/* ==========================================================================
   Air Quality Monitoring — stylesheet
   Tokens follow the Industry design system; corners are rounded (no
   registration marks) per project direction.
   ========================================================================== */

:root {
  --color-bg: #f2f2f3;
  --color-surface: #ffffff;
  --color-panel: #e9e9ea;
  --color-text: #1d1f20;
  --color-accent: #5980a6;
  --color-divider: rgba(29, 31, 32, .14);

  --color-neutral-100: #f5f5f8;
  --color-neutral-200: #e7e7ea;
  --color-neutral-300: #d4d4d7;
  --color-neutral-500: #98989b;
  --color-neutral-600: #7a7a7d;
  --color-neutral-700: #5d5d60;
  --color-neutral-900: #2b2b2d;

  --color-accent-100: #eef6ff;
  --color-accent-200: #d6ebff;
  --color-accent-600: #597ea3;
  --color-accent-700: #416180;
  --color-accent-900: #1d2d3d;

  --font-heading: "Prompt", system-ui, sans-serif;
  --font-body: "Prompt", system-ui, sans-serif;
  --font-num: "Prompt", system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 3px rgba(43, 43, 45, .10);
  --shadow-md: 0 4px 14px rgba(43, 43, 45, .12);
  --shadow-lg: 0 14px 36px rgba(43, 43, 45, .20);
}

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.1;
  margin: 0;
}

a { color: var(--color-accent-700); text-decoration: none; }
a:hover { color: var(--color-accent-900); }

::selection { background: var(--color-accent-200); }

:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; }
.kicker { font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--color-accent); }
.micro { font-size: 10px; letter-spacing: .15em; text-transform: uppercase; color: var(--color-neutral-600); }
.muted { color: var(--color-neutral-700); }
.vsep { width: 1px; height: 20px; background: var(--color-divider); }

/* ---------- Panel (rounded card) ---------- */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.panel-pad { padding: 20px; }
.panel-head {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  margin-bottom: 16px;
}
.panel-head h3 {
  font-size: 18px; text-transform: uppercase; letter-spacing: .06em;
}

/* ---------- Buttons ---------- */
.btn {
  --bs-btn-border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  padding: 9px 18px;
  border: 1px solid transparent;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.btn-primary:hover, .btn-primary:focus { background: var(--color-accent-600); border-color: var(--color-accent-600); color: #fff; }
.btn-primary:active { background: var(--color-accent-700); border-color: var(--color-accent-700); }
.btn-secondary { background: transparent; border-color: var(--color-divider); color: var(--color-text); }
.btn-secondary:hover, .btn-secondary:focus { background: var(--color-accent-100); border-color: var(--color-accent); color: var(--color-accent-700); }
.btn-ghost {
  background: transparent; border-color: transparent; color: var(--color-accent-700);
  letter-spacing: .04em; text-transform: none; font-family: var(--font-body);
  font-size: 13px; padding: 5px 10px; border-radius: var(--radius-sm);
}
.btn-ghost:hover { background: var(--color-accent-100); color: var(--color-accent-900); }
.btn-ghost.danger { color: var(--color-neutral-700); }
.btn-ghost.danger:hover { background: var(--color-neutral-200); color: var(--color-neutral-900); }
.btn-line {
  background: transparent; border: 1px solid rgba(255, 255, 255, .42); color: #fff;
  font-size: 11px; padding: 6px 14px;
}
.btn-line:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.btn:disabled, .btn.disabled { opacity: .45; }
.btn-sm { font-size: 12px; padding: 6px 12px; }

/* ---------- Tags ---------- */
.tag {
  display: inline-flex; align-items: center;
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  font-family: var(--font-heading);
  padding: 3px 10px; border-radius: var(--radius-pill);
  border: 1px solid transparent; white-space: nowrap;
}
.tag-accent { background: var(--color-accent-200); color: var(--color-accent-900); }
.tag-neutral { background: var(--color-neutral-200); color: var(--color-neutral-900); }
.tag-outline { background: transparent; border-color: var(--color-divider); color: var(--color-neutral-700); }

/* ---------- Form fields ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.field > label {
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--color-neutral-700);
}
.form-control, .form-select {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 8px 12px;
  min-height: 38px;
  box-shadow: none;
}
.form-control:focus, .form-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-100);
}
.form-control::placeholder { color: var(--color-neutral-500); }
.form-check-input:checked { background-color: var(--color-accent); border-color: var(--color-accent); }
input[type="datetime-local"]::-webkit-calendar-picker-indicator,
input[type="date"]::-webkit-calendar-picker-indicator { opacity: .5; cursor: pointer; }

