@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  color-scheme: light;
  /* Agricultural Intelligence Color Palette */
  --bg: #faf8f3;
  --bg-texture: linear-gradient(180deg, rgba(250,248,243,.9) 0%, #f2ede1 100%);
  --panel: #fffef9;
  --panel-elevated: #ffffff;
  --ink: #2d3319;
  --ink-soft: #3a4424;
  --muted: #6b7055;
  --muted-light: #8a8f78;
  --line: #e8e4d8;
  --line-soft: #f0ede3;

  /* Semantic Colors - Agricultural Theme */
  --forest: #5a7c3e;
  --forest-deep: #4a6632;
  --sage: #7d9b5e;
  --earth: #9a7a4e;
  --earth-light: #cbae7c;
  --sky: #4a90e2;
  --sky-light: #6ba8ea;
  --harvest: #d4a017;
  --alert-critical: #dc2626;
  --alert-warn: #f59e0b;
  --alert-success: #5a7c3e;

  /* Soft Backgrounds */
  --bg-critical: #fdf5f3;
  --bg-warn: #fdf9f3;
  --bg-success: #f3f8f5;
  --bg-info: #f3f7fa;

  /* Shadows & Depth */
  --shadow-sm: 0 2px 8px rgba(29, 46, 29, 0.04);
  --shadow-md: 0 4px 16px rgba(29, 46, 29, 0.08);
  --shadow-lg: 0 8px 32px rgba(29, 46, 29, 0.12);
  --shadow-xl: 0 16px 48px rgba(29, 46, 29, 0.16);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  background: var(--bg-texture);
  background-attachment: fixed;
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(122, 155, 126, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 111, 71, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231a2e1a' fill-opacity='0.015'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: var(--radius-md);
  background: var(--forest);
  color: white;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.01em;
  min-height: 44px;
  padding: 0 20px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

button:hover::before {
  opacity: 1;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  background: var(--forest-deep);
}

button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

input,
select {
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  color: var(--ink);
  min-height: 44px;
  padding: 0 14px;
  width: 100%;
  transition: all var(--transition-base);
  font-size: 14px;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--forest);
  box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.1);
}

input::placeholder {
  color: var(--muted-light);
}

.topbar {
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  min-height: 90px;
  padding: 20px 32px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  animation: slideDown 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.topbar h1,
.panel h2 {
  margin: 0;
}

.topbar h1 {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--forest-deep);
  letter-spacing: -0.02em;
}

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

.shell {
  display: grid;
  gap: 24px;
  margin: 0 auto;
  max-width: 1520px;
  padding: 32px 32px 64px;
  position: relative;
  z-index: 1;
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.eyebrow {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 6px;
  text-transform: uppercase;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.toolbar,
.panel,
.sensor-card {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all var(--transition-base);
}

.toolbar {
  align-items: end;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(180px, 240px) minmax(260px, 440px) auto auto;
  padding: 20px;
  background: linear-gradient(135deg, var(--panel-elevated) 0%, var(--panel) 100%);
}

.toolbar label span {
  color: var(--ink-soft);
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}

.secondary-button {
  background: var(--bg-info);
  color: var(--forest);
  border: 1.5px solid var(--line);
}

.secondary-button:hover {
  background: var(--panel);
  border-color: var(--forest);
  color: var(--forest-deep);
}

.danger-button {
  background: var(--alert-critical);
}

.danger-button:hover {
  background: #a83a2d;
}

.status-pill {
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  min-height: 36px;
  padding: 8px 16px;
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
}

.status-ok {
  background: var(--bg-success);
  color: var(--alert-success);
  border: 1px solid rgba(90, 138, 106, 0.2);
}

.status-muted {
  background: var(--line-soft);
  color: var(--muted);
  border: 1px solid var(--line);
}

.status-warn {
  background: var(--bg-warn);
  color: var(--earth);
  border: 1px solid rgba(212, 165, 116, 0.3);
}

.status-critical {
  background: var(--bg-critical);
  color: var(--alert-critical);
  border: 1px solid rgba(196, 69, 54, 0.3);
}

.alert-banner {
  background: linear-gradient(135deg, var(--bg-critical) 0%, #fef8f6 100%);
  border: 1.5px solid rgba(196, 69, 54, 0.2);
  border-left: 4px solid var(--alert-critical);
  border-radius: var(--radius-lg);
  color: var(--alert-critical);
  font-weight: 600;
  padding: 18px 20px;
  box-shadow: var(--shadow-md);
  animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hidden {
  display: none !important;
}

.sensor-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
}

.sensor-card {
  min-height: 170px;
  padding: 24px;
  background: linear-gradient(135deg, var(--panel-elevated) 0%, var(--panel) 100%);
  border: 1px solid var(--line-soft);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.sensor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--forest) 0%, var(--sage) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sensor-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--line);
}

.sensor-card:hover::before {
  opacity: 1;
}

.sensor-card .value {
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  margin: 24px 0 10px;
  color: var(--forest-deep);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: -0.02em;
}

