* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Verdana", "Georgia", serif;
  background: radial-gradient(circle at 10% 10%, #ffefd5 0%, #fce4ec 35%, #e1f5fe 100%);
  color: #1d2a38;
  min-height: 100vh;
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.header h1 {
  margin: 0;
  letter-spacing: 0.01em;
}

.header p {
  margin-top: 6px;
  color: #344357;
}

.panel {
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(29, 42, 56, 0.1);
  padding: 16px;
  margin-top: 14px;
  box-shadow: 0 20px 40px -30px rgba(0, 0, 0, 0.35);
}

.api-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

#apiBase {
  min-width: 260px;
  flex: 1;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #b6c7de;
}

button {
  border: 0;
  cursor: pointer;
  border-radius: 8px;
  padding: 10px 14px;
  background: #2f5d95;
  color: #fff;
  font-weight: 600;
}

button:hover {
  background: #254a75;
}

.status {
  padding: 8px 12px;
  border-radius: 999px;
  background: #ffecb3;
  font-weight: 600;
}

.hint {
  color: #445566;
  margin-bottom: 0;
  margin-top: 8px;
}

.serial-block {
  margin-top: 12px;
  border-top: 1px dashed #d8e2ef;
  padding-top: 12px;
}

.serial-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

#comPortSelect {
  min-width: 180px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #b6c7de;
  background: #fff;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card h2 {
  margin-top: 0;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.item {
  border: 1px solid #d8e2ef;
  border-radius: 10px;
  padding: 12px;
  background: #fff;
  box-shadow: 0 10px 20px -22px rgba(0, 0, 0, 0.4);
}

.item-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.value {
  font-size: 26px;
  font-weight: 700;
  margin: 4px 0;
}

.sub {
  font-size: 13px;
  color: #526379;
}

.controls {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

label {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 13px;
  color: #304257;
}

.controls input[type="number"],
.controls input[type="range"] {
  width: 120px;
  padding: 6px 8px;
}

.toggle {
  display: inline-flex;
  background: #edf2f7;
  border-radius: 10px;
  padding: 2px;
  width: fit-content;
}

.toggle button {
  background: #dde6f2;
  color: #1f2d3c;
}

.toggle button.active {
  background: #2f5d95;
  color: #fff;
}

.modeRow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.valveAuto,
.valveManual {
  border-top: 1px dashed #d6e0eb;
  margin-top: 8px;
  padding-top: 8px;
  display: grid;
  gap: 6px;
}

.hidden {
  display: none;
}

.status-ok {
  color: #0f7f2f;
  font-weight: 600;
}

.status-warn {
  color: #9a5700;
  font-weight: 600;
}

.status-error {
  color: #a61f1f;
  font-weight: 600;
}

.footer {
  margin-top: 12px;
  color: #3b4a60;
  min-height: 28px;
}

@media (max-width: 880px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .api-row {
    align-items: stretch;
  }
}


/* Compact 16 sensors / 32 valves layout */
.shell {
  max-width: 1540px;
  padding: 18px;
}

.hero {
  padding: 22px;
  margin-bottom: 14px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 54px);
  line-height: 0.95;
}

.hero p {
  max-width: 780px;
  margin: 0;
  font-size: 15px;
}

.grid {
  grid-template-columns: minmax(300px, 0.72fr) minmax(620px, 1.7fr);
  gap: 14px;
}

.panel {
  padding: 14px;
  border-radius: 18px;
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.controls,
.connection-bar,
.api-bar,
.settings-grid {
  gap: 8px;
}

button,
select,
input {
  min-height: 34px;
  padding: 7px 10px;
  border-radius: 10px;
  font-size: 13px;
}

.list {
  display: grid;
  gap: 8px;
}

#sensors {
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
}

#valves {
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
}

.item.compact-item {
  gap: 8px;
  padding: 10px;
  border-radius: 14px;
  min-width: 0;
}

.compact-head,
.compact-main,
.compact-controls,
.compact-actions,
.inline-control,
.range-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.compact-head,
.compact-main,
.compact-actions {
  justify-content: space-between;
}

.compact-head h3,
.compact-head h4 {
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.compact-main {
  flex-wrap: wrap;
}

.compact-controls {
  align-items: stretch;
  flex-direction: column;
  gap: 7px;
}

.compact-actions {
  gap: 6px;
}

.compact-actions button,
.mini-btn {
  min-height: 30px;
  padding: 5px 9px;
  border-radius: 9px;
  font-size: 12px;
}

.inline-control,
.range-control {
  min-width: 0;
  flex: 1 1 auto;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 12px;
  color: var(--muted);
}

