/* ===========================================================================
   BACHELORPROJEKT · Angleichung an die anderen Seiten
   Wird NACH bachelorprojekt.css geladen und überschreibt nur:
   Farben, Navbar, Kontakt, Footer, Buttons und Rundungen.
   Schriftgrößen, Abstände und Layout im Inhalt bleiben unangetastet.

   Header, Kontakt und Footer rechnen bewusst in px: Diese Seite schaltet
   ihre Basisgröße unter 1200px auf 55% bzw. 50%, rem-Werte wären hier also
   kleiner als auf den anderen Seiten.
   =========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible+Next:wght@400;500;700&family=Bricolage+Grotesque:opsz,wght@12..96,400..800&display=swap");

/* ---------- Farben & Rundungen ---------- */

:root {
    --mt-paper: #F3F4FA;
    --mt-surface: #FFFFFF;
    --mt-ink: #16172E;
    --mt-ink-soft: #4A4C66;
    --mt-line: #D9DBEA;
    --mt-blue: #0004E0;
    --mt-on-blue: #FFFFFF;
    --mt-tint: #E4E5FF;
    --mt-band: #0004E0;
    --mt-on-band: #FFFFFF;

    --mt-display: 'Bricolage Grotesque', 'Helvetica Neue', Arial, sans-serif;
    --mt-body: 'Atkinson Hyperlegible Next', 'Segoe UI', system-ui, sans-serif;
    --mt-page-x: clamp(20px, 6vw, 90px);

    /* bestehende Variablen der Seite -> neue Werte */
    --bg-color: var(--mt-paper);
    --main-color: var(--mt-blue);
    --border: var(--mt-line);
    --color-border-tertiary: var(--mt-line);

    --radius-md: 14px;
    --radius-lg: 24px;
    --border-radius-md: 14px;
    --border-radius-lg: 24px;

    /* Inhalte auf denselben Rand wie die Navbar */
    --content-margin-left: var(--mt-page-x);
    --content-margin-right: var(--mt-page-x);
}

.dark-mode {
    --mt-paper: #0B0C24;
    --mt-surface: #14163A;
    --mt-ink: #E8E9F7;
    --mt-ink-soft: #A9ABC9;
    --mt-line: #2A2D5A;
    --mt-blue: #2f34d4;
    --mt-on-blue: #0B0C24;
    --mt-tint: #1D2060;
    --mt-band: #2f34d4;

    --bg-color: var(--mt-paper);
    --text-color: var(--mt-ink);
    --main-color: var(--mt-blue);
    --white-color: var(--mt-surface);
    --border: var(--mt-line);
    --shadow-color: rgba(0, 0, 0, .5);
    --color-background-primary: var(--mt-surface);
    --color-background-secondary: var(--mt-tint);
    --color-text-secondary: var(--mt-ink-soft);
    --color-border-tertiary: var(--mt-line);
}

body { transition: background-color .3s ease, color .3s ease; }

/* ---------- Header ---------- */

.header.header {
    height: 76px;
    padding: 0 var(--mt-page-x);
    display: flex;
    align-items: center;
    gap: 24px;
    transition: background-color .3s ease, box-shadow .3s ease;
}

.header.header.sticky {
    background: color-mix(in srgb, var(--mt-paper) 85%, transparent);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 var(--mt-line);
}

.header.header .logo {
    margin-right: auto;
    font-family: var(--mt-display);
    font-weight: 800;
    font-size: 26px;
    letter-spacing: -0.05em;
    color: var(--mt-blue);
}

.header.header #btn2,
.header.header #darkMode-icon {
    position: static;
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    margin: 0;
    padding: 0;
    display: grid;
    place-items: center;
    border: 1px solid var(--mt-line);
    border-radius: 50%;
    background: transparent;
    color: var(--mt-ink);
    opacity: 1;
    cursor: pointer;
    transition: border-color .2s ease, color .2s ease;
}

.header.header #btn2 {
    font-size: 22px;
    margin-right: -12px;
}

.header.header #darkMode-icon { font-size: 20px; }

.header.header #btn2:hover {
    border-color: var(--mt-blue);
    color: var(--mt-blue);
}

.header.header #darkMode-icon:hover { border-color: var(--mt-ink); }

.header.header #menu-icon {
    display: none;
    margin: 0;
    font-size: 32px;
    color: var(--mt-ink);
    cursor: pointer;
}

.header.header .navbar {
    position: static;
    display: flex;
    gap: 32px;
    width: auto;
    margin: 0;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
}

.header.header .navbar a {
    position: relative;
    display: inline;
    margin: 0;
    padding: 4px 0;
    font-family: var(--mt-body);
    font-size: 16px;
    font-weight: 500;
    color: var(--mt-ink);
    transition: color .2s ease;
}

.header.header .navbar a::before { display: none; }

.header.header .navbar a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--mt-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .3s ease;
}

.header.header .navbar a:hover::after,
.header.header .navbar a.active::after { transform: scaleX(1); }

