/*
  Consolidated stylesheet for DA_Website
  - Slightly lighter gray theme
  - Accent colors: blue, yellow, red
  - Header restored to translucent style
  - Responsive rules and consistent avatar sizing
*/
:root {
    --bg: #141417; /* page background */
    --bg-light: #1b1c1f;
    --card: rgba(255,255,255,0.06);
    --card-strong: rgba(255,255,255,0.09);
    --text: #f6f7f8;
    --muted: #b7bcc0;
    --primary: #c7cccf;
    --accent-blue: #4dd4ff;
    --accent-2: #3ac6b8;
    --accent-yellow: #ffd166;
    --accent-red: #ff6b6b;
    --border: rgba(255,255,255,0.07);
    --shadow: 0 20px 50px rgba(0,0,0,0.44);
    --radius: 16px;
    --max-width: 1160px;
    /* layout spacing */
    --header-height: 76px;
    --space-lg: 4rem;
    --space-md: 2.5rem;
    --space-sm: 1.25rem;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family: Arial, Helvetica, sans-serif;
  color:var(--text);
  line-height:1.6;
  background: radial-gradient(circle at top left, rgba(200,195,190,0.03), transparent 28rem),
              radial-gradient(circle at top right, rgba(150,150,150,0.02), transparent 24rem),
              linear-gradient(180deg,var(--bg),rgba(20,20,22,0.98));
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(100% - 2rem,var(--max-width));margin-inline:auto}
.section{padding:var(--space-lg) 0}

/* Header / Nav */
.site-header{
  position:sticky;top:0;z-index:100;
  /* ensure header matches the gray theme using bg-light with translucency */
  background: linear-gradient(180deg, rgba(27,28,31,0.95), rgba(27,28,31,0.82));
  backdrop-filter: blur(14px);
  border-bottom:1px solid rgba(255,255,255,0.04);
}
.navbar{min-height:var(--header-height);display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:0 0.6rem}
.logo{display:flex;align-items:center;gap:0.8rem;font-weight:700;letter-spacing:0.02em}
.site-logo{width:48px;height:48px;object-fit:contain;display:block;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:0.4rem;list-style:none}
.nav-links a{display:inline-flex;padding:0.7rem 1rem;border-radius:999px;color:var(--muted);font-weight:600;transition:0.22s}
.nav-links a:hover,.nav-links a.active{background:rgba(255,255,255,0.03);color:var(--text)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,0.04);border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;margin:5px auto;background:var(--text);border-radius:99px}

/* Hero / Layout grids */
.hero{min-height:calc(100vh - var(--header-height));display:flex;align-items:center}
.hero-grid,.project-grid,.split-grid,.contact-grid{display:grid;grid-template-columns:1.1fr 0.9fr;align-items:center;gap:2rem}
.eyebrow{color:var(--accent-blue);font-weight:800;text-transform:uppercase;letter-spacing:0.12em;font-size:0.8rem;margin-bottom:0.7rem}
h1{font-size:clamp(2.4rem,6vw,5rem);max-width:950px;line-height:1.05;margin-bottom:0.85rem}
h2{font-size:clamp(2rem,4vw,3.2rem);margin-bottom:1rem}
h3{font-size:1.2rem;margin-bottom:0.75rem}
p{color:var(--muted)}
.hero-text{max-width:680px;font-size:1.05rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0.8rem 1.25rem;border-radius:999px;border:1px solid transparent;font-weight:800;cursor:pointer;transition:transform 0.25s ease,border-color .22s ease,background .22s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--accent-blue),var(--accent-2, #3ac6b8));color:#06101d;box-shadow:0 8px 28px rgba(77,212,255,0.08)}
.btn-secondary{border-color:var(--border);background:linear-gradient(135deg,rgba(77,212,255,0.22),rgba(77,212,255,0.10));color:var(--text)}

/* Cards */
.hero-card,.info-panel,.contact-card,.impressum-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem}
.hero-media{overflow:hidden;border-radius:14px;border:1px solid rgba(255,255,255,0.04);background:linear-gradient(145deg,rgba(77,212,255,0.05),rgba(58,198,184,0.03)),rgba(0,0,0,0.06);aspect-ratio:4/3}
.hero-media img{width:100%;height:100%;object-fit:cover}

.hero-logo{width:100%;max-width:200px;height:auto;object-fit:contain;display:block;margin:0 auto 1.5rem}
.status-box{display:flex;gap:0.75rem;align-items:center;margin-top:1rem}
.status-dot{width:12px;height:12px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 8px rgba(74,222,128,0.12)}

.section-heading{max-width:760px;margin-bottom:2rem}

/* Feature / Team grids */
.feature-grid,.team-grid,.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.hardware-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.hardware-card{display:flex;flex-direction:column;gap:0.85rem;padding:0.8rem;height:100%;border-radius:14px;background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));border:1px solid var(--border)}
.hardware-img{width:100%;height:clamp(180px,22vw,260px);object-fit:contain;display:block;margin:0 auto;border-radius:10px;border:1px solid rgba(255,255,255,0.03);background:rgba(0,0,0,0.03)}

.team-grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.feature-card,.team-card,.timeline-item{padding:1.1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);transition:transform .22s}
.feature-card:hover,.team-card:hover,.timeline-item:hover{transform:translateY(-6px);background:var(--card-strong)}

/* Team cards and avatars */
.team-card{display:flex;flex-direction:column;gap:0.6rem;overflow:hidden;min-height:100%}
.team-card h2{font-size:1.15rem;margin:0.35rem 0;line-height:1.15;word-break:break-word;overflow-wrap:anywhere}
.team-card p{margin:0}

