/* ==========================================================================
   THEME: Aqua/Blue palette centered on #48acc0
   - These CSS variables control the site's color system.
   - Tweak values here to quickly restyle the theme.
   ========================================================================== */
:root{
  --bg: #f5f6f7;            /* Very light neutral background */
  --card: rgba(255,255,255,0.65); /* Translucent surfaces for glass effect */
  --ink: #111314;           /* Primary text (nearly black) */
  --muted: #5f646a;         /* Secondary text */
  --accent: #0a84ff;        /* iOS/macOS system blue */
  --accent-2: #66aaff;      /* Lighter blue for subtle gradients */
  --chip: rgba(255,255,255,0.55);  /* Chip idle (translucent) */
  --chip-active: rgba(255,255,255,0.75); /* Chip active */
  --ok: #34c759;            /* System green */
  --warn: #ffcc00;          /* System yellow */
  --ls: #34b7f1;            /* LIGHTSPEED tint */
  --bolt: #30d158;          /* Bolt tint */
  --uni: #5ac8f5;           /* Unifying tint */
  --ring: rgba(0,0,0,0.08); /* Hairline borders */
}

*{box-sizing:border-box}
html,body{height:100%}

/* Page background:
   - Two large radial gradients in aqua (#48acc0) for a soft glow.
   - Falls back to --bg for the base layer. */
body{
  margin:0;
  font-family: -apple-system, "SF Pro Text", system-ui, Segoe UI, Roboto, Inter, Arial, sans-serif;
  color:var(--ink);
  background: radial-gradient(900px 500px at 50% -10%, rgba(10,132,255,0.08) 0, transparent 60%),
              radial-gradient(700px 400px at 100% 0, rgba(10,132,255,0.06) 0, transparent 55%),
              var(--bg);
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-attachment: fixed, fixed, scroll;
  background-size: 900px 500px, 700px 400px, auto;
  background-position: 50% 0, 100% 0, 0 0;
}

.header{
  text-align:center;
  padding:48px 16px 8px;
}
.logo{
  display:inline-block;
  padding:8px;
  border-radius:12px;
  line-height:1;
  margin-bottom:6px;
  background: transparent;
}
.logo-img{
  max-width:240px;   /* caps size on desktop */
  width:100%;        /* responsive scaling */
  height:auto;       /* maintain aspect ratio */
  display:block;
}
h1{
  margin:0 0 6px;
  font-size:clamp(26px,4vw,40px);
  letter-spacing:-0.02em;
  color:var(--ink);
  font-weight:700;
}
.sub{color:var(--muted)}

.container{
  max-width:1200px;
  margin:24px auto 56px;
  padding:0 16px;
}

/* Controls panel:
   - Slightly translucent card with a blue-tinted ring and shadow
   - Uses color-mix to keep it readable over the background glow */
.controls{
  background: var(--card);
  border:1px solid rgba(255,255,255,0.35);
  border-radius:16px;
  padding:16px;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

/* Search row:
   - Center the search input on larger screens (paired with input max-width) */
.search-row{display:flex; gap:12px; justify-content:center}

/* Wider, responsive input:
   - width:80% lets it breathe on desktop
   - max-width:800px caps it so it doesn't get too long
   - remains mobile-friendly due to percentage width */
#searchInput{
  width:80%;
  max-width:800px;
  padding:14px 16px;
  font-size:16px;
  border-radius:12px;
  border:1px solid var(--ring);
  background: rgba(255,255,255,0.75);
  color:var(--ink);
  outline:none;
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
}
#searchInput:focus{ box-shadow:0 0 0 3px rgba(10,132,255,0.25); border-color:#0a84ff }

.mode-row, .filter-row{display:flex; gap:8px; margin-top:12px; flex-wrap:wrap}

.mode-btn{
  border:1px solid var(--ring);
  background:var(--chip);
  color:var(--ink);
  padding:10px 12px;
  border-radius:999px;
  cursor:pointer;
  backdrop-filter: blur(8px);
}
.mode-btn.active{background:var(--chip-active)}

.chip{
  border:1px solid var(--ring);
  background:var(--chip);
  color:var(--ink);
  padding:8px 12px;
  border-radius:999px;
  cursor:pointer;
  backdrop-filter: blur(8px);
}
.chip.active{background:var(--chip-active)}

.results{
  margin-top:18px;
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap:14px;
}

.card{
  background:var(--card);
  border:1px solid rgba(255,255,255,0.35);
  border-radius:16px;
  padding:16px;
  display:flex;
  flex-direction:column;
  gap:10px;
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.card .title{
  font-weight:650;
  line-height:1.2;
}

.badges{display:flex; gap:6px; flex-wrap:wrap}
.badge{
  font-size:12px;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid var(--ring);
  background: rgba(255,255,255,0.6);
  color:var(--muted);
  backdrop-filter: blur(6px);
}
.badge.ls{ color: var(--ls); border-color: color-mix(in srgb, var(--ls) 35%, var(--ring)); }
.badge.bolt{ color: var(--bolt); border-color: color-mix(in srgb, var(--bolt) 35%, var(--ring)); }
.badge.uni{ color: var(--uni); border-color: color-mix(in srgb, var(--uni) 35%, var(--ring)); }

.meta{color:var(--muted); font-size:13px}
.actions{display:flex; gap:8px; flex-wrap:wrap; margin-top:6px}
.btn{
  display:inline-flex; align-items:center; gap:6px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--ring);
  background: rgba(255,255,255,0.7);
  color:var(--ink);
  text-decoration:none;
  backdrop-filter: blur(8px);
}
.btn:hover{border-color:#0a84ff}


.btn-receiver{
  background: rgba(255,255,255,0.7);
  color: var(--ink);
  font-weight:600;
  border:1px solid var(--ring);
  backdrop-filter: blur(8px);
}
.btn-receiver:hover{border-color:#0a84ff}

.btn-device{
  background: linear-gradient(180deg, #0a84ff, #007aff);
  color:#fff; font-weight:600;
  box-shadow: 0 6px 16px rgba(0,122,255,0.25);
  border-color: transparent;
}
.btn.small{padding:8px 10px; font-size:14px}

/* Empty state:
   - Light dashed outline and subtle background for visibility */
.empty{
  grid-column: 1/-1;
  text-align:center;
  padding:40px 12px;
  color:var(--muted);
  border:1px dashed var(--ring);
  border-radius:12px;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(6px);
}

.footer{
  text-align:center;
  padding:24px 16px 40px;
  color:var(--muted);
}

/* Receiver cards in “Search by Receiver” mode */
.rcv{
  display:flex; flex-direction:column; gap:8px;
}
.rcv .title{font-weight:650}
.rcv .rcv-type{font-size:12px; color:var(--muted)}