:root {
    --js-black: #000000;
    --js-yellow: #f7df1e;
    --bg-dark: #1e1e1e;
    --white: #ffffff;
    --text-light: var(--white);

    --base-font: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --code-font: monospace;
    --base-size: 16px;
}

body {
    font-family: var(--base-font);
    font-size: var(--base-size);
    margin: 0;
    background-color: var(--bg-dark);
    color: var(--text-light);
    scroll-behavior: smooth;
    transition: font-size 0.3s, font-family 0.3s;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--js-black);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-family: sans-serif;
    font-size: 20px;
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
}

.js-logo {
    width: 35px;
    height: 35px;
    background-color: var(--js-yellow);
    display: flex;
    justify-content: center;
    color: var(--js-black);
    font-weight: 750;
    border-radius: 4px;
    align-items: center;
    margin-right: -1px;
    line-height: 1;
    user-select: none;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--js-yellow);
}

.nav-links a.active {
    border-bottom: 2px solid var(--js-yellow);
    padding-bottom: 2px;
}

#hero {
    position: relative;
    overflow: hidden;
    height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(180deg, var(--js-black) 0%, var(--bg-dark) 100%);
    padding: 0 20px;
}

.hero-content {
    position: relative;
    z-index: 10;
}

.floating-js-logo {
    position: absolute;
    background-color: var(--js-yellow);
    color: var(--js-black);
    font-family: sans-serif;
    font-weight: 750;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 4px;
    user-select: none;
    opacity: 0.12;
    z-index: 1;
    /* position is set via JS using top/left + transform-origin trick */
}

@keyframes orbitCW {
    from { transform: rotate(0deg)    translateX(var(--radius)) rotate(0deg); }
    to   { transform: rotate(360deg)  translateX(var(--radius)) rotate(-360deg); }
}

@keyframes orbitCCW {
    from { transform: rotate(0deg)    translateX(var(--radius)) rotate(0deg); }
    to   { transform: rotate(-360deg) translateX(var(--radius)) rotate(360deg); }
}

#hero h1 {
    font-size: 4rem;
    color: var(--js-yellow);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

#hero h3 {
    font-size: 1.5rem;
    font-weight: 400;
    color: #ccc;
    margin-top: 0;
}


.interactivity-text {
    display: inline-block;
    white-space: nowrap;
    color: var(--white);
    cursor: default;
    position: relative;
}

.char {
    display: inline-block;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

.interactivity-text:not(:hover) .char {
    animation: float 3s ease-in-out infinite;
}

.char:nth-child(odd) {
    animation-duration: 3.5s;
    animation-delay: 0.2s;
}

.char:nth-child(2n) {
    animation-duration: 3s;
}

.char:nth-child(3n) {
    animation-duration: 4s;
    animation-delay: 0.5s;
}

@keyframes float {

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

    50% {
        transform: translateY(-4px);
        opacity: 0.8;
    }
}

.interactivity-text:hover .char {
    color: var(--js-yellow);
    text-shadow: 0 0 12px rgba(247, 223, 30, 0.8);
    animation: none;
}

.interactivity-text:hover .char {
    transform: translateY(-1px) scale(1.15);
}

.cta-primary,
.cta-secondary {
    display: inline-block;
    padding: 10px 25px;
    margin: 10px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

.cta-primary {
    background-color: var(--js-yellow);
    color: var(--js-black);
}

.cta-secondary {
    border: 2px solid var(--js-yellow);
    color: var(--js-yellow);
}

.cta-container {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

#functions {
    padding: 80px 20px;
    max-width: 1000px;
    margin: 0 auto;
}

#functions h2 {
    text-align: center;
    color: var(--js-yellow);
    margin-bottom: 40px;
    font-size: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: #252525;
    border-radius: 8px;
    overflow: hidden;
}

th,
td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #333;
}

th {
    background-color: var(--js-yellow);
    color: var(--js-black);
}

code {
    background-color: #444;
    padding: 4px 8px;
    border-radius: 4px;
    color: #f78c6c;
    font-family: var(--code-font);
}

small {
    display: block;
    margin-top: 5px;
    color: #888;
    font-style: italic;
}

button {
    background-color: #444;
    color: white;
    border: none;
    padding: 8px 15px;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.3s;
}

button:hover {
    background-color: var(--js-yellow);
    color: var(--js-black);
}

