/* Study & Go Global — portal shell and components (student + staff).
   Built only on tokens.css. Breakpoints: ≤ 900px sidebar becomes a drawer; ≤ 600px tables stack. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }
body.portal { margin: 0; font: 400 15px/1.55 var(--sg-font-body); color: var(--sg-text); background: var(--sg-bg); min-height: 100vh; }
.portal h1, .portal h2, .portal h3 { font-family: var(--sg-font-head); color: var(--sg-ink); line-height: 1.25; margin: 0; }
.portal h1 { font-size: 24px; } .portal h2 { font-size: 18px; } .portal h3 { font-size: 15px; }
.portal a { color: var(--sg-azure-700); }
.portal :focus-visible { outline: none; box-shadow: var(--sg-focus); border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 12px; top: -48px; z-index: 3000; background: var(--sg-navy-900); color: #fff; padding: 10px 16px; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.portal .skip-link { color: #fff; }

/* shell */
.pt-top { position: sticky; top: 0; z-index: 900; display: flex; align-items: center; gap: 12px; height: 60px; padding: 0 16px; background: #fff; border-bottom: 1px solid var(--sg-line); }
.pt-top .brand img { height: 38px; display: block; }
.pt-area { font: 600 12px var(--sg-font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--sg-navy-700); background: var(--sg-navy-50); border: 1px solid var(--sg-navy-100); padding: 4px 10px; border-radius: var(--sg-radius-pill); }
.pt-spacer { flex: 1; }
.pt-user { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--sg-muted); }
.pt-user strong { color: var(--sg-ink); font-weight: 600; }
.pt-menu-btn.btn { display: none; }
.pt-layout { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: calc(100vh - 60px); }
.pt-side { background: var(--sg-navy-900); color: #dbe5f3; padding: 16px 12px; }
.pt-side nav { display: flex; flex-direction: column; gap: 2px; position: sticky; top: 76px; }
.pt-side .grp { margin: 14px 12px 4px; font: 700 11px var(--sg-font-body); letter-spacing: .1em; text-transform: uppercase; color: #9fb3d0; }
.pt-side a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; color: #e8eef8; text-decoration: none; font-weight: 500; min-height: 40px; }
.pt-side a:hover { background: rgba(255,255,255,.08); }
.pt-side a[aria-current="page"] { background: #fff; color: var(--sg-navy-900); font-weight: 700; }
.pt-side a .count { margin-left: auto; background: var(--sg-gold-500); color: var(--sg-navy-950); font: 700 11px var(--sg-font-body); padding: 1px 7px; border-radius: 999px; }
.pt-side :focus-visible { box-shadow: 0 0 0 3px var(--sg-navy-900), 0 0 0 5px #fff; }
.pt-main { padding: 28px clamp(16px, 3vw, 40px) 56px; max-width: 1240px; width: 100%; }
.pt-head { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px 24px; margin-bottom: 22px; }
.pt-head p { margin: 4px 0 0; color: var(--sg-muted); }
.pt-head .actions { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs { font-size: 13px; color: var(--sg-muted); margin-bottom: 8px; } .crumbs a { color: var(--sg-muted); }

/* cards + grids */
.card { background: var(--sg-surface); border: 1px solid var(--sg-line); border-radius: var(--sg-radius-lg); padding: 20px; box-shadow: var(--sg-shadow-1); }
.card + .card { margin-top: 16px; }
.card > h2 { margin-bottom: 12px; }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.main-side { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); align-items: start; }
.stat { display: block; text-decoration: none; color: inherit; }
.stat .n { display: block; font: 700 30px/1.1 var(--sg-font-head); color: var(--sg-navy-700); }
.stat .l { display: block; margin-top: 4px; color: var(--sg-muted); font-size: 13px; }
a.stat:hover { border-color: var(--sg-navy-200); box-shadow: var(--sg-shadow-2); }
.stat.alert .n { color: var(--sg-danger); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 0 18px; border-radius: var(--sg-radius); border: 1px solid transparent; font: 600 14px var(--sg-font-body); cursor: pointer; text-decoration: none; background: var(--sg-navy-700); color: #fff !important; transition: background .15s; }
.btn:hover { background: var(--sg-navy-800); }
.btn.gold { background: var(--sg-gold-500); color: var(--sg-navy-950) !important; } .btn.gold:hover { background: #c29a5a; }
.btn.ghost { background: #fff; color: var(--sg-navy-700) !important; border-color: var(--sg-navy-200); } .btn.ghost:hover { background: var(--sg-navy-50); }
.btn.danger { background: var(--sg-danger); } .btn.danger:hover { background: #8f1c12; }
.btn.small { min-height: 32px; padding: 0 12px; font-size: 13px; }
.btn[disabled], .btn[aria-busy="true"] { opacity: .6; cursor: not-allowed; }

