/*
 * STC portals: the standard layout and components (used by php/portal_layout.php).
 * One accent colour (the crest green), white cards on a soft grey-green background, system fonts.
 *
 * Components: .pu-card, .pu-grid, .pu-form / .pu-field, .pu-btn, .pu-table-wrap > table.pu-table, .pu-alert-*,
 * .pu-stats > .pu-stat, .pu-tiles > .pu-tile, .pu-details (dl), .pu-badge, .pu-empty, .pu-toolbar, .pu-avatar.
 */
:root {
  --pu-green: #17803d;
  --pu-green-deep: #0f5a2e;
  --pu-green-dark: #0b3a20;
  --pu-green-tint: #e8f3ec;
  --pu-bg: #f3f5f2;
  --pu-surface: #ffffff;
  --pu-ink: #142019;
  --pu-text: #4d5a53;
  --pu-muted: #7b877f;
  --pu-line: #dfe6e1;
  --pu-red: #b42318;
  --pu-red-tint: #fdecea;
  --pu-amber: #8a5a00;
  --pu-amber-tint: #fff4dc;
  --pu-radius: 16px;
  --pu-radius-sm: 12px;
  --pu-shadow: 0 1px 2px rgba(20, 32, 25, .04), 0 8px 24px rgba(20, 32, 25, .06);
  --pu-heading: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --pu-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --pu-sidebar: 264px;
}

/* ---------------------------------------------------------------- base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body.pu { margin: 0; min-height: 100vh; background: var(--pu-bg); color: var(--pu-text); font-family: var(--pu-body); font-size: 15px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
.pu h1, .pu h2, .pu h3, .pu h4 { margin: 0 0 .5em; font-family: var(--pu-heading); color: var(--pu-ink); font-weight: 700; line-height: 1.25; }
.pu h1 { font-size: 28px; } .pu h2 { font-size: 22px; } .pu h3 { font-size: 18px; } .pu h4 { font-size: 16px; }
.pu p { margin: 0 0 1em; }
.pu a { color: var(--pu-green); text-decoration: none; }
.pu a:hover { color: var(--pu-green-deep); }
.pu img { max-width: 100%; height: auto; }
.pu hr { border: 0; border-top: 1px solid var(--pu-line); margin: 24px 0; }
.pu :focus-visible { outline: 3px solid rgba(23, 128, 61, .35); outline-offset: 2px; }
.pu-skip { position: absolute; left: -9999px; top: 8px; z-index: 100; padding: 8px 14px; border-radius: 8px; background: var(--pu-ink); color: #fff !important; }
.pu-skip:focus { left: 8px; }
.pu-muted { color: var(--pu-muted); }
.pu-nav-toggle { display: none; }

/* ---------------------------------------------------------------- public header (Old Boys, students, logins) */
.pu-header { position: sticky; top: 0; z-index: 30; background: #fff; border-bottom: 1px solid var(--pu-line); box-shadow: 0 4px 16px rgba(20, 32, 25, .04); }
.pu-header-inner { display: flex; align-items: center; gap: 20px; max-width: 1180px; margin: 0 auto; padding: 12px 20px; flex-wrap: wrap; }
.pu-brand { display: flex; align-items: center; gap: 12px; color: var(--pu-ink) !important; }
.pu-brand img { width: 48px; height: 48px; object-fit: contain; }
.pu-brand strong { display: block; font-family: var(--pu-heading); font-size: 18px; line-height: 1.15; }
.pu-brand small { display: block; color: var(--pu-green); font-size: 12px; font-weight: 600; letter-spacing: .6px; text-transform: uppercase; }
.pu-topnav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.pu-topnav a { padding: 8px 14px; border-radius: 10px; color: var(--pu-ink); font-weight: 500; font-size: 15px; }
.pu-topnav a:hover { background: var(--pu-green-tint); color: var(--pu-green); }
.pu-topnav a.is-active { background: var(--pu-green-tint); color: var(--pu-green-deep); }
.pu-menu-btn { display: none; margin-left: auto; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid var(--pu-line); border-radius: 10px; color: var(--pu-ink); cursor: pointer; font-size: 18px; }

