/* ==========================================================================
   1. CSS VARIABLES & THEMES 
   ========================================================================== */
:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a; 
    --text-muted: #86868b; 
    --card-bg: #f8f9fa; 
    --nav-bg: rgba(255, 255, 255, 0.72);
    --border-color: #e5e5ea;
    --radius: 24px;
    --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    
    --hero-overlay: 
        linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 85%, var(--bg-color) 100%),
        radial-gradient(ellipse 150% 100% at 50% 50%, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0) 60%);
    
    --input-bg: #ffffff;
    --input-focus: rgba(0,0,0,0.05);

    /* --- LIGHT MODE BRANDING: "Cupertino Sunrise" (Apple Style) --- */
    --brand-gradient: linear-gradient(135deg, #FF2D55 0%, #FF8359 50%, #FFCC00 100%);
    --brand-accent: #FF2D55; /* Das markante Apple-Pink als Akzent für Icons */
    --brand-glow: rgba(255, 45, 85, 0.12); /* Sehr diffuser, sanfter Apple-Glow */
}

[data-theme="dark"] {
    --bg-color: #0b0c0c; 
    --text-color: #f5f5f7;
    --text-muted: #a1a1a6;
    --card-bg: #151616;
    --nav-bg: rgba(11, 12, 12, 0.72);
    --border-color: #2d2e2e;
    
    --hero-overlay: 
        linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.4) 85%, var(--bg-color) 100%),
        radial-gradient(ellipse 150% 100% at 50% 50%, rgba(0, 0, 0, 0.45) 0%, rgba(0, 0, 0, 0) 60%);
    
    --input-bg: #000000;
    --input-focus: rgba(255,255,255,0.1);

    /* --- DARK MODE BRANDING: Aurora Gradient (Cyan -> Blue -> Purple) --- */
    --brand-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #f093fb 100%);
    --brand-accent: #4facfe;
    --brand-glow: rgba(79, 172, 254, 0.15); 
}

/* ==========================================================================
   2. GLOBAL STYLES & TYPOGRAPHY
   ========================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; -webkit-font-smoothing: antialiased; }
body { background-color: var(--bg-color); color: var(--text-color); transition: background-color 0.4s ease, color 0.4s ease; line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }

section { padding: 100px 5%; max-width: 1200px; margin: 0 auto; position: relative; }
/* Container zur Zentrierung und Begrenzung */
.container { max-width: 1200px; margin: 0 auto; width: 100%; padding: 0 5%; }

h1, h2, h3 { font-family: 'Inter', sans-serif; font-weight: 600; letter-spacing: -0.03em; margin-bottom: 20px; color: var(--text-color); }
h1 { font-size: 4rem; line-height: 1.1; }
h2 { font-size: 2.5rem; margin-bottom: 40px; }
p { font-size: 1.125rem; color: var(--text-muted); margin-bottom: 20px; }

.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.card { background: var(--card-bg); border-radius: var(--radius); padding: 30px; transition: var(--transition); border: 1px solid transparent; display: flex; flex-direction: column;}
.card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.06); border-color: var(--border-color); }
.tag { display: inline-block; padding: 4px 10px; background: var(--border-color); color: var(--text-color); border-radius: 20px; font-size: 0.75rem; font-weight: 600; margin-bottom: 15px; width: fit-content;}

/* FIX: Icons verziehen sich nicht UND bleiben zentriert */
svg.lucide { vertical-align: middle; flex-shrink: 0; display: inline-block; }

/* ==========================================================================
   3. BUTTONS & ACCENT COLORS
   ========================================================================== */
.text-gradient { background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; color: transparent; display: inline-block; padding-right: 5px; }

/* Solider, starker Button-Stil (Kein Gradient mehr) */
.btn-primary { background: var(--text-color) !important; color: var(--bg-color) !important; border: none !important; padding: 16px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: var(--transition); box-shadow: 0 10px 20px rgba(0,0,0,0.08) !important; }
.btn-primary:hover { transform: translateY(-3px) !important; box-shadow: 0 15px 30px rgba(0,0,0,0.12) !important; opacity: 0.95 !important; }
[data-theme="dark"] .btn-primary:hover { box-shadow: 0 15px 30px rgba(255,255,255,0.1) !important; }

