:root {
  --bg-main: #0c1218;
  --bg-card: #121a22;
  --text-main: #dce9eb;
  --text-sub: #8ea4ab;
  --line: #273441;
  --brand: #19b8a1;
  --brand-soft: #113734;
  --accent: #ef8a42;
  --warn: #e06e57;
  --ok: #3cc285;
  --shadow: 0 16px 42px rgba(0, 0, 0, 0.35);
  --hero-bg: #141d26;
  --status-pill-bg: #0f171f;
  --card-border: #21303d;
  --thead-bg: #16212b;
  --thead-text: #a7bfca;
  --btn-secondary-bg: #1a2632;
  --btn-secondary-text: #bdd0d9;
  --btn-danger-bg: #35201d;
  --btn-danger-bg-hover: #4b2722;
  --btn-danger-text: #f3b2a4;
  --notice-border: #294250;
  --notice-bg: #14222c;
  --notice-text: #94b2bd;
  --input-bg: #101922;
  --result-bg: #111a23;
  --map-bg: #13222b;
  --fallback-bg: #111b24;
  --message-bg: #121b25;
  --topic-color: #7fd6d2;
  --message-body-color: #c5d6db;
  --payload-label: #84a1a9;
  --radius: 18px;
}

html[data-theme='light'] {
  --bg-main: #f3f7f5;
  --bg-card: #ffffff;
  --text-main: #112328;
  --text-sub: #4a5c61;
  --line: #d8e4e1;
  --brand: #007a73;
  --brand-soft: #d7f2ee;
  --accent: #ef8a42;
  --warn: #cf4f35;
  --ok: #1e9f5e;
  --shadow: 0 14px 40px rgba(3, 58, 54, 0.08);
  --hero-bg: #ffffff;
  --status-pill-bg: #ffffff;
  --card-border: #ebf2f0;
  --thead-bg: #f7fbfa;
  --thead-text: #32525b;
  --btn-secondary-bg: #eef5f3;
  --btn-secondary-text: #234247;
  --btn-danger-bg: #fbe8e3;
  --btn-danger-bg-hover: #f7d7ce;
  --btn-danger-text: #8a2e1f;
  --notice-border: #d6e5df;
  --notice-bg: #f7fbfa;
  --notice-text: #34535a;
  --input-bg: #fcfefd;
  --result-bg: #f8fbfa;
  --map-bg: #f2faf7;
  --fallback-bg: #f8fbfa;
  --message-bg: #fbfdfc;
  --topic-color: #0f5962;
  --message-body-color: #20363c;
  --payload-label: #5e7177;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--text-main);
  background: var(--bg-main);
}

.app-shell {
  width: min(1280px, 94vw);
  margin: 26px auto 40px;
}

.hero {
  border-radius: var(--radius);
  padding: 24px;
  background: var(--hero-bg);
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.hero-main {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}

.school-logo {
  width: clamp(120px, 14vw, 180px);
  height: auto;
  object-fit: contain;
  flex: 0 0 auto;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  margin: 0;
  font-family: 'Sora', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--brand);
}

h1 {
  margin: 6px 0 8px;
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.6rem, 2.8vw, 2.3rem);
}

.sub {
  margin: 0;
  color: var(--text-sub);
}

.status-stack {
  display: grid;
  gap: 10px;
  min-width: 220px;
}

.status-pill {
  border: 1px solid var(--line);
  background: var(--status-pill-bg);
  border-radius: 12px;
  padding: 8px 12px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-sub);
}

.status-pill strong {
  color: var(--brand);
  font-family: 'Sora', sans-serif;
}

.dashboard-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  grid-template-areas:
    'devices devices'
    'command messages'
    'map map';
  gap: 16px;
}

.card-devices {
  grid-area: devices;
}

.card-command {
  grid-area: command;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--card-border);
  padding: 16px;
  min-width: 0;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

.device-head-actions {
  display: flex;
  align-items: end;
  gap: 8px;
  flex-wrap: wrap;
}

.global-device-label {
  min-width: 210px;
}

h2 {
  margin: 0;
  font-family: 'Sora', sans-serif;
  font-size: 1.05rem;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(130deg, var(--brand), #0d9990);
  color: #fff;
}

.btn-secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
}

.btn-danger {
  background: var(--btn-danger-bg);
  color: var(--btn-danger-text);
}