/* ---------------------------------------------------------------- admin shell (sidebar areas) */
.pu-sidebar { position: fixed; inset: 0 auto 0 0; z-index: 40; width: var(--pu-sidebar); overflow-y: auto; background: var(--pu-green-dark); color: #fff; padding-bottom: 24px; }
.pu-sidebar-brand { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.pu-sidebar-brand img { width: 40px; height: 40px; object-fit: contain; background: #fff; border-radius: 10px; padding: 3px; }
.pu-sidebar-brand strong { display: block; font-family: var(--pu-heading); font-size: 16px; line-height: 1.2; }
.pu-sidebar-brand small { display: block; color: rgba(255, 255, 255, .6); font-size: 12px; }
.pu-sidebar-user { padding: 14px 20px 4px; color: rgba(255, 255, 255, .75); font-size: 13px; }
.pu-sidebar-nav { padding: 8px 10px; }
.pu-nav-label { padding: 16px 12px 6px; color: #8fd8a6; font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.pu-sidebar-nav a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 10px; color: rgba(255, 255, 255, .82) !important; font-size: 14px; font-weight: 500; }
.pu-sidebar-nav a i { width: 18px; color: #8fd8a6; text-align: center; }
.pu-sidebar-nav a:hover { background: rgba(255, 255, 255, .08); color: #fff !important; }
.pu-sidebar-nav a.is-active { background: var(--pu-green); color: #fff !important; }
.pu-sidebar-nav a.is-active i { color: #fff; }
.pu-nav-logout { margin-top: 12px; border-top: 1px solid rgba(255, 255, 255, .08); border-radius: 0 !important; padding-top: 14px !important; }
.pu-shell { margin-left: var(--pu-sidebar); min-height: 100vh; display: flex; flex-direction: column; }
.pu-topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 14px; padding: 12px 28px; background: #fff; border-bottom: 1px solid var(--pu-line); }
.pu-topbar-title { font-family: var(--pu-heading); font-weight: 700; color: var(--pu-ink); font-size: 17px; }
.pu-topbar-right { display: flex; align-items: center; gap: 16px; margin-left: auto; font-size: 14px; }
.pu-topbar-right a:not(.pu-btn) { color: var(--pu-ink); font-weight: 500; }
.pu-date { color: var(--pu-muted); }
.pu-sidebar-backdrop { display: none; }

/* ---------------------------------------------------------------- main + footer */
.pu-main { flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; padding: 32px 20px 56px; }
.pu-has-sidebar .pu-main { max-width: 1240px; padding: 28px 28px 56px; }
.pu-main-wide { max-width: none !important; }
.pu-page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.pu-page-head h1 { margin: 0; }
.pu-page-head p { margin: 4px 0 0; color: var(--pu-muted); }
.pu-page-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.pu-footer { border-top: 1px solid var(--pu-line); background: #fff; }
.pu-footer-inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; max-width: 1180px; margin: 0 auto; padding: 18px 20px; color: var(--pu-muted); font-size: 13px; }

/* ---------------------------------------------------------------- cards + grid */
.pu-card { background: var(--pu-surface); border: 1px solid var(--pu-line); border-radius: var(--pu-radius); box-shadow: var(--pu-shadow); padding: 24px; margin-bottom: 20px; }
.pu-card > h2:first-child, .pu-card > h3:first-child { margin-top: 0; }
.pu-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.pu-card-head h2, .pu-card-head h3 { margin: 0; }
.pu-narrow { max-width: 520px; margin-left: auto; margin-right: auto; }
.pu-medium { max-width: 820px; margin-left: auto; margin-right: auto; }
.pu-grid { display: grid; gap: 20px; }
.pu-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pu-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pu-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.pu-grid-aside { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }

