:root {
  --brand: #65972b;
  --brand-dark: #4a7020;
  --accent: #d9a93a;
  --bg: #f3f5f8;
  --card: #ffffff;
  --text: #1d2733;
  --muted: #5b6776;
  --line: #d5dbe3;
  --ok: #1f7a4d;
  --warn-bg: #fff6d6;
  --warn: #7a5b00;
  --err-bg: #fde8e8;
  --err: #9b1c1c;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; flex-direction: column; }
header { background: #fff; color: var(--brand-dark); border-bottom: 6px solid var(--brand); box-shadow: 0 3px 0 var(--accent); }
.bar { max-width: 760px; margin: 0 auto; padding: 18px 16px; display: flex; align-items: center; gap: 14px; }
.bar img { height: 52px; width: auto; flex: none; }
.bar img + div { padding-left: 16px; border-left: 2px solid var(--line); }
.org { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.bar h1 { margin: 0; font-size: 1.2rem; font-weight: 600; color: var(--brand-dark); }
main { flex: 1; width: 100%; max-width: 760px; margin: 0 auto; padding: 28px 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }
.card h2 { margin: 0 0 6px; font-size: 1.1rem; color: var(--brand-dark); }
.card p { margin: 0 0 18px; color: var(--muted); line-height: 1.5; }
.drop { display: block; border: 2px dashed var(--line); border-radius: 8px; padding: 28px 16px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s; }
.drop:hover, .drop.over { border-color: var(--brand-dark); background: #f4f9ec; }
.drop strong { color: var(--brand-dark); }
.drop small { display: block; margin-top: 6px; color: var(--muted); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:focus-within { outline: 3px solid var(--accent); outline-offset: 2px; }
#fname { margin-top: 10px; font-weight: 600; word-break: break-all; }
button { margin-top: 18px; width: 100%; padding: 13px; font-size: 1rem; font-weight: 600; color: #fff; background: var(--brand-dark); border: 0; border-radius: 8px; cursor: pointer; }
button:hover:not(:disabled) { background: #3b5a19; }
button:disabled { opacity: .5; cursor: not-allowed; }
.msg { margin-top: 16px; padding: 12px 14px; border-radius: 8px; font-size: .95rem; line-height: 1.45; }
.err { background: var(--err-bg); color: var(--err); }
.warn { background: var(--warn-bg); color: var(--warn); }
.ok { background: #e6f4ec; color: var(--ok); }
.notes { margin: 20px 0 0; padding-left: 18px; color: var(--muted); font-size: .9rem; line-height: 1.6; }
footer { text-align: center; padding: 18px; color: var(--muted); font-size: .8rem; }
[hidden] { display: none !important; }
/* login + sesión */
.bar .spacer { flex: 1; }
.logout { margin: 0; }
.logout button { margin: 0; width: auto; padding: 8px 14px; font-size: .85rem; background: transparent; color: var(--brand-dark); border: 1px solid var(--line); }
.logout button:hover:not(:disabled) { background: #f4f9ec; }
.login { max-width: 400px; margin: 0 auto; }
.login label.f { display: block; margin-bottom: 14px; font-size: .9rem; font-weight: 600; color: var(--text); }
.login input[type=text], .login input[type=password] { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; font-size: 1rem; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--text); }
.login input:focus { outline: 3px solid var(--accent); outline-offset: 1px; border-color: var(--brand-dark); }