:root {
  color-scheme: dark;
  --ink: #f2f1e8;
  --ink-soft: #aeb5a6;
  --ink-faint: #788174;
  --ground: #0d120e;
  --surface: #121914;
  --surface-raised: #182119;
  --surface-soft: #1c281d;
  --line: #2d392d;
  --line-strong: #445343;
  --leaf: #8bd46c;
  --leaf-dark: #224426;
  --water: #67aef6;
  --heat: #f29a72;
  --danger: #ff8178;
  --warning: #efc66e;
  --radius-large: 28px;
  --radius-medium: 18px;
  --radius-small: 12px;
  --content-width: 1120px;
  font-family: ui-rounded, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--ground);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% -10%, rgba(67, 111, 61, 0.26), transparent 34rem),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--ground);
  background-size: auto, 64px 64px, auto;
}

button,
input,
select {
  font: inherit;
}

button,
select,
input[type="text"],
input[type="password"] {
  min-height: 44px;
}

button {
  color: inherit;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(139, 212, 108, 0.4);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.shell {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 4px 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark,
.login-seal {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: var(--ground);
  background: var(--leaf);
  border-radius: 48% 52% 58% 42% / 45% 42% 58% 55%;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 26px;
  font-weight: 900;
  transform: rotate(-4deg);
}

.brand strong {
  display: block;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 25px;
  letter-spacing: 0.12em;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--ink-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: rgba(18, 25, 20, 0.76);
  font-size: 13px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-faint);
}

.status-online .status-dot {
  background: var(--leaf);
  box-shadow: 0 0 0 5px rgba(139, 212, 108, 0.11);
}

.status-online {
  color: var(--leaf);
  border-color: rgba(139, 212, 108, 0.28);
}

.status-error .status-dot {
  background: var(--danger);
}

.icon-button,
.secondary-button,
.primary-button {
  border: 0;
  border-radius: var(--radius-small);
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background-color 140ms ease;
}

.icon-button:active,
.secondary-button:active,
.primary-button:active {
  transform: translateY(1px);
}

.icon-button {
  padding: 0 14px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  background: transparent;
}

.icon-button:hover,
.secondary-button:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--surface-raised);
}

.tab-bar {
  position: sticky;
  top: 12px;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(520px, 100%);
  margin: 22px auto 30px;
  padding: 5px;
  border: 1px solid rgba(68, 83, 67, 0.7);
  border-radius: 999px;
  background: rgba(13, 18, 14, 0.88);
  box-shadow: 0 14px 42px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(16px);
}

.tab-button {
  border: 0;
  border-radius: 999px;
  color: var(--ink-faint);
  background: transparent;
  cursor: pointer;
}

.tab-button.is-active {
  color: #102012;
  background: var(--leaf);
  font-weight: 800;
}

.page-message {
  min-height: 24px;
  margin: -12px 0 14px;
  color: var(--warning);
  text-align: center;
  font-size: 13px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 0.72fr;
  gap: 14px;
}

.metric-card,
.control-section {
  border: 1px solid var(--line);
  background: rgba(18, 25, 20, 0.9);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.025);
}

.metric-card {
  min-height: 172px;
  padding: 24px;
  border-radius: var(--radius-medium);
}

.metric-soil {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 35%, rgba(139, 212, 108, 0.18), transparent 58%),
    var(--surface);
}

.eyebrow {
  display: block;
  color: var(--ink-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.17em;
}

.metric-card h1,
.section-heading h2,
.login-card h2 {
  margin: 9px 0 4px;
  font-family: "STSong", "Songti SC", serif;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.metric-card h1 {
  font-size: clamp(24px, 4vw, 36px);
}

.metric-card p,
.section-heading p,
.schedule-card small,
.range-card small,
.switch-card small,
.login-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

.metric-value {
  color: var(--leaf);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: clamp(56px, 8vw, 88px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.09em;
}

.dual-metric {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.dual-metric small {
  display: block;
  margin-bottom: 5px;
  color: var(--ink-soft);
}

.dual-metric strong,
.device-clock-card > strong {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: clamp(24px, 3vw, 34px);
}

.dual-metric div:first-child strong {
  color: var(--heat);
}

.dual-metric div:last-child strong {
  color: var(--water);
}

.device-clock-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.device-clock-card > strong {
  color: var(--ink);
}

