:root {
  --bg: #07111f;
  --panel: rgba(8, 20, 36, 0.82);
  --line: rgba(180, 215, 255, 0.14);
  --text: #f4f7fb;
  --muted: #8fa5bf;
  --accent: #71e6c4;
  --accent-2: #ffb25b;
  --danger: #ff7b7b;
  --shadow: 0 24px 80px rgba(1, 8, 18, 0.48);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Semibold", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(113, 230, 196, 0.18), transparent 30%),
    radial-gradient(circle at 80% 10%, rgba(255, 178, 91, 0.18), transparent 24%),
    linear-gradient(180deg, #08111f 0%, #050a14 100%);
}

button,
input {
  font: inherit;
}

.hidden {
  display: none !important;
}

.app-shell {
  min-height: 100vh;
  padding: max(16px, env(safe-area-inset-top)) 18px max(20px, env(safe-area-inset-bottom));
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.8fr);
  gap: 24px;
  min-height: min(46rem, calc(100svh - 56px));
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(10, 22, 38, 0.94), rgba(7, 17, 31, 0.78)),
    linear-gradient(120deg, rgba(113, 230, 196, 0.08), rgba(255, 178, 91, 0.05));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
}

.eyebrow,
.section-kicker,
.panel-label {
  margin: 0 0 10px;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 12px;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(42px, 10vw, 84px);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.hero-text {
  max-width: 34rem;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.7;
}

.hero-actions,
.range-picker,
.view-switcher,
.ai-actions,
.ai-chat-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 24px;
}

.primary-button,
.ghost-button,
.tab,
.range-button {
  appearance: none;
  border: 0;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.primary-button,
.ghost-button {
  min-height: 44px;
  padding: 13px 20px;
  border-radius: 999px;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #9ff2d6);
  color: #042337;
  font-weight: 700;
}

.primary-button.small {
  padding: 10px 16px;
}

.ghost-button.small {
  padding: 10px 16px;
}

.ghost-button {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.primary-button:hover,
.ghost-button:hover,
.tab:hover,
.range-button:hover {
  transform: translateY(-1px);
}

.hero-meter {
  position: relative;
  min-height: 240px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(3px);
  animation: float 8s ease-in-out infinite;
}

.orb-a {
  width: 220px;
  height: 220px;
  top: 16px;
  right: 26px;
  background: radial-gradient(circle at 35% 35%, rgba(113, 230, 196, 0.95), rgba(113, 230, 196, 0.04));
}

.orb-b {
  width: 160px;
  height: 160px;
  top: 72px;
  right: 110px;
  animation-delay: -3s;
  background: radial-gradient(circle at 50% 50%, rgba(255, 178, 91, 0.92), rgba(255, 178, 91, 0.02));
}

.panel {
  position: relative;
  width: min(100%, 280px);
  margin-top: auto;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(3, 10, 19, 0.7);
  backdrop-filter: blur(18px);
}

.panel strong {
  display: block;
  font-size: 38px;
  margin-bottom: 8px;
}

.panel span:last-child {
  color: var(--muted);
}

.workspace {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.focus-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.focus-strip article,
.view,
.tab,
.range-button,
.chart-panel,
.history-table,
.alert-item,
.ai-card,
.ai-history,
.settings-form,
.data-stage,
.signal-list {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
}

.focus-strip article {
  padding: 18px;
}

.focus-strip span,
.signal-list span,
.settings-form label,
.ai-history span,
.ai-card span {
  color: var(--muted);
}

.focus-strip strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
}

.view-switcher {
  position: sticky;
  top: 10px;
  z-index: 20;
  padding: 6px;
  border: 1px solid var(--line);
  background: rgba(5, 12, 22, 0.78);
  backdrop-filter: blur(16px);
  overflow-x: auto;
  scrollbar-width: none;
}

.view-switcher::-webkit-scrollbar {
  display: none;
}

.tab,
.range-button {
  min-height: 42px;
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(10, 18, 30, 0.72);
  white-space: nowrap;
}

.tab.is-active,
.range-button.is-active {
  color: #041d30;
  background: linear-gradient(135deg, #f7f4eb, #d7ecff);
}

.view {
  display: none;
  padding: 22px;
}

.view.is-active {
  display: block;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(28px, 5vw, 42px);
  letter-spacing: -0.03em;
}

.section-note {
  margin: 0;
  max-width: 30rem;
  color: var(--muted);
  line-height: 1.6;
}

.overview-grid,
.ai-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.ai-layout {
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  grid-template-areas:
    "latest summary"
    "chat advice"
    "dialog advice";
  gap: 18px;
  align-items: start;
}

.data-stage,
.signal-list,
.ai-card,
.ai-history {
  min-height: 260px;
  padding: 24px;
}

.data-stage {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(180deg, rgba(113, 230, 196, 0.08), transparent),
    linear-gradient(160deg, rgba(255, 178, 91, 0.08), rgba(8, 18, 31, 0.9));
}

.data-stage strong {
  font-size: clamp(52px, 9vw, 96px);
  line-height: 0.92;
  margin: 12px 0;
}

.data-stage p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.alarm-reason {
  margin-top: 14px !important;
  font-size: 14px !important;
  line-height: 1.6;
}

.signal-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.signal-list div {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.signal-list strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
}

.history-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.history-chart-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.chart-panel {
  padding: 18px;
}

.chart-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.chart-title-row strong {
  font-size: 20px;
}

