradient(90deg, #4ECDC4, #45B7D1);
    border-radius: 10px;
    transition: width 0.3s ease;
}

.progress-item progress::-moz-progress-bar {
    background: linear-gradient(90deg, #4ECDC4, #45B7D1);
    border-radius: 10px;
}

.progress-item .progress-text {
    min-width: 60px;
    font-weight: 600;
    color: #4ECDC4;
}

.indeterminate {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.indeterminate::-webkit-progress-bar {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.indeterminate::-webkit-progress-value {
    background: linear-gradient(90deg, transparent, #4ECDC4, transparent);
    background-size: 200% 100%;
    animation: indeterminateAnimation 2s infinite linear;
    border-radius: 10px;
}

.indeterminate::-moz-progress-bar {
    background: linear-gradient(90deg, transparent, #4ECDC4, transparent);
    background-size: 200% 100%;
    animation: indeterminateAnimation 2s infinite linear;
    border-radius: 10px;
}

/* For browsers that don't support ::-webkit-progress-value */
.indeterminate:not([value]) {
    background: linear-gradient(90deg, transparent, #4ECDC4, transparent);
    background-size: 200% 100%;
    animation: indeterminateAnimation 2s infinite linear;
}

@keyframes indeterminateAnimation {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}



.demo-info {
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    border-left: 4px solid #4ECDC4;
    font-size: 0.9rem;
}

.demo-info p {
    margin: 0;
    font-size: 0.95rem;
}

/* common demo explanation box */
.demo-explanation {
    background: rgba(0, 0, 0, 0.3);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    text-align: left;
    max-width: 500px;
    border-left: 4px solid #ffd700;

    .highlight {
        color: #ffd700;
    }
}

/* summary slide */
.demo-details {
    margin: 0.75rem 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    width: 535px;
    max-height: 5.75rem;
    /* Collapsed: summary height with padding */
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
}

.demo-details[open] {
    max-height: 500px;
    /* Expanded: enough for content */
}

.demo-details summary {
    padding: 1rem;
    cursor: pointer;
    font-weight: 600;
    border-radius: 8px;
    transition: background-color 0.2s ease;
    text-align: left;
    list-style: none;
}

.demo-details summary::-webkit-details-marker {
    display: none;
}

.demo-details summary::before {
    content: "▶";
    display: inline-block;
    margin-right: 0.5rem;
    transition: transform 0.3s ease;
}

.demo-details[open] summary::before {
    transform: rotate(90deg);
}

.demo-details summary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.demo-details[open] summary {
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px 8px 0 0;
}

.demo-details p,
.demo-details ul {
    padding: 1rem;
    margin: 0;
}

.demo-details code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
}

/* CSS if() Function Demo Styles */
.if-function-toggle {
    background: linear-gradient(45deg, #8b5cf6, #06b6d4);
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
    margin-bottom: 1.5rem;
}

.if-function-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.if-function-card {
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid #fbbf24;
    transition: all 0.5s ease;
    text-align: center;
    font-weight: bold;
    margin: 1.5rem 0;
    background: linear-gradient(135deg, #8b5cf6, #06b6d4);
    color: white;
    position: relative;
}

.if-function-card[data-theme="dark"] {
    background: linear-gradient(135deg, #1f2937, #374151);
    color: #f1f5f9;
    border-color: #8b5cf6;
}

.if-function-card[data-theme="light"] {
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    color: #1e293b;
    border-color: #06b6d4;
}

.if-card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.if-future-badge {
    background: linear-gradient(45deg, #ef4444, #f97316);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: bold;
    animation: pulse 2s infinite;
    position: absolute;
    top: -8px;
    right: 1rem;
}

/* ============================================
   Stylable Select Slide Styles
   ============================================ */

.stylable-select-demo {
    text-align: center;
    width: 100%;
}

.stylable-select-demo .demo-title {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: #ffd700;
}

.select-demo-section {
    margin: 1.25rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.select-label {
    font-weight: 600;
    font-size: 0.95rem;
    min-width: 140px;
    text-align: right;
}

/* Base select styling with appearance: base-select */
.styled-select,
.styled-select::picker(select) {
    appearance: base-select;
}

.styled-select {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.65rem 1.25rem;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    cursor: pointer;
    min-width: 180px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.styled-select:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    border-color: rgba(255, 255, 255, 0.5);
}

