:root {
  --ink: #07131a;
  --ink-2: #0d2029;
  --panel: rgba(14, 35, 43, .92);
  --line: rgba(177, 225, 219, .16);
  --frost: #e7f5f2;
  --muted: #91aaa8;
  --cyan: #30d5b5;
  --cyan-soft: #8cead6;
  --amber: #f2ad49;
  --danger: #ff7468;
  --radius: 18px;
  --shadow: 0 24px 80px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--frost);
  background:
    linear-gradient(90deg, transparent 49.8%, rgba(67, 183, 162, .06) 50%, transparent 50.2%),
    radial-gradient(circle at 50% 50%, transparent 0 12%, rgba(67, 183, 162, .05) 12.2% 12.6%, transparent 12.8%),
    linear-gradient(135deg, #061116, #0b2027 54%, #07151b);
  font: 16px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .24;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, #000, transparent 85%);
}

a { color: var(--cyan-soft); text-decoration: none; }
a:hover { color: white; }
button, input, select { font: inherit; }
button, .button {
  border: 0;
  border-radius: 999px;
  padding: .8rem 1.2rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform .18s ease, filter .18s ease;
}
button:hover, .button:hover { transform: translateY(-1px); filter: brightness(1.08); }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible {
  outline: 3px solid rgba(48, 213, 181, .4);
  outline-offset: 3px;
}

.app-shell { position: relative; min-height: 100vh; }
.brand-rail {
  position: fixed;
  z-index: 20;
  inset: 0 auto 0 0;
  width: 86px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 12px;
  border-right: 1px solid var(--line);
  background: rgba(3, 13, 18, .75);
  backdrop-filter: blur(18px);
}
.brand-mark {
  width: 52px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid rgba(48, 213, 181, .45);
  border-radius: 16px 4px 16px 4px;
  color: var(--cyan);
  font: 900 1rem/1 "Arial Narrow", Impact, sans-serif;
  letter-spacing: -.06em;
  transform: rotate(-3deg);
  box-shadow: inset 0 0 20px rgba(48, 213, 181, .09);
}
.rail-word {
  margin-top: auto;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  color: #6f8988;
  font: 700 .65rem/1 ui-monospace, monospace;
  letter-spacing: .24em;
  text-transform: uppercase;
}
.topbar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  padding: 14px 36px 14px 122px;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 18, 24, .55);
  backdrop-filter: blur(12px);
}
.topbar nav { display: flex; align-items: center; gap: 18px; }
.topbar a { color: var(--muted); font-size: .88rem; font-weight: 700; }
.topbar .user-chip { color: var(--frost); padding: .45rem .8rem; border: 1px solid var(--line); border-radius: 999px; }
.inline-form { display: inline; }
.inline-form button { padding: .45rem .8rem; color: var(--muted); background: transparent; border: 1px solid var(--line); }
.page { width: min(1180px, calc(100% - 136px)); margin: 0 36px 0 auto; padding: 54px 0 90px; }
.page > header { margin-bottom: 34px; }
header > p:first-child, .eyebrow {
  margin: 0 0 .5rem;
  color: var(--cyan);
  font: 800 .72rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1, h2 { font-family: "Arial Narrow", "Roboto Condensed", Impact, sans-serif; }
h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 6.4rem);
  line-height: .91;
  letter-spacing: -.055em;
  text-transform: uppercase;
}
h1 em { color: var(--cyan); font-style: normal; }
h2 { margin: 0 0 1.2rem; font-size: 1.3rem; letter-spacing: .01em; text-transform: uppercase; }
p { color: var(--muted); }

.flash { margin-bottom: 18px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.flash.success { border-color: rgba(48, 213, 181, .45); color: var(--cyan-soft); }
.flash.error { border-color: rgba(255, 116, 104, .5); color: #ffc1bb; }

