:root {
  --bg: #0a0e1a;
  --bg2: #0f1524;
  --panel: rgba(22, 29, 48, 0.72);
  --panel-border: rgba(120, 150, 220, 0.14);
  --text: #e8eefc;
  --muted: #8f9cbf;
  --field-bg: rgba(9, 13, 24, 0.6);
  --field-border: rgba(120, 150, 220, 0.18);
  --accent: #38bdf8;
  --accent2: #818cf8;
  --grad: linear-gradient(120deg, #38bdf8 0%, #818cf8 55%, #c084fc 100%);
}

[data-theme="light"] {
  --bg: #eef2fb;
  --bg2: #e3e9f7;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-border: rgba(60, 90, 160, 0.14);
  --text: #16203a;
  --muted: #5a6684;
  --field-bg: rgba(255, 255, 255, 0.9);
  --field-border: rgba(60, 90, 160, 0.2);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, var(--bg2), var(--bg)) fixed;
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.app-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 40px;
  position: relative;
  z-index: 1;
}

.bg-orbs {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.bg-orbs::before, .bg-orbs::after {
  content: ''; position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.35;
}
.bg-orbs::before {
  width: 500px; height: 500px; top: -120px; right: -80px;
  background: radial-gradient(circle, #38bdf8, transparent 70%);
}
.bg-orbs::after {
  width: 480px; height: 480px; bottom: -140px; left: -100px;
  background: radial-gradient(circle, #c084fc, transparent 70%);
  opacity: 0.28;
}

/* Header */
.header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  margin-bottom: 16px;
  animation: fadeUp 0.5s ease both;
}
.logo-badge {
  width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center;
  font-size: 26px; background: var(--grad);
  box-shadow: 0 8px 30px -6px rgba(56,189,248,0.5);
  animation: pulseGlow 3s ease-in-out infinite;
}
.title { font-size: clamp(24px, 5vw, 36px); font-weight: 700; margin: 0; letter-spacing: -0.02em; }
.title-pro {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; font-weight: 700;
}
.tagline { margin: 2px 0 0; color: var(--muted); font-size: 13px; font-weight: 300; }
.theme-btn {
  width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--panel-border);
  background: var(--panel); font-size: 20px; cursor: pointer; flex-shrink: 0;
  transition: transform 0.2s, background 0.2s;
}
.theme-btn:hover { transform: translateY(-2px) rotate(-8deg); }

/* Proto badges */
.proto-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px;
  animation: fadeUp 0.6s ease both; animation-delay: 0.05s; }
.proto-badge {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 500;
  padding: 4px 11px; border-radius: 999px; color: var(--pc, var(--accent));
  border: 1px solid color-mix(in srgb, var(--pc, var(--accent)) 40%, transparent);
  background: color-mix(in srgb, var(--pc, var(--accent)) 12%, transparent);
}

/* Grid */
.grid-main { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 880px) { .grid-main { grid-template-columns: 1fr; } }

/* Panel */
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 22px; padding: 22px;
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px -30px rgba(0,0,0,0.6);
  display: flex; flex-direction: column;
  animation: fadeUp 0.6s ease both; animation-delay: 0.1s;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.panel-title { font-size: 15px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin: 0; }
.counter-chip {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; padding: 4px 10px;
  border-radius: 999px; background: var(--field-bg); border: 1px solid var(--field-border);
  color: var(--muted);
}
.counter-chip.ok { color: #34d399; border-color: rgba(52,211,153,0.4); }

/* Segmented pills */
.seg-row { display: flex; flex-wrap: wrap; gap: 6px; background: var(--field-bg);
  padding: 5px; border-radius: 14px; border: 1px solid var(--field-border); }
.seg-pill {
  flex: 1; min-width: 60px; border: none; background: transparent; cursor: pointer;
  color: var(--muted); font-family: 'Space Grotesk', sans-serif; font-weight: 500;
  font-size: 13px; padding: 8px 4px; border-radius: 10px; transition: all 0.2s;
}
.seg-pill:hover { color: var(--text); }
.seg-pill-active { background: var(--grad); color: #fff; }

/* Fields */
.field, .field-mono {
  width: 100%; background: var(--field-bg); border: 1px solid var(--field-border);
  border-radius: 12px; color: var(--text); padding: 11px 13px; font-size: 14px;
  transition: border 0.2s, box-shadow 0.2s; outline: none;
  font-family: 'Space Grotesk', sans-serif;
}
.field:focus, .field-mono:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(56,189,248,0.18);
}
.field:disabled { opacity: 0.45; cursor: not-allowed; }
.field-mono {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.6;
  min-height: 200px; resize: vertical; word-break: break-all;
}
.field-mono.short { min-height: 60px; }
.field-mono.output { min-height: 240px; background: rgba(0,0,0,0.28); }
[data-theme="light"] .field-mono.output { background: rgba(240,244,252,0.9); }
.field-label { display: block; font-size: 12px; color: var(--muted); margin: 14px 0 6px; font-weight: 500; }