.btn-outline { display: inline-flex; align-items: center; justify-content: center; padding: 16px 32px; border: 2px solid var(--border-color); border-radius: 100px; font-weight: 600; font-size: 1rem; color: var(--text-color); background: transparent; transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1); text-decoration: none; }
.btn-outline:hover { border-color: var(--text-color); background: var(--text-color); color: var(--bg-color); transform: translateY(-2px); box-shadow: 0 10px 20px rgba(0,0,0,0.08); }
.btn-outline i { transition: transform 0.3s ease; }
.btn-outline:hover i { transform: translateX(6px); }

/* Auch der Sekundär-Button füllt sich nun solide (ohne Gradient) */
.btn-cool { display: inline-flex !important; align-items: center !important; justify-content: center !important; gap: 10px !important; width: 100% !important; padding: 16px 20px !important; background: var(--bg-color) !important; border: 1px solid var(--border-color) !important; border-radius: 50px !important; color: var(--text-color) !important; font-weight: 600 !important; font-size: 0.95rem !important; text-decoration: none !important; white-space: nowrap !important; transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important; margin-top: 15px !important; cursor: pointer !important; }
.btn-cool:hover { background: var(--text-color) !important; color: var(--bg-color) !important; border-color: transparent !important; transform: translateY(-2px) !important; box-shadow: 0 10px 20px rgba(0,0,0,0.08) !important; }
.btn-cool i { width: 18px !important; height: 18px !important; transition: transform 0.4s ease !important; }
.btn-cool:hover i { transform: translateX(6px) !important; color: var(--bg-color) !important; }

/* ==========================================================================
   4. NAVIGATION
   ========================================================================== */
nav { position: fixed; top: 0; width: 100%; background: var(--nav-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); z-index: 1000; border-bottom: 1px solid var(--border-color); transition: var(--transition); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 15px 5%; display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: 'Quicksand', sans-serif; font-weight: 600; font-size: 1.05rem; letter-spacing: 0.02em; z-index: 1001; position: relative; }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a { font-size: 0.9rem; font-weight: 400; transition: color 0.3s; }
.nav-links a:hover, .nav-links a.active { color: var(--text-color); font-weight: 600; }
.controls { display: flex; gap: 10px; align-items: center; z-index: 1001; position: relative; }

button { background: var(--card-bg); color: var(--text-color); border: 1px solid var(--border-color); padding: 10px; border-radius: 50px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
button:hover { background: var(--text-color); color: var(--bg-color); }
.btn-text { background: var(--card-bg); color: var(--text-color); border: 1px solid var(--border-color); border-radius: 50px; padding: 12px 24px; font-size: 0.95rem; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); text-decoration: none; }
.btn-text:hover { background: var(--text-color); color: var(--bg-color); }

.menu-toggle { display: none; background: transparent; border: none; }
.mobile-menu { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background: var(--bg-color); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 30px; transform: translateY(-100%); transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1); z-index: 999; }
.mobile-menu.active { transform: translateY(0); }
.mobile-menu a { font-size: 2rem; font-weight: 600; letter-spacing: -0.03em; }

/* ==========================================================================
   5. HERO SECTIONS (Index & Unterseiten) 
   ========================================================================== */
#hero { height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding-top: 60px; max-width: 100%; overflow: hidden; }
.hero-content { position: relative; z-index: 1; max-width: 100%; width: 100%; padding: 0 5%; }
.hero-content p { max-width: 700px; margin: 0 auto 30px auto; }
#hero h1 { font-size: 3.5rem; font-family: 'Quicksand', sans-serif; font-weight: 600; letter-spacing: -0.03em; margin-bottom: 20px; line-height: 1.2; }

/* Video Fix: Entfernt Browser-Ränder UND dunkle MP4-Kompressionskanten */
#hero video {
    background: transparent !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    -webkit-appearance: none;
    -webkit-clip-path: inset(2px round 1px);
    clip-path: inset(2px round 1px);
}

/* Darkmode Image Toggle für Startseite */
.hero-img-dark { display: none !important; }
[data-theme="dark"] .hero-img-light { display: none !important; }

