/* ========== Base (local-only, no fonts/CDN) ========== */
:root{
  --bg: #0b0f16;
  --bg2:#0e1420;
  --panel:#0f1726;
  --panel2:#111b2d;
  --text:#e6edf7;
  --muted:#9fb0c7;
  --line: rgba(255,255,255,.10);
  --shadow: 0 10px 30px rgba(0,0,0,.45);
  --radius: 16px;

  --brand:#4ef0a6;
  --brand2:#2bd48f;

  --btn:#1a2740;
  --btnHover:#203252;
  --danger:#ff5b5b;
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background:
    radial-gradient(1200px 600px at 50% -120px, rgba(78,240,166,.18), transparent 60%),
    radial-gradient(900px 600px at 10% 10%, rgba(102,140,255,.14), transparent 55%),
    linear-gradient(180deg, var(--bg), #070a10 70%);
  color:var(--text);
}

/* ========== Layout ========== */
.app{
  min-height:100%;
  display:flex;
  flex-direction:column;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:22px 28px;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.brand{
  display:flex;
  gap:14px;
  align-items:center;
}
.brand-mark{
  width:44px;
  height:44px;
  border-radius:14px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.22), transparent 55%),
    linear-gradient(135deg, rgba(78,240,166,.85), rgba(43,212,143,.35));
  box-shadow: 0 12px 30px rgba(78,240,166,.18);
  position:relative;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:10px 9px 10px 9px;
  border:2px solid rgba(0,0,0,.35);
  border-radius:12px;
  transform:skewX(-10deg);
  opacity:.35;
}
.brand-title{
  letter-spacing:.08em;
  font-weight:800;
  font-size:22px;
}
.brand-subtitle{
  margin-top:2px;
  font-size:12px;
  color:var(--muted);
}

.topbar-actions{ display:flex; gap:10px; }

.content{
  width:min(1180px, calc(100% - 56px));
  margin: 28px auto 40px;
}

.steps{
  display:grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap:18px;
}

@media (max-width: 980px){
  .steps{ grid-template-columns:1fr; }
  .content{ width:calc(100% - 28px); }
}

/* ========== Step Cards ========== */
.step-card{
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  min-height: 360px;
}

.step-hero{
  padding: 18px 18px 6px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.hero-icon{
  width:86px;
  height:86px;
  border-radius: 24px;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,.14), transparent 60%),
              linear-gradient(180deg, rgba(17,27,45,.9), rgba(15,23,38,.6));
  border:1px solid rgba(255,255,255,.10);
  display:grid;
  place-items:center;
  color: rgba(78,240,166,.95);
  box-shadow: 0 18px 35px rgba(0,0,0,.35);
}
.hero-icon svg{ width:40px; height:40px; }

.step-body{
  padding: 10px 18px 18px;
  display:flex;
  flex-direction:column;
  gap: 10px;
  height:100%;
}

.step-title{
  margin:0;
  font-size:18px;
  letter-spacing:.01em;
}
.step-desc{
  margin:0;
  color:var(--muted);
  line-height:1.45;
  font-size:13px;
}

.step-actions{ margin-top: 6px; display:flex; flex-direction:column; gap:10px; }

.selected-pill{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius: 14px;
  background: rgba(15,23,38,.45);
}
.selected-pill .dot{
  width:10px; height:10px; border-radius:50%;
  background: var(--brand);
  box-shadow: 0 0 0 5px rgba(78,240,166,.12);
}
.selected-text{ font-size:13px; }
.selected-text .muted{ color:var(--muted); font-size:12px; }

.hint{
  font-size:12px;
  color: var(--muted);
}

/* ========== Fields ========== */
.field-row{ display:flex; flex-direction:column; gap:8px; margin-top:10px; }
.field-label{ font-size:12px; color: var(--muted); }

.select, .file, .search{
  width:100%;
  padding: 12px 12px;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(10,14,22,.55);
  color: var(--text);
  outline:none;
}
.select:focus, .file:focus, .search:focus{
  border-color: rgba(78,240,166,.45);
  box-shadow: 0 0 0 4px rgba(78,240,166,.10);
}

.switch-row{
  margin-top:10px;
  display:flex;
  align-items:center;
  gap:10px;
}
.switch{
  position:relative;
  width:44px;
  height:26px;
}
.switch input{
  position:absolute;
  inset:0;
  opacity:0;
}
.switch-ui{
  position:absolute;
  inset:0;
  border-radius: 999px;
  background: rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.14);
  transition:.2s ease;
}
.switch-ui::after{
  content:"";
  position:absolute;
  width:20px;
  height:20px;
  border-radius:50%;
  top:2px; left:2px;
  background: rgba(255,255,255,.85);
  transition:.2s ease;
}
.switch input:checked + .switch-ui{
  background: rgba(78,240,166,.20);
  border-color: rgba(78,240,166,.35);
}
.switch input:checked + .switch-ui::after{
  left: 22px;
  background: rgba(78,240,166,.95);
}
.switch-text{ font-size:13px; color: var(--text); }