.header.header .navbar a.active { color: var(--mt-blue); }

.header.header .lang-switch {
    position: static;
    transform: none;
    width: auto;
    margin: 0;
    padding: 3px;
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--mt-line);
    border-radius: 999px;
    font-size: 13px;
}

.header.header .lang-switch .lang-option {
    min-width: 0;
    margin: 0;
    padding: 9px 11px;
    border-radius: 999px;
    font-family: var(--mt-body);
    font-size: 13px;
    font-weight: 700;
    color: var(--mt-ink-soft);
    opacity: 1;
    transition: background-color .2s ease, color .2s ease;
}

.header.header .lang-switch .lang-option:hover { color: var(--mt-ink); }

.header.header .lang-switch .lang-option.active {
    background: var(--mt-ink);
    color: var(--mt-paper);
}

.header.header .lang-switch .lang-sep { display: none; }

/* Sandwich-Menü ab 900px, wie auf den anderen Seiten */
@media (max-width: 900px) {
    .header.header { gap: 12px; }

    .header.header #btn2 { margin-right: 0; }

    .header.header #menu-icon { display: block; }

    .header.header .navbar {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        gap: 0;
        padding: 10px var(--mt-page-x) 24px;
        background: var(--mt-paper);
        border-bottom: 1px solid var(--mt-line);
        box-shadow: 0 12px 24px rgba(22, 23, 46, .08);
    }

    .header.header .navbar.active { display: flex; }

    .header.header .navbar a {
        display: block;
        padding: 14px 0;
        font-family: var(--mt-display);
        font-size: 24px;
        font-weight: 600;
    }

    .header.header .navbar a::after { display: none; }
}

@media (max-width: 480px) {
    .header.header .lang-switch .lang-option { padding: 4px 8px; }

    .header.header #btn2,
    .header.header #darkMode-icon {
        width: 38px;
        height: 38px;
    }
}

/* ---------- Kontakt (wie auf den anderen Seiten) ---------- */

.contact {
    margin-top: 240px;
    padding: 120px var(--mt-page-x) 100px;
    border-radius: 40px 40px 0 0;
    background: var(--mt-band);
    color: var(--mt-on-band);
}

.contact .contact-heading {
    margin: 0 0 32px;
    font-family: var(--mt-display);
    font-weight: 700;
    font-size: clamp(40px, 5.5vw, 64px);
    line-height: 1;
    letter-spacing: -0.035em;
    color: inherit;
}

.contact .contact-heading span { color: inherit; }

.contact-mail {
    display: inline-block;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(0.7rem, 1.7vw, 3.1rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
    overflow-wrap: anywhere;
    opacity: .85;
    transition: opacity .2s ease;
    color: inherit;
}

.contact-mail:hover { opacity: 1; 
color: inherit;}

.contact .contact-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 36px;
    margin-top: 40px;
}

.contact .contact-meta a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mt-body);
    font-size: 18px;
    color: inherit;
    opacity: .85;
    transition: opacity .2s ease;
}

.contact .contact-meta a:hover { opacity: 1; }
.contact .contact-meta i { font-size: 24px; color: inherit; }

@media (max-width: 900px) {
    .contact {
        margin-top: 60px;
        padding-top: 90px;
        border-radius: 28px 28px 0 0;
    }
}

/* ---------- Footer (wie auf den anderen Seiten) ---------- */

.footer.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px var(--mt-page-x);
    background: var(--mt-band);
    border-top: 1px solid color-mix(in srgb, var(--mt-on-band) 20%, transparent);
}

.footer.footer .footer-text p {
    margin: 0;
    font-family: var(--mt-body);
    font-size: 14px;
    color: var(--mt-on-band);
    text-align: left;
}

.footer.footer .footer-iconTop a {
    width: 44px;
    height: 44px;
    padding: 0;
    display: grid;
    place-items: center;
    border: 0;
    outline: 0;
    border-radius: 50%;
    background: var(--mt-on-band);
    transition: transform .25s ease;
}

.footer.footer .footer-iconTop a:hover { transform: translateY(-3px); }

.footer.footer .footer-iconTop a i,
.footer.footer #pfeiloben {
    font-size: 22px;
    color: var(--mt-band);
}

@media (max-width: 480px) {
    .footer.footer {
        flex-direction: column-reverse;
        gap: 16px;
    }
}

/* ---------- Akkordion: Rundung + runder Plus-Button ---------- */

.accordion-item {
    border: 1px solid var(--mt-line);
    border-radius: var(--radius-lg);
    transition: border-color .25s ease;
}

.accordion-item:has(.accordion-header[aria-expanded="true"]) {
    border: 1px solid var(--mt-blue);
}

.accordion-header .accordion-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border: 1.5px solid var(--mt-line);
    border-radius: 50%;
    font-size: 21px;
    color: var(--text-color);
    transition: transform .35s ease, background-color .25s ease, color .25s ease, border-color .25s ease;
}

