:root {
  --bg: #07111c;
  --surface: rgba(12, 23, 37, 0.92);
  --surface-soft: rgba(16, 31, 48, 0.86);
  --line: rgba(111, 198, 255, 0.14);
  --text: #eef7ff;
  --muted: #97abc2;
  --accent: #7de3ff;
  --accent-strong: #45b8ff;
  --success: #55dfad;
  --warning: #ffca6c;
  --danger: #ff8b8b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(69, 184, 255, 0.18), transparent 26%),
    radial-gradient(circle at bottom right, rgba(125, 227, 255, 0.12), transparent 26%),
    linear-gradient(180deg, #06111b, var(--bg));
}

.mobile-shell,
.login-shell {
  width: min(100%, 780px);
  margin: 0 auto;
  padding: 18px 16px 28px;
}

.mobile-topbar,
.focus-strip,
.section-block,
.login-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.26);
}

.mobile-topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  animation: slide-up 400ms ease-out;
}

.mini-kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.mobile-topbar h1,
.section-head h2,
.login-panel h1 {
  margin: 8px 0 0;
  line-height: 1.05;
}

.mobile-topbar h1,
.login-panel h1 {
  font-size: clamp(28px, 8vw, 40px);
}

.topbar-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.text-link,
.text-button {
  border: 0;
  background: transparent;
  color: var(--accent);
  text-decoration: none;
  font: inherit;
  padding: 0;
  cursor: pointer;
}

.focus-strip {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 14px;
  margin-top: 14px;
  padding: 18px;
  animation: slide-up 520ms ease-out;
}

.date-card,
.status-card,
.metric-card,
.alert-card,
.detail-link,
.history-row,
.detail-summary,
.detail-item,
.login-form label {
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.date-card,
.status-card {
  border-radius: 18px;
  padding: 14px;
}

label {
  display: grid;
  gap: 8px;
}

label span,
.freshness,
.login-copy,
.login-hint,
.detail-subtext,
.history-note {
  color: var(--muted);
}

input {
  width: 100%;
  min-height: 44px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(125, 227, 255, 0.12);
  background: rgba(4, 10, 18, 0.7);
  color: var(--text);
}

.date-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

button {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(125, 227, 255, 0.14);
  background: rgba(6, 17, 28, 0.86);
  color: var(--text);
  cursor: pointer;
}

.metrics-section,
.section-block {
  margin-top: 14px;
}

.section-block {
  padding: 18px;
  animation: slide-up 620ms ease-out;
}

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

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  padding: 16px;
  border-radius: 22px;
}

.metric-card.large {
  grid-column: span 2;
  background:
    linear-gradient(135deg, rgba(69, 184, 255, 0.18), rgba(12, 23, 37, 0.86)),
    var(--surface-soft);
}

.metric-card strong {
  display: block;
  margin-top: 12px;
  font-size: clamp(28px, 6vw, 42px);
  line-height: 1;
}

.metric-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.alert-stream,
.detail-links,
.detail-list {
  display: grid;
  gap: 12px;
}

.alert-card,
.detail-link,
.detail-item,
.detail-summary {
  border-radius: 18px;
  padding: 15px;
}

.alert-card.warning { border-color: rgba(255, 202, 108, 0.26); }
.alert-card.info { border-color: rgba(125, 227, 255, 0.24); }
.alert-card.neutral { border-color: var(--line); }

.alert-card strong,
.detail-link strong,
.detail-item strong,
.history-row strong {
  display: block;
}

.alert-card p,
.detail-link p,
.detail-item p,
.history-row p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.detail-link {
  text-decoration: none;
  color: inherit;
  transition: transform 180ms ease, border-color 180ms ease;
}

.detail-link:hover {
  transform: translateY(-1px);
  border-color: rgba(125, 227, 255, 0.28);
}

.history-bars {
  display: grid;
  gap: 12px;
}

.history-row {
  display: grid;
  gap: 10px;
  border-radius: 18px;
  padding: 15px;
}

.history-bar {
  position: relative;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.history-bar span {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
}

.detail-summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.hidden {
  display: none;
}

.login-body {
  display: grid;
  place-items: center;
}

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

.login-panel {
  width: min(100%, 440px);
  padding: 28px;
}

.login-form {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.login-form label {
  border-radius: 18px;
  padding: 14px;
}

.login-button {
  min-height: 48px;
  border: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #06111b;
  font-weight: 700;
}

.login-hint {
  margin-top: 12px;
  font-size: 13px;
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  .mobile-shell,
  .login-shell {
    padding: 12px 12px 24px;
  }

  .mobile-topbar,
  .focus-strip,
  .section-head,
  .detail-summary {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .focus-strip,
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .metric-card.large {
    grid-column: span 1;
  }

  .topbar-actions,
  .date-actions {
    width: 100%;
  }

  .topbar-actions {
    justify-content: space-between;
  }

  .date-actions button {
    flex: 1;
  }
}