.chart-title-row span {
  color: var(--muted);
  font-size: 14px;
}

.chart-panel canvas {
  width: 100%;
  height: auto;
  display: block;
}

.history-table,
.alert-feed,
.ai-history {
  overflow: hidden;
}

.history-table {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 16px;
  max-height: min(72vh, 820px);
  overflow: auto;
}

.history-item,
.alert-item,
.ai-history-item {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.history-item strong,
.alert-item strong,
.ai-history-item strong {
  display: block;
  margin-bottom: 6px;
}

.history-item span,
.alert-item span,
.ai-history-item span,
.history-item p,
.alert-item p,
.form-status,
.summary-list,
.ai-card p {
  margin: 0;
  color: var(--muted);
}

.alert-feed,
#aiHistoryList {
  display: grid;
  gap: 12px;
}

.alert-item {
  position: relative;
  padding-left: 22px;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, opacity 180ms ease;
}

.alert-item:hover {
  transform: translateY(-1px);
}

.alert-item.unread {
  border-color: rgba(113, 230, 196, 0.34);
  background: rgba(113, 230, 196, 0.08);
}

.alert-item.read {
  opacity: 0.82;
}

.alert-item.is-pending {
  pointer-events: none;
  opacity: 0.6;
}

.alert-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent);
}

.alert-item.alarm::before {
  background: var(--danger);
}

.alert-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.alert-meta span {
  white-space: nowrap;
}

.ai-card.emphasis strong {
  margin-top: auto;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.ai-card.emphasis {
  grid-area: latest;
}

.ai-card-summary {
  grid-area: summary;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.summary-list {
  display: grid;
  gap: 12px;
  padding: 0;
  line-height: 1.7;
  list-style: none;
}

.ai-provider,
.ai-chat-status {
  margin: 0;
  color: var(--muted);
}

.ai-chat-card {
  grid-area: chat;
  display: grid;
  grid-template-rows: auto auto minmax(220px, 320px) auto minmax(110px, auto);
  gap: 14px;
  min-height: 0;
}

.ai-chat-label {
  color: var(--muted);
  font-size: 14px;
}

.ai-chat-toolbar {
  align-items: center;
  justify-content: space-between;
}

.ai-chat-toolbar .primary-button {
  flex: 0 0 auto;
  min-width: 112px;
  white-space: nowrap;
}

.ai-chat-toolbar .ai-chat-status {
  flex: 1 1 220px;
  min-width: 0;
}

.ai-chat-card textarea {
  width: 100%;
  padding: 14px;
  resize: vertical;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(4, 13, 22, 0.92);
  min-height: 220px;
  max-height: 360px;
}

.ai-chat-reply {
  min-height: 120px;
  padding: 14px 16px;
  color: var(--text);
  line-height: 1.7;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  white-space: pre-wrap;
  overflow: auto;
}

.ai-advice-history {
  grid-area: advice;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: 640px;
}

.ai-chat-log {
  grid-area: dialog;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: 300px;
}

.ai-history-scroll {
  display: grid;
  gap: 12px;
  min-height: 0;
  overflow: auto;
  padding-right: 4px;
}

#aiHistoryList {
  max-height: min(78vh, 1180px);
}

#aiChatHistoryList {
  max-height: min(38vh, 460px);
}

.history-table,
.ai-history-scroll {
  scrollbar-width: thin;
  scrollbar-color: rgba(143, 165, 191, 0.5) transparent;
}

.settings-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 20px;
}

.settings-form label {
  display: grid;
  gap: 10px;
}

.checkbox-field {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: rgba(4, 13, 22, 0.92);
}

.checkbox-field input {
  width: 22px;
  min-height: 22px;
  margin: 0;
}

.settings-form input,
.settings-form select {
  width: 100%;
  min-height: 46px;
  padding: 12px 14px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(4, 13, 22, 0.92);
}

.settings-form button {
  justify-self: start;
  margin-top: 10px;
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  grid-column: 1 / -1;
}

.config-meta {
  display: grid;
  gap: 8px;
}

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

.form-status.secondary {
  margin-top: 0;
}

@keyframes float {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(0, -12px, 0);
  }
}

@media (max-width: 960px) {
  .hero,
  .focus-strip,
  .overview-grid,
  .history-layout,
  .history-chart-grid,
  .settings-form {
    grid-template-columns: 1fr;
  }

  .ai-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "latest"
      "summary"
      "chat"
      "advice"
      "dialog";
  }

  .signal-list {
    grid-template-columns: 1fr 1fr;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .ai-advice-history,
  .ai-chat-log {
    min-height: 0;
  }

  #aiHistoryList,
  #aiChatHistoryList,
  .history-table {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: max(12px, env(safe-area-inset-top)) 12px max(14px, env(safe-area-inset-bottom));
  }

  .hero {
    min-height: auto;
    padding: 20px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .panel strong {
    font-size: 30px;
  }

  .signal-list,
  .settings-form,
  .focus-strip {
    grid-template-columns: 1fr 1fr;
  }

  .settings-actions {
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
  }

  .signal-list div,
  .focus-strip article {
    min-width: 0;
  }

  .focus-strip strong {
    font-size: 22px;
  }

  .ai-chat-card {
    grid-template-rows: auto auto minmax(180px, 240px) auto minmax(110px, auto);
  }

  .ai-chat-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 420px) {
  .signal-list,
  .settings-form,
  .focus-strip {
    grid-template-columns: 1fr;
  }

  .view {
    padding: 16px;
  }
}