:root {
  --navy: #0b3557;
  --navy-deep: #07263f;
  --steel: #1c4a6e;
  --orange: #e67a00;
  --orange-press: #c86800;
  --ink: #102433;
  --muted: #5a6d7a;
  --line: #cfd8e0;
  --paper: #f3f6f8;
  --panel: #ffffff;
  --danger: #a32020;
  --danger-bg: #fdecec;
  --info-bg: #eef5fb;
  --ok: #1f6b4a;
  --shadow: 0 18px 40px rgba(7, 38, 63, 0.12);
  --radius: 14px;
  --font-display: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(230, 122, 0, 0.12), transparent 55%),
    linear-gradient(160deg, #e8eef3 0%, var(--paper) 42%, #dfe7ee 100%);
}

.shell {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.top {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.55rem;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--navy), var(--steel));
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-copy strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--navy);
}
.brand-copy small {
  color: var(--muted);
  font-size: 0.85rem;
}

.stage {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
  display: grid;
  align-content: start;
  justify-items: center;
}

.panel {
  width: min(440px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.4rem 1.35rem;
}
.panel.wide { width: min(720px, 100%); }

h1 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.5vw, 1.9rem);
  color: var(--navy);
  letter-spacing: -0.02em;
}
.sub { margin: 0 0 1.15rem; color: var(--muted); line-height: 1.45; }

label {
  display: block;
  margin: 0.85rem 0 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.85rem;
  font: inherit;
  background: #fbfcfd;
}
input:focus {
  outline: 2px solid rgba(11, 53, 87, 0.28);
  border-color: var(--navy);
  background: #fff;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-top: 1.15rem;
}

.btn {
  appearance: none;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font-weight: 700;
}
.btn.primary {
  background: linear-gradient(180deg, var(--orange), var(--orange-press));
  color: #111;
  min-width: 8.5rem;
}
.btn.primary:hover { filter: brightness(1.03); }
.btn.primary:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.link {
  color: var(--navy);
  font-weight: 600;
  padding-left: 0.2rem;
  padding-right: 0.2rem;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}
.btn.secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--navy);
}

.error {
  margin: 0.9rem 0 0;
  color: var(--danger);
  background: var(--danger-bg);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  font-size: 0.95rem;
}
.msg {
  margin: 0.9rem 0 0;
  color: var(--ok);
  background: #eaf7f0;
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
}
.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
  background: var(--info-bg);
  border-radius: 8px;
  padding: 0.7rem 0.8rem;
  border: 1px dashed var(--line);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.notice {
  border-radius: 10px;
  padding: 0.85rem 0.95rem;
  margin: 0.75rem 0 1rem;
  line-height: 1.45;
}
.notice.deny { background: var(--danger-bg); color: #6e1717; }
.notice.info { background: var(--info-bg); color: var(--navy-deep); }
.notice a { color: inherit; font-weight: 700; }

.plant-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.plant-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1rem;
  background: #fafcfd;
}
.plant-card h2 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--navy);
}
.plant-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}
.badge {
  display: inline-block;
  margin-top: 0.45rem;
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.badge.ready { background: #e5f6ee; color: var(--ok); }
.badge.warn { background: #fff3df; color: #8a5a00; }
.badge.offline { background: #eceff2; color: #445563; }
.plant-actions { margin-top: 0.75rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }

.foot {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 2rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.45rem;
}
.foot a {
  color: var(--navy);
  font-weight: 600;
  text-decoration: none;
}
.foot a:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .top, .stage, .foot { width: min(920px, calc(100% - 1.25rem)); }
  .panel { padding: 1.25rem 1.05rem 1.15rem; }
  .panel-head { flex-direction: column; }
  .actions { flex-direction: column; align-items: stretch; }
  .btn.primary, .btn.secondary { width: 100%; }
}