:root {
  color-scheme: light;
  --bg: #f5f7f4;
  --ink: #17211b;
  --muted: #667267;
  --line: #dce3da;
  --panel: #ffffff;
  --green: #1f7a4d;
  --green-dark: #135c39;
  --amber: #b76e00;
  --red: #b43b3b;
  --blue: #2f5f98;
  --shadow: 0 18px 50px rgba(23, 33, 27, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}
a { color: inherit; }
button, input { font: inherit; }

.center-shell, .tenant-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel, .tenant-card, .panel, .summary-grid article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.login-panel {
  width: min(430px, 100%);
  padding: 28px;
  display: grid;
  gap: 18px;
}

.login-panel h1, .tenant-head h1, .topbar h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.login-panel p { color: var(--muted); margin: 0; line-height: 1.5; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--green);
  color: white;
  font-weight: 800;
}

label {
  display: grid;
  gap: 7px;
  font-size: 0.95rem;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 13px;
  color: var(--ink);
  background: white;
}

.button {
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  padding: 11px 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.button:disabled { opacity: 0.55; cursor: wait; }
.primary { background: var(--green); color: white; }
.primary:hover { background: var(--green-dark); }
.secondary { background: #e6f1ea; color: var(--green-dark); }
.ghost { background: white; color: var(--ink); border: 1px solid var(--line); }
.wide { width: 100%; }
.error { color: var(--red) !important; }

.admin-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 250px 1fr;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: #17211b;
  color: white;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand-row { display: flex; gap: 12px; align-items: center; }
.brand-row span { display: block; color: #b9c6bb; font-size: 0.9rem; }
.sidebar nav { display: grid; gap: 8px; }
.sidebar a, .link-button {
  color: #eaf1ec;
  text-decoration: none;
  background: transparent;
  border: 0;
  text-align: left;
  padding: 10px 0;
  cursor: pointer;
}
.link-button { margin-top: auto; }

.workspace {
  padding: 28px;
  display: grid;
  gap: 24px;
  align-content: start;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.button.danger {
  border-color: #e5c4be;
  color: #8f2d21;
  background: #fff8f6;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--green);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.summary-grid article {
  padding: 18px;
  box-shadow: none;
}
.summary-grid span, .panel-head span, .period-main span, .outbox span {
  color: var(--muted);
  font-size: 0.9rem;
}
.summary-grid strong {
  display: block;
  font-size: 1.6rem;
  margin: 8px 0 4px;
}
.summary-grid small { color: var(--muted); }

.panel {
  box-shadow: none;
  padding: 20px;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
}
.panel h2 { margin: 0; font-size: 1.2rem; }

.period-list { display: grid; gap: 14px; }
.period-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  display: grid;
  gap: 14px;
}
.period-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.period-main strong { display: block; font-size: 1.2rem; }
.period-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}
.period-actions .button {
  min-height: 36px;
  padding: 8px 10px;
}
mark {
  border-radius: 999px;
  padding: 6px 10px;
  background: #e6f1ea;
  color: var(--green-dark);
  font-weight: 800;
}
.overdue mark { background: #fde8e8; color: var(--red); }
.pending mark { background: #fff2d9; color: var(--amber); }

.readings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.reading-chip {
  min-height: 150px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  display: grid;
  gap: 8px;
  align-content: start;
}
.reading-chip span { font-weight: 800; }
.reading-chip img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}
.reading-chip em { color: var(--muted); font-style: normal; }
.ocr-form {
  display: grid;
  gap: 8px;
}
.ocr-form label {
  color: var(--muted);
  font-size: 0.86rem;
}
.ocr-form input {
  padding: 9px 10px;
  font-size: 0.95rem;
}
.ocr-form small {
  color: var(--red);
  line-height: 1.35;
}
.ocr-form .button {
  min-height: 38px;
  padding: 8px 10px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.meters-editor {
  grid-column: 1 / -1;
  display: grid;
  gap: 10px;
}
.meters-editor > span { color: var(--muted); }
#meters-list { display: grid; gap: 10px; }
.meter-row {
  display: grid;
  grid-template-columns: 1fr 110px;
  gap: 10px;
  align-items: center;
}
.check {
  display: flex;
  align-items: center;
  gap: 8px;
}
.check input { width: auto; }

.outbox { display: grid; gap: 10px; }
.outbox article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  gap: 4px;
}
.outbox a {
  color: var(--blue);
  overflow-wrap: anywhere;
}

.tenant-card {
  width: min(620px, 100%);
  padding: 18px;
}
.tenant-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.tenant-head span {
  flex: 0 0 auto;
  background: #e6f1ea;
  color: var(--green-dark);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 800;
}
.camera-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background: #101815;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.camera-wrap video, .camera-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.camera-wrap video {
  transform-origin: center;
}
.camera-wrap img {
  position: absolute;
  inset: 0;
}
.zoom-control {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.zoom-control label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.92rem;
}
.zoom-control strong { color: var(--ink); }
.zoom-control input {
  accent-color: var(--green);
  padding: 0;
}
#camera-note {
  color: var(--muted);
  line-height: 1.5;
  margin: 14px 0;
}
.photo-actions {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}
.photo-actions-initial {
  grid-template-columns: 1fr 1fr;
}
.photo-actions-confirm {
  grid-template-columns: 1fr;
}
.success-box, .intro-box {
  border: 1px solid #cfe7d8;
  background: #eff8f2;
  border-radius: 8px;
  padding: 16px;
}
.success-box p, .intro-box p { margin-bottom: 0; color: var(--muted); }
.meter-pick-list {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}
.meter-pick {
  width: 100%;
  border: 1px solid var(--line);
  background: white;
  border-radius: 8px;
  padding: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  text-align: left;
}
.meter-pick span { font-weight: 800; }
.meter-pick strong {
  color: var(--amber);
  font-size: 0.9rem;
}
.meter-pick.done {
  background: #f8fbf9;
  border-color: #cfe7d8;
}
.meter-pick.done strong { color: var(--green-dark); }
.done-list { display: grid; gap: 10px; margin-top: 16px; }
.done-list span {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.loading { color: var(--muted); }

@media (max-width: 860px) {
  .admin-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
  }
  .sidebar nav { display: flex; gap: 14px; }
  .link-button { margin-left: auto; margin-top: 0; }
  .topbar { align-items: stretch; flex-direction: column; }
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .settings-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .center-shell, .tenant-shell { padding: 12px; place-items: stretch; }
  .tenant-card, .login-panel { padding: 16px; }
  .workspace { padding: 16px; }
  .summary-grid, .photo-actions-initial, .meter-row { grid-template-columns: 1fr; }
  .panel-head, .period-main { align-items: start; flex-direction: column; }
  .period-actions { justify-content: flex-start; }
  .camera-wrap { aspect-ratio: 1 / 1; }
}