/* Dropzone */
.dropzone {
  border: 2px dashed var(--field-border); border-radius: 16px; padding: 40px 20px;
  text-align: center; cursor: pointer; transition: all 0.2s; min-height: 200px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--field-bg);
}
.dropzone:hover, .dropzone-active {
  border-color: var(--accent); background: rgba(56,189,248,0.08); transform: scale(1.01);
}

/* Settings */
.settings { margin-top: 18px; border-top: 1px solid var(--panel-border); padding-top: 6px; }
.settings-head {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  background: none; border: none; color: var(--text); cursor: pointer; padding: 12px 2px;
  font-family: 'Space Grotesk', sans-serif; font-weight: 500; font-size: 14px;
}
.chevron { transition: transform 0.25s; color: var(--muted); }
.chevron.open { transform: rotate(180deg); }
.settings-body { animation: fadeUp 0.3s ease both; }

.aras-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 14px; margin: 14px 0 4px; border-radius: 14px;
  background: var(--field-bg); border: 1px solid var(--field-border);
}
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Fingerprint buttons */
.fp-row { display: flex; flex-wrap: wrap; gap: 6px; }
.fp-btn {
  display: flex; align-items: center; gap: 6px; font-size: 12px; text-transform: capitalize;
  padding: 7px 12px; border-radius: 10px; cursor: pointer; color: var(--muted);
  background: var(--field-bg); border: 1px solid var(--field-border); transition: all 0.2s;
  font-family: 'JetBrains Mono', monospace;
}
.fp-btn:hover { color: var(--text); border-color: var(--accent); }
.fp-active { color: var(--text); border-color: var(--accent); background: rgba(56,189,248,0.14); }
.fp-dot { width: 8px; height: 8px; border-radius: 50%; }

/* Toggle */
.toggle {
  width: 50px; height: 28px; border-radius: 999px; border: none; cursor: pointer;
  background: var(--field-border); position: relative; transition: background 0.25s; flex-shrink: 0;
}
.toggle-on { background: var(--grad); }
.toggle-glow { box-shadow: 0 0 16px 2px rgba(129,140,248,0.55); }
.toggle-knob {
  position: absolute; top: 3px; left: 3px; width: 22px; height: 22px; border-radius: 50%;
  background: #fff; transition: transform 0.25s cubic-bezier(.34,1.56,.64,1);
}
.toggle-on .toggle-knob { transform: translateX(22px); }

/* Buttons */
.btn-primary {
  margin-top: 20px; width: 100%; padding: 15px; border: none; border-radius: 14px;
  background: var(--grad); color: #fff; font-family: 'Space Grotesk', sans-serif;
  font-weight: 700; font-size: 15px; cursor: pointer; letter-spacing: 0.02em;
  transition: transform 0.15s, box-shadow 0.2s; box-shadow: 0 10px 30px -8px rgba(56,189,248,0.5);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 16px 40px -8px rgba(129,140,248,0.6); }
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.6; cursor: wait; }

.btn-secondary {
  padding: 11px 16px; border-radius: 12px; border: 1px solid var(--field-border);
  background: var(--field-bg); color: var(--text); cursor: pointer; font-weight: 500;
  font-family: 'Space Grotesk', sans-serif; font-size: 14px; transition: all 0.2s;
}
.btn-secondary:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }

.out-actions { display: flex; gap: 10px; margin-top: 16px; }

/* Output extras */
.breakdown { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.warn {
  margin-top: 12px; font-size: 12.5px; color: #fbbf24; padding: 8px 12px; border-radius: 10px;
  background: rgba(251,191,36,0.1); border: 1px solid rgba(251,191,36,0.3);
}
.empty-out {
  min-height: 240px; display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-align: center; border: 1px dashed var(--field-border);
  border-radius: 12px; color: var(--muted);
}
.tip {
  margin-top: 14px; font-size: 13px; color: var(--accent); font-weight: 500;
  animation: fadeUp 0.4s ease both;
}
.flex-1 { flex: 1; }

/* Toast */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 50;
  background: var(--grad); color: #fff; padding: 11px 22px; border-radius: 999px;
  font-weight: 500; font-size: 14px; box-shadow: 0 12px 40px -8px rgba(56,189,248,0.6);
  animation: toastIn 0.3s cubic-bezier(.34,1.56,.64,1);
}

/* Spinner */
.spinner {
  width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff; border-radius: 50%; display: inline-block;
  animation: spin 0.7s linear infinite;
}

/* Footer */
.footer {
  margin-top: 32px; text-align: center; color: var(--muted); font-size: 12px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px;
}
.footer a { color: var(--accent); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer .sep { opacity: 0.4; }

/* Animations */
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, -12px); } to { opacity: 1; transform: translate(-50%, 0); } }
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 8px 30px -6px rgba(56,189,248,0.5); }
  50% { box-shadow: 0 8px 40px -4px rgba(129,140,248,0.7); }
}

.hidden { display: none; }