/* ==========================================================================
   CLEWS UI kit: header additions, forms, buttons, cards, tables, badges,
   toasts, modals, pagination, empty states, banners, error pages.
   Uses the brand colours from style.css (#0B5FC7 primary, #7B2CBF accent).
   ========================================================================== */

:root {
  --ui-primary: #0B5FC7;
  --ui-primary-dark: #084a9c;
  --ui-accent: #7B2CBF;
  --ui-success: #047857;
  --ui-success-bg: #ecfdf5;
  --ui-error: #b91c1c;
  --ui-error-bg: #fef2f2;
  --ui-warning: #92400e;
  --ui-warning-bg: #fffbeb;
  --ui-info: #1e40af;
  --ui-info-bg: #eff6ff;
  --ui-text: #0f172a;
  --ui-muted: #475569;
  --ui-border: #e2e8f0;
  --ui-surface: #ffffff;
  --ui-bg: #f8fafc;
  --ui-radius: 0.75rem;
  --ui-focus: 0 0 0 3px rgba(11, 95, 199, 0.35);
}

.ui-skip-link {
  position: absolute; left: -999px; top: 0.5rem; z-index: 1000;
  background: #fff; color: var(--ui-primary); padding: 0.5rem 1rem; border-radius: 0.5rem; font-weight: 600;
}
.ui-skip-link:focus { left: 0.5rem; box-shadow: var(--ui-focus); }

:where(a, button, input, select, textarea, [tabindex]):focus-visible { outline: none; box-shadow: var(--ui-focus); border-radius: 0.375rem; }

/* ---------------------------------------------------------------- header */
.site-header .nav-link.is-active { color: var(--ui-primary); }
.site-header .nav-links { gap: 1.25rem; }
.ui-menu { position: relative; }
.ui-bell, .ui-account-btn {
  display: inline-flex; align-items: center; gap: 0.4rem; background: transparent; border: 1px solid transparent;
  padding: 0.4rem 0.55rem; border-radius: 999px; color: #334155; cursor: pointer; font: inherit; font-weight: 600; font-size: 0.9rem;
}
.ui-bell:hover, .ui-account-btn:hover { background: #f1f5f9; }
.ui-bell { position: relative; }
.ui-bell-count {
  position: absolute; top: -2px; right: -4px; min-width: 1.15rem; height: 1.15rem; padding: 0 0.3rem;
  border-radius: 999px; background: #dc2626; color: #fff; font-size: 0.7rem; line-height: 1.15rem; text-align: center;
}
.ui-avatar {
  width: 1.9rem; height: 1.9rem; border-radius: 999px; display: inline-grid; place-items: center;
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-accent)); color: #fff; font-size: 0.85rem;
}
.ui-menu-panel {
  position: absolute; right: 0; top: calc(100% + 0.5rem); min-width: 14rem; background: #fff; border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius); box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.25); padding: 0.4rem; z-index: 70;
}
.ui-menu-item {
  display: block; width: 100%; text-align: left; padding: 0.55rem 0.75rem; border-radius: 0.5rem; color: #1e293b;
  font-size: 0.9rem; background: none; border: 0; cursor: pointer; font-family: inherit;
}
.ui-menu-item:hover, .ui-menu-item:focus-visible { background: #f1f5f9; }
.ui-menu-danger { color: var(--ui-error); }
.ui-menu-form { margin: 0; border-top: 1px solid var(--ui-border); margin-top: 0.3rem; padding-top: 0.3rem; }
.ui-bell-panel { width: 22rem; max-width: calc(100vw - 2rem); padding: 0; overflow: hidden; }
.ui-bell-head { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1rem; border-bottom: 1px solid var(--ui-border); }
.ui-bell-list { list-style: none; margin: 0; padding: 0; max-height: 22rem; overflow-y: auto; }
.ui-bell-list li a, .ui-bell-list li > div { display: block; padding: 0.7rem 1rem; border-bottom: 1px solid #f1f5f9; color: inherit; }
.ui-bell-list li a:hover { background: #f8fafc; }
.ui-bell-list .is-unread { background: #f0f7ff; }
.ui-bell-title { font-weight: 600; font-size: 0.875rem; display: block; }
.ui-bell-body { font-size: 0.8rem; color: var(--ui-muted); display: block; margin-top: 0.15rem; }
.ui-bell-time { font-size: 0.72rem; color: #94a3b8; display: block; margin-top: 0.2rem; }
.ui-bell-empty { padding: 1.25rem 1rem; color: var(--ui-muted); font-size: 0.875rem; text-align: center; }
.ui-bell-all { display: block; text-align: center; padding: 0.7rem; font-weight: 600; font-size: 0.875rem; color: var(--ui-primary); border-top: 1px solid var(--ui-border); }
.ui-link-btn { background: none; border: 0; color: var(--ui-primary); font-weight: 600; font-size: 0.8rem; cursor: pointer; padding: 0.2rem; }
@media (max-width: 768px) {
  .ui-menu { width: 100%; }
  .ui-menu-panel { position: static; box-shadow: none; margin-top: 0.4rem; width: 100%; }
  .ui-account-btn, .ui-bell { width: 100%; justify-content: flex-start; border: 1px solid var(--ui-border); border-radius: 0.6rem; }
  .ui-bell-count { position: static; margin-left: auto; }
}

