:root {
  --bg: #090615;
  --panel: rgba(22, 14, 42, 0.78);
  --panel-strong: rgba(31, 20, 58, 0.92);
  --text: #fbf7ff;
  --muted: #b9aecd;
  --violet: #9d7cff;
  --cyan: #54f2d2;
  --pink: #ff5fa2;
  --amber: #ffd166;
  --danger: #ff6b6b;
  --success: #65f2a9;
  --line: rgba(255,255,255,0.13);
  --line-strong: rgba(84,242,210,0.42);
  --shadow: 0 28px 90px rgba(0,0,0,0.36);
  --radius: 26px;
  --mono: "JetBrains Mono", "Cascadia Mono", Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--text);
  background:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px),
    radial-gradient(circle at 12% 8%, rgba(157,124,255,0.36), transparent 34rem),
    radial-gradient(circle at 84% 4%, rgba(84,242,210,0.26), transparent 32rem),
    radial-gradient(circle at 50% 92%, rgba(255,95,162,0.18), transparent 28rem),
    var(--bg);
  background-size: 48px 48px, 48px 48px, auto, auto, auto, auto;
}
a { color: inherit; text-decoration: none; }
button, select, textarea { font: inherit; }
code, .result-value { font-family: var(--mono); word-break: break-all; }
.orb { position: fixed; border-radius: 999px; filter: blur(42px); opacity: .55; pointer-events: none; }
.orb-a { width: 180px; height: 180px; left: -40px; top: 28%; background: var(--violet); }
.orb-b { width: 220px; height: 220px; right: -60px; top: 10%; background: var(--cyan); }
.topbar {
  width: min(1440px, calc(100% - 48px));
  margin: 24px auto 0;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(13,8,28,.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark {
  width: 54px; height: 54px; display: grid; place-items: center;
  border-radius: 18px; font-weight: 950; color: #070411;
  background: linear-gradient(135deg, var(--cyan), var(--violet), var(--pink));
  letter-spacing: -.05em;
}
.brand strong { display: block; font-size: 1.08rem; }
.brand small { display: block; color: var(--muted); margin-top: 3px; }
.nav-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px; }
.nav-tags span, .detected {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.055);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: .88rem;
  font-weight: 800;
}
.page-grid {
  width: min(1440px, calc(100% - 48px));
  margin: 24px auto 70px;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, .7fr);
  gap: 22px;
}
.hero-terminal, .glass-panel, .sample-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(31,20,58,.84), rgba(13,8,28,.78));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
  overflow: hidden;
}
.hero-terminal { min-height: 430px; }
.terminal-head {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.045);
}
.terminal-head span { width: 11px; height: 11px; border-radius: 999px; background: var(--pink); }
.terminal-head span:nth-child(2) { background: var(--amber); }
.terminal-head span:nth-child(3) { background: var(--cyan); }
.terminal-head b { margin-left: 8px; color: var(--muted); font: 850 .76rem var(--mono); letter-spacing: .14em; }
.terminal-body, .sample-card, .glass-panel { padding: clamp(20px, 4vw, 34px); }
.eyebrow { margin: 0 0 9px; color: var(--cyan); letter-spacing: .17em; text-transform: uppercase; font-size: .76rem; font-weight: 950; }
h1 { margin: 12px 0 16px; font-size: clamp(2.2rem, 5.5vw, 5rem); line-height: .95; letter-spacing: -.07em; max-width: 900px; }
h2 { margin: 0; font-size: clamp(1.36rem, 2.4vw, 2.18rem); letter-spacing: -.035em; }
h3 { margin: 0 0 12px; }
h4 { margin: 18px 0 10px; color: var(--cyan); }
.terminal-body p, .muted { color: var(--muted); line-height: 1.65; }
.hero-actions, .quick-fill, .actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.primary-link, .primary-btn, .outline-btn, .secondary-btn, .danger-btn, .neon-btn {
  border: 0;
  cursor: pointer;
  border-radius: 16px;
  padding: 12px 18px;
  font-weight: 950;
  transition: transform .16s ease, box-shadow .16s ease, opacity .16s ease;
}
