/* Base */
:root{
  --bg0:#070B14;
  --bg1:#0B1020;
  --card: rgba(255,255,255,.08);
  --card2: rgba(255,255,255,.06);
  --stroke: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --muted2: rgba(255,255,255,.55);
  --shadow: 0 18px 60px rgba(0,0,0,.55);
  --radius: 18px;
  --accent: #7C3AED;
  --accent2:#22D3EE;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 700px at 20% 10%, #1b2350 0%, transparent 55%),
              radial-gradient(1000px 800px at 80% 30%, #1a1450 0%, transparent 55%),
              radial-gradient(900px 700px at 40% 90%, #0f3a3a 0%, transparent 55%),
              linear-gradient(180deg, var(--bg0), var(--bg1));
  overflow-x:hidden;
}

.bg{ position:fixed; inset:0; pointer-events:none; }
.noise{
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E");
  opacity:.18;
  mix-blend-mode: overlay;
}
.aurora{
  position:absolute;
  width:520px; height:520px;
  border-radius:999px;
  filter: blur(70px);
  opacity:.28;
  animation: float 18s ease-in-out infinite;
}
.a1{ left:-140px; top:-120px; background: var(--accent); }
.a2{ right:-170px; top:120px; background: var(--accent2); animation-duration: 22s; }
.a3{ left:35%; bottom:-220px; background: #F97316; animation-duration: 26s; }

@keyframes float{
  0%,100%{ transform: translate3d(0,0,0) scale(1); }
  50%{ transform: translate3d(40px,-30px,0) scale(1.06); }
}

.wrap{
  max-width: 780px;
  margin: 0 auto;
  padding: 28px 18px 40px;
}

.topbar{
  display:flex;
  gap:16px;
  align-items: stretch;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.title h1{
  margin:0;
  font-size: 22px;
  letter-spacing: .2px;
}
.title p{
  margin:6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.rate-card{
  min-width: 320px;
  flex: 1;
  max-width: 460px;
  background: var(--card2);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 12px 12px 10px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.rate-row{
  display:flex;
  gap:10px;
  align-items: baseline;
}
.rate-row .label{
  color: var(--muted2);
  font-size: 12px;
}
.rate-row .value{
  font-weight: 700;
  font-size: 16px;
}
.badge{
  margin-left:auto;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(0,0,0,.25);
  color: var(--muted);
}
.rate-sub{
  margin-top: 8px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
}

.rate-sub1{
  margin-top: 8px;
  display:flex;
  align-items:center;
  justify-content: center;
  gap: 10px;
}
.meta{ color: var(--muted2); font-size: 12px; }

.card{
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: calc(var(--radius) + 6px);
  padding: 14px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 100%;  
}

.tabs{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  padding: 4px;
  border-radius: 14px;
  background: rgba(0,0,0,.25);
  border: 1px solid rgba(255,255,255,.10);
  justify-content: center;
  width: fit-content;
  margin: 0 auto;
}
.tab-button{
  border: 0;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
}
.tab-button.active{
  background: rgba(255,255,255,.12);
  color: var(--text);
}

.tab-content{ display:none; padding-top: 14px; }
.tab-content.active{ display:block; }

.grid.two{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:10px;
  margin-bottom: 12px;
}

.mode-button{
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.18);
  color: var(--muted);
  padding: 12px 12px;
  border-radius: 14px;
  cursor:pointer;
  font-weight: 700;
}
.mode-button.active{
  background: rgba(255,255,255,.12);
  color: var(--text);
  border-color: rgba(255,255,255,.22);
}

.input-group{ margin: 10px 0 12px; }
label{
  display:block;
  font-size: 12px;
  color: var(--muted2);
  margin-bottom: 6px;
}
input, select{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  outline: none;
  background: rgba(0,0,0,.20);
  color: var(--text);
  font-size: 14px;
}
input:focus, select:focus{
  border-color: rgba(124,58,237,.55);
  box-shadow: 0 0 0 4px rgba(124,58,237,.18);
}
.hint{
  margin: 8px 0 0;
  color: var(--muted2);
  font-size: 12px;
}

.results{
  display:grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 12px;
}
.result-item{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 12px;
  border-radius: 14px;
  background: rgba(0,0,0,.20);
  border: 1px solid rgba(255,255,255,.10);
}
.result{
  font-weight: 800;
  letter-spacing: .2px;
}

.settings{
  margin-top: 14px;
  border-top: 1px solid rgba(255,255,255,.10);
  padding-top: 12px;
}
.settings summary{
  cursor:pointer;
  user-select:none;
  font-weight: 700;
  color: var(--text);
  list-style:none;
}
.settings summary::-webkit-details-marker{ display:none; }
.settings summary:after{
  content: "▾";
  float:right;
  color: var(--muted);
}
.settings[open] summary:after{ content:"▴"; }

.settings-grid{
  margin-top: 12px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.setting-actions{
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  gap: 10px;
}
.sep{
  border:0;
  height:1px;
  background: rgba(255,255,255,.10);
  margin: 14px 0;
}

.btn{
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px;
  padding: 10px 12px;
  cursor:pointer;
  font-weight: 800;
  background: rgba(0,0,0,.18);
  color: var(--text);
}
.btn:hover{ border-color: rgba(255,255,255,.22); }
.btn-primary{
  background: linear-gradient(135deg, rgba(124,58,237,.95), rgba(34,211,238,.70));
  border-color: rgba(255,255,255,.18);
}
.btn-secondary{
  background: rgba(255,255,255,.08);
  color: var(--text);
}
.btn-ghost{
  background: transparent;
  color: var(--muted);
}

.hidden{ display:none !important; }

.footer{
  margin-top: 14px;
  color: var(--muted2);
  font-size: 12px;
  text-align:center;
}

/* Responsive */
@media (max-width: 860px){
  .settings-grid{ grid-template-columns: 1fr; }
  .rate-card{ max-width: 100%; }
  .grid.two{ grid-template-columns: 1fr; }
}


/* Quick rate controls in header */
.rate-quick{
  margin-top: 10px;
  display:flex;
  gap: 10px;
  align-items:center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.seg{
  display:flex;
  gap: 6px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(0,0,0,.22);
  border: 1px solid rgba(255,255,255,.10);
}
.seg-btn{
  border:0;
  cursor:pointer;
  padding: 8px 10px;
  border-radius: 999px;
  font-weight: 800;
  color: var(--muted);
  background: transparent;
}
.seg-btn.active{
  background: rgba(255,255,255,.12);
  color: var(--text);
}
.quick-manual{
  display:flex;
  gap: 8px;
  align-items:center;
  flex: 1;
  justify-content: flex-end;
}
#quickCustomRate{
  max-width: 210px;
}
@media (max-width: 520px){
  .quick-manual{ justify-content: stretch; width:100%; }
  #quickCustomRate{ max-width: 100%; flex:1; }
}

.tab-button .flag{
  font-size: 16px;
  line-height: 1;
}

.tab-button i{
  font-size: 13px;
  opacity: .9;
  margin: 0 6px;
}

.flag-img{
  width: 18px;
  height: 18px;
  vertical-align: middle;
  border-radius: 3px;
}

.tab-button i{
  font-size: 13px;
  opacity: .85;
}