/* ─────────────────────────────────────────────
   DropKey v3 — Dark Industrial Theme
   ───────────────────────────────────────────── */
:root {
  --bg:       #0a0a0f; --bg2: #111118; --surf: #16161f; --surf2: #1e1e2a;
  --brd:      #2a2a3a; --brd2: #383850;
  --accent:   #00e5a0; --accent2: #00b8ff; --accent-dim: rgba(0,229,160,.1);
  --warn:     #ffb347; --error: #ff4d6d; --relay: #c084fc;
  --text:     #e8e8f0; --dim: #7a7a9a; --dimmer: #44445a;
  --mono: "Space Mono",monospace; --sans: "Syne",sans-serif;
  --r: 4px; --rl: 10px;
}
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body { background:var(--bg); color:var(--text); font-family:var(--sans);
       min-height:100vh; display:flex; flex-direction:column; overflow-x:hidden; }

/* ── Background ── */
.bg-grid { position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image: linear-gradient(rgba(0,229,160,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,229,160,.03) 1px,transparent 1px);
  background-size:40px 40px; }
.bg-glow { position:fixed; top:-20vh; left:30%; width:600px; height:600px; z-index:0;
  background:radial-gradient(circle,rgba(0,229,160,.05) 0%,transparent 70%);
  animation:glow 8s ease-in-out infinite alternate; pointer-events:none; }
@keyframes glow { from{transform:translate(0,0) scale(1)} to{transform:translate(60px,40px) scale(1.1)} }

/* ── Reconnect banner (UPGRADED) ── */
.reconnect-banner {
  position:fixed; top:0; left:0; right:0; z-index:200;
  background:linear-gradient(90deg,#1a1a00,#2a2000);
  border-bottom:1px solid var(--warn);
  padding:10px 20px;
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  font-family:var(--mono); font-size:.75rem; color:var(--warn);
  animation:slide-down .3s ease;
}
@keyframes slide-down { from{transform:translateY(-100%)} to{transform:none} }
.spin { animation:spin 1s linear infinite; flex-shrink:0; }
@keyframes spin { to{transform:rotate(360deg)} }

/* Left side of reconnect banner */
.rc-left {
  display:flex; align-items:center; gap:10px;
}
.rc-text {
  display:flex; flex-direction:column; gap:2px;
}
.rc-text #reconnect-msg {
  font-size:.8rem; font-weight:700; color:var(--warn);
}
.rc-text #reconnect-sub {
  font-size:.68rem; color:rgba(255,179,71,.65);
}

/* Right side of reconnect banner */
.rc-right {
  display:flex; align-items:center; gap:10px; flex-shrink:0;
}
.rc-badge {
  background:rgba(0,229,160,.12);
  color:var(--accent);
  border:1px solid rgba(0,229,160,.3);
  border-radius:3px;
  padding:2px 8px;
  font-size:.65rem;
}
#rc-countdown {
  font-size:.7rem; color:rgba(255,179,71,.7);
  min-width:90px; text-align:right;
}

/* Reconnect success flash */
.reconnect-banner.rc-success {
  background:linear-gradient(90deg,#001a0d,#002a15) !important;
  border-bottom-color:var(--accent) !important;
  color:var(--accent) !important;
  transition:background .3s, border-color .3s;
}

.hidden { display:none !important; }

/* ── Toast ── */
.toast { position:fixed; bottom:72px; left:50%; transform:translateX(-50%);
  z-index:300; min-width:300px; max-width:min(90vw,560px); padding:12px 18px;
  border-radius:var(--rl); font-family:var(--mono); font-size:.75rem;
  box-shadow:0 8px 32px rgba(0,0,0,.5); animation:toast-in .25s ease; }
@keyframes toast-in { from{opacity:0;transform:translateX(-50%) translateY(12px)} to{opacity:1;transform:translateX(-50%) translateY(0)} }
.toast-error { background:rgba(30,8,14,.97); border:1px solid var(--error); color:#ffccd5; }
.toast-error b { color:var(--error); }
.toast-warn  { background:rgba(30,22,0,.97);  border:1px solid var(--warn);  color:#ffe8b0; }
.toast-info  { background:rgba(0,15,30,.97);  border:1px solid var(--accent2);color:#b3e8ff; }
.toast-success { background:rgba(0,20,12,.97); border:1px solid var(--accent); color:#b3ffe0; }