/* ---------------------------------------------------------------- forms */
.pu-form { display: grid; gap: 18px; }
.pu-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 20px; }
.pu-form-grid .pu-field-full { grid-column: 1 / -1; }
.pu-field { display: flex; flex-direction: column; gap: 6px; }
.pu-field > label, .pu-label { font-size: 14px; font-weight: 500; color: var(--pu-ink); }
.pu-field .pu-hint { font-size: 13px; color: var(--pu-muted); }
.pu-required::after { content: " *"; color: var(--pu-red); }
.pu input[type="text"], .pu input[type="email"], .pu input[type="password"], .pu input[type="number"], .pu input[type="tel"],
.pu input[type="date"], .pu input[type="search"], .pu input[type="url"], .pu select, .pu textarea {
  width: 100%; min-height: 46px; padding: 10px 14px; border: 1px solid #cfd8d2; border-radius: var(--pu-radius-sm); background: #fff;
  color: var(--pu-ink); font: inherit; font-size: 15px; transition: border-color .15s ease, box-shadow .15s ease;
}
.pu textarea { min-height: 130px; resize: vertical; }
.pu select { appearance: none; -webkit-appearance: none; padding-right: 38px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235f6b64' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; }
.pu input:focus, .pu select:focus, .pu textarea:focus { outline: 0; border-color: var(--pu-green); box-shadow: 0 0 0 4px rgba(23, 128, 61, .14); }
.pu input::placeholder, .pu textarea::placeholder { color: #9aa59e; }
.pu input[type="file"] { width: 100%; padding: 10px; border: 1px dashed #cfd8d2; border-radius: var(--pu-radius-sm); background: var(--pu-bg); font-size: 14px; }
.pu input[type="file"]::file-selector-button { margin-right: 12px; padding: 8px 14px; border: 0; border-radius: 8px; background: var(--pu-green-deep); color: #fff; font: inherit; font-weight: 500; cursor: pointer; }
.pu input[type="checkbox"], .pu input[type="radio"] { width: 18px; height: 18px; accent-color: var(--pu-green); vertical-align: middle; }
.pu-inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.pu-inline > select, .pu-inline > input { width: auto; flex: 1 1 120px; }
.pu-form-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ---------------------------------------------------------------- buttons */
.pu-btn, .pu button[type="submit"], .pu input[type="submit"], .pu input[type="button"] {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 22px; border: 0;
  border-radius: var(--pu-radius-sm); background: var(--pu-green); color: #fff !important; font: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; text-decoration: none; transition: background-color .15s ease, transform .15s ease; box-shadow: 0 6px 16px rgba(23, 128, 61, .18);
}
.pu-btn:hover, .pu button[type="submit"]:hover, .pu input[type="submit"]:hover, .pu input[type="button"]:hover { background: var(--pu-green-deep); color: #fff !important; transform: translateY(-1px); }
.pu-btn-secondary { background: #fff !important; color: var(--pu-ink) !important; border: 1px solid var(--pu-line); box-shadow: none; }
.pu button[type="submit"].pu-btn-secondary { color: var(--pu-ink) !important; }
.pu-btn-secondary:hover { background: var(--pu-green-tint) !important; color: var(--pu-green-deep) !important; }
.pu-btn-danger { background: var(--pu-red) !important; box-shadow: none; }
.pu-btn-danger:hover { background: #8a1c13 !important; }
.pu-btn-sm { min-height: 36px; padding: 0 14px; font-size: 14px; box-shadow: none; }
.pu-btn-block { width: 100%; }
.pu-message-list { margin-top: 20px; }
.pu-message-list h3 { margin: 22px 0 10px; color: var(--pu-ink); font-size: 17px; }
.pu-message-list ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.pu-message-list li a { display: block; padding: 12px 14px; border: 1px solid var(--pu-line); border-radius: var(--pu-radius-sm); color: var(--pu-green-deep); background: #fff; text-decoration: none; }
.pu-message-list li a:hover { border-color: var(--pu-green); background: var(--pu-green-tint); }