#settings-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--white);
    display: flex;
    align-items: center;
    transition: transform 0.3s, color 0.3s;
}

#settings-toggle svg {
    width: 24px;
    height: 24px;
    display: block;
}

#settings-toggle:hover {
    background: none;
    color: var(--js-yellow);
    transform: rotate(45deg);
}

#settings_popover {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #2a2a2a;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.8);
    border: 1px solid var(--js-yellow);
    z-index: 9999;
    width: 300px;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
}

#settings_popover.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -40%);
}

#settings_popover h3 {
    margin-top: 0;
    color: var(--js-yellow);
    border-bottom: 1px solid #444;
    padding-bottom: 10px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
}

.setting-group label {
    font-size: 0.9rem;
    margin-bottom: 5px;
    color: #ccc;
}

.setting-group select,
.setting-group input {
    background-color: #1e1e1e;
    color: white;
    border: 1px solid #555;
    padding: 8px;
    border-radius: 4px;
    font-family: inherit;
}

.setting-group select:focus {
    outline: 1px solid var(--js-yellow);
}

@media (max-width: 600px) {
    #hero h1 {
        font-size: 2.5rem;
    }

    #hero h3 {
        font-size: 1.2rem;
    }

    .cta-container {
        flex-direction: column;
        align-items: center;
    }

    table {
        font-size: 0.85rem;
    }

    th,
    td {
        padding: 10px 5px;
    }

    .char {
        display: inline-block;
    }
}

::-webkit-scrollbar {
    width: 12px;
    background-color: var(--js-black);
}

::-webkit-scrollbar-track {
    background-color: var(--js-black);
}

::-webkit-scrollbar-thumb {
    background-color: var(--js-yellow);
    border: 2px solid var(--bg-dark);
    border-radius: 4px;
}

::selection {
    color: var(--js-black);
    background-color: var(--js-yellow);
}

.ts-logo-img {
    display: none;
}

/* openLink popover shares settings popover styles */
#open-link-popover {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #2a2a2a;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.8);
    border: 1px solid var(--js-yellow);
    z-index: 9999;
    width: 320px;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
}

#open-link-popover.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -40%);
}

#open-link-popover h3 {
    margin-top: 0;
    color: var(--js-yellow);
    border-bottom: 1px solid #444;
    padding-bottom: 10px;
}

/* overlay backdrop */
.popover-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.popover-backdrop.visible {
    opacity: 1;
    visibility: visible;
}

/* reduce-motion support */
body.reduce-motion *,
body.reduce-motion *::before,
body.reduce-motion *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
}

/* color inputs */
input[type="color"] {
    border: 1px solid #555;
    border-radius: 4px;
    background: #1e1e1e;
    cursor: pointer;
}

input[type="number"] {
    width: 100%;
    box-sizing: border-box;
}

/* ── SPA Views ───────────────────────────────────────────────────────────── */
.page-view {
    animation: fadeIn 0.4s ease-out;
}

.page-view.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Shared section styles ───────────────────────────────────────────────── */
section {
    padding: 80px 20px;
    max-width: 1100px;
    margin: 0 auto;
}

#hero {
    max-width: 100%;
    padding: 0;
}

section h2 {
    text-align: center;
    color: var(--js-yellow);
    margin-bottom: 10px;
    font-size: 2rem;
}

.section-intro {
    text-align: center;
    color: #aaa;
    margin: 0 auto 40px;
    max-width: 700px;
}

/* ── Tutorials ───────────────────────────────────────────────────────────── */
.tutorial-scroll {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding-bottom: 16px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.tutorial-scroll::-webkit-scrollbar {
    height: 8px;
}

.tutorial-scroll::-webkit-scrollbar-track {
    background: #111;
    border-radius: 4px;
}

.tutorial-scroll::-webkit-scrollbar-thumb {
    background: var(--js-yellow);
    border-radius: 4px;
}

.tutorial-card {
    flex: 0 0 380px;
    background: #252525;
    border-radius: 10px;
    padding: 20px;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 1px solid #333;
}