/* Mask-Gradient für das Dark Mode Video */
[data-theme="dark"] .hero-img-dark { 
    display: block !important; 
    -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 25%, rgba(0,0,0,0) 85%);
    mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 25%, rgba(0,0,0,0) 85%);
}

.btn-submit { background: var(--text-color) !important; color: var(--bg-color) !important; border-radius: 50px !important; font-size: 1.05rem !important; font-weight: 600 !important; border: none !important; cursor: pointer !important; transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important; display: inline-flex !important; align-items: center !important; justify-content: center !important; text-decoration: none !important; }
.btn-submit i { transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important; }
.btn-submit:hover { transform: translateY(-4px) !important; box-shadow: 0 15px 30px rgba(0,0,0,0.12) !important; opacity: 0.95 !important; }
[data-theme="dark"] .btn-submit:hover { box-shadow: 0 15px 30px rgba(255,255,255,0.1) !important; }
.btn-submit:hover i { transform: translateX(6px) !important; }

/* ==========================================================================
   - UNTERSEITEN STYLES 
   ========================================================================== */

/* Subpage Hero */
@keyframes ambientFlow { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
section.subpage-hero { position: relative !important; width: 100% !important; max-width: 1200px !important; margin: 0 auto 80px auto !important; padding: 180px 5% 100px 5% !important; border-radius: 0 !important; border: none !important; display: flex !important; flex-direction: column !important; align-items: flex-start !important; text-align: left !important; }
section.subpage-hero::before { content: '' !important; position: absolute !important; top: 0 !important; left: 50% !important; transform: translateX(-50%) !important; width: 100vw !important; height: 100% !important; background: linear-gradient(120deg, var(--bg-color) 0%, var(--card-bg) 50%, var(--bg-color) 100%) !important; background-size: 200% 200% !important; animation: ambientFlow 12s ease-in-out infinite !important; border-bottom: 1px solid var(--border-color) !important; z-index: -1 !important; }
section.subpage-hero > * { position: relative !important; z-index: 1 !important; max-width: 650px !important; }
.hero-chip { display: inline-flex !important; align-items: center !important; justify-content: center !important; gap: 8px !important; padding: 6px 14px !important; border-radius: 50px !important; font-size: 0.8rem !important; font-weight: 500 !important; text-transform: none !important; letter-spacing: normal !important; margin-bottom: 20px !important; transition: all 0.3s ease !important; background: var(--bg-color) !important; border: 1px solid var(--border-color) !important; box-shadow: 0 4px 12px rgba(0,0,0,0.04) !important; color: var(--text-color) !important; }
.hero-chip i, .hero-chip svg { width: 14px !important; height: 14px !important; color: var(--text-color) !important; }

/* NEU: Solide Textfarbe für die Subpage-Überschriften (schwarz/weiß je nach Modus) - KEIN GRADIENT */
section.subpage-hero h1 { font-family: 'Quicksand', sans-serif !important; font-size: 2.8rem !important; font-weight: 600 !important; line-height: 1.15 !important; letter-spacing: -0.03em !important; margin: 0 0 15px 0 !important; color: var(--text-color) !important; background: none !important; -webkit-background-clip: initial !important; -webkit-text-fill-color: initial !important; display: inline-block !important; padding-right: 5px !important; }