/* forms */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label, .field .lbl { font-weight: 600; font-size: 13px; color: var(--sg-ink); }
.field .hint { font-size: 12px; color: var(--sg-muted); }
.field input, .field select, .field textarea { width: 100%; min-height: 42px; padding: 9px 12px; border: 1px solid #b8c3d4; border-radius: var(--sg-radius); background: #fff; font: 400 15px var(--sg-font-body); color: var(--sg-ink); }
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--sg-navy-700); box-shadow: 0 0 0 3px var(--sg-navy-100); }
.field .err { color: var(--sg-danger); font-size: 13px; font-weight: 500; }
.field [aria-invalid="true"] { border-color: var(--sg-danger); }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; }
.inline-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.inline-form .field { margin-bottom: 0; flex: 1 1 180px; }

/* badges + alerts */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font: 600 12px var(--sg-font-body); background: var(--sg-navy-100); color: var(--sg-navy-800); white-space: nowrap; }
.badge.ok { background: var(--sg-success-bg); color: var(--sg-success); }
.badge.warn { background: var(--sg-warning-bg); color: var(--sg-warning); }
.badge.bad { background: var(--sg-danger-bg); color: var(--sg-danger); }
.badge.info { background: var(--sg-info-bg); color: var(--sg-azure-700); }
.alert { padding: 12px 14px; border-radius: var(--sg-radius); border: 1px solid; margin-bottom: 16px; font-size: 14px; }
.alert.info { background: var(--sg-info-bg); border-color: #b7dcee; color: #0f4a6d; }
.alert.warn { background: var(--sg-warning-bg); border-color: #f0d28a; color: #5f3d00; }
.alert.bad { background: var(--sg-danger-bg); border-color: #f1b5b0; color: #7a1a12; }
.alert.ok { background: var(--sg-success-bg); border-color: #a9d9bd; color: #0f4d2a; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--sg-line); border-radius: var(--sg-radius); background: #fff; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th { text-align: left; font: 700 12px var(--sg-font-body); letter-spacing: .05em; text-transform: uppercase; color: var(--sg-muted); background: var(--sg-navy-50); padding: 10px 14px; white-space: nowrap; }
table.data td { overflow-wrap: anywhere; padding: 12px 14px; border-top: 1px solid var(--sg-line); vertical-align: top; }
table.data tr:hover td { background: #fafcff; }
.portal select, .portal input, .portal textarea { max-width: 100%; }
.pt-main > * { min-width: 0; }
.pager { display: flex; align-items: center; gap: 12px; margin-top: 12px; color: var(--sg-muted); font-size: 14px; }

/* lists, timeline, states */
.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 12px 0; border-top: 1px solid var(--sg-line); display: flex; gap: 12px; align-items: flex-start; }
.list li:first-child { border-top: 0; padding-top: 0; }
.list .grow { flex: 1; min-width: 0; }
.muted { color: var(--sg-muted); } .small { font-size: 13px; }
.timeline { list-style: none; margin: 0; padding: 0 0 0 18px; border-left: 2px solid var(--sg-navy-100); }
.timeline li { position: relative; padding: 0 0 18px 14px; }
.timeline li::before { content: ""; position: absolute; left: -25px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: var(--sg-navy-700); border: 2px solid #fff; box-shadow: 0 0 0 1px var(--sg-navy-200); }
.empty, .loading, .errorbox { text-align: center; padding: 40px 16px; color: var(--sg-muted); }
.errorbox { color: var(--sg-danger); }
.spinner { display: inline-block; width: 22px; height: 22px; border: 3px solid var(--sg-navy-100); border-top-color: var(--sg-navy-700); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.progress { height: 8px; background: var(--sg-navy-100); border-radius: 99px; overflow: hidden; } .progress > i { display: block; height: 100%; background: var(--sg-gold-500); }
.chat { display: flex; flex-direction: column; gap: 10px; max-height: 420px; overflow-y: auto; padding: 4px; }
.bubble { max-width: 82%; padding: 10px 14px; border-radius: 14px; background: var(--sg-navy-50); border: 1px solid var(--sg-navy-100); }
.bubble.me { align-self: flex-end; background: var(--sg-navy-700); color: #fff; border-color: var(--sg-navy-700); }
.bubble .who { font-size: 12px; opacity: .8; margin-bottom: 2px; }

