:root {
  --primary: #2F7D4A;
  --primary-strong: #256B3E;
  --primary-dark: #183B27;
  --primary-tint: #E7F1EA;
  --primary-line: #CFE3D6;
  --fertility-bg: #F4FAF6;

  --bg: #F5F7F8;
  --panel: #FFFFFF;
  --text: #18221D;
  --muted: #5E6B63;
  --muted-soft: #728078;
  --border: #E3E9E5;

  --success: #57C878;
  --success-strong: #1E7A3C;
  --success-tint: #E4F4E9;
  --warn-strong: #8A5200;
  --warn-tint: #FBF0DA;
  --danger-strong: #A6261B;
  --danger-tint: #FBE5E3;

  --radius: 12px;
  --radius-sm: 8px;

  --shadow: 0 1px 2px rgba(24, 34, 29, 0.05), 0 4px 14px rgba(24, 34, 29, 0.045);
  --shadow-lift: 0 8px 24px rgba(24, 34, 29, 0.1);

  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 32px);
  --header-h: 132px;

  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, p {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 20;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
}

/* Header */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--panel);
  border-top: 3px solid var(--primary);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px var(--gutter);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--primary-tint);
  color: var(--primary);
  flex-shrink: 0;
}

.brand-mark svg {
  width: 24px;
  height: 24px;
}

.brand-text {
  min-width: 0;
}

.brand h1 {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--primary-dark);
}

.brand-sub {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--muted-soft);
  flex-shrink: 0;
}

.status[data-state="online"] .status-dot {
  background: var(--success);
}

.status[data-state="online"] #statusText {
  color: var(--success-strong);
}

.status[data-state="offline"] .status-dot {
  background: var(--danger-strong);
}

.status[data-state="offline"] #statusText {
  color: var(--danger-strong);
}

.meta-divider {
  width: 1px;
  height: 30px;
  background: var(--border);
  flex-shrink: 0;
}

.last-update {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.last-update-label {
  font-size: 11px;
  color: var(--muted);
}

.last-update-value {
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-strong);
}

.btn-icon {
  width: 17px;
  height: 17px;
}

.btn[disabled] {
  opacity: 0.65;
  cursor: progress;
}

.btn.is-loading .btn-icon {
  animation: spin 0.9s linear infinite;
}

/* Nav */
.tabs {
  position: sticky;
  top: var(--header-h);
  z-index: 9;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.tabs-inner {
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  gap: 6px;
  padding: 8px var(--gutter);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs-inner::-webkit-scrollbar {
  display: none;
}

.tabs a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.tabs a:hover {
  background: var(--primary-tint);
  color: var(--primary-dark);
}

.tabs a.is-active {
  background: var(--primary-tint);
  color: var(--primary-dark);
}

/* Layout */
main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(20px, 3vw, 30px) var(--gutter);
  display: flex;
  flex-direction: column;
  gap: clamp(22px, 3vw, 32px);
}

#ringkasan,
#monitoring,
#rekomendasi,
#riwayat {
  scroll-margin-top: 140px;
}

.block-head,
.panel-head {
  margin-bottom: 18px;
}

.section-title {
  position: relative;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--primary-dark);
  padding-bottom: 9px;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 3px;
  border-radius: 2px;
  background: var(--primary);
}

.section-sub {
  margin-top: 7px;
  font-size: 13px;
  color: var(--muted);
}

/* Alert */
.alert {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 18px;
  background: var(--danger-tint);
  border: 1px solid #F0C7C3;
  border-radius: var(--radius);
}

.alert[hidden] {
  display: none;
}

.alert-title {
  font-weight: 700;
  color: var(--danger-strong);
}

.alert-text {
  font-size: 13px;
  color: var(--text);
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

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

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.card-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--primary-tint);
  color: var(--primary);
  flex-shrink: 0;
}

.card-icon svg {
  width: 19px;
  height: 19px;
}

.card-value {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-height: 40px;
}

.card-value .value {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  border-radius: 4px;
}

.card-value .unit {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.card-meta {
  font-size: 11px;
  color: var(--muted);
}

#sensorCards.is-loading .card-value .value {
  display: inline-block;
  min-width: 58px;
  color: transparent;
  background: linear-gradient(90deg, #EDF1EE 25%, #E1E7E3 37%, #EDF1EE 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
}

.card-value .value.flash {
  animation: valueflash 0.7s ease;
}

.card-fertility {
  background: var(--fertility-bg);
  border-color: var(--primary-line);
}

.card-fertility .value-status {
  font-size: 26px;
}

.value-status[data-level="high"] {
  color: var(--success-strong);
}

.value-status[data-level="mid"] {
  color: var(--warn-strong);
}

.value-status[data-level="low"] {
  color: var(--danger-strong);
}

/* Split: chart + recommendation */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.panel {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.chart-wrap {
  position: relative;
  height: 320px;
}

.chart-note {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  background: var(--panel);
  text-align: center;
  padding: 16px;
}

.chart-note[hidden] {
  display: none;
}

/* Recommendation */
.rec-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fertility-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
}

.fertility-box[data-level="high"] {
  background: var(--success-tint);
  border-color: #C4E6CE;
}

.fertility-box[data-level="mid"] {
  background: var(--warn-tint);
  border-color: #EFD9AE;
}

.fertility-box[data-level="low"] {
  background: var(--danger-tint);
  border-color: #F0C7C3;
}

.fertility-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.fertility-value {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--primary-dark);
}

.fertility-box[data-level="high"] .fertility-value {
  color: var(--success-strong);
}

.fertility-box[data-level="mid"] .fertility-value {
  color: var(--warn-strong);
}

.fertility-box[data-level="low"] .fertility-value {
  color: var(--danger-strong);
}

.scale {
  list-style: none;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
}

.scale li {
  flex: 1;
  text-align: center;
  padding: 7px 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.scale li.is-active {
  color: #fff;
}

.scale li.is-active[data-level="low"] {
  background: var(--danger-strong);
  border-color: var(--danger-strong);
}

.scale li.is-active[data-level="mid"] {
  background: var(--warn-strong);
  border-color: var(--warn-strong);
}

.scale li.is-active[data-level="high"] {
  background: var(--success-strong);
  border-color: var(--success-strong);
}

.rec-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
}

/* History table */
.table-wrap {
  position: relative;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

th, td {
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}

th {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: #FAFCFB;
}

td[data-level="high"] {
  color: var(--success-strong);
  font-weight: 600;
}

td[data-level="mid"] {
  color: var(--warn-strong);
  font-weight: 600;
}

td[data-level="low"] {
  color: var(--danger-strong);
  font-weight: 600;
}

.table-note {
  padding: 18px 4px;
  font-size: 13px;
  color: var(--muted);
}

.table-note[hidden] {
  display: none;
}

/* Footer */
.foot {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px var(--gutter) 40px;
  font-size: 12px;
  color: var(--muted);
}

/* Motion */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: 0 0;
  }
}

@keyframes valueflash {
  0% {
    background: var(--primary-tint);
  }
  100% {
    background: transparent;
  }
}

/* Responsive */
@media (max-width: 960px) {
  :root {
    --header-h: 120px;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 560px) {
  :root {
    --header-h: 108px;
  }

  .topbar-inner {
    flex-wrap: wrap;
    gap: 12px;
  }

  .topbar-actions {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .meta-divider {
    display: none;
  }

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

  .brand h1 {
    font-size: 19px;
  }

  .card-value .value {
    font-size: 30px;
  }

  .chart-wrap {
    height: 260px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .card:hover {
    transform: none;
  }
}