/* ── Reset & Base ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --clr-bg:        #0d0f14;
    --clr-surface:   #1a1d25;
    --clr-border:    #2a2e3a;
    --clr-primary:   #0d9488;
    --clr-text:      #d4d8e2;
    --clr-muted:     #7a8099;
    --clr-white:     #ffffff;
    --font:          'Segoe UI', system-ui, sans-serif;
    --radius:        6px;
    --max-w:         1100px;
}

/* ── Light Theme ───────────────────────────────────────────────────── */
body.theme-light {
    --clr-bg:      #f4f6f9;
    --clr-surface: #ffffff;
    --clr-border:  #d1d8e0;
    --clr-text:    #1e2433;
    --clr-muted:   #6b7280;
    --clr-white:   #1e2433;
}
body.theme-light a { color: var(--clr-primary); }

/* Nav-Links im Ruhezustand: Teal-Text auf hellem Hintergrund */
body.theme-light .main-nav a { color: var(--clr-primary); }

/* Alle klickbaren Elemente mit Teal-Hintergrund → immer weiße Schrift */
body.theme-light .btn-primary,
body.theme-light .btn-secondary,
body.theme-light .main-nav a:hover,
body.theme-light .main-nav a.active,
body.theme-light .workshop-sidebar a:hover,
body.theme-light .workshop-sidebar a.active,
body.theme-light .theme-toggle:hover { color: #fff; }
/* Hero im Tagmodus: dunkles Grau damit weiße Schrift lesbar bleibt */
body.theme-light .hero {
    background: linear-gradient(135deg, #2d3748 0%, #3d4a63 100%);
}
body.theme-light .hero h1,
body.theme-light .hero .lead { color: #fff; }

body.theme-light code {
    background: #e8f4f3;
    border-color: #b2d8d4;
    color: #0d6b62;
}
body.theme-light figure { background: #f0f0f0; }

body {
    font-family: var(--font);
    background: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--clr-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    width: min(var(--max-w), 100% - 2rem);
    margin-inline: auto;
}

/* ── Header ────────────────────────────────────────────────────────── */
.site-header {
    background: var(--clr-surface);
    border-bottom: 1px solid var(--clr-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding-block: .75rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-white);
    text-decoration: none;
    flex-shrink: 0;
}
.logo img { border-radius: 8px; }

/* ── Navigation ────────────────────────────────────────────────────── */
.main-nav { margin-left: auto; }

.main-nav ul {
    list-style: none;
    display: flex;
    gap: .25rem;
}

.main-nav a {
    display: block;
    padding: .5rem .9rem;
    border-radius: var(--radius);
    color: var(--clr-text);
    font-size: .95rem;
    transition: background .15s, color .15s;
}
.main-nav a:hover, .main-nav a.active {
    background: var(--clr-primary);
    color: var(--clr-white);
    text-decoration: none;
}

/* Dropdown */
.has-dropdown { position: relative; }
.dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    min-width: 220px;
    flex-direction: column;
    box-shadow: 0 8px 24px #0006;
}
.has-dropdown.open .dropdown { display: flex; }
.dropdown li a { white-space: nowrap; }

/* Burger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--clr-text);
    font-size: 1.5rem;
    cursor: pointer;
    margin-left: auto;
}

/* ── Theme Toggle ──────────────────────────────────────────────────── */
.theme-toggle {
    background: none;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    color: var(--clr-text);
    font-size: 1.1rem;
    width: 2.1rem;
    height: 2.1rem;
    cursor: pointer;
    transition: background .15s, border-color .15s;
    flex-shrink: 0;
}
.theme-toggle:hover {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    color: #fff;
}

/* ── Lang Switcher ─────────────────────────────────────────────────── */
.lang-switcher {
    display: flex;
    gap: .3rem;
    font-size: 1.3rem;
}
.lang-switcher a {
    opacity: .5;
    transition: opacity .15s;
    text-decoration: none;
}
.lang-switcher a:hover,
.lang-switcher a.active { opacity: 1; }