.primary-link, .primary-btn {
  color: #070411;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 18px 42px rgba(84,242,210,.18);
}
.outline-btn, .neon-btn {
  color: var(--text);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--line-strong);
}
.secondary-btn { color: #06120d; background: linear-gradient(135deg, var(--success), var(--cyan)); }
.danger-btn { color: #fff; background: linear-gradient(135deg, var(--danger), var(--pink)); }
button:hover, .primary-link:hover { transform: translateY(-1px); }
button:disabled { cursor: not-allowed; opacity: .5; transform: none; }
.status-line { display: inline-block; margin-top: 14px; border: 1px solid var(--line); color: var(--muted); background: rgba(255,255,255,.05); padding: 10px 12px; border-radius: 999px; }
.status-line.ok { color: var(--success); border-color: rgba(101,242,169,.4); }
.status-line.fail { color: var(--danger); border-color: rgba(255,107,107,.4); }
.sample-card { align-self: stretch; }
.sample-list { display: grid; gap: 12px; margin-top: 18px; }
.sample-list span, .preview-row span { display: block; color: var(--muted); font-size: .82rem; margin-bottom: 6px; }
.sample-list code, .preview-row code {
  display: block;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(0,0,0,.22);
  padding: 12px;
  color: var(--text);
}
.input-panel, .result-grid, .analysis-panel { grid-column: 1 / -1; }
.section-title { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.compact-title { margin-bottom: 12px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin-top: 16px; }
.textarea-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; margin-top: 16px; }
.field { display: grid; gap: 8px; color: var(--text); font-weight: 900; }
select, textarea {
  width: 100%;
  outline: none;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(0,0,0,.22);
  border-radius: 17px;
  padding: 14px 16px;
}
textarea { resize: vertical; min-height: 118px; font-family: var(--mono); letter-spacing: .035em; line-height: 1.55; }
select:focus, textarea:focus { border-color: var(--line-strong); box-shadow: 0 0 0 4px rgba(84,242,210,.1); }
.input-counter { justify-self: end; color: var(--muted); font-size: .82rem; font-weight: 900; }
.input-counter.full { color: var(--success); }
.error-box { margin: 16px 0 0; border: 1px solid rgba(255,107,107,.38); background: rgba(255,107,107,.1); color: #ffd5d5; border-radius: 16px; padding: 14px 16px; }
.result-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: 22px; }
.result-value {
  margin: 14px 0 8px;
  border-radius: 22px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(135deg, rgba(84,242,210,.17), rgba(157,124,255,.20), rgba(255,95,162,.14));
  color: #fff;
  padding: 22px;
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  letter-spacing: .05em;
}
.verify-box { margin-top: 16px; border: 1px dashed var(--line); background: rgba(0,0,0,.18); color: var(--muted); border-radius: 17px; padding: 16px; line-height: 1.6; }
.verify-box.ok { color: var(--success); border-color: rgba(101,242,169,.4); }
.verify-box.fail { color: var(--danger); border-color: rgba(255,107,107,.4); }
.step-box { background: rgba(0,0,0,.2); border: 1px solid var(--line); border-radius: 20px; padding: 18px; margin-top: 16px; }
.glow-box { border-color: var(--line-strong); background: linear-gradient(180deg, rgba(84,242,210,.08), rgba(157,124,255,.08)); }
.step-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.step-head code { color: var(--cyan); font-weight: 900; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.mt { margin-top: 16px; }
.bit-grid { display: grid; grid-template-columns: repeat(16, minmax(30px, 1fr)); gap: 6px; margin-top: 12px; }
.bit-grid.compact { grid-template-columns: repeat(8, minmax(30px,1fr)); }
.bit, .mini-bit { position: relative; min-height: 34px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.07); color: var(--text); font: 900 .92rem var(--mono); }