/* ---------------------------------------------------------------- tables */
.pu-table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--pu-line); border-radius: var(--pu-radius); background: #fff; }
.pu-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.pu-table th { position: sticky; top: 0; padding: 12px 14px; background: var(--pu-green-tint); color: var(--pu-green-deep); font-size: 12px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--pu-line); }
.pu-table td { padding: 11px 14px; border-top: 1px solid var(--pu-line); color: var(--pu-ink); vertical-align: middle; }
.pu-table tr:first-child td { border-top: 0; }
.pu-table tbody tr:hover td { background: #f7faf8; }
.pu-table img { border-radius: 8px; }
.pu-table .pu-num { text-align: right; font-variant-numeric: tabular-nums; }
.pu-table-compact td, .pu-table-compact th { padding: 8px 10px; }

/* ---------------------------------------------------------------- feedback */
.pu-alert { margin: 0 0 18px; padding: 14px 18px; border-radius: var(--pu-radius-sm); border: 1px solid transparent; font-size: 15px; }
.pu-alert-success { background: var(--pu-green-tint); border-color: #cfe6d7; color: var(--pu-green-deep); }
.pu-alert-error { background: var(--pu-red-tint); border-color: #f6cfca; color: #8a1c13; }
.pu-alert-warning { background: var(--pu-amber-tint); border-color: #f3e0b5; color: var(--pu-amber); }
.pu-alert-info { background: #fff; border-color: var(--pu-line); color: var(--pu-text); }
.pu-alert a { font-weight: 600; }
.pu-empty { padding: 36px 20px; text-align: center; color: var(--pu-muted); }
.pu-empty i { display: block; margin-bottom: 10px; font-size: 28px; color: #b9c6be; }
.pu-badge { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--pu-green-tint); color: var(--pu-green-deep); font-size: 12px; font-weight: 600; white-space: nowrap; }
.pu-badge-red { background: var(--pu-red-tint); color: #8a1c13; }
.pu-badge-grey { background: #eef1ef; color: var(--pu-muted); }