/* ── Buttons ───────────────────────────────────────────────────────── */
.btn {
    display: inline-block;
    padding: .65rem 1.4rem;
    border-radius: var(--radius);
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter .15s;
    text-decoration: none;
}
.btn:hover { filter: brightness(1.15); text-decoration: none; }
.btn-primary  { background: var(--clr-primary); color: #fff; }
.btn-secondary { background: var(--clr-primary); color: #fff; }
.btn-large { padding: .85rem 2rem; font-size: 1.05rem; }

/* ── Hero ──────────────────────────────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, #12151e 0%, #1e2233 100%);
    padding: 5rem 1rem;
    text-align: center;
    border-bottom: 1px solid var(--clr-border);
}
.hero h1 {
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    color: var(--clr-white);
    margin-bottom: 1rem;
}
.hero .lead {
    max-width: 640px;
    margin-inline: auto;
    color: var(--clr-muted);
    margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── Feature Grid ──────────────────────────────────────────────────── */
.features { padding: 4rem 0; }
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}
.feature-card {
    background: var(--clr-primary);
    border: 1px solid var(--clr-primary);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    color: #fff;
}
.feature-card h3 { margin-top: .75rem; color: #fff; }
.feature-icon { color: #fff; }
a.feature-card:hover {
    border-color: var(--clr-primary);
    filter: brightness(1.15);
    transform: translateY(-2px);
}

/* ── Download Box ──────────────────────────────────────────────────── */
.download-box {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    padding: 2.5rem;
    margin-block: 2rem;
    text-align: center;
}
.download-box h2 { color: var(--clr-white); margin-bottom: 1.25rem; }
.download-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: .75rem; }
.file-info { color: var(--clr-muted); font-size: .875rem; }

/* ── Workshop ──────────────────────────────────────────────────────── */
.workshop-page {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2.5rem;
    padding-block: 2.5rem;
    align-items: start;
}
.workshop-sidebar {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    overflow: hidden;
    position: sticky;
    top: 5rem;
}
.workshop-sidebar ul { list-style: none; }
.workshop-sidebar a {
    display: block;
    padding: .65rem 1rem;
    border-bottom: 1px solid var(--clr-border);
    color: var(--clr-primary);
    font-size: .9rem;
}
.workshop-sidebar a:hover { background: var(--clr-primary); color: var(--clr-white); text-decoration: none; }
.workshop-sidebar a.active { background: var(--clr-primary); color: var(--clr-white); font-weight: 600; }
.workshop-sidebar li:last-child a { border-bottom: none; }

.workshop-menu { list-style: none; padding: 1rem 0; }
.workshop-menu li { margin-bottom: .5rem; }
.workshop-menu a { font-size: 1.05rem; }

article h1 { color: var(--clr-white); margin-bottom: 1.5rem; font-size: 1.75rem; }
article h2 { color: var(--clr-white); margin-block: 1.5rem .75rem; }
article h3 { color: var(--clr-text); margin-block: 1rem .5rem; }
article p  { margin-bottom: 1rem; }
article ul, article ol { margin-left: 1.5rem; margin-bottom: 1rem; }
article img { max-width: 100%; border-radius: var(--radius); margin-block: 1rem; }

/* ── Figure / Screenshot ───────────────────────────────────────────── */
figure {
    margin-block: 1.5rem;
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    overflow: hidden;
    display: inline-block;
    width: 100%;
}
figure img {
    display: block;
    max-width: 100%;
    margin: 0;
    border-radius: 0;
}
figcaption {
    padding: .5rem .75rem;
    font-size: .8rem;
    color: var(--clr-muted);
    border-top: 1px solid var(--clr-border);
}

/* ── Inline Code & Keyboard ────────────────────────────────────────── */
code {
    font-family: 'Cascadia Code', 'Fira Mono', monospace;
    font-size: .875em;
    background: #1e2233;
    border: 1px solid var(--clr-border);
    border-radius: 3px;
    padding: .1em .4em;
    color: #c9d1d9;
}
kbd {
    font-family: 'Cascadia Code', 'Fira Mono', monospace;
    font-size: .8em;
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-bottom-width: 2px;
    border-radius: 4px;
    padding: .15em .5em;
    color: var(--clr-white);
}

