:root {
  --page: #e6e9ee;
  --panel: #ffffff;
  --panel-alt: #f4f6f9;
  --line: #d3d9e2;
  --ink: #1f2a3a;
  --muted: #5a6577;
  --policy: #2e7d4f;
  --fail: #b3261e;
  --fail-bg: #fbeceb;
  --pass: #2e7d4f;
  --warn: #8a5a00;
  --warn-bg: #fff6e6;
  --font: "Public Sans", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 400 1rem/1.55 var(--font);
}

.mobile-warning { display: none; }

@media (max-width: 820px) {
  .mobile-warning {
    display: block;
    margin: 0;
    padding: 0.8rem 1rem;
    background: var(--warn-bg, #fff6e6);
    border-bottom: 3px solid #8a5a00;
    color: #8a5a00;
    font-size: 0.95rem;
    line-height: 1.4;
  }
}

.portal-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  padding: 0.6rem 1.25rem;
  background: var(--policy);
  color: #fff;
  font-size: 0.9rem;
}
.portal-name { font-weight: 800; }
.note { opacity: 0.85; }

.page {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 {
  font-size: clamp(2rem, 6vw, 2.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}
.lede { color: var(--muted); margin: 0 0 1.5rem; max-width: 40rem; }

/* Tabs */
.tabs { display: flex; gap: 0.3rem; border-bottom: 2px solid var(--line); margin-bottom: 1.25rem; }
.tab {
  font: 600 1rem var(--font);
  padding: 0.6rem 1.1rem;
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}
.tab.active { color: var(--policy); border-bottom-color: var(--policy); }
.tab:focus-visible { outline: 3px solid var(--policy); outline-offset: 2px; }

/* Panel */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.25rem 1.4rem 1.5rem;
}
.panel h2 { margin: 0 0 0.3rem; font-size: 1.5rem; }
.help { margin: 0 0 1.25rem; color: var(--muted); }

.field { display: grid; gap: 0.4rem; font-weight: 600; margin-bottom: 1.25rem; }
.field input[type=file],
.field textarea {
  font: 400 1rem var(--font);
  padding: 0.55rem 0.65rem;
  border: 2px solid #9aa5b5;
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
}
.field input[type=file] { padding: 0.5rem; cursor: pointer; }
.field textarea { resize: vertical; min-height: 3.5rem; }
.field input:focus, .field textarea:focus {
  outline: 3px solid var(--policy);
  outline-offset: 1px;
  border-color: var(--policy);
}

.counter { font-weight: 400; font-size: 0.85rem; color: var(--muted); }
.counter.over { color: var(--fail); font-weight: 600; }

.preview-wrap { margin: 0 0 1.25rem; }
.preview {
  display: block;
  max-width: 100%;
  max-height: 20rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background:
    linear-gradient(45deg, #eceff3 25%, transparent 25%, transparent 75%, #eceff3 75%) 0 0/20px 20px,
    linear-gradient(45deg, #eceff3 25%, #fff 25%, #fff 75%, #eceff3 75%) 10px 10px/20px 20px;
}
.capacity { margin: 0.5rem 0 0; font-size: 0.9rem; color: var(--muted); }

.btn {
  font: 600 1rem var(--font);
  padding: 0.6rem 1.2rem;
  border: 0;
  border-radius: 3px;
  background: var(--policy);
  color: #fff;
  cursor: pointer;
}
.btn.secondary { background: #e3ecf8; color: var(--policy); }
.btn:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.btn:disabled { opacity: 0.5; cursor: default; }

.error { color: var(--fail); font-weight: 600; min-height: 1.2em; margin: 0.75rem 0 0; }
.status { margin: 0.75rem 0 0; min-height: 1.2em; }
.status.bad { color: var(--fail); font-weight: 600; }
.status.good { color: var(--pass); font-weight: 600; }
.hint { font-size: 0.85rem; color: var(--muted); margin-left: 0.5rem; }

.result { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.result h3 { margin: 0 0 0.75rem; font-size: 1.15rem; }
.result textarea {
  width: 100%;
  font: 400 1rem var(--font);
  padding: 0.6rem 0.7rem;
  border: 2px solid var(--line);
  border-radius: 3px;
  background: var(--panel-alt);
  resize: vertical;
  margin-bottom: 0.75rem;
}

.warn {
  margin: 0 0 1rem;
  padding: 0.7rem 0.9rem;
  background: var(--warn-bg);
  border-left: 5px solid var(--warn);
  color: var(--warn);
  font-size: 0.92rem;
}

.footer-note {
  margin: 1.5rem 0 0;
  padding: 0.9rem 1rem;
  background: var(--panel-alt);
  border: 1px dashed #9aa5b5;
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 1.25rem;
  text-align: center;
  border-top: 1px solid var(--line, #d3d9e2);
  font-size: 0.9rem;
}
.site-footer a {
  color: var(--policy, #2b5c9e);
  font-weight: 600;
  text-decoration: none;
}
.site-footer a:hover { text-decoration: underline; }
.footer-sub {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted, #5a6577);
  font-size: 0.82rem;
}