.inline-control input {
  width: 74px;
}

.range-control input[type="range"] {
  flex: 1 1 90px;
  min-width: 90px;
}

.small-value {
  font-weight: 800;
  font-size: 15px;
  color: var(--ink);
}

.sensor-item .small-value {
  font-size: 20px;
}

.sensor-zone,
.valve-zone,
.status-pill {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(17, 38, 60, 0.08);
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.status-pill.open {
  background: rgba(34, 166, 112, 0.18);
  color: #0d6b45;
}

.status-pill.closed {
  background: rgba(221, 91, 81, 0.15);
  color: #9c2f26;
}

.toggle {
  flex: 0 0 auto;
  gap: 3px;
  padding: 3px;
  border-radius: 11px;
}

.toggle button {
  min-height: 28px;
  padding: 4px 8px;
  border-radius: 8px;
  font-size: 11px;
}

.meta-row,
.log,
.hint {
  font-size: 12px;
}

@media (max-width: 1100px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .shell {
    padding: 10px;
  }

  .hero,
  .panel {
    padding: 12px;
  }

  #sensors,
  #valves {
    grid-template-columns: 1fr;
  }
}


/* Channel cards like MCU panel */
.valve-item.channel-card {
  padding: 9px;
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(232, 236, 222, 0.72));
}

#valves {
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
}

.channel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

.channel-head strong {
  font-size: 15px;
  color: var(--ink);
}

.channel-title {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.channel-title small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 10px;
  font-weight: 800;
  color: var(--muted);
}

.channel-head span,
.channel-connect,
.valve-state-row span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.channel-lamp {
  display: inline-block;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 1px solid rgba(19, 32, 47, 0.28);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.8), 0 1px 3px rgba(19, 32, 47, 0.22);
  background: #d8dde2;
}

.channel-lamp.on {
  background: radial-gradient(circle at 35% 30%, #b5ff8d, #159400 62%, #0e6000);
}

.channel-lamp.off {
  background: linear-gradient(145deg, #f5f6f8, #cfd5da);
}

.channel-lamp.alarm {
  background: radial-gradient(circle at 35% 30%, #ffb9b9, #ff1010 62%, #930000);
}

.channel-id-grid {
  display: grid;
  grid-template-columns: 0.72fr 0.82fr 0.9fr 0.9fr;
  align-items: end;
  gap: 6px;
}

.channel-id-grid label {
  display: grid;
  gap: 3px;
  min-width: 0;
  font-size: 11px;
  color: var(--muted);
}

.channel-id-grid input,
.channel-id-grid select {
  width: 100%;
  min-height: 28px;
  padding: 4px 7px;
  border-radius: 7px;
  font-size: 12px;
}

.channel-connect {
  min-height: 28px;
  justify-content: center;
  padding-bottom: 3px;
  font-size: 11px;
  color: var(--muted);
}

.channel-body {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 8px;
  align-items: stretch;
}

.temperature-widget {
  display: grid;
  grid-template-columns: 19px 15px;
  grid-template-rows: 1fr auto;
  gap: 3px;
  min-height: 152px;
}

.temp-scale {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
  font-size: 10px;
  line-height: 1;
  color: #0d3550;
}

.temp-bar {
  position: relative;
  overflow: hidden;
  align-self: stretch;
  border: 1px solid rgba(13, 53, 80, 0.4);
  background: repeating-linear-gradient(to top, rgba(13, 53, 80, 0.1) 0 1px, transparent 1px 18px), #f6fbff;
}

.temp-bar b {
  position: absolute;
  left: 1px;
  right: 1px;
  bottom: 1px;
  min-height: 3px;
  background: linear-gradient(180deg, #ff6a3d, #ff1d1d);
}

.temp-now {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 11px;
  font-weight: 800;
  color: var(--ink);
}

.channel-workarea {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.angle-panel,
.position-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 4px 8px;
  padding: 7px 9px;
  border: 1px solid rgba(19, 32, 47, 0.12);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.64);
}

.angle-panel span,
.position-panel span {
  font-size: 12px;
  color: var(--muted);
}

.angle-panel strong,
.position-panel strong {
  font-size: 20px;
  color: var(--ink);
}

.angle-panel small,
.position-panel small {
  grid-column: 1 / -1;
  font-size: 11px;
  color: var(--muted);
}

.position-panel {
  background: rgba(245, 251, 255, 0.72);
}

.channel-data-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.channel-data-grid div {
  display: grid;
  gap: 2px;
  min-width: 0;
  padding: 6px 7px;
  border: 1px solid rgba(19, 32, 47, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.58);
}

.channel-data-grid span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 10px;
  color: var(--muted);
}

.channel-data-grid strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  color: var(--ink);
}

