:root {
  --canvas: #07100f;
  --canvas-deep: #050b0a;
  --surface: #0b1714;
  --surface-raised: #0f1d1a;
  --line: #1b322c;
  --line-strong: #2a4941;
  --text: #edf5f2;
  --muted: #91a9a1;
  --dim: #667f77;
  --mint: #70e1b1;
  --mint-quiet: #397e62;
  --red: #f18478;
  --page: 1180px;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: linear-gradient(180deg, var(--canvas) 0, var(--canvas-deep) 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-variant-numeric: tabular-nums;
}

.site-header, .site-footer, .login-layout { width: min(var(--page), calc(100% - 48px)); margin-inline: auto; }
.site-header { min-height: 76px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { width: fit-content; display: inline-flex; align-items: center; gap: 11px; color: inherit; text-decoration: none; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid rgba(112, 225, 177, 0.65); border-radius: 8px; background: rgba(112, 225, 177, 0.08); color: var(--mint); }
.brand-mark svg { width: 25px; height: 25px; fill: currentColor; }
.brand-copy strong, .brand-copy small { display: block; }
.brand-copy strong { font-size: 13px; letter-spacing: 0.01em; }
.brand-copy small { margin-top: 1px; color: var(--dim); font-size: 10px; letter-spacing: 0.04em; }
.site-classification { display: inline-flex; align-items: center; gap: 8px; color: var(--dim); font-size: 9px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.site-classification span { width: 6px; height: 6px; border-radius: 50%; background: var(--mint); }

.login-layout { padding: clamp(54px, 9vh, 110px) 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, 430px); gap: clamp(70px, 12vw, 170px); align-items: center; }
.login-intro { align-self: stretch; display: flex; flex-direction: column; justify-content: space-between; gap: 70px; padding: 12px 0; }
.eyebrow { margin: 0 0 11px; color: var(--mint); font-size: 9px; font-weight: 850; letter-spacing: 0.16em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { max-width: 700px; margin-bottom: 20px; font-size: clamp(42px, 5.8vw, 72px); line-height: 1.02; letter-spacing: -0.055em; font-weight: 660; }
.intro-copy { max-width: 650px; margin-bottom: 0; color: var(--muted); font-size: clamp(15px, 1.5vw, 18px); line-height: 1.6; }
.desk-properties { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.desk-properties div { padding: 14px 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(11, 23, 20, 0.45); }
dt { color: var(--dim); font-size: 9px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
dd { margin: 5px 0 0; font-size: 11px; font-weight: 700; }

.login-panel { padding: 32px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface-raised); box-shadow: 0 22px 55px rgba(0, 0, 0, 0.25); }
.panel-heading { margin-bottom: 27px; }
h2 { margin-bottom: 7px; font-size: 28px; line-height: 1.1; letter-spacing: -0.035em; font-weight: 670; }
.panel-heading > p:last-child { margin-bottom: 0; color: var(--muted); font-size: 12px; }
label { display: block; margin: 17px 0 7px; color: var(--dim); font-size: 9px; font-weight: 850; letter-spacing: 0.1em; text-transform: uppercase; }
input { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: 6px; outline: none; background: var(--canvas-deep); color: var(--text); font: 14px "SFMono-Regular", Consolas, "Liberation Mono", monospace; transition: border-color 140ms ease, box-shadow 140ms ease; }
input:hover { border-color: #3a5b52; }
input:focus { border-color: var(--mint); box-shadow: 0 0 0 3px rgba(112, 225, 177, 0.08); }
button { width: 100%; min-height: 49px; margin-top: 23px; border: 1px solid var(--mint); border-radius: 6px; background: var(--mint); color: #062019; font: inherit; font-weight: 800; cursor: pointer; transition: background 140ms ease, transform 140ms ease; }
button:hover, button:focus-visible { background: #86e9be; transform: translateY(-1px); outline: none; }
button:disabled { cursor: wait; opacity: 0.65; transform: none; }
.form-status { min-height: 20px; margin: 11px 0 0; color: var(--red); font-size: 11px; font-weight: 700; text-align: center; }
.session-note { margin-top: 21px; padding-top: 18px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 20px 1fr; gap: 9px; align-items: start; color: var(--muted); }
.session-note > span { width: 18px; height: 18px; display: grid; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--mint); font: 700 9px Georgia, serif; }
.session-note p { margin: 0; font-size: 10px; line-height: 1.55; }
.site-footer { min-height: 58px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--dim); font-size: 9px; letter-spacing: 0.04em; text-transform: uppercase; }

@media (max-width: 880px) {
  .login-layout { width: min(620px, calc(100% - 36px)); grid-template-columns: 1fr; gap: 42px; padding: 48px 0; }
  .login-intro { gap: 40px; padding: 0; }
  h1 { font-size: clamp(40px, 10vw, 62px); }
}

@media (max-width: 520px) {
  .site-header, .site-footer { width: calc(100% - 32px); }
  .site-classification, .brand-copy small { display: none; }
  .login-layout { width: calc(100% - 24px); padding: 36px 0; }
  .desk-properties { grid-template-columns: 1fr; }
  .desk-properties div { display: grid; grid-template-columns: 110px 1fr; align-items: center; }
  dd { margin: 0; text-align: right; }
  .login-panel { padding: 26px 20px; }
  .site-footer { flex-direction: column; align-items: flex-start; justify-content: center; padding: 14px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}