.styled-select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.5);
}

.styled-select:open {
    box-shadow: 0 0 0 3px #ffd700;
}

/* Style the dropdown picker */
.styled-select::picker(select) {
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border: 2px solid rgba(102, 126, 234, 0.4);
    border-radius: 12px;
    padding: 0.5rem;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.3);
    margin-top: 0.5rem;
}

/* Style options */
.styled-select option {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin: 0.25rem;
    transition: all 0.2s ease;
    cursor: pointer;
    color: #1e293b;
}

.styled-select option:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.styled-select option:checked {
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #1e293b;
}

/* Style the checkmark indicator */
.styled-select option::checkmark {
    content: "✓ ";
    color: #667eea;
}

/* Style optgroups */
.styled-select optgroup {
    font-weight: 700;
    color: #475569;
    font-size: 0.85rem;
    padding: 0.5rem 0.75rem;
}

/* Style hr separators */
.styled-select hr {
    border: none;
    border-top: 1px solid rgba(102, 126, 234, 0.3);
    margin: 0.5rem 0;
}

/* Country select variant */
.country-select {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.country-select:hover {
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

/* Theme select variants */
.theme-select {
    transition: all 0.4s ease;
}

.theme-select.purple-theme {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.theme-select.ocean-theme {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.theme-select.sunset-theme {
    background: linear-gradient(135deg, #f97316, #ea580c);
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.theme-select.forest-theme {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.stylable-select-demo .demo-explanation {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 1.5rem;
    text-align: left;
    font-size: 0.85rem;
    line-height: 1.7;
}

.stylable-select-demo .demo-explanation code {
    background: rgba(255, 215, 0, 0.2);
    color: #ffd700;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
}

/* ============================================
   Background & Utility APIs Slide Styles
   ============================================ */

.utility-apis-demo {
    text-align: center;
    width: 100%;
}

.utility-apis-demo .demo-title {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: #ffd700;
}

.api-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
    padding: 0.25rem;
}

.api-feature-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    padding: 0.6rem 0.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.api-feature-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 215, 0, 0.4);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.api-feature-card .api-icon {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
}

.api-feature-card h5 {
    font-size: 0.85rem;
    font-weight: 700;
    margin: 0 0 0.25rem 0;
    color: #fff;
}

.api-feature-card p {
    font-size: 0.65rem;
    line-height: 1.3;
    margin: 0 0 0.35rem 0;
    opacity: 0.85;
}

.api-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-size: 0.55rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================
   EyeDropper API Slide Styles
   ============================================ */

.eyedropper-demo {
    text-align: center;
    width: 100%;
}

.eyedropper-demo .demo-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #ffd700;
}

.color-palette-row {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.palette-color {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.2s ease;
}

.palette-color:hover {
    transform: scale(1.15);
    border-color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.eyedropper-button {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    color: white;
    padding: 0.85rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    margin-bottom: 1.25rem;
}

.eyedropper-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

.eyedropper-button:active {
    transform: translateY(-1px);
}

.picked-color-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
}

.picked-color-swatch {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    border: 3px solid rgba(255, 255, 255, 0.4);
    background-color: #444;
    transition: all 0.3s ease;
}

.picked-color-swatch.has-color {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.picked-color-info {
    text-align: left;
}

.picked-color-label {
    display: block;
    font-size: 0.75rem;
    opacity: 0.7;
    margin-bottom: 0.25rem;
}

.picked-color-value {
    font-family: 'Fira Code', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffd700;
}

.color-preview-boxes {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.color-preview-box {
    width: 80px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.eyedropper-note {
    font-size: 0.8rem;
    opacity: 0.8;
    margin: 0;
}

/* ============================================
   Act IV: AI-Supported Coding - Scary Theme
   ============================================ */

.act4-intro {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #000;
    overflow: hidden;
}

.act4-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(255, 0, 0, 0.03) 2px,
            rgba(255, 0, 0, 0.03) 4px);
    pointer-events: none;
    animation: scanlines 0.1s linear infinite;
}

@keyframes scanlines {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(4px);
    }
}

.act-warning-banner {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(90deg, transparent, rgba(255, 0, 0, 0.3), transparent);
    padding: 0.5rem 2rem;
    margin-bottom: 1rem;
    animation: warningPulse 1.5s ease-in-out infinite;
}

@keyframes warningPulse {

    0%,
    100% {
        opacity: 0.7;
    }

    50% {
        opacity: 1;
    }
}

.warning-icon {
    font-size: 1.5rem;
    animation: warningBlink 0.5s ease-in-out infinite;
}

@keyframes warningBlink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.warning-text {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: #ff3333;
    text-transform: uppercase;
}