.delta.ok {
  color: #0d6b45;
}

.delta.hot {
  color: #b73520;
}

.delta.cold {
  color: #1759a6;
}

.channel-position {
  gap: 6px;
  font-size: 11px;
}

.valve-state-row,
.channel-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.valve-state-row {
  font-size: 11px;
  color: var(--ink);
}

.channel-actions button {
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 11px;
}

.channel-mode-line {
  justify-content: space-between;
  gap: 5px;
}

.channel-mode-line .toggle {
  margin-right: auto;
}

@media (max-width: 560px) {
  .channel-id-grid {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .channel-connect {
    justify-content: flex-start;
  }
}


/* Full 16 channel operator blocks */
#sensors,
#valves {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.full-channel-card {
  gap: 9px;
}

.full-channel-id-grid {
  grid-template-columns: 0.7fr 0.8fr 1.5fr;
}

.full-channel-body {
  grid-template-columns: 48px minmax(0, 1fr);
}

.top-metrics-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
}

.main-position-panel {
  background: rgba(228, 247, 255, 0.82);
}

.main-position-panel strong {
  font-size: 28px;
  line-height: 1;
}

.full-channel-data-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.full-state-row {
  justify-content: space-around;
  padding: 6px 8px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(19, 32, 47, 0.1);
}

@media (max-width: 1260px) {
  #sensors,
  #valves {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  #sensors,
  #valves {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 560px) {
  .top-metrics-row {
    grid-template-columns: 1fr;
  }

  .full-channel-id-grid,
  .full-channel-data-grid {
    grid-template-columns: 1fr;
  }
}

/* Presentation upgrade for operator dashboard */
:root {
  --panel-blue: #123a5f;
  --panel-blue-2: #1f5f93;
  --panel-steel: #eef4f8;
  --panel-line: rgba(31, 95, 147, 0.24);
  --ok-green: #159447;
  --warn-red: #d63b2a;
  --amber: #f5b43f;
}

body {
  background:
    radial-gradient(circle at 12% 12%, rgba(45, 111, 167, 0.18), transparent 30%),
    radial-gradient(circle at 88% 4%, rgba(245, 180, 63, 0.22), transparent 24%),
    linear-gradient(135deg, #f6eadb 0%, #f7f1f5 42%, #e8f1fb 100%);
}

.shell {
  max-width: 1680px;
}

.hero {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(18, 58, 95, 0.14);
  box-shadow: 0 18px 60px rgba(18, 58, 95, 0.14);
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.92), rgba(234, 243, 250, 0.88)),
    repeating-linear-gradient(90deg, rgba(18, 58, 95, 0.04) 0 1px, transparent 1px 18px);
}

.hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -110px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: conic-gradient(from 220deg, rgba(31, 95, 147, 0.22), rgba(245, 180, 63, 0.2), rgba(31, 95, 147, 0.08));
  filter: blur(2px);
}

.hero h1 {
  position: relative;
  z-index: 1;
  letter-spacing: -0.035em;
  color: #0d2e4d;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.9);
}

.hero p {
  position: relative;
  z-index: 1;
}

.panel {
  border: 1px solid rgba(18, 58, 95, 0.14);
  box-shadow: 0 16px 44px rgba(18, 58, 95, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 250, 253, 0.92)),
    repeating-linear-gradient(0deg, rgba(18, 58, 95, 0.025) 0 1px, transparent 1px 20px);
}

.panel h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #0d2e4d;
}

.panel h2::before {
  content: "";
  width: 11px;
  height: 28px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--panel-blue-2), var(--amber));
  box-shadow: 0 0 0 4px rgba(31, 95, 147, 0.08);
}

button {
  box-shadow: 0 8px 18px rgba(18, 58, 95, 0.14);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: saturate(1.08);
  box-shadow: 0 11px 24px rgba(18, 58, 95, 0.18);
}

input,
select {
  border: 1px solid rgba(18, 58, 95, 0.22);
  box-shadow: inset 0 1px 2px rgba(18, 58, 95, 0.06);
  background: linear-gradient(180deg, #ffffff, #f7fbff);
}

.full-channel-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(18, 58, 95, 0.22);
  box-shadow:
    0 14px 32px rgba(18, 58, 95, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.86);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(232, 241, 248, 0.95)),
    repeating-linear-gradient(90deg, rgba(18, 58, 95, 0.035) 0 1px, transparent 1px 16px);
}

.full-channel-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(180deg, var(--panel-blue-2), var(--ok-green), var(--amber));
}

.full-channel-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 44px;
  background: linear-gradient(90deg, rgba(18, 58, 95, 0.1), transparent 60%);
  pointer-events: none;
}

.channel-head,
.channel-id-grid,
.channel-body {
  position: relative;
  z-index: 1;
}