/* ---------------------------------------------------------------- footer */
.site-footer-inner { max-width: 80rem; margin: 0 auto; display: flex; flex-direction: column; gap: 0.75rem; align-items: center; text-align: center; }
.site-footer-links { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; justify-content: center; }
.site-footer-links a { color: #475569; font-weight: 600; font-size: 0.9rem; }
.site-footer-links a:hover { color: var(--ui-primary); }

/* ---------------------------------------------------------------- page shell */
.ui-page { padding: 7.5rem 1.25rem 4rem; min-height: 70vh; background: var(--ui-bg); }
.ui-container { max-width: 72rem; margin: 0 auto; }
.ui-container-sm { max-width: 30rem; margin: 0 auto; }
.ui-container-md { max-width: 48rem; margin: 0 auto; }
.ui-page-head { margin-bottom: 1.5rem; }
.ui-page-title { font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 800; color: var(--ui-text); line-height: 1.2; margin: 0 0 0.4rem; }
.ui-page-sub { color: var(--ui-muted); margin: 0; }
.ui-grid { display: grid; gap: 1.25rem; }
.ui-grid-2 { grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); }
.ui-grid-3 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

/* ---------------------------------------------------------------- cards */
.ui-card { background: var(--ui-surface); border: 1px solid var(--ui-border); border-radius: var(--ui-radius); padding: 1.5rem; box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04); }
.ui-card + .ui-card { margin-top: 1.25rem; }
.ui-card h2 { font-size: 1.15rem; font-weight: 700; margin: 0 0 0.75rem; color: var(--ui-text); }
.ui-card-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.ui-card-head h2 { margin: 0; }
.ui-stat { display: flex; flex-direction: column; gap: 0.25rem; }
.ui-stat-value { font-size: 1.75rem; font-weight: 800; color: var(--ui-text); }
.ui-stat-label { color: var(--ui-muted); font-size: 0.875rem; }
.ui-dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1.25rem; margin: 0; }
.ui-dl dt { color: var(--ui-muted); font-size: 0.875rem; }
.ui-dl dd { margin: 0; color: var(--ui-text); word-break: break-word; }

/* ---------------------------------------------------------------- forms */
.ui-form { display: flex; flex-direction: column; gap: 1rem; }
.ui-field { display: flex; flex-direction: column; gap: 0.35rem; }
.ui-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 560px) { .ui-field-row { grid-template-columns: 1fr; } }
.ui-label { font-weight: 600; font-size: 0.9rem; color: #1e293b; }
.ui-hint { font-size: 0.8rem; color: var(--ui-muted); }
.ui-input, .ui-select, .ui-textarea {
  width: 100%; padding: 0.65rem 0.8rem; border: 1px solid #cbd5e1; border-radius: 0.55rem; background: #fff;
  font: inherit; font-size: 0.95rem; color: var(--ui-text); transition: border-color 0.15s, box-shadow 0.15s;
}
.ui-input:focus, .ui-select:focus, .ui-textarea:focus { border-color: var(--ui-primary); box-shadow: var(--ui-focus); outline: none; }
.ui-textarea { min-height: 8rem; resize: vertical; }
.ui-field.has-error .ui-input, .ui-field.has-error .ui-select, .ui-field.has-error .ui-textarea { border-color: var(--ui-error); }
.ui-field-error { color: var(--ui-error); font-size: 0.82rem; font-weight: 500; }
.ui-check { display: flex; gap: 0.6rem; align-items: flex-start; font-size: 0.9rem; color: #1e293b; }
.ui-check input { margin-top: 0.2rem; width: 1.05rem; height: 1.05rem; accent-color: var(--ui-primary); flex-shrink: 0; }
.ui-error-summary { border: 1px solid #fecaca; background: var(--ui-error-bg); color: var(--ui-error); border-radius: 0.6rem; padding: 0.85rem 1rem; }
.ui-error-summary ul { margin: 0.4rem 0 0 1.1rem; padding: 0; }
.ui-hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.ui-inline-form { display: inline; margin: 0; }
.ui-filters { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; margin-bottom: 1rem; }
.ui-filters .ui-field { min-width: 10rem; }
.ui-filters .ui-field-grow { flex: 1; min-width: 14rem; }