/* ── Vorwort / Home article ────────────────────────────────────────── */
.vorwort {
    max-width: 780px;
    margin-inline: auto;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
}
.vorwort h2 { color: var(--clr-white); margin-bottom: .75rem; }
.vorwort ul { margin-left: 1.5rem; margin-bottom: 1rem; }

/* ── Feature-Card als Link ─────────────────────────────────────────── */
a.feature-card {
    display: block;
    color: inherit;
    text-decoration: none;
    transition: border-color .2s, transform .15s;
}
a.feature-card:hover {
    border-color: var(--clr-primary);
    transform: translateY(-2px);
    text-decoration: none;
}
.feature-icon { font-size: 2rem; display: block; margin-bottom: .5rem; }

/* ── Requirements ──────────────────────────────────────────────────── */
.requirements, .changelog { margin-block: 2rem; }
.requirements h2, .changelog h2 { color: var(--clr-white); margin-bottom: .75rem; }
.requirements ul { list-style: disc; margin-left: 1.5rem; }

/* ── General page content ──────────────────────────────────────────── */
main.container { padding-block: 2.5rem; }
main.container h1 { color: var(--clr-white); margin-bottom: 1.5rem; font-size: 1.75rem; }
main.container h2 { color: var(--clr-white); margin-block: 1.5rem .75rem; }
main.container section { margin-bottom: 2.5rem; }

/* ── Site Banner (Startseite) ──────────────────────────────────────── */
.site-banner {
    width: 100%;
    overflow: hidden;
    max-height: 320px;
    border-bottom: 1px solid var(--clr-border);
}
.site-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* ── Footer ────────────────────────────────────────────────────────── */
.site-content { flex: 1; }
.site-footer {
    background: var(--clr-surface);
    border-top: 1px solid var(--clr-border);
    padding: 1.5rem 0;
    margin-top: auto;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: .875rem;
    color: var(--clr-muted);
}
.footer-nav { display: flex; gap: 1.25rem; }
.footer-nav a { color: var(--clr-muted); }
.footer-nav a:hover { color: var(--clr-text); }

/* ── Changelog ─────────────────────────────────────────────────────── */
.changelog-entry { margin-bottom: 2rem; }
.changelog-entry h3 {
    color: var(--clr-primary);
    font-size: 1rem;
    margin-bottom: .5rem;
}
.changelog-entry ul { list-style: disc; margin-left: 1.5rem; }
.changelog-entry li { margin-bottom: .3rem; }

/* ── Video List ────────────────────────────────────────────────────── */
.video-list { display: grid; gap: 2rem; margin-top: 1.5rem; }
.video-item h3 { color: var(--clr-white); margin-bottom: .75rem; font-size: 1rem; }
.video-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: var(--radius);
    background: #000;
}
.video-wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    border: none;
}

/* Click-to-Play Facade */
.video-facade {
    position: absolute;
    inset: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.video-facade img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
}
.play-btn {
    position: relative;
    z-index: 1;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    filter: drop-shadow(0 2px 10px rgba(0,0,0,.6));
    transition: transform .15s, filter .15s;
}
.play-btn:hover {
    transform: scale(1.12);
    filter: drop-shadow(0 4px 16px rgba(0,0,0,.8));
}

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .nav-toggle { display: block; }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--clr-surface);
        border-bottom: 1px solid var(--clr-border);
        padding: 1rem;
        margin-left: 0;
    }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; }
    .dropdown { position: static; border: none; box-shadow: none; padding-left: 1rem; }
    .has-dropdown:hover .dropdown { display: none; }
    .has-dropdown.open .dropdown { display: flex; }

    .workshop-page { grid-template-columns: 1fr; }
    .workshop-sidebar { position: static; }
}