/* About Page */
.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.principle-card { background: var(--card-bg); border: 1px solid transparent; border-radius: var(--radius); padding: 40px; display: flex; flex-direction: column; align-items: flex-start; text-align: left; transition: var(--transition); }
.principle-card:hover { transform: translateY(-6px); box-shadow: 0 25px 50px rgba(0,0,0,0.06); border-color: var(--border-color); }
.principle-icon-wrapper { display: flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 16px; background: var(--bg-color); border: 1px solid var(--border-color); box-shadow: 0 8px 16px rgba(0,0,0,0.03); margin-bottom: 24px; transition: var(--transition); }
.principle-card:hover .principle-icon-wrapper { transform: scale(1.05); box-shadow: 0 10px 20px rgba(0,0,0,0.08); }
.principle-icon-wrapper i { width: 24px !important; height: 24px !important; color: var(--text-color); transition: var(--transition); }
.principle-card:hover .principle-icon-wrapper i { color: var(--brand-accent); }
.principle-card h3 { font-size: 1.35rem; margin-bottom: 12px; }
.principle-card p { font-size: 1rem; line-height: 1.6; color: var(--text-muted); margin: 0; }
.team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 50px 30px; }
.team-card { display: flex; flex-direction: column; align-items: center; text-align: center; transition: var(--transition); }
.team-photo-wrapper { position: relative; width: 180px; height: 180px; border-radius: 50%; padding: 4px; background: transparent; transition: var(--transition); margin-bottom: 25px; z-index: 1; }
.team-photo-wrapper::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; border-radius: 50%; background: var(--brand-gradient); opacity: 0; transition: var(--transition); z-index: -1; }
.team-card:hover .team-photo-wrapper { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.team-card:hover .team-photo-wrapper::before { opacity: 1; }
.team-photo { width: 100%; height: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: 50%; background: var(--border-color); display: block; }
.team-card h3 { margin: 0 0 8px 0; font-size: 1.25rem; }
.role-gradient { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; color: transparent; display: inline-block; }

/* ==========================================================================
   10. PROJECTS PAGE 
   ========================================================================== */
.project-details-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 60px; align-items: start; position: relative; z-index: 1; }
.project-main-text { position: relative; }

.quick-facts-card { 
    background: var(--bg-color) !important; 
    border: 1px solid var(--border-color) !important; 
    border-radius: var(--radius) !important; 
    padding: 30px !important; 
    position: sticky; 
    top: 120px; 
    box-shadow: none !important; 
}

/* ==========================================================================
   11. NEWS PAGE GRID & FILTER FIX
   ========================================================================== */
.news-section { width: 100% !important; max-width: 1200px !important; margin: 0 auto !important; padding: 0 5% 100px 5% !important; }

.filter-container { display: flex; justify-content: flex-start; gap: 12px; margin-bottom: 60px; overflow-x: auto; padding-bottom: 10px; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.filter-container::-webkit-scrollbar { display: none; }
.filter-btn { background: transparent; color: var(--text-muted); border: 1px solid var(--border-color); padding: 10px 20px; border-radius: 50px; font-size: 0.9rem; font-weight: 600; cursor: pointer; white-space: nowrap; transition: all 0.3s ease; }
.filter-btn:hover { border-color: var(--text-color); color: var(--text-color); background: transparent; }

.filter-btn.active { background: var(--text-color) !important; color: var(--bg-color) !important; border-color: var(--text-color) !important; }

.news-kachel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 40px; margin-top: 40px; }
.news-kachel { background: var(--card-bg); border-radius: calc(var(--radius) * 1.2); border: 1px solid var(--border-color); display: flex; flex-direction: column; overflow: hidden; text-decoration: none; color: inherit; transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1); }
.news-kachel:hover { transform: translateY(-8px); box-shadow: 0 25px 50px rgba(0,0,0,0.06); border-color: var(--border-color); }
.kachel-media { width: 100%; height: 240px; background: var(--bg-color); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; border-bottom: 1px solid var(--border-color); }
.kachel-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1); }
.news-kachel:hover .kachel-media img { transform: scale(1.05); }
.kachel-media i { width: 80px; height: 80px; color: var(--brand-accent); opacity: 0.8; transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1); }
.news-kachel:hover .kachel-media i { transform: scale(1.1); }
.kachel-content { padding: 40px; display: flex; flex-direction: column; flex-grow: 1; }
.kachel-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.kachel-date { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.05em; text-transform: uppercase; }

.news-kachel h3 { font-size: 1.5rem; line-height: 1.3; margin-bottom: 15px; transition: all 0.4s ease; }
/* NEU: Hover-Titel ist nun einfach solide die Accent Color (Pink/Cyan), KEIN Gradient mehr */
.news-kachel:hover h3 { color: var(--brand-accent) !important; background: none !important; -webkit-text-fill-color: initial !important; }

.news-kachel p { font-size: 1.05rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 30px; flex-grow: 1; }
.kachel-footer { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 0.95rem; color: var(--text-color); transition: color 0.4s ease; }
.news-kachel:hover .kachel-footer { color: var(--brand-accent); }
.kachel-footer i { transition: transform 0.4s ease; width: 18px; }
.news-kachel:hover .kachel-footer i { transform: translateX(6px); }

