/* =====================================================================
   USNDA — Drone Crucible Video Library
   Tactical / military aesthetic to match flydrones.io
   ===================================================================== */

:root{
  --bg:        #0a0c0a;
  --bg-2:      #0f120e;
  --panel:     #14170f;
  --panel-2:   #191d13;
  --line:      #2b3122;
  --line-2:    #3a4230;
  --text:      #e9e7dc;
  --muted:     #8f9480;
  --amber:     #d9a441;
  --amber-2:   #f0c04a;
  --alert:     #c0392b;
  --nominal:   #7bbf5a;
  --mono:      'Share Tech Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --display:   'Oswald', 'Arial Narrow', sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(217,164,65,.06), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  color:var(--text);
  font-family:var(--mono);
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{color:inherit}
img{max-width:100%;display:block}

/* subtle scanline grid overlay */
body::before{
  content:"";
  position:fixed;inset:0;pointer-events:none;z-index:1;
  background-image:linear-gradient(rgba(255,255,255,.015) 1px, transparent 1px);
  background-size:100% 3px;
  mix-blend-mode:overlay;
}

/* USNDA seal watermark (url is relative to this stylesheet -> assets/logo.png) */
body::after{
  content:"";
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:url('logo.png');
  background-repeat:no-repeat;
  background-position:center 42%;
  background-size:min(720px,88vw);
  opacity:.06;
}

/* ---------------- Status bar ---------------- */
.statusbar{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:1.4rem;
  padding:.5rem 1.2rem;
  background:#060806;
  border-bottom:1px solid var(--line);
  font-size:.72rem;letter-spacing:.12em;color:var(--muted);
}
.statusbar .stat b{color:var(--text);font-weight:400;margin-right:.35rem}
.status-nominal b{color:var(--muted)}
.status-nominal{color:var(--nominal)}

/* ---------------- Ticker ---------------- */
.ticker{
  position:relative;z-index:2;overflow:hidden;white-space:nowrap;
  background:var(--amber);color:#141306;
  border-bottom:1px solid #000;
  font-size:.78rem;letter-spacing:.14em;
}
.ticker-track{display:inline-flex;animation:scroll 40s linear infinite}
.ticker-track span{padding:.4rem 0}
.ticker b{font-weight:700}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------------- Header ---------------- */
.site-header{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:.7rem 1.4rem;
  background:rgba(8,10,7,.9);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none}
.brand-seal{width:34px;height:34px;object-fit:contain}
.brand-text b{font-family:var(--display);font-weight:700;letter-spacing:.18em;font-size:1.05rem;display:block}
.brand-text small{color:var(--muted);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase}

/* ---------------- Buttons ---------------- */
.btn{
  display:inline-block;cursor:pointer;text-decoration:none;text-align:center;
  font-family:var(--display);font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  background:var(--amber);color:#141306;border:1px solid var(--amber);
  padding:.75rem 1.6rem;font-size:.85rem;
  transition:background .15s, color .15s, box-shadow .15s;
  clip-path:polygon(0 0,100% 0,100% 70%,calc(100% - 10px) 100%,0 100%);
}
.btn:hover{background:var(--amber-2);box-shadow:0 0 0 1px var(--amber-2), 0 6px 20px rgba(217,164,65,.25)}
.btn-sm{padding:.5rem 1.1rem;font-size:.72rem}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------------- Shared ---------------- */
.eyebrow{color:var(--amber);letter-spacing:.28em;font-size:.72rem;text-transform:uppercase;margin-bottom:.8rem}
main{position:relative;z-index:2}

/* ---------------- Hero + signup ---------------- */
.hero{border-bottom:1px solid var(--line);padding:3.4rem 1.4rem 3rem}
.hero-inner{
  max-width:1160px;margin:0 auto;
  display:grid;grid-template-columns:1.1fr .9fr;gap:2.6rem;align-items:center;
}
.hero-copy h1{
  font-family:var(--display);font-weight:700;text-transform:uppercase;
  font-size:clamp(2.4rem,6vw,4rem);line-height:.98;letter-spacing:.01em;margin-bottom:1.1rem;
}
.mission{color:#dcdacd;max-width:48ch;margin-bottom:1.1rem;font-size:.95rem;line-height:1.7;border-left:2px solid var(--amber);padding-left:1rem}
.lede{color:#cfcdc0;max-width:40ch;margin-bottom:1.6rem}
.hero-meta{list-style:none;display:flex;flex-wrap:wrap;gap:1.6rem;font-size:.8rem;color:var(--muted)}
.hero-meta b{display:block;color:var(--amber);letter-spacing:.16em;font-size:.68rem;text-transform:uppercase;margin-bottom:.2rem}