.tutorial-card h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--white);
}

.tutorial-card p {
    margin: 0;
    font-size: 0.85rem;
    color: #aaa;
    flex: 1;
}

.tutorial-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.badge {
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.badge-en   { background: #1a3a5c; color: #7ec8f7; }
.badge-de   { background: #3a1a1a; color: #f78c8c; }
.badge-duration { background: #2a2a1a; color: var(--js-yellow); }

.video-wrapper {
    position: relative;
    padding-top: 56.25%;
    border-radius: 6px;
    overflow: hidden;
    background: #111;
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.tutorial-links {
    margin-top: 30px;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.tutorial-links p {
    margin: 0;
    color: #aaa;
    font-size: 0.9rem;
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #252525;
    border: 1px solid #444;
    color: var(--js-yellow);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: background 0.2s, border-color 0.2s;
}

.resource-link:hover {
    background: #333;
    border-color: var(--js-yellow);
}

/* ── TypeScript section ──────────────────────────────────────────────────── */
#typescript {
    max-width: 1000px;
}

.ts-intro {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.ts-logo-link {
    flex-shrink: 0;
}

.js-logo-img,
.ts-logo-img {
    width: 80px;
    height: 80px;
    display: block;
    cursor: pointer;
}

.ts-logo-img { display: none; }

.ts-content {
    flex: 1;
    min-width: 280px;
}

.ts-content p  { color: #ccc; line-height: 1.7; }
.ts-content h3 { color: var(--js-yellow); margin: 24px 0 8px; font-size: 1.1rem; }
.ts-content ul { color: #ccc; line-height: 1.8; padding-left: 20px; }
.ts-content a  { color: var(--js-yellow); }

.code-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 8px;
}

.code-compare pre {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 14px;
    overflow-x: auto;
    margin: 0;
}

.code-compare code {
    background: none;
    padding: 0;
    color: #ccc;
    font-size: 0.82rem;
}

.code-label {
    font-size: 0.8rem;
    color: #888;
    margin: 0 0 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ts-content > pre {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 14px;
    overflow-x: auto;
}

.ts-content > pre code {
    background: none;
    padding: 0;
    color: #ccc;
    font-size: 0.85rem;
}

/* ── Anderes / Ressourcen ────────────────────────────────────────────────── */
#anderes { max-width: 1000px; }

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 30px;
}

.resource-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: #252525;
    border: 1px solid #333;
    border-radius: 10px;
    padding: 18px;
    text-decoration: none;
    color: var(--white);
    transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.resource-card:hover {
    border-color: var(--js-yellow);
    background: #2e2e2e;
    transform: translateY(-2px);
}

.resource-card strong {
    display: block;
    color: var(--js-yellow);
    margin-bottom: 4px;
}

.resource-card p {
    margin: 0;
    font-size: 0.85rem;
    color: #aaa;
    line-height: 1.5;
}

.resource-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    line-height: 1;
}

@media (max-width: 600px) {
    .code-compare { grid-template-columns: 1fr; }
    .tutorial-card { flex: 0 0 300px; }
    .ts-intro { flex-direction: column; }
}

/* ── Playground Elements ─────────────────────────────────────────────────── */
.playground-editor-wrapper {
    width: 100%;
    margin-top: 20px;
}

#playground-code {
    width: 100%;
    height: 250px;
    background-color: #1a1a1a;
    color: var(--js-yellow);
    font-family: var(--code-font);
    font-size: 1rem;
    padding: 15px;
    border: 1px solid #444;
    border-radius: 8px;
    resize: vertical;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.5);
    box-sizing: border-box;
}

#playground-code:focus {
    outline: 1px solid var(--js-yellow);
    border-color: var(--js-yellow);
}

.playground-output-wrapper {
    background-color: #111;
    border: 1px solid #333;
    border-radius: 8px;
    margin-top: 20px;
    padding: 15px;
    min-height: 100px;
}

.playground-output-wrapper h4 {
    margin: 0 0 10px 0;
    color: #888;
    font-size: 0.9rem;
    text-transform: uppercase;
}

#playground-out {
    color: #dfdfdf;
    font-family: var(--code-font);
    white-space: pre-wrap;
    margin: 0;
    font-size: 0.95rem;
}