.accordion-header:hover .accordion-icon {
    border-color: var(--mt-blue);
    color: var(--mt-blue);
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(45deg);
    background: var(--mt-blue);
    border-color: var(--mt-blue);
    color: var(--mt-on-blue);
}

/* ---------- Tabs als Pills ---------- */

.research-tabs,
.konzept-tabs {
    border-bottom: 0;
}

.research-tab,
.konzept-tab {
    border: 1px solid var(--mt-line);
    border-radius: 999px;
    background: transparent;
    color: var(--mt-ink-soft);
    opacity: 1;
    transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.research-tab:hover,
.konzept-tab:hover {
    border: 1px solid var(--mt-blue);
    border-radius: 999px;
    background: transparent;
    color: var(--mt-blue);
}

.research-tab.active,
.konzept-tab.active,
.research-tab.active:hover,
.konzept-tab.active:hover {
    border-color: var(--mt-blue);
    background: var(--mt-blue);
    color: var(--mt-on-blue);
}

/* ---------- Weitere Buttons ---------- */

.dialog-stage-btn {
    border-radius: var(--radius-md);
}

.dialog-stage-btn:hover,
.dialog-stage-btn.active {
    background: var(--mt-surface);
}

/* Pfeile wie auf der Fotografie-Seite */
.mini-gallery-arrow.mini-gallery-arrow,
.lightbox-prev.lightbox-prev,
.lightbox-next.lightbox-next {
    width: 23px;
    height: 23px;
    padding: 0;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: rgba(22, 23, 46, .45);
    -webkit-backdrop-filter: blur(7px);
    backdrop-filter: blur(7px);
    color: #fff;
    font-size: 20px;
    opacity: 1;
    transition: background-color .2s ease;
}

.mini-gallery-arrow.mini-gallery-arrow {
    top: 50%;
    transform: translateY(-50%);
}

.mini-gallery-arrow.mini-gallery-arrow-prev { left: 14px; }
.mini-gallery-arrow.mini-gallery-arrow-next { right: 14px; }

.mini-gallery-arrow.mini-gallery-arrow:hover,
.lightbox-prev.lightbox-prev:hover,
.lightbox-next.lightbox-next:hover,
.final-concept-video-btn:hover,
.lightbox-close:hover {
    background: var(--mt-blue);
    color: #fff;
}

@media (max-width: 768px) {
    .mini-gallery-arrow.mini-gallery-arrow,
    .lightbox-prev.lightbox-prev,
    .lightbox-next.lightbox-next {
        width: 38px;
        height: 38px;
        font-size: 20px;
    }

    .mini-gallery-arrow.mini-gallery-arrow-prev { left: 10px; }
    .mini-gallery-arrow.mini-gallery-arrow-next { right: 10px; }
}


.final-concept-hero { border-radius: var(--radius-lg); }

/* ---------- Tags wie auf der Startseite ---------- */

.tag {
    background: var(--mt-tint);
    border: 1px solid transparent;
    color: var(--mt-blue);
}

.tag-highlight {
    background: transparent;
    border-color: var(--mt-line);
    color: var(--mt-ink-soft);
}

/* ---------- Meta-Zeile ohne Großbuchstaben ---------- */

.meta-label {
    text-transform: none;
    letter-spacing: 0;
    font-weight: 700;
}

/* ---------- Akkordion-Kopfzeile wie auf den anderen Seiten ----------
   Nur die Kopfzeile, der Inhalt im aufgeklappten Bereich bleibt unverändert. */

.accordion-wrapper {
    gap: 16px;
}

.accordion-header.accordion-header {
    gap: 23px;
    padding: 13px 23px;
    font-family: var(--mt-display);
    font-size: clamp(17px, 1.4vw, 20px);
    font-weight: 500;
    line-height: 1.15;
    color: var(--mt-ink);
    background: transparent;
}

.accordion-header.accordion-header span {
    font-family: inherit;
}

.accordion-header.accordion-header:hover,
.accordion-header.accordion-header[aria-expanded="true"] {
    color: var(--mt-blue);
    background: transparent;
}

@media (max-width: 768px) {
    .accordion-header.accordion-header {
        padding: 22px;
    }
}


/* ---------- Meta-Zeile wie auf den anderen Seiten ---------- */

.meta-row {
    border: 1px solid var(--mt-line);
    background: var(--mt-line);
}

.meta-row .meta-item {
    padding: 14px 20px;
    background: var(--mt-surface);
}

.meta-row .meta-label {
    margin-bottom: 4px;
    font-family: var(--mt-body);
    font-size: 11px;
    font-weight: 700;
    color: var(--mt-blue);
}

.meta-row .meta-value {
    font-family: var(--mt-body);
    font-size: 16px;
    font-weight: 500;
    color: var(--mt-ink);
}

/* Bootstrap unterstreicht alle Links - hier wieder abschalten */
a {
    text-decoration: none;
}