/* ---------------------------------------------------------------- buttons */
.ui-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem; padding: 0.62rem 1.15rem;
  border-radius: 0.55rem; border: 1px solid #cbd5e1; background: #fff; color: #1e293b; font: inherit; font-weight: 600;
  font-size: 0.9rem; cursor: pointer; text-decoration: none; transition: background 0.15s, box-shadow 0.15s, transform 0.1s; white-space: nowrap;
}
.ui-btn:hover { background: #f8fafc; }
.ui-btn:active { transform: translateY(1px); }
.ui-btn[disabled], .ui-btn.is-loading { opacity: 0.6; cursor: not-allowed; }
.ui-btn-primary { background: linear-gradient(to right, var(--ui-primary), var(--ui-accent)); color: #fff; border-color: transparent; }
.ui-btn-primary:hover { background: linear-gradient(to right, var(--ui-primary-dark), #6a24a6); box-shadow: 0 8px 18px -6px rgba(11, 95, 199, 0.45); }
.ui-btn-danger { background: #dc2626; color: #fff; border-color: #dc2626; }
.ui-btn-danger:hover { background: #b91c1c; }
.ui-btn-light { background: rgba(255,255,255,0.85); }
.ui-btn-ghost { background: transparent; border-color: transparent; color: var(--ui-primary); }
.ui-btn-ghost:hover { background: #eff6ff; }
.ui-btn-sm { padding: 0.38rem 0.7rem; font-size: 0.8rem; }
.ui-btn-block { width: 100%; }
.ui-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

/* ---------------------------------------------------------------- tables */
.ui-table-wrap { overflow-x: auto; border: 1px solid var(--ui-border); border-radius: var(--ui-radius); background: #fff; }
.ui-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.ui-table th, .ui-table td { padding: 0.75rem 0.9rem; text-align: left; border-bottom: 1px solid #f1f5f9; vertical-align: top; }
.ui-table th { background: #f8fafc; font-weight: 700; color: #334155; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
.ui-table th a { color: inherit; }
.ui-table th a[aria-sort]::after { content: ' ↕'; opacity: 0.4; }
.ui-table th a[aria-sort="ascending"]::after { content: ' ↑'; opacity: 1; }
.ui-table th a[aria-sort="descending"]::after { content: ' ↓'; opacity: 1; }
.ui-table tbody tr:hover { background: #fafcff; }
.ui-table td.ui-nowrap { white-space: nowrap; }
.ui-muted { color: var(--ui-muted); }
.ui-small { font-size: 0.82rem; }
.ui-truncate { max-width: 22rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------------------------------------------------------- badges */
.ui-badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.75rem; font-weight: 700; line-height: 1.5; white-space: nowrap; }
.ui-badge-gray { background: #f1f5f9; color: #334155; }
.ui-badge-green { background: #dcfce7; color: #166534; }
.ui-badge-yellow { background: #fef9c3; color: #854d0e; }
.ui-badge-red { background: #fee2e2; color: #991b1b; }
.ui-badge-blue { background: #dbeafe; color: #1e40af; }
.ui-badge-purple { background: #f3e8ff; color: #6b21a8; }

/* ---------------------------------------------------------------- banners */
.ui-banner { position: relative; z-index: 40; margin-top: 5.5rem; }
.ui-banner + main .ui-page { padding-top: 2rem; }
.ui-banner-inner { max-width: 80rem; margin: 0 auto; padding: 0.7rem 1.25rem; display: flex; gap: 1rem; align-items: center; justify-content: space-between; flex-wrap: wrap; font-size: 0.9rem; }
.ui-banner-warning { background: var(--ui-warning-bg); color: var(--ui-warning); border-bottom: 1px solid #fde68a; }
.ui-alert { border-radius: 0.6rem; padding: 0.85rem 1rem; font-size: 0.9rem; margin-bottom: 1rem; }
.ui-alert-info { background: var(--ui-info-bg); color: var(--ui-info); border: 1px solid #bfdbfe; }
.ui-alert-success { background: var(--ui-success-bg); color: var(--ui-success); border: 1px solid #a7f3d0; }
.ui-alert-warning { background: var(--ui-warning-bg); color: var(--ui-warning); border: 1px solid #fde68a; }
.ui-alert-error { background: var(--ui-error-bg); color: var(--ui-error); border: 1px solid #fecaca; }
.ui-noscript-flash { position: fixed; bottom: 1rem; right: 1rem; padding: 0.8rem 1rem; border-radius: 0.6rem; background: #fff; border: 1px solid var(--ui-border); z-index: 900; }