.sensor-card .unit {
  color: var(--muted);
  font-size: 16px;
  margin-left: 6px;
  font-weight: 500;
}

.sensor-card .meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.grid-2 {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 2fr) minmax(300px, 0.85fr);
}

.grid-3 {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.85fr) minmax(320px, 1fr);
}

.panel {
  min-width: 0;
  padding: 24px;
  transition: all var(--transition-base);
}

.panel:hover {
  box-shadow: var(--shadow-lg);
}

.panel-heading {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.panel h2 {
  font-size: 20px;
  white-space: nowrap;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  color: var(--forest-deep);
  letter-spacing: -0.01em;
}

.panel h3 {
  font-size: 16px;
  margin: 0 0 12px;
  font-weight: 600;
  color: var(--ink-soft);
}

.muted {
  color: var(--muted);
  line-height: 1.6;
}

.list {
  display: grid;
  gap: 12px;
  max-height: 400px;
  overflow: auto;
  padding-right: 4px;
}

.list::-webkit-scrollbar {
  width: 6px;
}

.list::-webkit-scrollbar-track {
  background: var(--line-soft);
  border-radius: 3px;
}

.list::-webkit-scrollbar-thumb {
  background: var(--muted-light);
  border-radius: 3px;
}

.list::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}

.list-item {
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  background: var(--panel-elevated);
  transition: all var(--transition-base);
}

.list-item:hover {
  border-left-width: 4px;
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
}

.list-item.critical {
  border-left-color: var(--alert-critical);
  background: linear-gradient(90deg, var(--bg-critical) 0%, var(--panel-elevated) 100%);
}

.list-item.warn {
  border-left-color: var(--alert-warn);
  background: linear-gradient(90deg, var(--bg-warn) 0%, var(--panel-elevated) 100%);
}

.list-title {
  align-items: center;
  display: flex;
  font-weight: 600;
  gap: 10px;
  justify-content: space-between;
  color: var(--ink-soft);
  font-size: 14px;
}

.list-body {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  margin-top: 8px;
}

.compact-list .list-item {
  padding: 12px 14px;
}

.resolve-button {
  background: var(--bg-success);
  color: var(--alert-success);
  border: 1px solid rgba(90, 138, 106, 0.3);
  min-height: 32px;
  padding: 0 12px;
  font-size: 13px;
}

.resolve-button:hover {
  background: var(--alert-success);
  color: white;
}

.endpoint-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

pre {
  background: linear-gradient(135deg, #1a2e1a 0%, #0f1f0f 100%);
  border-radius: var(--radius-md);
  border: 1px solid rgba(122, 155, 126, 0.2);
  color: #d4e8d4;
  margin: 0;
  min-height: 220px;
  overflow: auto;
  padding: 18px;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

pre::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

pre::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}

pre::-webkit-scrollbar-thumb {
  background: rgba(122, 155, 126, 0.4);
  border-radius: 4px;
}

pre::-webkit-scrollbar-thumb:hover {
  background: rgba(122, 155, 126, 0.6);
}

code {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Droid Sans Mono', 'Source Code Pro', monospace;
  font-size: 12px;
  line-height: 1.7;
}

.toast {
  background: var(--forest-deep);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  bottom: 24px;
  box-shadow: var(--shadow-xl);
  color: white;
  font-weight: 600;
  left: 50%;
  max-width: min(540px, calc(100vw - 40px));
  padding: 16px 20px;
  position: fixed;
  transform: translateX(-50%);
  z-index: 200;
  animation: toastSlide 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toastSlide {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Camera Grid */
.camera-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
  padding: 20px 0;
}

.camera-grid.demo-camera-grid {
  grid-template-columns: minmax(0, 1fr);
}

.camera-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: white;
  transition: box-shadow 0.2s;
}

.camera-card:hover {
  box-shadow: var(--shadow-md);
}

.camera-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  background: var(--panel-elevated);
  border-bottom: 1px solid var(--line-soft);
}

.camera-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.camera-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
}

.camera-status.online {
  color: var(--alert-success);
}

.camera-status.offline {
  color: var(--muted);
}

.camera-snapshot {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  overflow: hidden;
}

.camera-snapshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.camera-snapshot.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
}

.demo-camera-card {
  box-shadow: var(--shadow-md);
}

.demo-camera-snapshot {
  aspect-ratio: 20 / 9;
}

.demo-camera-video {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.monitor-clock {
  align-items: center;
  background: rgba(0, 0, 0, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-sm);
  color: #f7fff7;
  display: flex;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  font-weight: 600;
  gap: 8px;
  left: 14px;
  letter-spacing: 0;
  line-height: 1;
  padding: 8px 10px;
  position: absolute;
  top: 14px;
  z-index: 2;
}

.record-dot {
  animation: pulse 1.4s ease-in-out infinite;
  background: #ff3b30;
  border-radius: 999px;
  box-shadow: 0 0 0 4px rgba(255, 59, 48, 0.18);
  height: 8px;
  width: 8px;
}

