:root {
  --ink: #241c17;
  --muted: #73665d;
  --paper: #fffdf9;
  --surface: #ffffff;
  --line: #eadfd6;
  --coffee: #6f3d24;
  --coffee-dark: #4c2818;
  --cream: #f4eadf;
  --accent: #d78a46;
  --shadow: 0 18px 60px rgba(72, 40, 23, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 10%, rgba(215, 138, 70, 0.16), transparent 24rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  min-height: 68px;
  padding: 0 5vw;
  border-bottom: 1px solid rgba(111, 61, 36, 0.12);
  background: rgba(255, 253, 249, 0.88);
  backdrop-filter: blur(12px);
}

.brand { color: var(--coffee-dark); font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
.brand span { color: var(--muted); font-weight: 600; margin-left: 0.45rem; }
.page-shell { width: min(1180px, 90vw); margin: 0 auto; padding: 7vh 0 10vh; }

.login-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
  min-height: calc(100vh - 190px);
}

.eyebrow { color: var(--coffee); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
h1 { max-width: 780px; margin: 0.5rem 0 1rem; font-size: clamp(2.25rem, 5vw, 4.8rem); line-height: 0.98; letter-spacing: -0.055em; }
.lead { max-width: 680px; color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.28rem); line-height: 1.6; }
.steps { margin: 2rem 0; padding-left: 1.4rem; color: var(--muted); line-height: 1.9; }

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 1.4rem;
  border-radius: 14px;
  background: var(--coffee);
  color: white;
  font-weight: 750;
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(111, 61, 36, 0.22);
}
.primary-button:hover { background: var(--coffee-dark); }
.status-line { min-height: 1.5rem; margin-top: 1rem; color: var(--coffee); font-weight: 650; }

.login-card, .identity-card, .metric-card, .empty-state {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}
.login-card { padding: clamp(1.4rem, 3vw, 2.2rem); text-align: center; }
.qr { width: min(100%, 290px); aspect-ratio: 1; }
.code-label { margin: 1.2rem 0 0.25rem; color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em; }
.verification-code { margin: 0; color: var(--coffee-dark); font-size: 2.2rem; font-weight: 850; letter-spacing: 0.16em; }
.muted { color: var(--muted); font-size: 0.9rem; line-height: 1.5; }

.dashboard-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; }
.identity-card { display: grid; gap: 0.35rem; min-width: 260px; padding: 1.25rem; }
.identity-card span, .identity-card small { color: var(--muted); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 3rem; }
.metric-card { display: grid; gap: 1rem; min-height: 150px; padding: 1.4rem; box-shadow: none; }
.metric-card span { color: var(--muted); }
.metric-card strong { font-size: 2.6rem; }
.empty-state { margin-top: 1rem; padding: 2rem; box-shadow: none; }
.empty-state h2 { margin-top: 0; }
.empty-state p { color: var(--muted); }

@media (max-width: 820px) {
  .page-shell { width: min(92vw, 640px); padding-top: 4vh; }
  .login-layout { grid-template-columns: 1fr; min-height: auto; gap: 2rem; }
  .login-card { order: -1; }
  .qr { width: min(64vw, 250px); }
  .dashboard-head { align-items: stretch; flex-direction: column; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .brand span { display: block; margin: 0; font-size: 0.78rem; }
  .primary-button { display: flex; width: 100%; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-card { min-height: 110px; }
}