* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(29, 78, 216, 0.08), transparent 28%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  color: #0f172a;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 460px);
  padding: 32px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.12);
}

.login-title {
  margin: 8px 0 0;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.05;
}

.login-copy {
  margin: 12px 0 0;
  color: #475569;
  line-height: 1.6;
}

.login-form {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.login-label {
  font-size: 14px;
  font-weight: 700;
}

.login-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: #fff;
  font: inherit;
}

.login-input:focus {
  outline: 2px solid rgba(15, 118, 110, 0.2);
  border-color: #0f766e;
}

.login-button,
.logout-button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.login-button {
  margin-top: 8px;
  background: linear-gradient(135deg, #0f172a 0%, #0f766e 100%);
  color: #f8fafc;
}

.login-error {
  margin: 4px 0 0;
  color: #b91c1c;
  font-size: 14px;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px;
  border-radius: 28px;
  background: linear-gradient(135deg, #0f172a 0%, #12314c 55%, #0f766e 100%);
  color: #f8fafc;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.16);
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  color: #99f6e4;
}

.hero h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.05;
}

.subtitle,
.muted,
.meta-file {
  color: rgba(248, 250, 252, 0.78);
}

.subtitle {
  max-width: 620px;
  margin: 12px 0 0;
  line-height: 1.6;
}

.hero-meta {
  min-width: 230px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.meta-label {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #99f6e4;
}

.meta-value {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 700;
}

.meta-link {
  color: #99f6e4;
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  margin-top: 12px;
  text-decoration: none;
}

.meta-link:hover {
  text-decoration: underline;
}

.meta-file {
  margin: 10px 0 0;
  font-size: 12px;
  word-break: break-word;
}

.logout-form {
  margin-top: 14px;
}

.logout-button {
  background: rgba(248, 250, 252, 0.16);
  color: #f8fafc;
  border: 1px solid rgba(248, 250, 252, 0.16);
}

.card-grid,
.mini-grid,
.grid {
  display: grid;
  gap: 16px;
}

.card-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 18px;
}

.mini-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.metric-card,
.panel,
.mini-card,
.stack-item {
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.08);
}

.metric-card {
  padding: 20px;
}

.metric-value {
  margin: 0;
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
}

.metric-label {
  margin: 10px 0 0;
  font-size: 14px;
  font-weight: 700;
}

.metric-hint,
.item-detail {
  margin: 6px 0 0;
  color: #475569;
  font-size: 13px;
  line-height: 1.5;
}

.panel {
  padding: 22px;
}

.panel h2,
.panel h3 {
  margin: 0;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.muted {
  margin: 8px 0 0;
  color: #475569;
  font-size: 14px;
}

.stack,
.ordered,
.traffic-list {
  margin-top: 16px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stack-item {
  padding: 16px 18px;
}

.item-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: #0f172a;
}

.ordered {
  padding-left: 22px;
  display: grid;
  gap: 12px;
}

.ordered li {
  line-height: 1.6;
  color: #0f172a;
}

.mini-card {
  padding: 16px;
}

.mini-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748b;
}

.mini-value {
  margin: 8px 0 0;
  font-size: 28px;
  font-weight: 800;
}

.traffic-list {
  display: grid;
  gap: 16px;
}

.hidden {
  display: none;
}

.error-panel {
  margin-top: 18px;
  border-color: rgba(239, 68, 68, 0.2);
  background: rgba(254, 242, 242, 0.95);
  color: #7f1d1d;
}

@media (max-width: 960px) {
  .card-grid,
  .mini-grid,
  .grid.two {
    grid-template-columns: 1fr 1fr;
  }

  .hero {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .shell {
    padding: 18px 14px 32px;
  }

  .hero,
  .panel,
  .metric-card,
  .mini-card,
  .stack-item {
    border-radius: 20px;
  }

  .card-grid,
  .mini-grid,
  .grid.two {
    grid-template-columns: 1fr;
  }
}