/* ── Modal (QR scanner) ── */
.modal-overlay { position:fixed; inset:0; z-index:400; background:rgba(0,0,0,.7);
  display:flex; align-items:center; justify-content:center; }
.modal { background:var(--surf); border:1px solid var(--brd2); border-radius:var(--rl);
  padding:24px; display:flex; flex-direction:column; align-items:center; gap:16px; }
.modal h3 { font-size:1rem; font-weight:700; }
.modal video { width:280px; height:280px; object-fit:cover; border-radius:var(--r); background:#000; }

/* ── Header ── */
header { position:relative; z-index:10; display:flex; align-items:center;
  justify-content:space-between; padding:18px 40px;
  border-bottom:1px solid var(--brd); backdrop-filter:blur(8px); }
.logo { display:flex; align-items:center; gap:8px; font-weight:800; font-size:1.4rem; }
.logo-icon { color:var(--accent); font-size:1.6rem; }
.version-tag { font-family:var(--mono); font-size:.6rem; background:var(--accent-dim);
  color:var(--accent); border:1px solid var(--accent); border-radius:3px; padding:2px 6px; }
.header-right { display:flex; align-items:center; gap:8px; flex-wrap:wrap; justify-content:flex-end; }
.tagline { font-family:var(--mono); font-size:.6rem; color:var(--dim); }
.fp-wrap { font-family:var(--mono); font-size:.65rem; color:var(--accent2);
  background:rgba(0,184,255,.08); border:1px solid rgba(0,184,255,.25); border-radius:3px; padding:3px 8px; }

/* Badges */
.net-badge,.conn-badge { font-family:var(--mono); font-size:.65rem;
  padding:3px 8px; border-radius:3px; border:1px solid var(--brd2);
  transition:color .5s ease, border-color .5s ease; }
.net-excellent{border-color:var(--accent);color:var(--accent)}
.net-good{border-color:#6bff9e;color:#6bff9e}
.net-fair{border-color:var(--warn);color:var(--warn)}
.net-poor{border-color:var(--error);color:var(--error)}
.net-reconnecting{border-color:rgba(255,179,71,.4);color:rgba(255,179,71,.7)}
.conn-badge.direct{border-color:var(--accent);color:var(--accent)}
.conn-badge.relay{border-color:var(--relay);color:var(--relay)}

/* ── Main ── */
main { flex:1; position:relative; z-index:10; display:flex;
  align-items:flex-start; justify-content:center; padding:48px 20px 40px; }

/* ── Screens ── */
.screen { display:none; width:100%; max-width:740px; animation:fadein .3s ease; }
.screen.active { display:block; }
@keyframes fadein { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:none} }

/* ── Hero ── */
.hero-title { font-size:clamp(2rem,5vw,3.2rem); font-weight:800; line-height:1.1;
  letter-spacing:-.03em; margin-bottom:14px; }
.hero-title em { color:var(--accent); font-style:normal; }
.hero-sub { font-family:var(--mono); font-size:.75rem; color:var(--dim);
  margin-bottom:40px; line-height:1.7; }
.role-cards { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:28px; }
@media(max-width:500px){.role-cards{grid-template-columns:1fr}}
.role-card { background:var(--surf); border:1px solid var(--brd); border-radius:var(--rl);
  padding:28px 22px; cursor:pointer; text-align:left; display:flex; flex-direction:column;
  gap:8px; color:var(--text); transition:border-color .2s,background .2s,transform .15s; }
.role-card:hover { border-color:var(--accent); background:var(--surf2); transform:translateY(-2px); }
.role-icon { font-size:1.8rem; }
.role-card strong { font-size:1.1rem; }
.role-card span { font-family:var(--mono); font-size:.65rem; color:var(--dim); }
.feature-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:8px; }
@media(max-width:600px){.feature-grid{grid-template-columns:1fr 1fr}}
.feat { font-family:var(--mono); font-size:.65rem; color:var(--dim);
  background:var(--surf); border:1px solid var(--brd); border-radius:var(--r);
  padding:8px 10px; text-align:center; }

/* ── Screen chrome ── */
.back-btn { background:none; border:none; color:var(--accent); font-family:var(--mono);
  font-size:.75rem; cursor:pointer; padding:0 0 20px 0; opacity:.8; }
.back-btn:hover { opacity:1; }
.screen-title { font-size:1.6rem; font-weight:800; margin-bottom:24px;
  border-bottom:1px solid var(--brd); padding-bottom:14px; }
.status-msg { font-family:var(--mono); font-size:.72rem; color:var(--dim); margin-bottom:8px; }
.ice-state-label { font-family:var(--mono); font-size:.6rem; color:var(--dimmer); margin-top:4px; }

