/* ==========================================================================
   Drone Research Center — shared styles (used by index.html + team.html)
   ========================================================================== */

:root{
  --bg: #272727;
  --bg-panel: #313131;
  --bg-panel-2: #2c2c2c;
  --line: rgba(255,255,255,0.12);
  --line-strong: rgba(255,255,255,0.24);
  --text: #efefef;
  --text-dim: #a6a6a6;
  --text-dimmer: #767676;
  --accent: #e3002b;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --maxw: 1180px;
}

/* ---------- reset ---------- */
*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  overflow-x:hidden;
  position:relative;
}
a{ color:inherit; }
img{ max-width:100%; display:block; }
::selection{ background:var(--accent); color:var(--bg); }
:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }

h1, h2, h3{ font-family:var(--font-display); font-weight:600; letter-spacing:-0.01em; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; position:relative; z-index:1; }

/* ---------- eyebrow / section labels ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:7px; height:7px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px 1px var(--accent);
  animation:blink 2.4s ease-in-out infinite;
}
@keyframes blink{ 0%, 100%{ opacity:1; } 50%{ opacity:0.25; } }

/* ---------- section shell ---------- */
section{ padding:110px 0; border-bottom:1px solid var(--line); position:relative; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(28px, 4vw, 42px); margin-bottom:16px; }
.section-head p{ color:var(--text-dim); font-size:16px; }

.reveal{ opacity:0; transform:translateY(18px); transition:opacity 0.7s ease, transform 0.7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- header / nav ---------- */
header{
  position:fixed; top:0; left:0; right:0; z-index:50;
  background:rgba(20,20,20,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
nav.wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:68px;
  max-width:1400px;
  padding:0 40px;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-weight:600; font-size:15px;
  letter-spacing:0.04em; text-decoration:none;
  transition:color 0.2s ease;
}
.logo:hover{ color:var(--accent); }
.logo .mark{
  width:30px; height:30px; border-radius:6px;
  display:flex; align-items:center; justify-content:center;
  color:var(--accent); font-size:13px;
}
.logo .mark img{ width:100%; height:100%; object-fit:contain; display:block; }
.logo .sub{ color:var(--text-dim); font-weight:400; font-size:11px; letter-spacing:0.08em; }

.navlinks{ display:flex; align-items:center; gap:34px; list-style:none; }
.navlinks a{
  text-decoration:none; color:var(--text-dim); font-size:14.5px;
  font-family:var(--font-body); font-weight:500;
  transition:color 0.2s ease;
  position:relative;
}
.navlinks a:hover, .navlinks a[aria-current="page"]{ color:var(--accent); }
.nav-cta{
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:0.06em;
  color:var(--bg) !important; background:var(--accent);
  padding:9px 16px; border-radius:5px; text-transform:uppercase;
  text-decoration:none; font-weight:600;
  transition:transform 0.15s ease, box-shadow 0.15s ease;
}
.nav-cta:hover{ transform:translateY(-1px); box-shadow:0 4px 18px rgba(227,0,43,0.28); }

.lang-switch{
  font-family:var(--font-mono) !important; font-size:12px; letter-spacing:0.06em;
  border:1px solid var(--line-strong); border-radius:4px;
  padding:4px 9px !important;
}
.lang-switch:hover{ border-color:var(--accent); }

.burger{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; z-index:60; }
.burger span{ width:22px; height:2px; background:var(--text); transition:0.25s; }
.burger.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2){ opacity:0; }
.burger.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

@media (max-width: 900px){
  .navlinks{
    position:fixed; inset:0 0 0 auto; width:74%; max-width:320px; top:0; height:100vh;
    background:var(--bg-panel-2); flex-direction:column; align-items:flex-start;
    padding:100px 28px 28px; gap:26px; border-left:1px solid var(--line);
    transform:translateX(100%); transition:transform 0.3s ease; z-index:55;
  }
  .navlinks.open{ transform:translateX(0); }
  .burger{ display:flex; }
}