/* ---------------------------------------------------------------- stats, tiles, details, media */
.pu-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 22px; }
.pu-stat { display: grid; grid-template-columns: 48px 1fr; column-gap: 14px; align-items: center; padding: 18px; background: #fff; border: 1px solid var(--pu-line); border-radius: var(--pu-radius); color: var(--pu-ink) !important; }
a.pu-stat:hover { box-shadow: var(--pu-shadow); border-color: rgba(23, 128, 61, .35); }
.pu-stat-icon { grid-row: span 2; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: var(--pu-green-tint); color: var(--pu-green); font-size: 20px; }
.pu-stat strong { font-family: var(--pu-heading); font-size: 26px; line-height: 1.1; }
.pu-stat span { font-size: 13px; color: var(--pu-muted); line-height: 1.3; }
.pu-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.pu-tile { display: flex; gap: 12px; align-items: flex-start; padding: 16px; background: #fff; border: 1px solid var(--pu-line); border-radius: 14px; color: var(--pu-ink) !important; transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease; }
.pu-tile:hover { border-color: rgba(23, 128, 61, .35); box-shadow: var(--pu-shadow); transform: translateY(-2px); }
.pu-tile i { flex: 0 0 40px; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--pu-green-tint); color: var(--pu-green); font-size: 17px; }
.pu-tile strong { display: block; font-size: 15px; }
.pu-tile small { display: block; margin-top: 2px; color: var(--pu-muted); font-size: 13px; line-height: 1.4; }
.pu-details { display: grid; grid-template-columns: minmax(140px, 220px) 1fr; margin: 0; border: 1px solid var(--pu-line); border-radius: var(--pu-radius); overflow: hidden; background: #fff; }
.pu-details dt, .pu-details dd { margin: 0; padding: 11px 16px; border-top: 1px solid var(--pu-line); }
.pu-details dt { background: #f7faf8; color: var(--pu-muted); font-size: 13px; font-weight: 600; }
.pu-details dd { color: var(--pu-ink); }
.pu-details dt:first-of-type, .pu-details dt:first-of-type + dd { border-top: 0; }
.pu-avatar { width: 120px; height: 120px; object-fit: cover; border-radius: 18px; border: 1px solid var(--pu-line); background: var(--pu-bg); }
.pu-avatar-sm { width: 44px; height: 44px; border-radius: 12px; }
.pu-toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 18px; }
.pu-toolbar .pu-field { flex: 1 1 180px; }
.pu-list { list-style: none; margin: 0; padding: 0; }
.pu-list li { padding: 12px 0; border-top: 1px solid var(--pu-line); }
.pu-list li:first-child { border-top: 0; padding-top: 0; }
.pu-list strong { display: block; color: var(--pu-ink); }
.pu-list small { color: var(--pu-muted); }
.pu-prose { color: var(--pu-text); line-height: 1.75; }
.pu-prose img { border-radius: 12px; margin: 8px 0; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .pu-stats, .pu-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pu-grid-3, .pu-grid-aside { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .pu-sidebar { transform: translateX(-100%); transition: transform .2s ease; }
  .pu-nav-toggle:checked ~ .pu-sidebar { transform: none; }
  .pu-nav-toggle:checked ~ .pu-sidebar-backdrop { display: block; position: fixed; inset: 0; z-index: 35; background: rgba(11, 58, 32, .35); }
  .pu-shell { margin-left: 0; }
  .pu-topbar .pu-menu-btn { display: inline-flex; margin-left: 0; }
  .pu-date { display: none; }
  .pu-menu-btn { display: inline-flex; }
  .pu-topnav { display: none; width: 100%; flex-direction: column; margin: 4px 0 0; }
  .pu-nav-toggle:checked ~ .pu-topnav { display: flex; }
}
@media (max-width: 640px) {
  .pu-main, .pu-has-sidebar .pu-main { padding: 22px 16px 40px; }
  .pu-topbar { padding: 10px 16px; }
  .pu-card { padding: 18px; }
  .pu-grid-2, .pu-form-grid, .pu-stats, .pu-grid-4 { grid-template-columns: 1fr; }
  .pu-details { grid-template-columns: 1fr; }
  .pu-details dd { border-top: 0; padding-top: 0; }
  .pu-page-head h1 { font-size: 24px; }
  .pu-topbar-right a:not(.pu-btn) { display: none; }
}
@media (prefers-reduced-motion: reduce) { .pu * { transition: none !important; } }

/* ---------------------------------------------------------------- obB: Bootstrap alert markup printed by php/process_*.php AJAX
   handlers (class="alert alert-success|danger|warning|info"), shown inside converted login and form pages. */
.pu .alert { margin: 0 0 18px; padding: 14px 18px; border-radius: var(--pu-radius-sm); border: 1px solid var(--pu-line); background: #fff; color: var(--pu-text); font-size: 15px; }
.pu .alert p { margin: 0; color: inherit !important; }
.pu .alert-success { background: var(--pu-green-tint); border-color: #cfe6d7; color: var(--pu-green-deep); }
.pu .alert-danger { background: var(--pu-red-tint); border-color: #f6cfca; color: #8a1c13; }
.pu .alert-warning { background: var(--pu-amber-tint); border-color: #f3e0b5; color: var(--pu-amber); }
.pu-ajax-result:empty { display: none; }
.pu-center { text-align: center; }
.pu-form > p.pu-center { margin: 0; }
.pu-login-head { justify-content: center; text-align: center; margin-top: 8px; }