.calculator-form { display: grid; gap: 22px; }
section, .auth-card, .admin-analysis, .history-card {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(19, 46, 55, .92), rgba(9, 27, 34, .94));
  box-shadow: var(--shadow);
}
section { padding: clamp(20px, 4vw, 36px); border-radius: var(--radius); }
.calculator-form section { position: relative; overflow: hidden; }
.calculator-form section::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 72px; height: 4px;
  background: var(--cyan);
}
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
label { display: grid; gap: 7px; color: var(--muted); font-size: .8rem; font-weight: 700; }
input, select {
  width: 100%;
  min-height: 46px;
  padding: .72rem .85rem;
  color: var(--frost);
  background: rgba(2, 13, 18, .7);
  border: 1px solid rgba(159, 207, 201, .18);
  border-radius: 10px;
  font-variant-numeric: tabular-nums;
}
input:hover, select:hover { border-color: rgba(48, 213, 181, .45); }
.team-head, .metric-row { display: grid; grid-template-columns: minmax(150px, 1.4fr) repeat(2, 1fr); gap: 14px; align-items: end; }
.team-head { margin-bottom: 10px; color: var(--cyan-soft); font: 800 .7rem/1 ui-monospace, monospace; text-transform: uppercase; }
.metric-row { padding: 10px 0; border-top: 1px solid rgba(177, 225, 219, .08); }
.metric-row > span { align-self: center; color: #c4d8d5; font-size: .9rem; font-weight: 700; }
.metric-row label span { position: absolute; width: 1px; height: 1px; overflow: hidden; }
.primary { justify-self: stretch; min-height: 58px; color: #062119; background: linear-gradient(90deg, var(--cyan), #9aecd9); text-transform: uppercase; letter-spacing: .08em; }

.verdict-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 22px; }
.verdict {
  position: relative;
  min-height: 270px;
  display: grid;
  place-content: center;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 28px 8px 28px 8px;
  overflow: hidden;
  background: rgba(8, 28, 35, .92);
}
.verdict::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px dashed rgba(177, 225, 219, .13);
  border-radius: 50%;
}
.verdict small { z-index: 1; max-width: 220px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.verdict strong { z-index: 1; font: 900 clamp(4rem, 10vw, 7rem)/.9 "Arial Narrow", Impact, sans-serif; }
.verdict b { z-index: 1; margin-top: 12px; font: 700 1rem/1 ui-monospace, monospace; }
.verdict.yes strong, .verdict.yes b { color: var(--cyan); }
.verdict.no strong, .verdict.no b { color: var(--danger); }
dl { display: grid; grid-template-columns: 1fr auto; gap: 12px 20px; margin: 0; }
dt { padding-bottom: 10px; color: var(--muted); border-bottom: 1px solid var(--line); }
dd { margin: 0; padding-bottom: 10px; border-bottom: 1px solid var(--line); font-family: ui-monospace, monospace; font-weight: 800; }
.model-notice { margin: 18px 0; padding: 18px; border-left: 4px solid var(--amber); background: rgba(242, 173, 73, .08); }
.model-notice strong { color: var(--amber); }

.auth-wrap { min-height: calc(100vh - 190px); display: grid; place-items: center; }
.auth-card { width: min(480px, 100%); padding: 36px; border-radius: 28px 8px 28px 8px; }
.auth-card h1 { font-size: clamp(2.6rem, 10vw, 4.8rem); }
.auth-card form { display: grid; gap: 15px; margin: 28px 0 18px; }
.auth-card input[type=submit] { cursor: pointer; color: #062119; background: var(--cyan); font-weight: 900; border: 0; }

.history-card { display: grid; grid-template-columns: 1fr auto auto; gap: 20px; align-items: center; margin-bottom: 10px; padding: 18px 22px; border-radius: 12px; color: var(--frost); }
.history-card span { color: var(--muted); font-size: .82rem; }
.history-card b { color: var(--cyan); font-family: ui-monospace, monospace; }
.admin-analysis { margin: 16px 0; padding: 20px; border-radius: 14px; }
.admin-analysis > div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.admin-analysis form { display: grid; grid-template-columns: repeat(4, 1fr) auto; gap: 10px; align-items: end; }
.admin-analysis button { color: var(--ink); background: var(--amber); }

@media (max-width: 820px) {
  .brand-rail { position: absolute; width: 68px; height: 72px; padding: 10px; border: 0; background: transparent; }
  .brand-mark { width: 46px; }
  .rail-word { display: none; }
  .topbar { padding: 12px 16px 12px 78px; }
  .topbar .user-chip { display: none; }
  .page { width: calc(100% - 28px); margin: 0 14px; padding: 38px 0 70px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .verdict-grid { grid-template-columns: 1fr; }
  .admin-analysis form { grid-template-columns: 1fr 1fr; }
  .history-card { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 500px) {
  h1 { font-size: 2.75rem; }
  section { padding: 18px 14px; }
  .grid { grid-template-columns: 1fr; }
  .team-head, .metric-row { grid-template-columns: minmax(105px, 1.05fr) repeat(2, .8fr); gap: 7px; }
  input { padding: .6rem; }
  .admin-analysis form { grid-template-columns: 1fr; }
  .topbar nav > a { display: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }