* { box-sizing: border-box; }

:root {
  --navy: #1e3a5f;
  --navy-dark: #0d1b2a;
  --accent: #2f80ed;
  --danger: #d64545;
  --success: #2e9e5b;
  --warning: #d69e2e;
  --bg: #f2f4f8;
  --card: #ffffff;
  --border: #e0e4ea;
  --text: #1c2330;
  --text-dim: #66707f;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
}

.hidden { display: none !important; }

code {
  background: #eef1f5;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ---------- Login ---------- */

.login-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  padding: 20px;
}

.login-card {
  background: var(--card);
  border-radius: 16px;
  padding: 40px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-card h1 {
  text-align: center;
  color: var(--navy);
  margin: 0 0 8px 0;
  font-size: 24px;
}

.logo { text-align: center; margin-bottom: 24px; }
.logo img { width: 72px; height: 72px; }

.subtitle {
  text-align: center;
  color: var(--text-dim);
  margin-bottom: 28px;
  font-size: 14px;
  line-height: 1.5;
}

.form-group { margin-bottom: 18px; }

label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  font-size: 14px;
}

input[type="text"], input[type="email"], input[type="password"], input[type="date"], select {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  transition: border-color 0.2s;
  background: #fff;
  color: var(--text);
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ---------- Buttons ---------- */

.btn {
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
  white-space: nowrap;
}
.btn:hover { opacity: 0.88; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--navy); color: #fff; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-ghost   { background: transparent; color: inherit; border: 1px solid var(--border); }
.btn-small   { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.btn-block   { width: 100%; }

.btn-oauth {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  margin-bottom: 12px;
}
.btn-apple  { background: #000; color: #fff; }
.btn-google { background: #fff; color: var(--text); border: 2px solid var(--border); }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--text-dim);
  font-size: 13px;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.portal-instructions {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
  margin: 16px 0 20px;
}

/* ---------- Topbar ---------- */

.topbar {
  background: var(--navy-dark);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 20px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
}
.topbar-brand img { width: 28px; height: 28px; }

.topbar-search {
  flex: 1;
  display: flex;
  gap: 8px;
  min-width: 280px;
  max-width: 560px;
}
.topbar-search input {
  border: none;
  padding: 10px 14px;
  font-size: 14px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: #c6cede;
}
.topbar-user .btn-ghost { color: #c6cede; border-color: #3a4a60; }

/* ---------- Layout ---------- */

#main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.panel h2 { margin: 0 0 16px; font-size: 20px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.card h3 {
  margin: 0 0 14px;
  font-size: 16px;
  color: var(--navy);
}

.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.card-header-row h3 { margin: 0; }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  align-items: start;
}
.grid-2 .card { margin-bottom: 0; }

/* ---------- Key/value lists ---------- */

.kv {
  display: grid;
  grid-template-columns: minmax(140px, auto) 1fr;
  gap: 6px 16px;
  font-size: 14px;
}
.kv dt { color: var(--text-dim); margin: 0; }
.kv dd { margin: 0; word-break: break-word; }

/* ---------- Tables ---------- */

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
th {
  color: var(--text-dim);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
tbody tr:hover { background: #f7f9fc; }
tr.clickable { cursor: pointer; }

/* ---------- Badges ---------- */

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-green  { background: #e3f5ea; color: var(--success); }
.badge-red    { background: #fbe7e7; color: var(--danger); }
.badge-yellow { background: #faf0d9; color: #9c751a; }
.badge-gray   { background: #edf0f4; color: var(--text-dim); }
.badge-blue   { background: #e5effc; color: var(--accent); }

/* ---------- Misc ---------- */

.error-box {
  background: #fbe7e7;
  color: var(--danger);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 14px;
}

.info-box {
  background: #e5effc;
  color: var(--navy);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 14px;
}

.breadcrumb {
  font-size: 13px;
  margin-bottom: 14px;
  color: var(--text-dim);
}
.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
}
.breadcrumb a:hover { text-decoration: underline; }

.muted { color: var(--text-dim); }

.loading {
  text-align: center;
  color: var(--text-dim);
  padding: 40px 0;
}

.filters-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 14px;
}
.filters-row .form-group { margin-bottom: 0; }
.filters-row input, .filters-row select {
  padding: 8px 10px;
  font-size: 13px;
  border-radius: 8px;
  border-width: 1px;
}

.pager {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

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

.device-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.device-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: box-shadow 0.15s, border-color 0.15s;
  background: #fff;
}
.device-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.07);
}
.device-card .device-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
}
.device-card .device-name { font-size: 14px; margin: 4px 0 10px; }
.device-card .device-meta { font-size: 12px; color: var(--text-dim); line-height: 1.6; }

.actions-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

#global-message {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--navy-dark);
  color: #fff;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  z-index: 100;
}
#global-message.msg-error { background: var(--danger); }