.control-section {
  margin-top: 16px;
  padding: clamp(22px, 4vw, 40px);
  border-radius: var(--radius-large);
}

.section-heading,
.schedule-heading,
.range-header,
.automation-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.section-heading h2 {
  font-size: clamp(26px, 4vw, 38px);
}

.section-heading > p {
  max-width: 410px;
  text-align: right;
}

.switch-grid,
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.switch-card,
.range-card,
.schedule-card,
.automation-state-grid > div {
  border: 1px solid var(--line);
  background: var(--ground);
}

.switch-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 104px;
  padding: 20px;
  border-radius: var(--radius-medium);
  cursor: pointer;
}

.switch-card strong,
.range-card strong,
.schedule-card strong {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
}

.switch-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.switch-track {
  position: relative;
  flex: 0 0 auto;
  width: 62px;
  height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #202921;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.switch-track span {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--ink-soft);
  transition: transform 160ms ease, background-color 160ms ease;
}

.switch-input:checked + .switch-track {
  border-color: var(--leaf);
  background: var(--leaf-dark);
}

.switch-input:checked + .switch-track span {
  background: var(--leaf);
  transform: translateX(26px);
}

.switch-input:focus-visible + .switch-track {
  outline: 3px solid rgba(139, 212, 108, 0.4);
  outline-offset: 3px;
}

.range-card {
  padding: 22px;
  border-radius: var(--radius-medium);
}

.servo-card {
  margin-top: 14px;
}

.range-header output {
  color: var(--water);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 27px;
  font-weight: 900;
}

input[type="range"] {
  width: 100%;
  height: 26px;
  margin: 24px 0 4px;
  accent-color: var(--leaf);
  cursor: pointer;
}

.servo-card input[type="range"] {
  accent-color: var(--water);
}

.range-scale {
  display: flex;
  justify-content: space-between;
  color: var(--ink-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
}

.compact-switch {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  cursor: pointer;
}

.compact-switch > span:last-child {
  min-width: 54px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 800;
}

.automation-state-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 10px;
  margin-top: 28px;
}

.automation-state-grid > div {
  min-height: 86px;
  padding: 16px;
  border-radius: var(--radius-small);
}

.automation-state-grid span {
  display: block;
  margin-bottom: 9px;
  color: var(--ink-faint);
  font-size: 12px;
}

.automation-state-grid strong {
  font-size: 16px;
}

.settings-grid .range-card {
  min-height: 168px;
}

.schedule-card {
  margin-top: 14px;
  padding: 22px;
  border-radius: var(--radius-medium);
}

.primary-button,
.secondary-button {
  min-height: 46px;
  padding: 0 18px;
  font-weight: 800;
}

.primary-button {
  color: #102012;
  background: var(--leaf);
}

.primary-button:hover {
  background: #a0e782;
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.secondary-button {
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  background: transparent;
}

.period-list {
  display: grid;
  gap: 9px;
  margin: 20px 0;
}

.period-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr 46px;
  align-items: center;
  gap: 10px;
}

.period-row input,
.select-label select,
.login-card input {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-small);
  color: var(--ink);
  background: var(--surface-raised);
}

.period-row input {
  padding: 0 13px;
}

.period-row > span {
  color: var(--ink-faint);
  font-size: 13px;
}

.period-remove {
  width: 46px;
  min-height: 44px;
  border: 1px solid rgba(255, 129, 120, 0.3);
  border-radius: var(--radius-small);
  color: var(--danger);
  background: transparent;
  cursor: pointer;
}

.schedule-card > .primary-button {
  display: block;
  margin-left: auto;
}

.select-label {
  min-width: 180px;
}

.select-label span {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-faint);
  font-size: 12px;
}

.select-label select {
  padding: 0 12px;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 25px 0 14px;
  color: var(--ink-soft);
  font-size: 12px;
}

.chart-legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.chart-legend i {
  width: 18px;
  height: 3px;
  border-radius: 3px;
}

.legend-soil { background: var(--leaf); }
.legend-air { background: var(--water); }
.legend-temp { background: var(--heat); }

.chart-frame {
  position: relative;
  min-height: 420px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: var(--ground);
}

#history-canvas {
  display: block;
  width: 100%;
  height: 390px;
}

#history-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: var(--ink-faint);
}