/* ---------------------------------------------------------------- toasts */
.ui-toasts { position: fixed; right: 1rem; bottom: 1rem; display: flex; flex-direction: column; gap: 0.6rem; z-index: 1100; max-width: min(24rem, calc(100vw - 2rem)); }
.ui-toast {
  display: flex; gap: 0.75rem; align-items: flex-start; padding: 0.85rem 0.9rem 0.85rem 1rem; border-radius: 0.7rem; background: #fff;
  border: 1px solid var(--ui-border); border-left-width: 4px; box-shadow: 0 18px 40px -14px rgba(15, 23, 42, 0.35);
  font-size: 0.9rem; color: var(--ui-text); animation: ui-toast-in 0.22s ease-out;
}
.ui-toast-success { border-left-color: #10b981; }
.ui-toast-error { border-left-color: #ef4444; }
.ui-toast-warning { border-left-color: #f59e0b; }
.ui-toast-info { border-left-color: var(--ui-primary); }
.ui-toast-msg { flex: 1; line-height: 1.45; }
.ui-toast-close { background: none; border: 0; font-size: 1.2rem; line-height: 1; color: #64748b; cursor: pointer; padding: 0 0.2rem; }
.ui-toast.is-leaving { animation: ui-toast-out 0.18s ease-in forwards; }
@keyframes ui-toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes ui-toast-out { to { opacity: 0; transform: translateX(16px); } }

/* ---------------------------------------------------------------- modal */
.ui-modal-backdrop { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.55); display: flex; align-items: center; justify-content: center; padding: 1rem; z-index: 1000; animation: ui-fade 0.15s ease-out; }
.ui-modal { background: #fff; border-radius: 1rem; width: 100%; max-width: 34rem; max-height: calc(100vh - 2rem); display: flex; flex-direction: column; box-shadow: 0 30px 60px -20px rgba(15, 23, 42, 0.5); }
.ui-modal-lg { max-width: 52rem; }
.ui-modal-sm { max-width: 26rem; }
.ui-modal-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 1.25rem; border-bottom: 1px solid var(--ui-border); }
.ui-modal-title { font-size: 1.1rem; font-weight: 700; margin: 0; }
.ui-modal-close { background: none; border: 0; font-size: 1.5rem; line-height: 1; cursor: pointer; color: #64748b; padding: 0.2rem 0.4rem; border-radius: 0.4rem; }
.ui-modal-close:hover { background: #f1f5f9; }
.ui-modal-body { padding: 1.25rem; overflow-y: auto; }
.ui-modal-foot { display: flex; justify-content: flex-end; gap: 0.5rem; padding: 0.9rem 1.25rem; border-top: 1px solid var(--ui-border); background: #f8fafc; border-radius: 0 0 1rem 1rem; }
.ui-modal-loading { padding: 2rem; text-align: center; color: var(--ui-muted); }
body.ui-modal-open { overflow: hidden; }
@keyframes ui-fade { from { opacity: 0; } to { opacity: 1; } }

/* ---------------------------------------------------------------- pagination */
.ui-pagination { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem; margin-top: 1rem; font-size: 0.875rem; }
.ui-pagination-summary { margin: 0; color: var(--ui-muted); }
.ui-pagination-pages { display: flex; flex-wrap: wrap; gap: 0.25rem; list-style: none; margin: 0; padding: 0; }
.ui-pagination-pages a, .ui-pagination-pages span { display: inline-block; min-width: 2.2rem; padding: 0.4rem 0.6rem; text-align: center; border-radius: 0.45rem; border: 1px solid var(--ui-border); background: #fff; color: #1e293b; }
.ui-pagination-pages a:hover { border-color: var(--ui-primary); color: var(--ui-primary); }
.ui-pagination-pages .is-current { background: var(--ui-primary); color: #fff; border-color: var(--ui-primary); font-weight: 700; }
.ui-pagination-pages .is-disabled { color: #94a3b8; }
.ui-pagination-pages .ui-pagination-gap { border-color: transparent; background: transparent; }
.ui-pagination-size { display: flex; gap: 0.4rem; align-items: center; margin: 0; }
.ui-pagination-size select { padding: 0.3rem 0.5rem; border: 1px solid #cbd5e1; border-radius: 0.4rem; font: inherit; }