/* ---------- Login ---------- */
.login { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); }
.login-brand {
  position: relative; overflow: hidden;
  background: var(--color-accent-900); color: var(--color-bg);
  padding: 56px 56px 40px;
  display: flex; flex-direction: column; justify-content: space-between; gap: 40px;
}
.login-brand::before {
  content: ""; position: absolute; inset: 0; opacity: .13;
  background-image:
    linear-gradient(to right, #fff 1px, transparent 1px),
    linear-gradient(to bottom, #fff 1px, transparent 1px);
  background-size: 44px 44px;
}
.login-brand > * { position: relative; }
.login-title { font-size: 56px; text-transform: uppercase; margin-bottom: 18px; }
.login-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px;
}
.login-stat {
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}
.login-stat .micro { color: rgba(255, 255, 255, .6); }
.login-right { display: grid; place-items: center; padding: 48px 40px; }
.login-card { width: 100%; max-width: 404px; padding: 36px 32px 30px; }

/* ---------- Brand mark ---------- */
.mark {
  display: grid; place-items: center;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: var(--radius-sm);
  width: 34px; height: 34px;
}
.mark > span { width: 12px; height: 12px; border-radius: 3px; background: var(--color-bg); display: block; }
.mark.sm { width: 26px; height: 26px; }
.mark.sm > span { width: 9px; height: 9px; }
.wordmark {
  font-family: var(--font-heading); letter-spacing: .15em; text-transform: uppercase;
  font-size: 18px; line-height: 1;
}
.wordmark.sm { font-size: 15px; }

/* ---------- App chrome ---------- */
.topbar { background: var(--color-accent-900); color: var(--color-bg); }
.topbar-inner {
  max-width: 1560px; margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; gap: 24px; height: 60px;
}
.topbar .vsep { background: rgba(255, 255, 255, .25); }
.topbar-sub { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; opacity: .72; }
.avatar {
  width: 34px; height: 34px; border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, .45);
  display: grid; place-items: center; font-size: 12px; letter-spacing: .05em;
}

.tabbar { background: var(--color-surface); border-bottom: 1px solid var(--color-divider); }
.tabbar-inner {
  max-width: 1560px; margin: 0 auto; padding: 0 28px;
  display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none;
}
.tabbar-inner::-webkit-scrollbar { display: none; }
.tab {
  position: relative; border: 0; background: transparent; color: var(--color-text);
  font-family: var(--font-heading); font-size: 14px; letter-spacing: .11em; text-transform: uppercase;
  padding: 15px 20px 14px; border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  white-space: nowrap; cursor: pointer;
}
.tab:hover { background: var(--color-accent-100); }
.tab.active::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 0;
  height: 3px; border-radius: var(--radius-pill); background: var(--color-accent);
}

.page-wrap { max-width: 1560px; margin: 0 auto; padding: 28px 28px 72px; }
.page-head {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 20px; margin-bottom: 26px;
}
.page-head h2 { font-size: 34px; text-transform: uppercase; }

/* ---------- Live data ---------- */
.statusbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 26px;
  padding: 14px 20px; margin-bottom: 26px;
}
.metric-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-bottom: 26px;
}
.metric { padding: 18px 18px 14px; display: flex; flex-direction: column; gap: 12px; }
.metric:hover { box-shadow: var(--shadow-md); }
.metric-name { font-family: var(--font-heading); font-size: 19px; letter-spacing: .04em; }
.metric-value { font-size: 42px; line-height: .92; }
.metric-foot {
  display: flex; justify-content: space-between;
  border-top: 1px solid var(--color-divider); padding-top: 9px;
}
.spark { width: 100%; height: 34px; display: block; }

.meteo-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px;
}
.meteo {
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  padding: 12px 14px; background: var(--color-neutral-100);
}
.meteo-value { font-size: 28px; line-height: 1; }

/* ---------- Tables ---------- */
.table-scroll { overflow-x: auto; border-radius: var(--radius-md); }
table.data { width: 100%; border-collapse: separate; border-spacing: 0; }
table.data th, table.data td { white-space: nowrap; padding: 10px 14px; }
table.data thead th {
  font-family: var(--font-heading); font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--color-neutral-700); background: var(--color-neutral-100);
  border-bottom: 1px solid var(--color-divider); text-align: left;
}
table.data thead tr:first-child th:first-child { border-top-left-radius: var(--radius-md); }
table.data thead tr:first-child th:last-child { border-top-right-radius: var(--radius-md); }
table.data thead th.unit {
  font-family: var(--font-body); font-size: 10px; letter-spacing: 0; text-transform: none;
  padding-top: 0; padding-bottom: 8px;
}
table.data tbody td { border-bottom: 1px solid var(--color-divider); font-size: 14px; }
table.data tbody tr:hover td { background: var(--color-accent-100); }
table.data .sticky { position: sticky; left: 0; background: var(--color-surface); }
table.data thead .sticky { background: var(--color-neutral-100); }
table.data tbody tr:hover .sticky { background: var(--color-accent-100); }
table.data .r { text-align: right; }

/* ---------- Historical ---------- */
.filter-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px; align-items: end;
}
.stat-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.stat { padding: 16px 18px; }
.stat-value { font-size: 32px; line-height: 1; }
.chart-row { display: flex; gap: 10px; }
.chart-y {
  display: flex; flex-direction: column; justify-content: space-between;
  height: 250px; padding-bottom: 22px; text-align: right;
  font-size: 11px; color: var(--color-neutral-600);
}
.chart-box { flex: 1; min-width: 0; }
.chart {
  width: 100%; height: 232px; display: block;
  border-left: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.chart-x {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--color-neutral-600); padding-top: 6px;
}

/* ---------- Bootstrap modal skin ---------- */
.modal-content {
  border: 1px solid var(--color-divider); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); background: var(--color-bg);
}
.modal-header { border-bottom: 0; padding: 26px 26px 0; display: block; }
.modal-header h3 { font-size: 26px; text-transform: uppercase; margin-top: 6px; }
.modal-body { padding: 22px 26px 6px; }
.modal-footer { border-top: 1px solid var(--color-divider); padding: 16px 26px 20px; gap: 10px; }

/* ---------- Busy lock ---------- */
#busy-lock {
  position: fixed; inset: 0; z-index: 2000; display: none; cursor: progress;
  background: rgba(242, 242, 243, .3);
}
body.is-busy #busy-lock { display: block; }

/* ---------- SweetAlert2 skin ---------- */
.swal2-popup {
  border-radius: var(--radius-lg) !important;
  border: 1px solid var(--color-divider);
  background: var(--color-bg);
  font-family: var(--font-body);
  box-shadow: var(--shadow-lg);
  padding: 26px 24px 20px;
}
.swal2-title {
  font-family: var(--font-heading) !important; text-transform: uppercase;
  letter-spacing: .04em; color: var(--color-text); font-size: 24px !important;
}
.swal2-html-container { font-size: 14px !important; color: var(--color-neutral-700); }
.swal2-styled {
  border-radius: var(--radius-sm) !important; box-shadow: none !important;
  font-family: var(--font-heading); letter-spacing: .1em; text-transform: uppercase;
  font-size: 13px !important; padding: 9px 20px !important;
}
.swal2-styled.swal2-confirm { background: var(--color-accent) !important; color: #fff !important; }
.swal2-styled.swal2-confirm:hover { background: var(--color-accent-600) !important; }
.swal2-styled.swal2-cancel {
  background: transparent !important; color: var(--color-text) !important;
  border: 1px solid var(--color-divider) !important;
}
.swal2-loader { border-color: var(--color-accent) transparent var(--color-accent) transparent !important; }
.swal2-container { backdrop-filter: blur(1px); }

.progress-line {
  margin-top: 16px; height: 4px; border-radius: var(--radius-pill);
  background: var(--color-accent-100); overflow: hidden;
}
.progress-line > i {
  display: block; width: 34%; height: 100%; border-radius: var(--radius-pill);
  background: var(--color-accent); animation: aq-bar 1.1s linear infinite;
}
@keyframes aq-bar { 0% { transform: translateX(-110%); } 100% { transform: translateX(320%); } }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .login { grid-template-columns: minmax(0, 1fr); }
  .login-brand { padding: 34px 26px 30px; gap: 32px; }
  .login-title { font-size: 40px; }
  .login-right { padding: 34px 22px 56px; }
  .page-head h2, .login-card h2 { font-size: 26px; }
  .topbar-inner, .tabbar-inner, .page-wrap { padding-left: 18px; padding-right: 18px; }
}
@media (max-width: 720px) {
  .topbar-inner { height: auto; flex-wrap: wrap; gap: 12px; padding: 12px 18px; }
  .topbar .vsep, .topbar-sub { display: none; }
  .login-title { font-size: 32px; }
  .login-stats { grid-template-columns: minmax(0, 1fr); }
  .statusbar { gap: 14px; }
  .statusbar .vsep { display: none; }
  .chart-y { display: none; }
}

/* tabs and brand rendered as links */
.tab { display: inline-flex; align-items: center; text-decoration: none; color: var(--color-text); }
.tab:hover { color: var(--color-text); }
.topbar a { text-decoration: none; color: inherit; }

/* company logo — original colours, on a white plate over the steel fields */
.logo-plate {
  display: inline-flex; align-items: center;
  background: #fff; border-radius: var(--radius-md);
  padding: 8px 14px;
}
.logo-plate.sm { padding: 5px 10px; border-radius: var(--radius-sm); }
.logo { display: block; height: 44px; width: auto; }
.logo.sm { height: 26px; }
@media (max-width: 720px) { .logo { height: 36px; } .logo.sm { height: 22px; } }


/* ---- additions for the live backend ---- */
button.avatar { border: 0; cursor: pointer; padding: 0; }
button.avatar:hover { filter: brightness(1.1); }
body:not(.is-admin) .admin-only { display: none !important; }
.tag-ok { background: #dff3e4; color: #1d5b2f; }
.tag-warn { background: #fde9cf; color: #7a4508; }
.metric-value.na, .meteo-value.na { color: var(--color-neutral-500); }
.chart-empty { fill: var(--color-neutral-500); font-size: 14px; }
.key-reveal { word-break: break-all; padding: 10px 12px; margin-top: 10px; border-radius: 8px; background: var(--color-neutral-100); border: 1px solid var(--color-divider); user-select: all; }