.vision-hud {
  align-items: center;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.18));
  bottom: 0;
  color: #f7fff7;
  display: flex;
  flex-wrap: wrap;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  gap: 10px;
  justify-content: space-between;
  left: 0;
  letter-spacing: 0;
  padding: 34px 14px 14px;
  position: absolute;
  right: 0;
  z-index: 2;
}

.vision-hud span {
  background: rgba(20, 120, 54, 0.72);
  border: 1px solid rgba(104, 255, 135, 0.36);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
}

.snapshot-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 15px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.time-label {
  font-size: 13px;
  font-weight: 500;
}

.refresh-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s;
}

.refresh-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 1100px) {
  .sensor-grid,
  .grid-2,
  .grid-3,
  .endpoint-grid {
    grid-template-columns: 1fr 1fr;
  }

  .camera-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar,
  .toolbar {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
    gap: 16px;
    padding: 20px;
    min-height: auto;
  }

  .topbar h1 {
    font-size: 24px;
  }

  .shell {
    padding: 20px;
    gap: 20px;
  }

  .sensor-grid,
  .grid-2,
  .grid-3,
  .endpoint-grid {
    grid-template-columns: 1fr;
  }

  .sensor-card .value {
    font-size: 36px;
  }

  .panel {
    padding: 20px;
  }

  .panel h2 {
    font-size: 18px;
  }
}

/* Utility animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Selection styling */
::selection {
  background: rgba(45, 90, 61, 0.2);
  color: var(--forest-deep);
}

::-moz-selection {
  background: rgba(45, 90, 61, 0.2);
  color: var(--forest-deep);
}

/* ── Login Screen ─────────────────────────────────────────────────────────── */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-texture);
  padding: 24px;
}

.login-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
}

.login-card .eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 8px;
}

.login-card h1 {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--forest-deep);
  margin: 0 0 32px;
  line-height: 1.2;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-form label span {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
}

.login-form input {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.login-form input:focus {
  border-color: var(--forest);
  box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.12);
}

.login-form button[type="submit"] {
  margin-top: 4px;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
}

.login-hint {
  font-size: 13px;
  color: var(--sky);
  background: var(--bg-info);
  border: 1px solid rgba(74, 124, 158, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 0 0 16px 0;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: var(--bg-success);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.info-row span {
  font-size: 13px;
  color: var(--muted);
}

.info-row strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--forest);
  letter-spacing: 0.5px;
}

.login-error {
  font-size: 13px;
  color: var(--alert-critical);
  background: var(--bg-critical);
  border: 1px solid rgba(196, 69, 54, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.farm-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  padding: 4px 10px;
  background: var(--bg-success);
  border-radius: var(--radius-sm);
}

/* ── Chart Enhancements ─────────────────────────────────────────────────── */

.chart-panel {
  grid-column: 1 / -1;
}

.chart-controls {
  display: flex;
  gap: 12px;
  align-items: center;
}

.chart-canvas-wrap {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #fbfdfb 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 10px 8px 4px;
}

.chart-tooltip {
  position: absolute;
  z-index: 5;
  min-width: 168px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(26, 46, 26, 0.92);
  color: #fff;
  font-size: 12px;
  line-height: 1.55;
  pointer-events: none;
  box-shadow: var(--shadow-lg);
}

.chart-insight {
  margin-top: 12px;
  padding: 12px 14px;
  border: 1px solid rgba(74, 124, 158, 0.16);
  border-radius: var(--radius-md);
  background: var(--bg-info);
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 0 0;
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-soft);
  background: var(--panel-elevated);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 6px 10px;
}

.legend-color {
  width: 24px;
  height: 3px;
  border-radius: 2px;
}

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

.stat-card {
  padding: 16px;
  background: var(--bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-trend {
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0;
  padding: 2px 7px;
  text-transform: none;
}

.stat-trend.up {
  background: var(--bg-warn);
  color: #a87435;
}

.stat-trend.down {
  background: var(--bg-info);
  color: var(--sky);
}

.stat-trend.flat {
  background: var(--bg-success);
  color: var(--forest);
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--forest-deep);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1;
}

.stat-unit {
  font-size: 14px;
  color: var(--muted);
  margin-left: 4px;
  font-weight: 500;
}

.stat-range {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

#historyChart {
  display: block;
  height: 440px;
  max-width: 100%;
  width: 100%;
  border-radius: var(--radius-md);
}

/* ── 选择鸭场页 ── */
.farm-select-card { max-width: 480px; }
.farm-options {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.farm-option {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  border-radius: var(--radius-lg, 14px);
  border: 1px solid var(--line);
  background: var(--panel-elevated);
  color: var(--ink);
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.farm-option::before { content: none; display: none; }
.farm-option:hover {
  border-color: var(--forest);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.farm-option-icon { font-size: 30px; line-height: 1; flex-shrink: 0; }
.farm-option-body { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 0; }
.farm-option-name { font-size: 17px; font-weight: 600; color: var(--forest-deep); }
.farm-option-desc { font-size: 13px; color: var(--muted); line-height: 1.45; }
.farm-option-arrow { font-size: 20px; color: var(--sage); flex-shrink: 0; }