:root {
  --green: #2f9e44;
  --green-dark: #1f6b2c;
  --bg: #f4f7f2;
  --card-bg: #ffffff;
  --text: #1f2a1f;
  --muted: #6b7a6b;
  --danger: #d64545;
  --border: #e0e6dc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.login-body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.login-card h1 { margin: 0; text-align: center; }
.login-card .subtitle { text-align: center; color: var(--muted); margin: 0 0 1rem; }

.login-card label { font-size: 0.85rem; color: var(--muted); margin-top: 0.5rem; }
.login-card input {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

.login-card button {
  margin-top: 1rem;
  padding: 0.7rem;
  background: var(--green);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}
.login-card button:hover { background: var(--green-dark); }

.error { color: var(--danger); min-height: 1.2em; margin: 0.5rem 0 0; font-size: 0.9rem; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.topbar h1 { margin: 0; font-size: 1.3rem; }
.topbar-right { display: flex; align-items: center; gap: 1rem; }
.topbar-right span { color: var(--muted); font-size: 0.9rem; }

button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  color: var(--text);
}
button.ghost:hover { background: var(--bg); }

.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  padding: 1.5rem;
}

.device-card {
  background: var(--card-bg);
  border-radius: 14px;
  padding: 1.25rem;
  border: 1px solid var(--border);
}

.device-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.device-name { margin: 0; font-size: 1.1rem; }
.device-id { color: var(--muted); font-size: 0.8rem; margin: 0 0 0.75rem; }

.status-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--danger);
}
.status-dot.online { background: var(--green); }

.readings {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.reading-pill {
  background: var(--bg);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}
.reading-pill b { color: var(--green-dark); }

.actuators {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.actuator-btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  background: var(--bg);
  cursor: pointer;
  font-size: 0.9rem;
}
.actuator-btn.on {
  background: var(--green);
  color: white;
  border-color: var(--green-dark);
}

dialog {
  border-radius: 14px;
  border: none;
  padding: 1.5rem 2rem;
  width: 420px;
  max-width: 90vw;
}
dialog h2 { margin-top: 0; }
dialog section { margin-bottom: 1.5rem; }
dialog h3 { font-size: 0.95rem; color: var(--muted); margin-bottom: 0.5rem; }

.inline-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.inline-form input, .inline-form select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.inline-form button {
  background: var(--green);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
}

.token-box {
  background: #fff8e1;
  border: 1px solid #f0c96c;
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-all;
}