/* ---------------------------------------------------------------- empty / skeleton */
.ui-empty { text-align: center; padding: 2.5rem 1rem; color: var(--ui-muted); }
.ui-empty svg { color: #94a3b8; margin-bottom: 0.5rem; }
.ui-empty-title { font-weight: 700; color: #334155; margin: 0 0 0.3rem; }
.ui-empty-text { margin: 0 0 1rem; }
.ui-skeleton { background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 37%, #f1f5f9 63%); background-size: 400% 100%; animation: ui-shimmer 1.4s ease infinite; border-radius: 0.4rem; height: 1rem; }
@keyframes ui-shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---------------------------------------------------------------- auth pages */
.ui-auth-card { max-width: 28rem; margin: 0 auto; }
.ui-auth-card .ui-page-title { text-align: center; }
.ui-auth-card .ui-page-sub { text-align: center; margin-bottom: 1.5rem; }
.ui-auth-alt { text-align: center; margin-top: 1.25rem; font-size: 0.9rem; color: var(--ui-muted); }
.ui-auth-alt a, .ui-link { color: var(--ui-primary); font-weight: 600; }
.ui-password-wrap { position: relative; }
.ui-password-toggle { position: absolute; right: 0.4rem; top: 50%; transform: translateY(-50%); background: none; border: 0; color: var(--ui-primary); font-weight: 600; font-size: 0.8rem; cursor: pointer; padding: 0.3rem 0.4rem; }

/* ---------------------------------------------------------------- notifications page */
.ui-notif-list { list-style: none; margin: 0; padding: 0; }
.ui-notif-list li { display: flex; gap: 1rem; justify-content: space-between; align-items: flex-start; padding: 1rem 1.1rem; border-bottom: 1px solid #f1f5f9; }
.ui-notif-list li.is-unread { background: #f0f7ff; }
.ui-notif-list li:last-child { border-bottom: 0; }

/* ---------------------------------------------------------------- tabs */
.ui-tabs { display: flex; gap: 0.25rem; border-bottom: 1px solid var(--ui-border); margin-bottom: 1.25rem; overflow-x: auto; }
.ui-tabs a { padding: 0.65rem 1rem; color: var(--ui-muted); font-weight: 600; border-bottom: 2px solid transparent; white-space: nowrap; }
.ui-tabs a[aria-current="page"], .ui-tabs a.is-active { color: var(--ui-primary); border-bottom-color: var(--ui-primary); }

/* ---------------------------------------------------------------- thread */
.ui-thread { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.75rem; }
.ui-thread-item { border: 1px solid var(--ui-border); border-radius: 0.6rem; padding: 0.85rem 1rem; background: #fff; }
.ui-thread-item.is-note { background: #fffbeb; border-color: #fde68a; }
.ui-thread-item.is-reply { background: #f0f7ff; border-color: #bfdbfe; }
.ui-thread-item.is-status { background: #f8fafc; font-size: 0.85rem; color: var(--ui-muted); }
.ui-thread-meta { font-size: 0.78rem; color: var(--ui-muted); margin-bottom: 0.35rem; }
.ui-prewrap { white-space: pre-wrap; word-break: break-word; }

/* ---------------------------------------------------------------- error pages */
.ui-error-body { background: var(--ui-bg); }
.ui-error { max-width: 34rem; margin: 0 auto; padding: 5rem 1.25rem; text-align: center; }
.ui-error-logo { height: 3rem; margin: 0 auto 2rem; }
.ui-error-code { font-size: 3.5rem; font-weight: 800; margin: 0; background: linear-gradient(to right, var(--ui-primary), var(--ui-accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ui-error h1 { font-size: 1.6rem; margin: 0.5rem 0 0.75rem; }
.ui-error p { color: var(--ui-muted); }
.ui-error-ref code { background: #e2e8f0; padding: 0.15rem 0.4rem; border-radius: 0.3rem; }
.ui-error-debug { text-align: left; background: #0f172a; color: #e2e8f0; padding: 1rem; border-radius: 0.5rem; overflow-x: auto; font-size: 0.8rem; }

@media (prefers-reduced-motion: reduce) {
  .ui-toast, .ui-toast.is-leaving, .ui-modal-backdrop, .ui-skeleton { animation: none !important; }
  .ui-btn, .ui-input { transition: none !important; }
}