/* ── Steps ── */
.steps { display:flex; flex-direction:column; gap:8px; }
.step { display:flex; gap:20px; background:var(--surf); border:1px solid var(--brd);
  border-radius:var(--rl); padding:22px; animation:fadein .35s ease; }
.step-n { font-family:var(--mono); font-size:.6rem; color:var(--accent);
  min-width:24px; padding-top:4px; letter-spacing:.08em; }
.step-body { flex:1; display:flex; flex-direction:column; gap:10px; }
.step-body h3 { font-size:.95rem; font-weight:700; }
.step-body p { font-family:var(--mono); font-size:.78rem; color:var(--dim); }
.hint { font-family:var(--mono); font-size:.68rem; color:var(--dimmer); font-style:italic; }

/* ── Buttons ── */
.btn-primary { display:inline-flex; align-items:center; justify-content:center;
  background:var(--accent); color:#000; border:none; border-radius:var(--r);
  font-family:var(--sans); font-weight:700; font-size:.85rem;
  padding:10px 24px; cursor:pointer; text-decoration:none; width:fit-content;
  transition:background .2s,transform .15s,box-shadow .2s; }
.btn-primary:hover { background:#00ffb0; transform:translateY(-1px); box-shadow:0 4px 20px rgba(0,229,160,.3); }
.btn-primary:disabled { opacity:.5; cursor:not-allowed; transform:none; }
.btn-secondary { display:inline-flex; align-items:center; justify-content:center;
  background:none; color:var(--dim); border:1px solid var(--brd2); border-radius:var(--r);
  font-family:var(--mono); font-size:.72rem; padding:6px 14px; cursor:pointer;
  transition:border-color .2s,color .2s; }
.btn-secondary:hover { border-color:var(--warn); color:var(--warn); }

/* ── Key display ── */
.key-row { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.key-text { font-family:var(--mono); font-size:1.5rem; font-weight:700;
  color:var(--accent); letter-spacing:.2em; background:var(--bg);
  border:1px solid var(--accent); border-radius:var(--r); padding:10px 14px; }
.copy-btn { background:none; border:1px solid var(--brd); color:var(--dim);
  border-radius:var(--r); font-family:var(--mono); font-size:.68rem;
  padding:4px 10px; cursor:pointer; transition:color .2s,border-color .2s; }
.copy-btn:hover { color:var(--accent); border-color:var(--accent); }

/* ── QR ── */
.qr-wrap { display:flex; flex-direction:column; gap:6px; }
.qr-hint { font-family:var(--mono); font-size:.68rem; color:var(--dim); }
#qr-canvas img { border-radius:var(--r); }

/* ── Timer ── */
.timer-wrap { display:flex; flex-direction:column; gap:4px; max-width:260px; }
.timer-wrap span { font-family:var(--mono); font-size:.68rem; color:var(--dim); }
.timer-bar { height:3px; background:var(--brd); border-radius:2px; overflow:hidden; }
.timer-fill { height:100%; width:100%; background:var(--accent); border-radius:2px;
  transition:width 1s linear,background 1s; }

/* ── Drop zone ── */
.drop-zone { border:2px dashed var(--brd2); border-radius:var(--rl);
  padding:28px 24px; text-align:center; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-family:var(--mono); font-size:.76rem; color:var(--dim);
  transition:border-color .2s,background .2s; }
.drop-zone:hover,.drop-zone.drag-over { border-color:var(--accent); background:var(--accent-dim); }
.drop-icon { font-size:1.8rem; }
.link { color:var(--accent); cursor:pointer; text-decoration:underline; }

/* ── File list ── */
.file-list { display:flex; flex-direction:column; gap:6px; margin-top:6px; }
.file-item { background:var(--bg); border:1px solid var(--brd); border-radius:var(--r);
  padding:10px 14px; display:flex; flex-direction:column; gap:6px; }
.file-name { font-size:.85rem; font-weight:600; word-break:break-all; }
.file-size { font-family:var(--mono); font-size:.7rem; color:var(--dim); }
.file-remove { background:none; border:none; color:var(--dimmer); cursor:pointer;
  font-size:.8rem; align-self:flex-end; margin-top:-22px; }
.file-remove:hover { color:var(--error); }

/* File complete state */
.file-done .prog-fill {
  background: var(--accent) !important;
  transition: background 0.4s ease;
}