.icon-box,.avatar-placeholder{display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,rgba(77,212,255,0.06),rgba(58,198,184,0.04));border:1px solid rgba(255,255,255,0.03);color:var(--accent-blue);font-weight:900;margin-bottom:1rem}
.icon-box{width:64px;height:64px;font-size:0.82rem}
.avatar-placeholder{width:100%;height:clamp(140px,20vw,220px);overflow:hidden;border-radius:12px;display:grid;place-items:center}
.avatar-placeholder img{width:100%;height:100%;object-fit:cover;display:block}

/* Skill bars */
.skill-list{display:grid;gap:1.3rem;padding:1.5rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--card)}
.bar{height:12px;margin-top:0.55rem;border-radius:999px;background:rgba(255,255,255,0.06);overflow:hidden}
.bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent-blue),rgba(58,198,184,0.95))}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:start}
.contact-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:0.9rem}
.email-links{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:1.2rem}
.email-or{display:inline-flex;align-items:center;justify-content:center;color:var(--muted);font-weight:700;padding:0 0.4rem}
.email-link{display:inline-flex;align-items:center;padding:0.9rem 1rem;border:1px solid rgba(255,255,255,0.04);border-radius:999px;background:rgba(77,212,255,0.06);color:var(--text);font-weight:800}
.email-link:hover{background:linear-gradient(90deg,rgba(77,212,255,0.16),rgba(58,198,184,0.14));transform:translateY(-2px)}

/* Forms */
label{color:var(--text);font-weight:700}
input,textarea{width:100%;border:1px solid var(--border);border-radius:14px;padding:0.9rem 1rem;background:rgba(255,255,255,0.04);color:var(--text);font:inherit;outline:none}
input:focus,textarea:focus{border-color:var(--accent-blue);box-shadow:0 0 0 4px rgba(77,212,255,0.08)}

.impressum-box hr{border:0;border-top:1px solid var(--border);margin:1.4rem 0}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:rgba(0,0,0,0.18);padding:2rem 0}
.footer-grid{display:flex;justify-content:space-between;gap:1.5rem;align-items:center}
.footer-links{display:flex;gap:1rem;flex-wrap:wrap}
.footer-links a{color:var(--muted)}
.footer-links a:hover{color:var(--accent-blue)}

/* Reveal animation */
.reveal{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media (max-width:920px){
  .hero-grid,.project-grid,.split-grid,.contact-grid{grid-template-columns:1fr}
  .feature-grid,.team-grid,.timeline{grid-template-columns:repeat(2,1fr)}
  .hero{min-height:auto}
  .nav-toggle{display:block}
  .nav-links{display:none}
  .nav-links.open{display:flex}
  .site-logo{width:40px;height:40px}
}

@media (max-width:720px){
  .section{padding:var(--space-md) 0}
  .hero-logo{max-width:180px;margin-bottom:1.35rem}
  .nav-toggle{display:block}
  .nav-links{position:absolute;left:1rem;right:1rem;top:calc(var(--header-height) + 10px);display:none;flex-direction:column;align-items:stretch;padding:1rem;border:1px solid rgba(255,255,255,0.03);border-radius:14px;background:linear-gradient(180deg,rgba(19,20,24,0.96),rgba(11,11,13,0.9));box-shadow:0 14px 40px rgba(0,0,0,0.6)}
  .nav-links.open{display:flex}
  .feature-grid,.team-grid,.timeline,.hardware-grid{grid-template-columns:1fr}
  .team-grid{gap:1rem}
  .feature-card,.team-card,.timeline-item,.hardware-card,.hero-card,.info-panel,.contact-card,.impressum-box,.skill-list{padding:1rem}
  .team-card{align-items:center;text-align:center}
  .team-card h2{font-size:1.05rem}
  /* Mobile team photos: no crop, full image visible */
  .avatar-placeholder{width:100%;height:auto;aspect-ratio:auto;margin-inline:auto;display:block;overflow:visible;background:none;border:none}
  .avatar-placeholder img{width:100%;height:auto;object-fit:contain;background:transparent}
  .hardware-grid{gap:1rem;margin-top:1rem}
  .hardware-card{gap:0.7rem}
  .hardware-img{height:auto;aspect-ratio:4/3;object-fit:cover}
  .hero-grid,.project-grid,.split-grid,.contact-grid{gap:1.25rem}
  .hero-text{font-size:1rem;max-width:100%}
  .section-heading{margin-bottom:1.25rem}
  .footer-grid{flex-direction:column;align-items:flex-start}
  .email-links{flex-direction:column}
  .email-link{width:100%;justify-content:center}
  .contact-card{align-items:stretch;text-align:left}
  .contact-card h2,.impressum-box h2{font-size:1.35rem}
  .impressum-box{padding:1rem}
  .impressum-box p{font-size:0.98rem}
}

@media (max-width:480px){
  :root{--radius:14px}
  .hero-logo{max-width:160px;margin-bottom:1.2rem}
  h1{font-size:clamp(1.8rem,6vw,2.6rem);margin-bottom:0.7rem}
  .team-card h2{font-size:1rem}
  .avatar-placeholder{width:100%;height:auto;aspect-ratio:auto}
  .avatar-placeholder img{width:100%;height:auto;object-fit:contain}
  .hero-media{aspect-ratio:16/10}
  .hardware-img{aspect-ratio:1/1}
  .btn{min-height:56px;padding:1rem 1.25rem;font-size:1rem}
  .container{width:calc(100% - 2rem)}
  .status-box{gap:0.5rem}
  .status-box p,.footer-grid p,.hero-text,p{word-break:break-word;overflow-wrap:anywhere}
  .contact-card{padding:0.85rem}
  .email-link{font-size:0.95rem;padding:0.85rem 0.95rem}
  .impressum-box h3{font-size:1.05rem}
}