/* --- CSS VARIABLES FOR SHARED COMPONENTS --- */
:root {
    --nav-bg: rgba(255, 255, 255, 0.7);
    --nav-border: rgba(0, 0, 0, 0.1);
    --nav-text: #1d1d1f;
    --mobile-menu-bg: rgba(255, 255, 255, 0.95);
    --thin-border: 1px solid rgba(0, 0, 0, 0.05);
}

/* --- DARK MODE OVERRIDES & LOGO FIX --- */
@media (prefers-color-scheme: dark) {
    :root {
        --nav-bg: rgba(28, 28, 30, 0.7);
        --nav-border: rgba(255, 255, 255, 0.1);
        --nav-text: #b3b3b3;
        --mobile-menu-bg: rgba(28, 28, 30, 0.95);
        --thin-border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .nav-logo { content: url("img/logo-w.png"); }
}

/* --- GLOBAL SCROLLBAR FIX (Prevents horizontal layout shift) --- */
html {
    overflow-y: scroll;
}

/* --- NAVIGATION --- */
nav {
    position: sticky; top: 0; z-index: 9999;
    width: 100%;
    box-sizing: border-box;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--nav-border) !important;
    height: 52px; transition: background 0.3s;
}
.nav-content {
    max-width: 980px; margin: 0 auto; height: 100%;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; position: relative;
}

/* Explicitly set text-decoration and color to fix blue link bug */
.nav-brand { 
    display: flex; 
    align-items: center; 
    gap: 12px; 
    text-decoration: none !important; 
    color: var(--nav-text) !important; 
    z-index: 10001; 
}

/* JS-triggered logo spin */
.nav-logo { 
    height: 24px; 
    width: 24px; 
    border-radius: 6px; 
    object-fit: cover; 
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1); 
}
.nav-logo.spin-right { transform: rotate(360deg); }
.nav-logo.spin-left { transform: rotate(0deg); }

/* Explicitly set text-decoration and color to fix blue link bug */
.brand-name { 
    font-weight: 600; 
    font-size: 14px; 
    color: var(--nav-text) !important; 
    text-decoration: none !important;
}

.nav-links { display: flex; gap: 6px; align-items: center; }
.mobile-only { display: none; }
.nav-links a, .lang-btn {
    color: var(--nav-text); text-decoration: none; font-size: 13px;
    padding: 4px 10px; border-radius: 99px; position: relative;
    overflow: hidden; transition: all 0.2s ease; font-weight: 500;
    cursor: pointer; border: 1px solid transparent;
}

/* Spotlight Effekt */
.nav-links a::before, .lang-btn::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(circle at var(--nav-x, 50%) var(--nav-y, 50%), rgba(128,128,128,0.15) 0%, transparent 60%);
    opacity: 0; transition: opacity 0.2s; pointer-events: none;
}
.nav-links a:hover, .lang-btn:hover { background: rgba(128,128,128, 0.08); }
.nav-links a:hover::before, .lang-btn:hover::before { opacity: 1; }
.lang-btn { margin-left: 8px; border: 1px solid var(--nav-border); padding: 4px 10px; font-size: 11px; text-transform: uppercase; }

@media (min-width: 851px) {
    .nav-links a.active-link { background: rgba(128,128,128, 0.08); }
}

/* --- FOOTER --- */
footer { 
    background-color: var(--bg-color); 
    padding: 20px 0; 
    border-top: var(--thin-border) !important; 
    margin-top: auto; 
}
.footer-content { color: var(--secondary-text); font-size: 12px; max-width: 980px; margin: 0 auto; padding: 0 24px; }
.footer-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--secondary-text); text-decoration: none; transition: color 0.2s ease; }
.footer-links a.current-page { color: var(--text-color); }
.footer-links:hover a.current-page { color: var(--secondary-text); }
.footer-links:hover a:hover { color: var(--text-color); }

/* Version Pill */
.copyright-wrapper { cursor: default; display: flex; align-items: center; }
.version-pill { 
    margin-left: 8px; 
    font-weight: 500; 
    color: var(--accent-color); 
    font-size: 11px; 
    background: rgba(0,0,0,0.05); 
    padding: 2px 6px; 
    border-radius: 99px;
    opacity: 0;
    transform: translateX(18px);
    transition: opacity 0.25s, transform 0.25s;
    pointer-events: none;
}

@media (min-width: 851px) {
    .copyright-wrapper:hover .version-pill {
        opacity: 1;
        transform: translateX(0);
    }
}

/* --- MOBILE MENU --- */
#menu-toggle { display: none; }
.hamburger-label { display: none; cursor: pointer; z-index: 10002; padding: 10px; }
.hamburger-icon, .hamburger-icon::before, .hamburger-icon::after { width: 20px; height: 2px; background: var(--nav-text); display: block; transition: 0.3s; position: relative; border-radius: 2px; }
.hamburger-icon::before { content: ""; top: -6px; position: absolute; width: 20px; height: 2px; background: var(--nav-text); }
.hamburger-icon::after { content: ""; top: 6px; position: absolute; width: 20px; height: 2px; background: var(--nav-text); }

@media (max-width: 850px) {

    /* Nav ist direkt im HTML eingebettet; body padding-top übernimmt den Abstand */
    .page-transitioning * { transition: none !important; animation: none !important; }

    /* ── Navbar: fixed, safe-area-aware, kein Blur/Transparenz ── */
    nav {
        position: fixed; width: 100%;
        padding-top: env(safe-area-inset-top);
        height: calc(52px + env(safe-area-inset-top));
        background: #ffffff;          /* vollständig opak */
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        transition: none;             /* kein Flicker beim Seitenwechsel */
    }
    .nav-content { height: 52px; }
    body { padding-top: calc(52px + env(safe-area-inset-top)) !important; }