.channel-head {
  min-height: 42px;
  padding: 8px 10px 8px 14px;
  margin: -2px -2px 2px 0;
  border-radius: 12px;
  background: linear-gradient(90deg, rgba(18, 58, 95, 0.1), rgba(255, 255, 255, 0.64));
}

.channel-title strong {
  font-size: 18px;
  letter-spacing: -0.02em;
}

.channel-title small {
  font-size: 11px;
  color: #42647f;
}

.channel-lamp {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.88);
  box-shadow:
    inset 0 1px 3px rgba(255, 255, 255, 0.8),
    0 0 0 1px rgba(18, 58, 95, 0.16),
    0 3px 9px rgba(18, 58, 95, 0.22);
}

.channel-lamp.on {
  box-shadow:
    inset 0 1px 3px rgba(255, 255, 255, 0.82),
    0 0 0 1px rgba(21, 148, 71, 0.28),
    0 0 14px rgba(21, 148, 71, 0.55);
}

.channel-lamp.alarm {
  box-shadow:
    inset 0 1px 3px rgba(255, 255, 255, 0.82),
    0 0 0 1px rgba(214, 59, 42, 0.28),
    0 0 14px rgba(214, 59, 42, 0.48);
}

.channel-id-grid {
  padding: 9px;
  border-radius: 12px;
  border: 1px solid rgba(18, 58, 95, 0.12);
  background: rgba(255, 255, 255, 0.62);
}

.channel-id-grid label {
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.035em;
}

.channel-id-grid input,
.channel-id-grid select {
  font-weight: 800;
  color: #0d2e4d;
}

.temperature-widget {
  padding: 8px 4px;
  border-radius: 14px;
  border: 1px solid rgba(18, 58, 95, 0.16);
  background: linear-gradient(180deg, #fafdff, #eaf3f8);
  box-shadow: inset 0 1px 4px rgba(18, 58, 95, 0.08);
}

.temp-bar {
  border-radius: 8px;
  border-color: rgba(18, 58, 95, 0.34);
  box-shadow: inset 0 2px 8px rgba(18, 58, 95, 0.12);
}

.temp-bar b {
  border-radius: 7px 7px 2px 2px;
  background: linear-gradient(180deg, #ffb347, #ff4f2d 52%, #d91414);
  box-shadow: 0 0 12px rgba(255, 79, 45, 0.42);
}

.temp-now {
  color: #0d2e4d;
}

.top-metrics-row {
  align-items: stretch;
}

.position-panel,
.angle-panel {
  border-color: rgba(31, 95, 147, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 8px 18px rgba(18, 58, 95, 0.08);
}

.position-panel span,
.angle-panel span {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.position-panel strong,
.angle-panel strong {
  color: #0b365b;
  text-shadow: 0 1px 0 #fff;
}

.main-position-panel {
  background:
    linear-gradient(135deg, rgba(226, 246, 255, 0.96), rgba(255, 255, 255, 0.9)),
    radial-gradient(circle at 90% 15%, rgba(31, 95, 147, 0.15), transparent 35%);
}

.angle-panel {
  background:
    linear-gradient(135deg, rgba(255, 244, 218, 0.96), rgba(255, 255, 255, 0.9)),
    radial-gradient(circle at 90% 15%, rgba(245, 180, 63, 0.22), transparent 35%);
}

.channel-data-grid div {
  border-color: rgba(18, 58, 95, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(239, 246, 251, 0.76));
}

.channel-data-grid span {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.035em;
}

.channel-data-grid strong {
  font-size: 13px;
}

.full-state-row {
  background: linear-gradient(90deg, rgba(21, 148, 71, 0.08), rgba(255, 255, 255, 0.72), rgba(214, 59, 42, 0.08));
}

.channel-actions {
  padding-top: 2px;
}

.quickPosition[data-position="100"] {
  background: linear-gradient(180deg, #2eaf68, #128246);
  color: #fff;
}

.quickPosition[data-position="0"] {
  background: linear-gradient(180deg, #f06a57, #c93024);
  color: #fff;
}

.channel-mode .active {
  background: linear-gradient(180deg, #234d73, #123a5f);
  color: #fff;
}

.hidden {
  display: none !important;
}

#modbusTransport {
  min-width: 160px;
}

#tcpHost {
  min-width: 150px;
}

#tcpPort {
  width: 92px;
}

#modbusSlaveId {
  width: 78px;
}

.serial-row label {
  font-weight: 800;
  color: #24445e;
}

/* Single full-width channel workspace */
.grid {
  grid-template-columns: 1fr;
}

.panel:has(#valves) {
  display: block;
}

.grid > *:has(#valves),
#valves {
  display: none;
}