/* ==========================================================================
   12. RESEARCH PAGE
   ========================================================================== */
.research-layout { display: grid !important; grid-template-columns: 1fr 2fr !important; gap: 60px !important; align-items: start !important; }
.focus-tags { display: flex !important; flex-wrap: wrap !important; gap: 10px !important; margin-bottom: 30px !important; }
.focus-tag { background: var(--bg-color) !important; border: 1px solid var(--border-color) !important; padding: 8px 16px !important; border-radius: 50px !important; font-size: 0.85rem !important; font-weight: 600 !important; display: inline-flex !important; align-items: center !important; gap: 8px !important; color: var(--text-color) !important; transition: var(--transition) !important; text-decoration: none !important; }
.focus-tag i { width: 16px !important; height: 16px !important; color: var(--brand-accent) !important; }
.focus-tag:hover { border-color: var(--text-muted) !important; transform: translateY(-2px) !important; }
.paper-list { display: flex !important; flex-direction: column !important; gap: 20px !important; }
.paper-item { display: flex !important; align-items: center !important; gap: 25px !important; padding: 30px !important; border-radius: calc(var(--radius) * 1.2) !important; border: 1px solid var(--border-color) !important; background: var(--card-bg) !important; text-decoration: none !important; color: inherit !important; transition: var(--transition) !important; }
.paper-item:hover { transform: translateY(-4px) !important; box-shadow: 0 20px 40px rgba(0,0,0,0.05) !important; border-color: var(--border-color) !important; }
.paper-icon { width: 50px !important; height: 50px !important; border-radius: 50% !important; flex-shrink: 0 !important; background: var(--bg-color) !important; box-shadow: inset 0 0 0 1px var(--border-color) !important; display: flex !important; align-items: center !important; justify-content: center !important; color: var(--text-muted) !important; transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important; }
.paper-icon i { width: 22px !important; height: 22px !important; }

/* Keine Gradients mehr in Hover-Effekten (Research Page) */
.paper-item:hover .paper-icon { background: var(--brand-glow) !important; color: var(--brand-accent) !important; box-shadow: none !important; border-color: transparent !important; transform: scale(1.1) !important; }

.paper-content { flex-grow: 1 !important; display: flex !important; flex-direction: column !important; }
.paper-meta { font-size: 0.85rem !important; color: var(--text-muted) !important; font-weight: 600 !important; margin-bottom: 8px !important; text-transform: uppercase !important; letter-spacing: 0.05em !important; }
.paper-item h3 { font-size: 1.25rem !important; margin-bottom: 8px !important; line-height: 1.3 !important; transition: var(--transition) !important; }
.paper-item p { font-size: 0.95rem !important; margin: 0 !important; color: var(--text-muted) !important; line-height: 1.5 !important; }

/* Hover-Titel ist nun einfach die Accent Color */
.paper-item:hover h3 { color: var(--brand-accent) !important; }

.download-icon { flex-shrink: 0 !important; display: flex !important; align-items: center !important; }
.download-icon i { width: 20px !important; height: 20px !important; color: var(--text-muted) !important; transition: var(--transition) !important; }
.paper-item:hover .download-icon i { color: var(--brand-accent) !important; transform: translateY(3px) !important; }

/* ==========================================================================
   13. CONTACT PAGE
   ========================================================================== */
.contact-layout { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 60px !important; align-items: start !important; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; text-align: left; }
.form-group label { font-size: 0.9rem; font-weight: 600; color: var(--text-color); margin-left: 5px; }
.form-group input, .form-group textarea, .form-group select { background: var(--bg-color) !important; border: 1px solid var(--border-color) !important; padding: 18px !important; border-radius: 16px !important; color: var(--text-color) !important; font-family: inherit !important; font-size: 1rem !important; transition: var(--transition) !important; outline: none !important; width: 100% !important; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--brand-accent) !important; box-shadow: 0 0 0 4px var(--input-focus) !important; }

/* ==========================================================================
   14. NEU FÜR INDEX.HTML (Startseiten-Erweiterungen)
   ========================================================================== */

