:root {
  --blue:   #1F4E79; --mid:    #2E75B6; --lblue:  #D6E4F0;
  --green:  #1F6B3A; --lgreen: #E8F5EE; --red:    #8B0000;
  --lred:   #FFEBEE; --amber:  #7F4F00; --lamber: #FFF8E1;
  --gray:   #F5F7FA; --border: #D1D9E0; --text:   #1A1A2E;
  --muted:  #6B7A8D; --white:  #FFFFFF;
  --shadow: 0 2px 12px rgba(31,78,121,0.10);
  --radius: 10px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', Arial, sans-serif; background: #EEF2F7; color: var(--text); min-height: 100vh; }

/* ── Nav ── */
.nav {
  background: var(--blue); padding: 0 32px; height: 58px;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18); position: sticky; top: 0; z-index: 100;
}
.nav-logo { color: #fff; font-size: 1.3rem; font-weight: 700; text-decoration: none; }
.nav-sub  { color: #AECBDF; font-size: 0.75rem; }
.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-user { color: #AECBDF; font-size: 0.82rem; }
.nav-logout { color: #AECBDF; font-size: 0.82rem; text-decoration: none; padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.2); border-radius: 6px; transition: all 0.2s; }
.nav-logout:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* ── Layout ── */
.main { max-width: 1000px; margin: 32px auto; padding: 0 16px; }
.main-wide { max-width: 1200px; margin: 32px auto; padding: 0 16px; }

/* ── Cards ── */
.card { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; margin-bottom: 20px; }
.card-title { font-size: 1.05rem; font-weight: 700; color: var(--blue); margin-bottom: 18px;
  padding-bottom: 12px; border-bottom: 2px solid var(--lblue); display: flex; align-items: center; gap: 8px; }

/* ── Page header ── */
.page-hdr { margin-bottom: 24px; }
.page-hdr h1 { font-size: 1.4rem; font-weight: 700; color: var(--blue); }
.page-hdr p  { color: var(--muted); font-size: 0.88rem; margin-top: 4px; }

/* ── Status badges ── */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 12px;
  border-radius: 20px; font-size: 0.75rem; font-weight: 700; }
.badge-pending  { background: var(--lamber); color: var(--amber); }
.badge-signed   { background: var(--lgreen); color: var(--green); }
.badge-expired  { background: var(--lred);   color: var(--red); }
.badge-active   { background: var(--lgreen); color: var(--green); }
.badge-fortify  { background: var(--lgreen); color: var(--green); }
.badge-protect  { background: var(--lblue);  color: var(--mid); }
.badge-elite    { background: #EDE7F6;        color: #4B1C82; }

/* ── Tables ── */
.tbl { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.tbl th { background: var(--blue); color: #fff; padding: 10px 14px; text-align: left;
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px; }
.tbl td { padding: 11px 14px; border-bottom: 1px solid var(--border); }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: var(--gray); }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-grid  { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid.three { grid-template-columns: 1fr 1fr 1fr; }
label { font-size: 0.8rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
input, select, textarea { border: 1.5px solid var(--border); border-radius: 7px; padding: 10px 13px;
  font-size: 0.93rem; font-family: inherit; color: var(--text); background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--mid);
  box-shadow: 0 0 0 3px rgba(46,117,182,0.12); }
.form-hint { font-size: 0.76rem; color: var(--muted); }

/* ── Buttons ── */
.btn { padding: 10px 24px; border-radius: 8px; font-size: 0.9rem; font-weight: 700;
  border: none; cursor: pointer; font-family: inherit; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 6px; text-decoration: none; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #163A5F; transform: translateY(-1px); }
.btn-success { background: var(--green); color: #fff; }
.btn-success:hover { background: #155228; transform: translateY(-1px); }
.btn-secondary { background: var(--gray); color: var(--text); border: 1.5px solid var(--border); }
.btn-secondary:hover { background: #E2E8F0; }
.btn-danger { background: var(--red); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* ── Alerts ── */
.alert { padding: 12px 16px; border-radius: 7px; font-size: 0.87rem; margin-bottom: 16px;
  display: flex; align-items: flex-start; gap: 10px; }
.alert-error   { background: var(--lred);   color: var(--red);   border-left: 4px solid var(--red); }
.alert-success { background: var(--lgreen); color: var(--green); border-left: 4px solid var(--green); }
.alert-info    { background: var(--lblue);  color: var(--blue);  border-left: 4px solid var(--mid); }
.alert-warn    { background: var(--lamber); color: var(--amber); border-left: 4px solid #D4A017; }

/* ── Stats row ── */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--white); border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow); border-left: 4px solid var(--mid); }
.stat-val   { font-size: 2rem; font-weight: 800; color: var(--blue); }
.stat-label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }

/* ── Signature canvas ── */
.sig-wrap { border: 2px solid var(--border); border-radius: 8px; background: #FAFBFC;
  overflow: hidden; position: relative; }
.sig-wrap canvas { display: block; cursor: crosshair; touch-action: none; }
.sig-label { position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%);
  font-size: 0.72rem; color: var(--border); pointer-events: none; user-select: none; }

/* ── MSA viewer ── */
.msa-viewer { border: 1px solid var(--border); border-radius: 8px; background: var(--white);
  height: 500px; overflow-y: auto; padding: 24px 28px; font-size: 0.88rem; line-height: 1.65;
  color: var(--text); }
.msa-viewer h2 { color: var(--blue); font-size: 1.05rem; margin: 20px 0 8px; }
.msa-viewer h3 { color: var(--mid); font-size: 0.95rem; margin: 14px 0 6px; }
.msa-viewer p  { margin-bottom: 10px; }
.msa-viewer table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 0.82rem; }
.msa-viewer th { background: var(--blue); color: #fff; padding: 7px 10px; }
.msa-viewer td { padding: 7px 10px; border: 1px solid var(--border); }
.msa-viewer tr:nth-child(even) td { background: var(--gray); }

/* ── Responsive ── */
@media (max-width: 700px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .form-grid, .form-grid.three { grid-template-columns: 1fr; }
  .nav { padding: 0 16px; }
  .main, .main-wide { padding: 0 10px; }
}