.act4-intro .act-title {
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 900;
    color: #ff0040;
    text-shadow:
        0 0 10px #ff0040,
        0 0 20px #ff0040,
        0 0 40px #ff0040,
        0 0 80px #ff0040;
    margin: 0.5rem 0;
    position: relative;
}

.glitch-text {
    animation: glitch 2s infinite;
}

@keyframes glitch {

    0%,
    90%,
    100% {
        transform: translate(0);
        text-shadow:
            0 0 10px #ff0040,
            0 0 20px #ff0040,
            0 0 40px #ff0040;
    }

    92% {
        transform: translate(-5px, 2px);
        text-shadow:
            -3px 0 #00ffff,
            3px 0 #ff00ff;
    }

    94% {
        transform: translate(5px, -2px);
        text-shadow:
            3px 0 #00ffff,
            -3px 0 #ff00ff;
    }

    96% {
        transform: translate(-3px, 0);
    }

    98% {
        transform: translate(3px, 0);
    }
}

.robot-container {
    position: relative;
    margin: 1rem 0;
}

.robot-emoji {
    font-size: 8rem;
    display: block;
    filter: drop-shadow(0 0 30px rgba(255, 0, 64, 0.8));
    animation: robotFloat 3s ease-in-out infinite, robotGlow 2s ease-in-out infinite;
}

@keyframes robotFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

@keyframes robotGlow {

    0%,
    100% {
        filter: drop-shadow(0 0 30px rgba(255, 0, 64, 0.8));
    }

    50% {
        filter: drop-shadow(0 0 50px rgba(255, 0, 64, 1)) drop-shadow(0 0 80px rgba(255, 0, 64, 0.5));
    }
}

.robot-eyes {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 20px;
    pointer-events: none;
}

.robot-eyes::before,
.robot-eyes::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background: #ff0040;
    border-radius: 50%;
    animation: eyeGlow 1s ease-in-out infinite alternate;
    box-shadow: 0 0 10px #ff0040, 0 0 20px #ff0040;
}

.robot-eyes::before {
    left: 8px;
}

.robot-eyes::after {
    right: 8px;
}

@keyframes eyeGlow {
    0% {
        opacity: 0.6;
        transform: scale(0.8);
    }

    100% {
        opacity: 1;
        transform: scale(1.2);
    }
}

.act4-intro .act-subtitle {
    font-size: clamp(1.5rem, 5vw, 3rem);
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 8px;
    margin: 0.5rem 0;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.scary-text {
    animation: textFlicker 4s linear infinite;
}

@keyframes textFlicker {

    0%,
    100% {
        opacity: 1;
    }

    92% {
        opacity: 1;
    }

    93% {
        opacity: 0.3;
    }

    94% {
        opacity: 1;
    }

    96% {
        opacity: 0.5;
    }

    97% {
        opacity: 1;
    }
}

.ominous-text {
    font-size: 1.2rem;
    font-style: italic;
    color: rgba(255, 255, 255, 0.7);
    margin: 1rem 0;
    max-width: 500px;
    text-align: center;
}

.threat-level {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1rem 2rem;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 0, 64, 0.3);
    border-radius: 8px;
}

.threat-label {
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    color: #ff3333;
    letter-spacing: 2px;
}

.threat-bar {
    width: 150px;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid rgba(255, 0, 64, 0.5);
}

.threat-fill {
    height: 100%;
    width: 75%;
    background: linear-gradient(90deg, #00ff00, #ffff00, #ff0000);
    border-radius: 6px;
    animation: threatPulse 2s ease-in-out infinite;
}

@keyframes threatPulse {

    0%,
    100% {
        opacity: 0.8;
    }

    50% {
        opacity: 1;
    }
}

.threat-status {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    color: #ffff00;
    letter-spacing: 1px;
    animation: statusBlink 1s ease-in-out infinite;
}

@keyframes statusBlink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.binary-rain {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Ctext x='10' y='20' fill='%2300ff00' font-family='monospace' font-size='12'%3E01001%3C/text%3E%3Ctext x='50' y='40' fill='%2300ff00' font-family='monospace' font-size='12'%3E10110%3C/text%3E%3Ctext x='20' y='60' fill='%2300ff00' font-family='monospace' font-size='12'%3E11001%3C/text%3E%3Ctext x='60' y='80' fill='%2300ff00' font-family='monospace' font-size='12'%3E00101%3C/text%3E%3C/svg%3E");
    animation: binaryScroll 20s linear infinite;
}

@keyframes binaryScroll {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 0 1000px;
    }
}