/* toast + dialog */
.toasts { position: fixed; right: 16px; bottom: 16px; z-index: 4000; display: flex; flex-direction: column; gap: 8px; max-width: calc(100vw - 32px); }
.toast { padding: 12px 16px; border-radius: var(--sg-radius); background: var(--sg-navy-900); color: #fff; box-shadow: var(--sg-shadow-2); }
.toast.bad { background: var(--sg-danger); } .toast.ok { background: var(--sg-success); }
dialog.dlg { border: 0; border-radius: var(--sg-radius-lg); padding: 24px; width: min(520px, calc(100vw - 32px)); box-shadow: var(--sg-shadow-2); }
dialog.dlg::backdrop { background: rgba(12,26,46,.55); }

/* auth screens */
.auth-wrap { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.auth-art { background: linear-gradient(160deg, rgba(17,35,59,.9) 0%, rgba(17,35,59,.78) 55%, rgba(31,61,110,.7) 100%), var(--auth-photo, none) center / cover no-repeat, var(--sg-navy-900); color: #fff; padding: 56px; display: flex; flex-direction: column; justify-content: center; gap: 18px; }
.auth-art h1 { color: #fff; font-size: 32px; } .auth-art p { color: #d5e1f2; max-width: 440px; margin: 0; } .auth-art img { height: 52px; width: auto; align-self: flex-start; background: #fff; padding: 8px 12px; border-radius: 12px; }
.auth-art .gold { color: var(--sg-gold-300); }
.auth-card { display: flex; align-items: center; justify-content: center; padding: 32px 20px; }
.auth-card .card { width: min(440px, 100%); box-shadow: var(--sg-shadow-2); }
.auth-card h2 { font-size: 22px; margin-bottom: 4px; }
.auth-links { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 14px; font-size: 14px; }
.divider { text-align: center; color: var(--sg-muted); font-size: 13px; margin: 14px 0; }

@media (max-width: 1100px) { .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid.main-side { grid-template-columns: minmax(0, 1fr); } .grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) {
  .pt-layout { grid-template-columns: minmax(0, 1fr); } /* not 1fr: a plain 1fr track grows to its widest unwrapped content and pushes the page past the screen */
  .pt-menu-btn.btn { display: inline-flex; }
  .pt-side { position: fixed; top: 60px; left: 0; bottom: 0; width: min(300px, 86vw); z-index: 950; transform: translateX(-102%); transition: transform .2s; overflow-y: auto; }
  body.nav-open .pt-side { transform: none; box-shadow: var(--sg-shadow-2); }
  .pt-user .who-txt { display: none; }
  .auth-wrap { grid-template-columns: 1fr; } .auth-art { padding: 28px 20px; } .auth-art h1 { font-size: 24px; }
}
@media (max-width: 600px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4, .form-row { grid-template-columns: minmax(0, 1fr); }
  .pt-main { padding: 20px 16px 48px; } .pt-head .actions { margin-left: 0; width: 100%; }
  /* 16px or larger stops iPhones zooming the page when a field is tapped */
  .field input, .field select, .field textarea { font-size: 16px; }
  table.stack thead { position: absolute; left: -9999px; }
  table.stack, table.stack tbody, table.stack tr, table.stack td { display: block; width: 100%; }
  table.stack tr { border-top: 1px solid var(--sg-line); padding: 8px 0; }
  table.stack td { border: 0; padding: 4px 14px; }
  table.stack td[data-label]::before { content: attr(data-label) ": "; font-weight: 700; color: var(--sg-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
  .bubble { max-width: 94%; }
}
@media (max-width: 520px) {
  .pt-top { gap: 8px; padding: 0 10px; } .pt-top .brand img { height: 30px; } .pt-area { display: none; }
  .pt-top .btn.small { padding: 0 10px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }
/* Sign-in screens are photographic; portals themselves stay clean. */
[data-area="student"][data-auth] { --auth-photo: url("/assets/graduation%20photo.avif"); }
[data-area="staff"][data-auth] { --auth-photo: url("/assets/photo%202.avif"); }
.pw-wrap { position: relative; } .pw-wrap input { padding-right: 76px; }
.pw-toggle { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); min-height: 32px; padding: 0 12px; border: 1px solid var(--sg-navy-200); border-radius: 8px; background: #fff; color: var(--sg-navy-700); font: 600 13px var(--sg-font-body); cursor: pointer; }
.pw-toggle:hover { background: var(--sg-navy-50); }