/* ---------- modal ---------- */
.modal-overlay{
  position:fixed; inset:0; z-index:100; background:rgba(0,0,0,0.6);
  align-items:center; justify-content:center; padding:24px;
  backdrop-filter:blur(3px);
  display:flex;
  opacity:0; visibility:hidden; pointer-events:none;
  transition:opacity 0.25s ease, visibility 0s linear 0.25s;
}
.modal-overlay.open{
  opacity:1; visibility:visible; pointer-events:auto;
  transition:opacity 0.25s ease;
}
.modal-box{
  background:var(--bg-panel); border:1px solid var(--line-strong); border-radius:12px;
  max-width:600px; width:100%; max-height:85vh; overflow-y:auto;
  padding:36px;
  position:relative;
  transform:scale(0.92) translateY(14px); opacity:0;
  transition:transform 0.3s cubic-bezier(0.16,1,0.3,1), opacity 0.25s ease;
}
.modal-overlay.open .modal-box{ transform:scale(1) translateY(0); opacity:1; }
.modal-close{
  position:absolute; top:20px; right:20px; background:none; border:1px solid var(--line);
  border-radius:50%; width:32px; height:32px; color:var(--text-dim); cursor:pointer;
  font-size:16px; line-height:1; display:flex; align-items:center; justify-content:center;
  transition:border-color 0.2s ease, color 0.2s ease;
}
.modal-close:hover{ border-color:var(--accent); color:var(--accent); }
.modal-top{ display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:18px; padding-right:36px; }
.modal-code{ font-family:var(--font-mono); font-size:12.5px; color:var(--text-dimmer); letter-spacing:0.06em; }
.modal-box h3{ font-size:26px; margin-bottom:16px; }
.modal-photo{
  width:100%; max-height:220px; object-fit:cover; border-radius:8px;
  margin-bottom:20px; display:block; background:var(--bg-panel-2);
}
.modal-box .modal-body{ color:var(--text-dim); font-size:15.5px; line-height:1.7; }
.modal-box .modal-body p{ margin-bottom:14px; }
.modal-box .modal-body p:last-child{ margin-bottom:0; }

.status{
  font-family:var(--font-mono); font-size:10.5px; letter-spacing:0.08em; text-transform:uppercase;
  padding:4px 9px; border-radius:20px; border:1px solid; white-space:nowrap;
}
.status.done{ color:var(--accent); border-color:rgba(227,0,43,0.4); }
.status.testing{ color:var(--accent); border-color:rgba(227,0,43,0.32); }
.status.dev, .status.concept{ color:var(--text-dim); border-color:var(--line-strong); }

/* ---------- avatar (leader / member cards) ---------- */
.avatar{
  flex-shrink:0;
  width:64px; height:64px; border-radius:50%;
  background:var(--bg-panel-2); border:1px solid var(--line-strong);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:600; font-size:20px;
  color:var(--accent);
  overflow:hidden;
}
.avatar img{ width:100%; height:100%; object-fit:cover; border-radius:50%; }

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex; align-items:center; gap:10px;
  background:var(--accent); color:var(--bg); font-family:var(--font-mono);
  font-weight:600; font-size:13.5px; letter-spacing:0.05em; text-transform:uppercase;
  padding:15px 26px; border-radius:6px; text-decoration:none;
  transition:transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary:hover{ transform:translateY(-1px); box-shadow:0 6px 22px rgba(227,0,43,0.3); }

/* ---------- footer ---------- */
footer{ padding:64px 0 40px; }
.footer-top{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; margin-bottom:48px; }
.footer-brand .logo{ margin-bottom:14px; }
.footer-brand p{ color:var(--text-dim); font-size:14px; max-width:280px; }
.footer-cols{ display:flex; gap:64px; flex-wrap:wrap; }
.footer-col h4{
  font-family:var(--font-mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--text-dimmer); margin-bottom:14px;
}
.footer-col a, .footer-col p{
  display:block; color:var(--text-dim); text-decoration:none; font-size:14px; margin-bottom:10px;
}
.footer-col a:hover{ color:var(--accent); }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  padding-top:24px; border-top:1px solid var(--line);
  font-family:var(--font-mono); font-size:11.5px; color:var(--text-dimmer);
  letter-spacing:0.03em;
}

@media (max-width: 560px){
  section{ padding:76px 0; }
}