/* Startseite Kacheln für Projekte */
.section-light-bg { background-color: var(--card-bg); width: 100vw; margin-left: calc(-50vw + 50%); margin-right: calc(-50vw + 50%); padding: 120px 0; }
.section-light-bg .container { max-width: 1200px; margin: 0 auto; padding: 0 5%; }

.project-showcase-grid { display: grid !important; grid-template-columns: repeat(auto-fit, minmax(450px, 1fr)) !important; gap: 40px !important; }
.showcase-card { background: #ffffff !important; border-radius: calc(var(--radius) * 1.5) !important; padding: 50px !important; position: relative !important; overflow: hidden !important; border: 1px solid var(--border-color) !important; display: flex !important; flex-direction: column !important; transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1) !important; text-decoration: none !important; color: inherit !important; box-shadow: 0 15px 40px rgba(0,0,0,0.03) !important; }
[data-theme="dark"] .showcase-card { background: var(--bg-color) !important; box-shadow: none !important; }
.showcase-card:hover { transform: translateY(-8px) !important; box-shadow: 0 30px 60px rgba(0,0,0,0.08) !important; border-color: var(--border-color) !important; }

/* NEU: Solide Text-Farbe bei Hover (Kein Gradient mehr) */
.showcase-number { font-size: 12rem !important; font-weight: 800 !important; font-family: 'Inter', sans-serif !important; color: var(--text-color) !important; opacity: 0.03 !important; position: absolute !important; top: -30px !important; right: -20px !important; line-height: 1 !important; transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1) !important; pointer-events: none !important; }
.showcase-card:hover .showcase-number { color: var(--brand-accent) !important; background: transparent !important; -webkit-background-clip: unset !important; -webkit-text-fill-color: unset !important; opacity: 0.15 !important; transform: scale(1.05) translate(-10px, 10px) !important; }
[data-theme="dark"] .showcase-card:hover .showcase-number { opacity: 0.2 !important; }

.showcase-header { display: flex !important; justify-content: space-between !important; align-items: flex-start !important; margin-bottom: 40px !important; position: relative !important; z-index: 1 !important; }

/* Showcase Icon sieht nun exakt aus wie die Prinzipien Icons */
.showcase-icon { width: 50px !important; height: 50px !important; border-radius: 12px !important; background: var(--brand-glow) !important; display: flex !important; align-items: center !important; justify-content: center !important; box-shadow: none !important; border: none !important; transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1) !important; }
.showcase-icon i { width: 24px !important; height: 24px !important; color: var(--brand-accent) !important; transition: var(--transition) !important; }
.showcase-card:hover .showcase-icon { transform: scale(1.05) !important; box-shadow: 0 10px 20px rgba(0,0,0,0.04) !important; background: var(--brand-glow) !important; }
.showcase-card:hover .showcase-icon i, .showcase-card:hover .showcase-icon svg { color: var(--brand-accent) !important; stroke: var(--brand-accent) !important; }

.showcase-footer { display: flex !important; align-items: center !important; justify-content: space-between !important; font-weight: 600 !important; z-index: 1 !important; position: relative !important; font-size: 1rem !important; color: var(--text-color) !important; border-top: 1px solid var(--border-color) !important; padding-top: 25px !important; transition: var(--transition) !important; }
.showcase-footer i { transition: color 0.4s ease !important; } 
.showcase-card:hover .showcase-footer { color: var(--brand-accent) !important; border-top-color: var(--border-color) !important; }

/* Startseite Blog Full-Width */
.full-width-bg-section {
    position: relative !important;
    width: 100vw !important;
    max-width: 100vw !important; 
    margin-left: calc(-50vw + 50%) !important;
    margin-right: calc(-50vw + 50%) !important;
    padding: 120px 0 !important; 
    overflow: hidden !important;
    text-align: left;
}
.full-width-bg-section .section-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -2; }
.full-width-bg-section .section-bg img { width: 100%; height: 100%; object-fit: cover; object-position: center; }

/* Heller Overlay im Lightmode für Strahlkraft */
.full-width-bg-section .section-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255, 255, 255, 0.65); z-index: -1; transition: var(--transition); }
[data-theme="dark"] .full-width-bg-section .section-overlay { background: rgba(0, 0, 0, 0.7); }