    /* Smooth-Scroll auf Mobile deaktivieren (verhindert Ruckeln bei Navigation) */
    html { scroll-behavior: auto; }

    .hamburger-label { display: block; }

    /* Name mittig */
    .brand-name {
        font-size: 15px;
        position: absolute; left: 50%; transform: translateX(-50%);
        white-space: nowrap;
    }

    /* Dropdown: klappt unter der Navbar auf – top passt zur safe-area-aware Nav */
    .nav-links {
        position: fixed;
        top: calc(52px + env(safe-area-inset-top));
        left: 0; right: 0; width: 100%;
        background: #ffffff;          /* opak, kein Blur */
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: 1px solid var(--nav-border);
        border-top: none;
        border-radius: 0 0 18px 18px;
        box-shadow: 0 10px 32px rgba(0, 0, 0, 0.13);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 8px 14px 18px;
        box-sizing: border-box;
        gap: 2px;
        clip-path: inset(0 0 100% 0 round 0 0 18px 18px);
        pointer-events: none;
        transition: clip-path 0.38s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 9998;
    }

    .nav-links a, .nav-links .lang-btn {
        opacity: 0;
        transform: translateY(-6px);
    }
    .nav-links a {
        font-size: 17px; font-weight: 600;
        padding: 12px 14px; border-radius: 10px;
        width: 100%; box-sizing: border-box; text-align: left;
        transition: opacity 0.28s ease, transform 0.28s ease, background 0.2s ease, color 0.2s ease;
    }
    .lang-btn {
        align-self: flex-start;
        font-size: 12px; padding: 7px 14px;
        margin-top: 8px;
        border: 1px solid var(--nav-border);
        border-radius: 99px;
        transition: opacity 0.28s ease, transform 0.28s ease, background 0.2s ease;
    }

    #menu-toggle:checked ~ .nav-links {
        clip-path: inset(0 0 0% 0 round 0 0 18px 18px);
        pointer-events: auto;
    }

    /* Gestaffeltes Einblenden */
    #menu-toggle:checked ~ .nav-links a:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.08s; }
    #menu-toggle:checked ~ .nav-links a:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.14s; }
    #menu-toggle:checked ~ .nav-links a:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.20s; }
    #menu-toggle:checked ~ .nav-links a:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.26s; }
    #menu-toggle:checked ~ .nav-links a:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 0.32s; }
    #menu-toggle:checked ~ .nav-links .lang-btn      { opacity: 1; transform: translateY(0); transition-delay: 0.38s; }

    /* Hamburger → X */
    #menu-toggle:checked ~ .hamburger-label .hamburger-icon { background: transparent; }
    #menu-toggle:checked ~ .hamburger-label .hamburger-icon::before { transform: rotate(45deg); top: 0; }
    #menu-toggle:checked ~ .hamburger-label .hamburger-icon::after  { transform: rotate(-45deg); top: 0; }

    .nav-links a.active-link {
        background: rgba(47, 65, 86, 0.10) !important;
        color: var(--accent-color, #2F4156) !important;
    }

    .mobile-only { display: block; }
    .footer-row { flex-direction: column; text-align: center; }
    .nav-links a::before, .lang-btn::before { display: none; }
    .nav-links a:hover, .lang-btn:hover { background: rgba(128,128,128,0.08); }
    .version-pill { display: none; }
    .copyright-wrapper { justify-content: center; }

    /* === Dynamischer & flüssiger Seitenaufbau auf Mobile === */

    /* 1. Seiten-Einblendung: leichte Aufwärtsbewegung + Fade */
    @keyframes mobilePageIn {
        from { opacity: 0; transform: translateY(10px); }
        to   { opacity: 1; transform: translateY(0);    }
    }
    html { animation: mobilePageIn 0.38s cubic-bezier(0.22, 1, 0.36, 1) both; }

    /* 2. Reveal-Elemente: sanftes Einfedern von unten */
    /*    translateY klein + GPU-Compositing = kein Layout-Jitter */
    .reveal {
        will-change: transform, opacity !important;
        opacity: 0 !important;
        transform: translateY(22px) !important;
        transition:
            opacity   0.55s cubic-bezier(0.22, 1, 0.36, 1),
            transform 0.55s cubic-bezier(0.22, 1, 0.36, 1) !important;
    }
    .reveal.visible {
        opacity:   1 !important;
        transform: translateY(0) !important;
    }

    /* 3. Gestaffelte Einblendung für mehrere Elemente */
    .reveal.delay-1 { transition-delay: 0.06s !important; }
    .reveal.delay-2 { transition-delay: 0.12s !important; }
    .reveal.delay-3 { transition-delay: 0.18s !important; }

    /* 4. Automatisches Staffeln für Geschwister-Elemente */
    .reveal:nth-child(1) { transition-delay: 0.00s !important; }
    .reveal:nth-child(2) { transition-delay: 0.07s !important; }
    .reveal:nth-child(3) { transition-delay: 0.13s !important; }
    .reveal:nth-child(4) { transition-delay: 0.18s !important; }
    .reveal:nth-child(5) { transition-delay: 0.22s !important; }
}


/* Dark Mode: opake dunkle Navbar auf Mobile */
@media (max-width: 850px) and (prefers-color-scheme: dark) {
    nav        { background: #121214; }
    .nav-links { background: #121214; border-color: rgba(255,255,255,0.1); }
}