.bit.group-end, .mini-bit.group-end { border-color: var(--line-strong); }
.bit::after { content: attr(data-index); position: absolute; top: 2px; right: 4px; font: 700 .52rem var(--sans); color: rgba(255,255,255,.34); }
.inline-bits { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 12px; }
.mini-bit { width: 24px; min-height: 24px; font-size: .72rem; border-radius: 7px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; margin-top: 18px; }
table { width: 100%; border-collapse: collapse; min-width: 980px; background: rgba(0,0,0,.14); }
th, td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--cyan); background: rgba(84,242,210,.08); font-size: .85rem; }
td { color: var(--text); font-family: var(--mono); font-size: .87rem; word-break: break-all; }
.pill { display: inline-block; padding: 5px 9px; border-radius: 999px; background: rgba(84,242,210,.1); border: 1px solid rgba(84,242,210,.28); color: var(--cyan); font-family: var(--sans); font-weight: 950; }
.rounds { display: grid; gap: 14px; margin-top: 18px; }
.round-card { border: 1px solid var(--line); border-radius: 20px; background: rgba(0,0,0,.18); overflow: hidden; }
.round-header { width: 100%; display: grid; grid-template-columns: 120px minmax(180px,.9fr) minmax(250px,1.25fr); gap: 14px; align-items: center; text-align: left; border-radius: 0; color: var(--text); background: rgba(255,255,255,.05); }
.round-header:hover { transform: none; background: rgba(84,242,210,.08); }
.round-no { color: var(--amber); font-weight: 950; }
.round-header em { color: var(--muted); font-style: normal; font-family: var(--mono); margin-left: 6px; }
.round-state { color: var(--muted); font-family: var(--mono); font-size: .84rem; }
.round-body { display: none; padding: 18px; }
.round-card.open .round-body { display: block; }
.formula-box { border: 1px solid rgba(84,242,210,.26); border-radius: 17px; padding: 14px; background: rgba(84,242,210,.07); color: var(--muted); margin-bottom: 16px; line-height: 1.6; }
.formula-box b { color: var(--cyan); }
.round-summary { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-bottom: 16px; }
.kv { border: 1px solid var(--line); border-radius: 15px; padding: 12px; background: rgba(255,255,255,.045); }
.kv span { color: var(--cyan); display: block; margin-bottom: 6px; font-size: .84rem; font-weight: 950; }
.sbox-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; margin-top: 12px; }
.sbox-card { border: 1px solid var(--line); border-radius: 16px; padding: 12px; background: rgba(255,255,255,.045); font-family: var(--mono); font-size: .83rem; line-height: 1.55; }
.sbox-title { color: var(--amber); font: 950 1rem var(--sans); margin-bottom: 8px; }
.sbox-row { display: flex; justify-content: space-between; gap: 10px; border-top: 1px solid rgba(255,255,255,.08); padding-top: 7px; margin-top: 7px; }
.sbox-row span { color: var(--muted); font-family: var(--sans); }
.sbox-row code { text-align: right; color: var(--text); }
.footer { width: min(1440px, calc(100% - 48px)); margin: -40px auto 32px; color: var(--muted); text-align: center; }
@media (max-width: 1040px) { .page-grid, .result-grid { grid-template-columns: 1fr; } .sample-card { grid-column: 1 / -1; } }
@media (max-width: 820px) { .topbar { flex-direction: column; align-items: flex-start; } .textarea-grid, .form-grid, .two-col, .preview-row, .round-summary, .sbox-grid { grid-template-columns: 1fr; } .round-header { grid-template-columns: 1fr; } .section-title { flex-direction: column; } .bit-grid { grid-template-columns: repeat(8, minmax(28px,1fr)); } }
@media (max-width: 560px) { .topbar, .page-grid, .footer { width: calc(100% - 28px); } .actions button, .quick-fill button, .hero-actions a, .hero-actions button { width: 100%; text-align: center; } .bit-grid, .bit-grid.compact { grid-template-columns: repeat(4, minmax(28px,1fr)); } }