/* ========== Buttons ========== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 12px 14px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.12);
  background: var(--btn);
  color: var(--text);
  cursor:pointer;
  transition: .16s ease;
  user-select:none;
  text-decoration:none;
  font-weight:600;
}
.btn:hover{ background: var(--btnHover); transform: translateY(-1px); }
.btn:active{ transform: translateY(0); }

.btn-primary{
  background: linear-gradient(135deg, rgba(78,240,166,.95), rgba(43,212,143,.65));
  color: #052013;
  border-color: rgba(0,0,0,.25);
  box-shadow: 0 14px 30px rgba(78,240,166,.18);
}
.btn-primary:hover{
  filter:saturate(1.1);
  transform: translateY(-1px);
}

.btn-ghost{
  background: rgba(255,255,255,.04);
}

.btn-wide{ width:100%; }

.btn:disabled{
  opacity:.45;
  cursor:not-allowed;
  transform:none !important;
}

.icon-btn{
  width:36px;
  height:36px;
  display:inline-grid;
  place-items:center;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor:pointer;
}
.icon-btn:hover{ background: rgba(255,255,255,.07); }

.ico{ opacity:.9; }

/* ========== Console ========== */
.console{
  margin-top:18px;
  border:1px solid var(--line);
  border-radius: var(--radius);
  overflow:hidden;
  background: rgba(10,14,22,.55);
}
.console-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 14px;
  border-bottom:1px solid var(--line);
}
.console-title{ font-weight:700; }
.console-body{
  margin:0;
  padding: 14px;
  max-height: 260px;
  overflow:auto;
  font-size:12px;
  color: rgba(230,237,247,.92);
}

/* ========== Modal (Meshtastic-like) ========== */
.modal{
  width:min(1100px, calc(100% - 28px));
  border:none;
  padding:0;
  border-radius: 18px;
  background: transparent;
}
.modal::backdrop{
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(6px);
}

.modal-shell{
  background: linear-gradient(180deg, rgba(17,27,45,.96), rgba(10,14,22,.95));
  border:1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  box-shadow: 0 30px 80px rgba(0,0,0,.55);
  overflow:hidden;
}

.modal-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 16px 16px;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.modal-title{
  font-size:16px;
  font-weight:800;
}

.modal-toolbar{
  padding: 12px 16px;
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
@media (max-width: 860px){
  .modal-toolbar{ flex-direction:column; align-items:stretch; }
}

.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.chip{
  padding:8px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor:pointer;
  font-size:12px;
  font-weight:700;
}
.chip:hover{ background: rgba(255,255,255,.07); }
.chip.is-active{
  border-color: rgba(78,240,166,.40);
  background: rgba(78,240,166,.16);
}

.search-wrap{ min-width: 280px; }
@media (max-width: 860px){ .search-wrap{ min-width: unset; } }

.autodetect{
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  padding: 12px 16px;
  background: rgba(255,255,255,.03);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.autodetect-left{
  color: var(--muted);
  font-size:12px;
  line-height:1.35;
}

.modal-body{ padding: 14px 16px 16px; }

.grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 1050px){
  .grid{ grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 760px){
  .grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px){
  .grid{ grid-template-columns: 1fr; }
}

.device-card{
  text-align:left;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  padding: 12px;
  cursor:pointer;
  transition: .16s ease;
  display:flex;
  flex-direction:column;
  gap: 10px;
  min-height: 210px;
}
.device-card:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,.06);
  border-color: rgba(78,240,166,.28);
}

.device-top{ display:flex; flex-direction:column; gap:6px; }
.device-name{
  font-weight:800;
  font-size:13px;
  letter-spacing:.01em;
}
.device-badges{ display:flex; gap:8px; flex-wrap:wrap; }

.badge{
  font-size:11px;
  font-weight:800;
  padding: 5px 8px;
  border-radius: 999px;
  background: rgba(78,240,166,.16);
  border: 1px solid rgba(78,240,166,.22);
  color: rgba(230,255,245,.96);
}
.badge-soft{
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.12);
  color: var(--muted);
}

.device-img{
  flex:1;
  border-radius: 12px;
  background: rgba(0,0,0,.18);
  border:1px solid rgba(255,255,255,.08);
  display:grid;
  place-items:center;
  overflow:hidden;
}
.device-img img{
  width: 100%;
  height: 120px;
  object-fit: contain;
  padding: 10px;
  filter: drop-shadow(0 12px 25px rgba(0,0,0,.45));
}

.device-tags{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
}
.tag{
  font-size:11px;
  padding: 5px 8px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--muted);
}

.modal-foot{
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,.10);
  display:flex;
  justify-content:flex-end;
}