.btn-danger:hover {
  background: var(--btn-danger-bg-hover);
}

.theme-toggle {
  width: 100%;
}

.gps-quick-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

.gps-actual-interval {
  width: 100%;
  min-height: 46px;
  margin-bottom: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--fallback-bg);
  display: grid;
  grid-template-columns: max-content minmax(44px, max-content) minmax(0, 1fr);
  align-items: center;
  gap: 8px;
}

.gps-actual-label {
  color: var(--text-sub);
  font-size: 0.9rem;
}

.gps-actual-interval strong {
  color: var(--brand);
  font-family: 'Sora', sans-serif;
  font-size: 1.25rem;
}

.gps-actual-meta {
  min-width: 0;
  color: var(--text-sub);
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}

.gps-control-panel {
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px dashed var(--line);
  background: var(--fallback-bg);
  display: grid;
  gap: 8px;
}

.inline-check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 0.9rem;
}

.inline-check input[type='checkbox'] {
  width: 16px;
  height: 16px;
}

.btn-mini {
  padding: 5px 8px;
  font-size: 0.78rem;
}

.table-wrap {
  max-height: 320px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

thead th {
  text-align: left;
  position: sticky;
  top: 0;
  background: var(--thead-bg);
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--thead-text);
}

th,
td {
  padding: 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  white-space: nowrap;
}

tr.selected-row td {
  background: var(--brand-soft);
}

.device-tag {
  display: inline-block;
  border-radius: 8px;
  padding: 2px 8px;
  font-size: 0.78rem;
  font-weight: 700;
}

.online {
  color: #0a6f43;
  background: #dbf4e8;
}

.offline {
  color: #8a2e1f;
  background: #fce5dd;
}

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

label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-sub);
}

select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.92rem;
  background: var(--input-bg);
  color: var(--text-main);
  font-family: 'Noto Sans SC', sans-serif;
}

input[type='number'] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.92rem;
  background: var(--input-bg);
  color: var(--text-main);
  font-family: 'Noto Sans SC', sans-serif;
}

.readonly-field {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.92rem;
  background: var(--input-bg);
  color: var(--text-main);
}

textarea {
  resize: vertical;
  min-height: 90px;
}

.result-box {
  margin: 12px 0 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--result-bg);
  min-height: 76px;
  padding: 10px;
  font-size: 0.84rem;
  overflow: auto;
}

.card-map {
  grid-area: map;
}

.hint {
  font-size: 0.84rem;
  color: var(--text-sub);
}

.map {
  width: 100%;
  min-height: 460px;
  border-radius: 14px;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--map-bg);
}

.gps-fallback {
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  background: var(--fallback-bg);
  border: 1px dashed var(--line);
  font-size: 0.84rem;
  color: var(--text-sub);
}

.card-messages {
  grid-area: messages;
}

.filter-group {
  display: flex;
  align-items: end;
  gap: 8px;
  flex-wrap: wrap;
}

.map-head-right {
  display: flex;
  align-items: end;
  gap: 10px;
  flex-wrap: wrap;
}

.message-list {
  max-height: 742px;
  overflow: auto;
  overflow-x: hidden;
  display: grid;
  gap: 10px;
  width: 100%;
}

.message-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: var(--message-bg);
  max-width: 100%;
  overflow: hidden;
}

.message-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  color: var(--text-sub);
}

.message-meta > * {
  min-width: 0;
}

.message-meta-side {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
}

.message-direction {
  font-weight: 700;
}

.topic {
  font-family: 'Sora', sans-serif;
  color: var(--topic-color);
  overflow-wrap: anywhere;
}

.message-body {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 0.78rem;
  white-space: pre-wrap;
  color: var(--message-body-color);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.payload-block + .payload-block {
  margin-top: 8px;
}

.payload-label {
  display: inline-block;
  margin-bottom: 4px;
  font-family: 'Sora', sans-serif;
  font-size: 0.72rem;
  color: var(--payload-label);
}

@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      'devices'
      'command'
      'messages'
      'map';
  }

  .message-list {
    max-height: 380px;
  }
}

@media (max-width: 720px) {
  .hero {
    flex-direction: column;
  }

  .school-logo {
    width: clamp(100px, 28vw, 140px);
  }

  .status-stack {
    width: 100%;
    min-width: 0;
  }

  th,
  td {
    font-size: 0.82rem;
    padding: 8px;
  }

  .gps-quick-row {
    grid-template-columns: 1fr;
  }

  .gps-actual-interval {
    grid-template-columns: 1fr;
    align-items: start;
  }
}