/* Der Container der sicherstellt, dass alles auf einer Linie ist */
.full-width-bg-section .container { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 0 5%; }

/* Adaptive Glass Cards: Dunkler Text auf hellem Glas (Light Mode) */
.glass-card-override { background: rgba(255, 255, 255, 0.4) !important; backdrop-filter: blur(16px) !important; -webkit-backdrop-filter: blur(16px) !important; border: 1px solid rgba(255, 255, 255, 0.6) !important; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05) !important; color: var(--text-color) !important; text-align: left; }
.glass-card-override:hover { background: rgba(255, 255, 255, 0.6) !important; border-color: #ffffff !important; transform: translateY(-5px) !important; }
.glass-card-override p, .glass-card-override h3, .glass-card-override .glass-text, .glass-card-override .glass-date { color: var(--text-color) !important; }
.glass-card-override .tag { color: var(--text-color) !important; border-color: rgba(0, 0, 0, 0.1) !important; background: rgba(255, 255, 255, 0.5) !important; }
.glass-card-override i { color: var(--text-color) !important; }
.glass-card-override:hover h3 { background: none !important; -webkit-text-fill-color: var(--brand-accent) !important; color: var(--brand-accent) !important; }
.glass-footer-text, .glass-footer-icon i { color: var(--text-color) !important; }
.glass-footer-icon { border: 1px solid rgba(0,0,0,0.1); background: rgba(255,255,255,0.5); }

/* Header & Button im hellen Glas-Blog */
.bento-glass-header h2 { color: var(--text-color) !important; text-shadow: none !important; }
.bento-glass-header a.btn-text { background: rgba(255,255,255,0.5) !important; color: var(--text-color) !important; border-color: rgba(0,0,0,0.1) !important; }

/* Darkmode Adaption für Glas */
[data-theme="dark"] .glass-card-override { background: rgba(0, 0, 0, 0.4) !important; border: 1px solid rgba(255, 255, 255, 0.1) !important; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2) !important; }
[data-theme="dark"] .glass-card-override:hover { background: rgba(0, 0, 0, 0.6) !important; border: 1px solid rgba(255, 255, 255, 0.2) !important; }
[data-theme="dark"] .glass-card-override p, [data-theme="dark"] .glass-card-override h3, [data-theme="dark"] .glass-card-override .glass-text, [data-theme="dark"] .glass-card-override .glass-date, [data-theme="dark"] .glass-card-override i { color: #ffffff !important; }
[data-theme="dark"] .glass-card-override .tag { color: #ffffff !important; border-color: rgba(255, 255, 255, 0.2) !important; background: rgba(255, 255, 255, 0.1) !important; }
[data-theme="dark"] .glass-footer-text, [data-theme="dark"] .glass-footer-icon i { color: #ffffff !important; }
[data-theme="dark"] .glass-footer-icon { border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); }
[data-theme="dark"] .bento-glass-header h2 { color: #ffffff !important; text-shadow: 0 10px 30px rgba(0,0,0,0.5) !important; }
[data-theme="dark"] .bento-glass-header a.btn-text { background: rgba(255,255,255,0.1) !important; color: #ffffff !important; border-color: rgba(255,255,255,0.2) !important; }

.bento-grid { display: grid !important; grid-template-columns: 1fr !important; gap: 30px !important; }
@media (min-width: 992px) { .bento-grid { grid-template-columns: 2fr 1fr !important; } .bento-main { grid-row: span 2 !important; } }
.bento-card { border-radius: calc(var(--radius) * 1.2) !important; padding: 40px !important; display: flex !important; flex-direction: column !important; justify-content: space-between !important; height: 100% !important; text-decoration: none !important; transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1) !important; }