/* signup card */
.signup-card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line-2);
  padding:1.6rem 1.5rem 1.8rem;
  box-shadow:0 24px 60px rgba(0,0,0,.5);
  position:relative;
}
.signup-card::before{
  content:"";position:absolute;top:-1px;left:-1px;width:26px;height:26px;
  border-top:2px solid var(--amber);border-left:2px solid var(--amber);
}
.signup-card::after{
  content:"";position:absolute;bottom:-1px;right:-1px;width:26px;height:26px;
  border-bottom:2px solid var(--amber);border-right:2px solid var(--amber);
}
.signup-head{display:flex;align-items:center;gap:.5rem;color:var(--amber);font-size:.7rem;letter-spacing:.24em;margin-bottom:.8rem}
.signup-head .dot{width:8px;height:8px;border-radius:50%;background:var(--nominal);box-shadow:0 0 8px var(--nominal);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.signup-card h2{font-family:var(--display);font-weight:600;font-size:1.12rem;line-height:1.25;margin-bottom:1.2rem;text-transform:uppercase;letter-spacing:.02em}
.signup-card label{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem}
.req{color:var(--alert)}
.signup-card input{
  width:100%;margin-top:.4rem;
  background:#0a0c07;border:1px solid var(--line-2);color:var(--text);
  padding:.7rem .8rem;font-family:var(--mono);font-size:.9rem;letter-spacing:.03em;
}
.signup-card input:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 1px var(--amber)}
.form-status{margin-top:.9rem;font-size:.78rem;min-height:1.2em;letter-spacing:.06em}
.form-status.ok{color:var(--nominal)}
.form-status.err{color:var(--alert)}

/* ---------------- Library ---------------- */
.library{max-width:1160px;margin:0 auto;padding:3.2rem 1.4rem 4rem}
.section-head{margin-bottom:2rem}
.section-head h2{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:.02em}
.section-sub{color:var(--muted);margin-top:.4rem}

.video-grid{
  display:grid;gap:1.3rem;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
}
.video-tile{
  display:flex;flex-direction:column;text-decoration:none;color:inherit;
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  border:1px solid var(--line);
  transition:transform .15s, border-color .15s, box-shadow .15s;
}
.video-tile:hover{transform:translateY(-3px);border-color:var(--amber);box-shadow:0 14px 30px rgba(0,0,0,.5)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#000;border-bottom:1px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.video-tile:hover .thumb img{transform:scale(1.05)}
.thumb .play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(6,8,5,.15);opacity:0;transition:opacity .15s;
}
.video-tile:hover .thumb .play{opacity:1}
.thumb .play svg{width:56px;height:56px;filter:drop-shadow(0 4px 12px rgba(0,0,0,.6))}
.thumb .idx{
  position:absolute;top:.5rem;left:.5rem;z-index:2;
  background:var(--amber);color:#141306;font-family:var(--display);font-weight:700;
  font-size:.72rem;letter-spacing:.1em;padding:.15rem .5rem;
}
.tile-body{padding:.9rem 1rem 1.1rem}
.tile-title{font-family:var(--display);font-weight:500;font-size:1.02rem;line-height:1.25;letter-spacing:.01em}
.tile-meta{margin-top:.5rem;color:var(--muted);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;display:flex;gap:.6rem;align-items:center}
.tile-meta .tag{color:var(--amber)}

/* loading / fallback */
.grid-loading{
  grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:.7rem;
  color:var(--muted);letter-spacing:.2em;font-size:.8rem;padding:3rem 0;
}
.spinner{width:14px;height:14px;border:2px solid var(--line-2);border-top-color:var(--amber);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.grid-fallback-note{margin-top:1.6rem;color:var(--muted);font-size:.82rem;letter-spacing:.06em}
.grid-fallback-note a{color:var(--amber)}

/* ---------------- Footer ---------------- */
.site-footer{
  position:relative;z-index:2;
  border-top:1px solid var(--line);
  padding:2.2rem 1.4rem;display:flex;flex-wrap:wrap;gap:1rem 2rem;align-items:center;
  background:#060806;
}
.foot-brand b{font-family:var(--display);font-weight:700;letter-spacing:.2em;font-size:1.1rem;display:block}
.foot-brand small{color:var(--muted);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase}
.foot-line{color:var(--muted);font-size:.8rem}
.foot-line a{color:var(--amber)}
.foot-social{display:flex;gap:.6rem;margin-left:auto}
.foot-social a{border:1px solid var(--line-2);padding:.35rem .6rem;font-size:.72rem;letter-spacing:.1em;color:var(--muted);text-decoration:none}
.foot-social a:hover{border-color:var(--amber);color:var(--amber)}
.copyright{width:100%;color:#5c6153;font-size:.7rem;letter-spacing:.08em;border-top:1px solid var(--line);padding-top:1rem;margin-top:.4rem}

/* ---------------- Responsive ---------------- */
@media (max-width:820px){
  .hero-inner{grid-template-columns:1fr;gap:2rem}
  .hero{padding-top:2.4rem}
}