:root {
    --brand: #E50914;
    --brand-hover: #fa454b;
    --brand-visited: #E50914;

    --bg-main: #121212;
    --bg-surface: #161b22;

    --bg-item: #30363d;
    --bg-item-hover: #484f58;
    
    --text-1: #e0e0e0;
    --text-2: #a5a9ad;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-1);
    min-height: 100vh;
    padding: 40px;
}

.page-layout {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

/* Header */
.header-container {
    display: flex;
    gap: 12px;
    margin-bottom: 1rem;
}

.header-container .header-logo {
    height: 2.8rem;
    width: auto;
    filter: brightness(0) invert(1);
}

.header-container h1 {
    font-size: 2rem;
    font-weight: 500;
    margin: 0;
    color: white;
    letter-spacing: -0.02em;
}

/* Project Summary Section */
.project-description {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
}

.project-description p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-2);
}

.project-description a {
    color: var(--brand);
    transition: all 0.2s ease;
}
.project-description a:hover {
    color: var(--brand-hover);
}
.project-description a:visited {
    color: var(--brand-visited);
}

/* Screenshot carousel */
.screenshot-showcase {
    width: 100%;
    margin-top: 2rem;
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.screenshot-showcase h2 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-2);
    margin-bottom: 1rem;
}

/* Horizontal Scroll Container */
.carousel-track {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 12px; /* Space for custom scrollbar */
    /* scroll-snap-type: x mandatory; */
    -webkit-overflow-scrolling: touch;
}

/* Custom Minimal Scrollbar */
.carousel-track::-webkit-scrollbar {
    height: 6px;
}

.carousel-track::-webkit-scrollbar-track {
    background: var(--bg-surface);
    border-radius: 4px;
}

.carousel-track::-webkit-scrollbar-thumb {
    background: var(--bg-item);
    border-radius: 4px;
}

.carousel-track::-webkit-scrollbar-thumb:hover {
    background: var(--bg-item-hover);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--bg-item);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: background-color 0.25s ease, width 0.25s ease, border-radius 0.25s ease;
}

.dot:hover {
    background-color: var(--text-2);
}

/* Active indicator converts to a rounded pill shape */
.dot.active {
    background-color: var(--brand);
    width: 22px;
    border-radius: 4px;
}

/* Demo Card Item */
.demo-card {
    flex: 0 0 280px; /* Fixed card width in horizontal row */
    background-color: var(--bg-surface);
    border: 1px solid var(--bg-item);
    border-radius: 8px;
    overflow: hidden;
    /* scroll-snap-align: start; */
    display: flex;
    flex-direction: column;
}
.demo-card:hover {
    border-color: var(--brand-hover);
}
.demo-card.expanded {
    border-color: var(--brand);
}

/* Demo card media */
.demo-card .card-media {
    width: 100%;
    max-height: 160px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--bg-item);
    overflow: hidden;
    transition: all 0.35s ease;
}
.demo-card.expanded .card-media {
    max-height: 800px;
}

.demo-card .card-media-contents {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transform: translateY(-100px) scale(0.95);
    filter: blur(4px);
    transition: all 0.35s ease;
}
.demo-card:hover .card-media-contents {
    transform: translateY(-80px) scale(1);
    filter: blur(0);
}
.demo-card.expanded .card-media-contents {
    transform: translateY(0px) scale(1);
    filter: blur(0);
}
.card-media-contents img {
    width: 100%;
    height: auto;
}

/* Demo card captions */
.demo-card .card-caption {
    padding: 12px 14px;
    text-align: left;
}

.demo-card .card-caption h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 4px;
}

.demo-card .card-features {
    list-style: none;
    color: var(--text-2);
    padding: 0;
    margin-top: 8px;
    transition: all 0.35s ease;
}
.demo-card:hover .card-features {
    color: var(--text-1);
}
.demo-card.expanded .card-features {
    color: var(--text-1);
}

.demo-card .card-features li {
    font-size: 0.8rem;
    line-height: 1.5;
    position: relative;
    padding-left: 14px;
}

/* Custom subtle bullet indicator */
.demo-card .card-features li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 0.7em;
    width: 4px;
    height: 4px;
    background-color: var(--text-2);
    border-radius: 50%;
    transition: all 0.35s ease;
}
.demo-card:hover .card-features li::before {
    background-color: var(--brand-hover);
}
.demo-card.expanded .card-features li::before {
    background-color: var(--brand);
}

/* Technical Summary Section */
.technical-description {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    color: var(--text-2);
}

.technical-description h2 {
    font-size: 1.4rem;
    font-weight: 500;
    margin: 0;
    letter-spacing: -0.02em;
}
.technical-description h3 {
    font-size: 1.2rem;
    font-weight: 500;
    margin: 0;
    letter-spacing: -0.02em;
}

.technical-description p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-2);
}

.technical-description a {
    color: var(--brand);
    transition: all 0.2s ease;
}
.technical-description a:hover {
    color: var(--brand-hover);
}
.technical-description a:visited {
    color: var(--brand-visited);
}