/* ==========================================================================
   15. FOOTER & RESPONSIVE BEIBEHALTEN
   ========================================================================== */
footer { background: transparent; padding: 80px 0 40px 0; border-top: 1px solid var(--border-color); }
.footer-grid { max-width: 1200px; margin: 0 auto; padding: 0 5%; display: grid; grid-template-columns: 5fr 2fr 2fr; gap: 40px; text-align: left; }
.footer-col h4 { font-size: 0.85rem; margin-bottom: 25px; font-family: 'Inter', sans-serif; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-color); }
.footer-col p { font-size: 1rem; line-height: 1.6; color: var(--text-muted); }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { color: var(--text-muted); font-size: 0.95rem; transition: color 0.3s ease; text-decoration: none; }
.footer-col ul li a:hover { color: var(--text-color); }
.social-links { display: flex; gap: 15px; margin-top: 25px; }
.social-links a { color: var(--text-muted); transition: all 0.3s ease; }
.social-links a:hover { color: var(--text-color); transform: translateY(-2px); }
.footer-bottom { max-width: 1200px; margin: 60px auto 0; padding: 0 5%; }
.footer-bottom-inner { width: 100%; border-top: 1px solid var(--border-color); padding-top: 20px; }
.footer-bottom-inner p { color: var(--text-muted); font-size: 0.75rem !important; margin-bottom: 0; letter-spacing: 0.02em; }

@media (max-width: 992px) {
    .principles-grid { grid-template-columns: repeat(2, 1fr); }
    .project-details-grid { grid-template-columns: 1fr; gap: 40px; }
    .quick-facts-card { position: static; }
    .research-layout, .contact-layout { grid-template-columns: 1fr !important; gap: 40px !important; }
    .paper-item { flex-direction: column !important; align-items: flex-start !important; gap: 15px !important; }
    .download-icon { align-self: flex-end !important; margin-top: -30px !important; }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    #hero h1 { font-size: 2.2rem; white-space: normal; }
    section.subpage-hero { padding: 140px 5% 60px 5% !important; }
    
    .nav-links, .desktop-controls { display: none !important; }
    .menu-toggle { display: flex !important; }
    
    .project-showcase-grid { grid-template-columns: 1fr !important; }
    .showcase-card { padding: 35px !important; }
    .showcase-number { font-size: 9rem !important; top: -15px !important; right: -15px !important; }
    .showcase-card h3 { font-size: 1.6rem !important; }

    .principles-grid { grid-template-columns: 1fr; gap: 20px; }
    
    .kachel-content { padding: 30px; }
    .news-kachel h3 { font-size: 1.3rem; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom-inner { text-align: center; }
}

/* ==========================================================================
   16. COOKIE BANNER
   ========================================================================== */
.cookie-banner { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(150%); max-width: 800px; width: 90%; background: var(--nav-bg); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 25px; box-shadow: 0 25px 50px rgba(0,0,0,0.15); display: flex; align-items: center; justify-content: space-between; gap: 30px; z-index: 9999; opacity: 0; transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.6s ease; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.cookie-banner.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.cookie-content h3 { font-size: 1.25rem; margin-bottom: 8px; font-family: 'Quicksand', sans-serif; color: var(--text-color); }
.cookie-content p { font-size: 0.95rem; margin-bottom: 0; line-height: 1.5; color: var(--text-muted); }
.cookie-buttons { display: flex; gap: 12px; flex-shrink: 0; }
.cookie-btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-color); padding: 10px 20px; border-radius: 50px; font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: all 0.3s ease; }
.cookie-btn-outline:hover { background: var(--text-color); color: var(--bg-color); border-color: var(--text-color); }
.cookie-btn-primary { background: var(--text-color); color: var(--bg-color); border: none; padding: 10px 20px; border-radius: 50px; font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: all 0.3s ease; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.cookie-btn-primary:hover { opacity: 0.85; transform: translateY(-2px); }

@media (max-width: 768px) { 
    .cookie-banner { flex-direction: column; align-items: flex-start; width: 95%; bottom: 15px; padding: 20px; gap: 20px; } 
    .cookie-buttons { width: 100%; flex-direction: column; } 
    .cookie-btn-outline, .cookie-btn-primary { width: 100%; justify-content: center; } 
}

/* ==========================================================================
   17. MOBILE MENU BUTTON FIX
   ========================================================================== */
.mobile-menu .controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Überschreibt die riesige 2rem-Schrift für den Sprach-Button */
.mobile-menu a.btn-text {
    height: 48px;
    padding: 0 24px;
    margin: 0;
    font-size: 1rem !important; 
    letter-spacing: normal !important;
}

.mobile-menu .themeToggleBtn {
    height: 48px;
    width: 48px;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}