/* ── Progress (per-file) ── */
.file-progress { display:flex; flex-direction:column; gap:4px; }
.prog-bar { height:5px; background:var(--brd); border-radius:3px; overflow:hidden; }
.prog-fill { height:100%; width:0%;
  background:linear-gradient(90deg,var(--accent),var(--accent2));
  border-radius:3px; transition:width .25s ease-out; }
.prog-fill.op-paused { opacity:0.45; transition:none; }
.prog-fill.op-failed { background:var(--error) !important; }
.prog-label { font-family:var(--mono); font-size:.7rem; color:var(--dim); }
.prog-speed,.prog-int { font-family:var(--mono); font-size:.65rem; color:var(--dimmer); }

/* ── Overall Progress Bar (NEW) ── */
.overall-progress {
  background: var(--surf2);
  border: 1px solid var(--brd2);
  border-radius: var(--rl);
  padding: 14px 18px;
  margin-bottom: 14px;
  animation: fadein .3s ease;
}
.overall-progress.op-all-done {
  border-color: var(--accent);
}
.op-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--dim);
  margin-bottom: 8px;
  gap: 8px;
  flex-wrap: wrap;
}
.op-bar {
  height: 8px;
  background: var(--brd);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 6px;
}
.op-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 4px;
  transition: width .3s ease-out;
}
.op-fill.op-paused {
  opacity: 0.45;
  transition: none;
}
.op-fill.op-failed {
  background: var(--error) !important;
  transition: background .3s;
}
.op-fill.op-done {
  background: var(--accent) !important;
  transition: background .4s ease, width .3s ease-out;
}
.op-footer {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--dimmer);
}
#op-pct, #rop-pct {
  font-weight: 700;
  color: var(--dim);
}

/* ── Transfer Failed Card ── */
.fail-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: rgba(255,77,109,.07);
  border: 1px solid rgba(255,77,109,.25);
  border-radius: var(--rl);
  padding: 16px 18px;
  margin-top: 10px;
}
.fail-icon { font-size:1.6rem; flex-shrink:0; }
.fail-body { flex:1; }
.fail-title {
  font-size:.9rem; font-weight:700; color:var(--error);
  margin-bottom:6px;
}
.fail-msg {
  font-family:var(--mono); font-size:.76rem;
  color:var(--dim); margin-bottom:10px; line-height:1.6;
}
.fail-tip {
  font-family:var(--mono); font-size:.68rem;
  color:var(--dimmer); margin-bottom:12px;
}

/* ── Key input (receiver) ── */
.key-input-row { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.key-input { background:var(--bg); border:1px solid var(--brd); border-radius:var(--r);
  color:var(--text); font-family:var(--mono); font-size:1.2rem; font-weight:700;
  letter-spacing:.18em; padding:10px 14px; width:230px; text-transform:uppercase;
  transition:border-color .2s; }
.key-input:focus { outline:none; border-color:var(--accent); }

/* ── Pulse ── */
.pulse { width:10px; height:10px; border-radius:50%; background:var(--accent);
  animation:pulse 1.5s infinite; }
@keyframes pulse {
  0%   { box-shadow:0 0 0 0 rgba(0,229,160,.5); }
  70%  { box-shadow:0 0 0 10px rgba(0,229,160,0); }
  100% { box-shadow:0 0 0 0 rgba(0,229,160,0); }
}

/* ── Transfer controls ── */
.transfer-controls { display:flex; align-items:center; gap:10px; margin-bottom:4px; }

/* ── Download list ── */
.download-list { display:flex; flex-direction:column; gap:8px; }
.dl-link { display:inline-block; background:var(--accent); color:#000;
  border-radius:var(--r); padding:10px 20px; font-weight:700; font-size:.85rem;
  text-decoration:none; width:fit-content;
  transition:background .2s,transform .15s; }
.dl-link:hover { background:#00ffb0; transform:translateY(-1px); }

/* ── Done screen ── */
.done-wrap { text-align:center; display:flex; flex-direction:column;
  align-items:center; gap:16px; padding:60px 0; }
.done-icon { font-size:3.5rem; }
.done-wrap h2 { font-size:2rem; font-weight:800; }
.done-wrap p  { font-family:var(--mono); font-size:.82rem; color:var(--dim); }

/* ── Footer ── */
footer { position:relative; z-index:10; text-align:center; padding:18px;
  border-top:1px solid var(--brd); font-family:var(--mono); font-size:.6rem; color:var(--dimmer); }

/* ── Responsive ── */
@media(max-width:600px) {
  header { padding:14px 16px; }
  .tagline,.fp-wrap { display:none; }
  main { padding:32px 14px; }
  .key-input { width:180px; font-size:1rem; }
  .key-text { font-size:1.1rem; letter-spacing:.12em; }
  .feature-grid { grid-template-columns:1fr 1fr; }
  .rc-right { display:none; }
  .op-header { font-size:.65rem; }
}