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

body {
    background: linear-gradient(135deg, #0a0a1a 0%, #0d1b2a 50%, #1b263b 100%);
    min-height: 100vh;
    font-family: Tahoma, sans-serif;
    color: white;
    padding: 20px;
    padding-bottom: 60px;
}

/* Home button - consistent with other pages */
.home-button-container {
    position: fixed;
    top: 10px;
    left: 10px;
    display: flex;
    align-items: center;
    z-index: 100;
}

.home-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 8px;
}

.spin-on-hover {
    transition: transform 0.5s ease-in-out;
    width: 60px;
    height: 60px;
    border-radius: 30px;
}

.hover-text {
    font-size: 14px;
    color: white;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.home-link:hover .hover-text {
    opacity: 1;
}

.home-link:hover .spin-on-hover {
    transform: rotate(-360deg);
}

/* Main content */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding-top: 60px;
}

/* Hero section */
.hero {
    text-align: center;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 5rem;
    margin-bottom: 10px;
    background: linear-gradient(90deg, #4fc3f7, #81d4fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: 1.4rem;
    color: #b0bec5;
    margin-bottom: 30px;
}

.hero .role {
    font-size: 1rem;
    color: #80cbc4;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.play-button {
    display: inline-block;
    background: linear-gradient(90deg, #1976d2, #2196f3);
    color: white;
    padding: 15px 40px;
    font-size: 1.2rem;
    text-decoration: none;
    border-radius: 30px;
    transition: transform 0.3s, box-shadow 0.3s;
    font-family: Tahoma, sans-serif;
}

.play-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(33, 150, 243, 0.4);
}

/* Terminal/Code Window */
.terminal-window {
    background: #1a1b26;
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(79, 195, 247, 0.1);
    margin-top: 25px;
}

.terminal-header {
    background: linear-gradient(180deg, #2d2f3d 0%, #252734 100%);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.terminal-buttons {
    display: flex;
    gap: 8px;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-btn.red { background: #ff5f56; }
.terminal-btn.yellow { background: #ffbd2e; }
.terminal-btn.green { background: #27ca40; }

.terminal-title {
    color: #7a7f93;
    font-size: 0.85rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    margin-left: auto;
    margin-right: auto;
}

.terminal-body {
    padding: 24px 28px;
    overflow-x: auto;
}

.markdown-content {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.7;
    color: #a9b1d6;
    white-space: pre-wrap;
    margin: 0;
}

/* Markdown syntax highlighting */
.md-h2 {
    color: #7aa2f7;
    font-weight: bold;
}

.md-bold {
    color: #bb9af7;
    font-weight: bold;
}

.md-italic {
    color: #9ece6a;
    font-style: italic;
}

.md-code {
    background: rgba(122, 162, 247, 0.15);
    color: #7dcfff;
    padding: 2px 6px;
    border-radius: 4px;
}

.md-link {
    color: #73daca;
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 3px;
    transition: color 0.2s, text-decoration-color 0.2s;
}

.md-link:hover {
    color: #9ece6a;
    text-decoration-style: solid;
}

.md-bullet {
    color: #f7768e;
}

.md-comment {
    color: #565f89;
    font-style: italic;
}

.md-blockquote {
    color: #9aa5ce;
    border-left: 3px solid #565f89;
    padding-left: 12px;
    display: block;
}

.md-divider {
    color: #3b4261;
    display: block;
    margin: 8px 0;
}

.md-code-block {
    display: block;
    background: rgba(0, 0, 0, 0.3);
    padding: 4px 12px;
    margin: 4px 0;
    border-radius: 4px;
    border-left: 3px solid #3d59a1;
}

.md-error {
    color: #f7768e;
}

.md-success {
    color: #9ece6a;
}

.md-checkbox {
    color: #9ece6a;
}

/* Section styling */
.section {
    margin-bottom: 60px;
}

.section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #4fc3f7;
    border-bottom: 2px solid #4fc3f7;
    padding-bottom: 10px;
    display: inline-block;
}

.section > p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #cfd8dc;
    max-width: 900px;
}

.section > p a {
    color: #4fc3f7;
    text-decoration: none;
    border-bottom: 1px solid rgba(79, 195, 247, 0.4);
    transition: border-color 0.2s;
}

.section > p a:hover {
    border-color: #4fc3f7;
}

/* UX Feature sections */
.ux-feature {
    margin-bottom: 40px;
    padding: 35px;
    background: linear-gradient(145deg, rgba(15, 15, 20, 0.8), rgba(10, 10, 15, 0.6));
    border-radius: 16px;
    border: 1px solid rgba(79, 195, 247, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.ux-feature .hci-principle {
    display: inline-block;
    font-size: 0.75rem;
    color: #80cbc4;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
    padding: 6px 14px;
    background: rgba(128, 203, 196, 0.1);
    border-radius: 20px;
    border: 1px solid rgba(128, 203, 196, 0.25);
}

.ux-feature h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #81d4fa;
}

.ux-feature p {
    font-size: 1.05rem;
    color: #b0bec5;
    line-height: 1.7;
    margin-bottom: 20px;
    max-width: 900px;
}

.ux-feature img,
.ux-feature video {
    max-width: 85%;
    height: auto;
    border-radius: 12px;
    border: 1px solid rgba(79, 195, 247, 0.2);
    display: block;
    margin: 30px auto 0;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(79, 195, 247, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ux-feature img:hover,
.ux-feature video:hover {
    transform: scale(1.02);
    box-shadow:
        0 8px 30px rgba(0, 0, 0, 0.6),
        0 0 50px rgba(79, 195, 247, 0.15);
}

/* Side-by-side layout variant */
.ux-feature.ux-feature--image-right {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: 40px;
}

.ux-feature--image-right .ux-feature__content {
    flex: 1 1 0;
    min-width: 0;
}

.ux-feature--image-right .ux-feature__media {
    flex: 0 0 auto;
}

.ux-feature--image-right .ux-feature__media img {
    max-width: 300px;
    width: 300px;
    margin: 0;
}

@media (max-width: 768px) {
    .ux-feature.ux-feature--image-right {
        flex-direction: column;
    }

    .ux-feature--image-right .ux-feature__media img {
        max-width: 85%;
        width: auto;
        margin: 20px auto 0;
    }
}

/* Text-only variant (no image) */
.ux-feature--text-only {
    padding: 30px 35px;
}

.ux-feature--text-only p {
    margin-bottom: 0;
}

/* Links section */
.links-section {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.link-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 1rem;
    transition: transform 0.2s, background 0.2s;
}

.link-button.primary {
    background: #1976d2;
    color: white;
}

.link-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #81d4fa;
    border: 1px solid rgba(129, 212, 250, 0.3);
}

.link-button:hover {
    transform: translateY(-2px);
}

.link-button.primary:hover {
    background: #1565c0;
}

.link-button.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Floating play button */
.floating-play-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 14px 24px;
    background: linear-gradient(135deg, #1976d2, #2196f3);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    font-family: Tahoma, sans-serif;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(33, 150, 243, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, box-shadow 0.3s ease;
    z-index: 100;
}

.floating-play-button.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.floating-play-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(33, 150, 243, 0.6);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .container {
        padding-top: 80px;
    }

    .floating-play-button {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 3.5rem;
    }
}