.command-log {
  display: grid;
  gap: 8px;
  margin-top: 24px;
}

.command-row {
  display: grid;
  grid-template-columns: minmax(160px, 1.3fr) 1fr 1fr;
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--ground);
}

.command-row strong,
.command-row small,
.command-row time {
  display: block;
}

.command-row small,
.command-row time {
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 11px;
}

.command-state {
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--surface-raised);
  font-size: 12px;
}

.command-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.command-cancel {
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid rgba(255, 129, 120, 0.3);
  border-radius: 9px;
  color: var(--danger);
  background: transparent;
  cursor: pointer;
}

.command-state[data-state="acked"] { color: var(--leaf); }
.command-state[data-state="failed"],
.command-state[data-state="expired"] { color: var(--danger); }
.command-state[data-state="pending"],
.command-state[data-state="delivered"] { color: var(--warning); }

.empty-state {
  padding: 48px 12px;
  color: var(--ink-faint);
  text-align: center;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 6px 0;
  color: var(--ink-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.login-page {
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-shell {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  width: min(100%, 960px);
  min-height: 600px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--surface);
  box-shadow: 0 36px 100px rgba(0, 0, 0, 0.36);
}

.login-intro,
.login-card {
  padding: clamp(32px, 6vw, 70px);
}

.login-intro {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    radial-gradient(circle at 20% 10%, rgba(139, 212, 108, 0.22), transparent 45%),
    var(--surface-soft);
}

.login-seal {
  width: 72px;
  height: 72px;
  margin-bottom: auto;
  font-size: 38px;
}

.login-intro h1 {
  margin: 16px 0;
  font-family: "STSong", "Songti SC", serif;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.login-intro > p:last-child {
  max-width: 460px;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.login-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--ground);
}

.login-card h2 {
  font-size: 34px;
}

.login-card form {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.login-card label > span {
  display: block;
  margin-bottom: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.login-card input {
  padding: 0 14px;
}

.login-card .primary-button {
  margin-top: 8px;
}

.form-message {
  min-height: 24px;
  margin-top: 18px !important;
  color: var(--danger) !important;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }

  .metric-soil {
    grid-column: 1 / -1;
  }

  .login-shell {
    grid-template-columns: 1fr;
  }

  .login-intro {
    min-height: 380px;
  }

  .login-seal {
    margin-bottom: 70px;
  }
}

@media (max-width: 640px) {
  body {
    background-size: auto, 40px 40px, auto;
  }

  .shell {
    width: min(calc(100% - 20px), var(--content-width));
    padding-top: 16px;
  }

  .site-header {
    align-items: flex-start;
    gap: 10px;
    padding-bottom: 16px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
  }

  .brand strong {
    font-size: 21px;
  }

  .brand small {
    display: none;
  }

  .status-pill {
    min-height: 34px;
    padding: 0 9px;
    font-size: 11px;
  }

  .tab-bar {
    top: 8px;
    margin: 14px auto 24px;
  }

  .hero-grid,
  .switch-grid,
  .settings-grid,
  .automation-state-grid {
    grid-template-columns: 1fr;
  }

  .metric-soil {
    min-height: 190px;
    padding: 22px;
  }

  .metric-card {
    min-height: 142px;
  }

  .metric-value {
    font-size: 62px;
  }

  .control-section {
    padding: 22px 16px;
    border-radius: 22px;
  }

  .section-heading,
  .automation-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-heading > p {
    text-align: left;
  }

  .automation-heading .compact-switch {
    align-self: stretch;
    justify-content: flex-end;
  }

  .period-row {
    grid-template-columns: 1fr auto 1fr;
  }

  .period-remove {
    grid-column: 1 / -1;
    width: 100%;
  }

  .chart-frame {
    min-height: 330px;
    padding: 5px;
  }

  #history-canvas {
    height: 310px;
  }

  .command-row {
    grid-template-columns: 1fr auto;
  }

  .command-row > div:nth-child(2) {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  footer {
    flex-direction: column;
    gap: 6px;
  }

  .login-page {
    place-items: start center;
    padding: 10px;
  }

  .login-shell {
    min-height: calc(100vh - 20px);
    border-radius: 24px;
  }

  .login-intro {
    min-height: 320px;
  }

  .login-intro,
  .login-card {
    padding: 34px 24px;
  }

  .login-intro h1 {
    font-size: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}