@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

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

:root {
  --bg: #f5f4f0;
  --surface: #ffffff;
  --surface-alt: #f0efe9;
  --border: #e2e0d8;
  --border-strong: #c8c5bb;
  --text: #1a1917;
  --text-muted: #6b6860;
  --text-hint: #9e9b94;
  --accent: #2a5caa;
  --accent-light: #e8eef8;
  --accent-hover: #1e4a8a;
  --danger: #c0392b;
  --success: #1a7a4a;
  --success-bg: #e8f5ed;
  --led-r: #e74c3c;
  --led-g: #27ae60;
  --led-b: #2980b9;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.05);
  --font: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', monospace;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  padding: 2rem 1rem;
}

/* ── Container ── */
.container {
  max-width: 760px;
  margin: 0 auto 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.container:first-of-type::before {
  content: "Painel Duarte";
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-hint);
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 1.5rem;
  font-family: var(--font-mono);
}

/* ── Form ── */
form {
  padding: 1.75rem 1.5rem;
  display: grid;
  gap: 1.25rem;
}

/* Labels */
label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

/* All inputs, selects */
input[type="text"],
input[type="date"],
select {
  width: 100%;
  height: 42px;
  padding: 0 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

input[type="text"]:hover,
input[type="date"]:hover,
select:hover {
  border-color: var(--border-strong);
}

input[type="text"]:focus,
input[type="date"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239e9b94' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* ── Field groups ── */
.field {
  display: flex;
  flex-direction: column;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* LED row — three small inputs side by side */
.led-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
}

.led-field label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.led-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.led-dot.r { background: var(--led-r); box-shadow: 0 0 6px var(--led-r); }
.led-dot.g { background: var(--led-g); box-shadow: 0 0 6px var(--led-g); }
.led-dot.b { background: var(--led-b); box-shadow: 0 0 6px var(--led-b); }

.led-field input {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.05em;
}

/* Date row */
.date-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* ── Divider ── */
.form-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.25rem 0;
}

/* ── Submit button ── */
button[type="submit"] {
  margin-top: 0.25rem;
  height: 44px;
  padding: 0 2rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  align-self: flex-start;
}

button[type="submit"]:hover {
  background: var(--accent-hover);
}

button[type="submit"]:active {
  transform: scale(0.98);
}

/* ── Status message ── */
p {
  font-size: 13px;
  color: var(--danger);
  background: #fdf0ef;
  border: 1px solid #f5c6c3;
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  margin: 0 1.5rem 1rem;
}

/* ── Table ── */
.container:last-of-type {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  border: none !important;
}

table tr:first-child td {
  background: var(--surface-alt);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table tr:not(:first-child) td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12.5px;
  vertical-align: middle;
}

table tr:not(:first-child):last-child td {
  border-bottom: none;
}

table tr:not(:first-child):hover td {
  background: var(--surface-alt);
}

table tr:nth-child(even):not(:first-child) td {
  background: #faf9f7;
}

table tr:nth-child(even):not(:first-child):hover td {
  background: var(--surface-alt);
}

/* ── Responsive ── */
@media (max-width: 560px) {
  .field-row,
  .date-row {
    grid-template-columns: 1fr;
  }

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

  form {
    padding: 1.25rem 1rem;
  }
}