/* Shared base UI primitives for all SeptemberTotSeptember apps.
   Load AFTER s2s-shell.css (which handles the top header + .app-nav),
   BEFORE any app-specific stylesheet. */

:root {
  --s2s-bg:           #f0f2f5;
  --s2s-surface:      #ffffff;
  --s2s-border:       #e5e7eb;
  --s2s-border-soft:  #f3f4f6;

  --s2s-text:         #1a1a1a;
  --s2s-text-muted:   #6b7280;
  --s2s-text-strong:  #1a1a2e;

  --s2s-primary:      #2563eb;
  --s2s-primary-hover:#1d4ed8;
  --s2s-primary-soft: #e0e7ff;

  --s2s-danger:       #b91c1c;
  --s2s-danger-soft:  #fee2e2;
  --s2s-warning:      #b45309;
  --s2s-warning-soft: #fef3c7;
  --s2s-success:      #15803d;
  --s2s-success-soft: #dcfce7;

  --s2s-radius:       8px;
  --s2s-radius-sm:    6px;
  --s2s-shadow-sm:    0 1px 3px rgba(0,0,0,.08);
  --s2s-shadow-md:    0 4px 12px rgba(0,0,0,.12);
  --s2s-shadow-lg:    0 8px 24px rgba(0,0,0,.18);

  --s2s-font:         system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--s2s-font);
  background: var(--s2s-bg);
  color: var(--s2s-text);
  min-height: 100vh;
  line-height: 1.45;
}

a { color: var(--s2s-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--s2s-text-strong); margin: 0; }

/* Layout helper — opt-in centered container. */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}
.container-narrow { max-width: 720px; margin: 0 auto; padding: 2rem; }

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .55rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--s2s-radius-sm);
  font-family: inherit;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background .12s, box-shadow .12s, transform .04s;
  background: var(--s2s-surface);
  color: var(--s2s-text-strong);
  border-color: var(--s2s-border);
}
.btn:hover { background: var(--s2s-border-soft); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn-primary   { background: var(--s2s-primary); color: #fff; border-color: var(--s2s-primary); }
.btn-primary:hover { background: var(--s2s-primary-hover); border-color: var(--s2s-primary-hover); }

.btn-secondary { /* same as default .btn */ }

.btn-danger    { background: var(--s2s-danger-soft); color: var(--s2s-danger); border-color: var(--s2s-danger-soft); }
.btn-danger:hover { background: #fecaca; }

.btn-ghost     { background: transparent; border-color: transparent; color: var(--s2s-primary); }
.btn-ghost:hover { background: var(--s2s-primary-soft); }

.btn-sm  { padding: .35rem .65rem; font-size: .8rem; }
.btn-lg  { padding: .75rem 1.4rem; font-size: 1rem; }

/* ── Forms ──────────────────────────────────────────────────────────────── */
.form-row {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  margin-bottom: .9rem;
}
.form-row label { font-size: .8rem; font-weight: 500; color: #374151; }
.form-row .hint { font-size: .75rem; color: var(--s2s-text-muted); }

.input, .form-row input[type="text"], .form-row input[type="email"],
.form-row input[type="password"], .form-row input[type="number"],
.form-row input[type="date"], .form-row select, .form-row textarea {
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid var(--s2s-border);
  border-radius: var(--s2s-radius-sm);
  font-family: inherit;
  font-size: .9rem;
  background: var(--s2s-surface);
  color: var(--s2s-text);
}
.input:focus, .form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: 2px solid var(--s2s-primary);
  outline-offset: -1px;
  border-color: transparent;
}
.form-row textarea { min-height: 80px; resize: vertical; }

.inline-form {
  display: flex;
  gap: .5rem;
  align-items: center;
}
.inline-form .input { flex: 1; }

.form-error { color: var(--s2s-danger); font-size: .8rem; margin-top: .25rem; }

/* ── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--s2s-surface);
  border-radius: var(--s2s-radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--s2s-shadow-sm);
}
.card-link {
  display: block;
  background: var(--s2s-surface);
  border-radius: var(--s2s-radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--s2s-shadow-sm);
  color: inherit;
  text-decoration: none;
  transition: box-shadow .15s, transform .15s;
}
.card-link:hover { box-shadow: var(--s2s-shadow-md); transform: translateY(-2px); text-decoration: none; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

/* ── Page headers ───────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}
.page-header h1 { font-size: 1.4rem; font-weight: 600; }
.page-header .subtitle { color: var(--s2s-text-muted); font-size: .9rem; }

/* ── Lists ──────────────────────────────────────────────────────────────── */
.list { list-style: none; padding: 0; margin: 0; }
.list-item {
  background: var(--s2s-surface);
  border-radius: var(--s2s-radius);
  padding: .9rem 1.1rem;
  margin-bottom: .5rem;
  box-shadow: var(--s2s-shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.list-item .actions { display: flex; gap: .4rem; }

/* ── Modals ─────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: grid;
  place-items: center;
  z-index: 1000;
  padding: 1rem;
}
.modal {
  background: var(--s2s-surface);
  border-radius: 10px;
  padding: 1.5rem;
  max-width: 460px;
  width: 100%;
  box-shadow: var(--s2s-shadow-lg);
}
.modal h3 { font-size: 1rem; font-weight: 600; margin: 0 0 .25rem; }
.modal .modal-sub { font-size: .8rem; color: var(--s2s-text-muted); margin-bottom: 1rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: .5rem; margin-top: 1rem; }

/* ── Badges & status ────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  background: var(--s2s-border-soft);
  color: var(--s2s-text-muted);
}
.badge-primary { background: var(--s2s-primary-soft); color: var(--s2s-primary-hover); }
.badge-success { background: var(--s2s-success-soft); color: var(--s2s-success); }
.badge-warning { background: var(--s2s-warning-soft); color: var(--s2s-warning); }
.badge-danger  { background: var(--s2s-danger-soft);  color: var(--s2s-danger); }

/* ── Notices ────────────────────────────────────────────────────────────── */
.notice {
  padding: .7rem .9rem;
  border-radius: var(--s2s-radius-sm);
  font-size: .85rem;
  margin-bottom: 1rem;
}
.notice-info    { background: var(--s2s-primary-soft); color: var(--s2s-primary-hover); }
.notice-warning { background: var(--s2s-warning-soft); color: var(--s2s-warning); }
.notice-danger  { background: var(--s2s-danger-soft);  color: var(--s2s-danger); }
.notice-success { background: var(--s2s-success-soft); color: var(--s2s-success); }

/* ── Helpers ────────────────────────────────────────────────────────────── */
.muted { color: var(--s2s-text-muted); }
.text-sm { font-size: .85rem; }
.text-xs { font-size: .75rem; }
.spacer { flex: 1; }
[hidden] { display: none !important; }

/* Tijdelijke rode flash — gebruikt door TODO-pagina om een element op
   een doelpagina kort op te laten lichten (via ?focus=...). */
@keyframes vv-flash-anim {
  0%   { box-shadow: 0 0 0 0 rgba(239,68,68,.7), 0 0 0 0 rgba(239,68,68,.3); }
  50%  { box-shadow: 0 0 0 4px rgba(239,68,68,.7), 0 0 0 12px rgba(239,68,68,.25); }
  100% { box-shadow: 0 0 0 0 rgba(239,68,68,0), 0 0 0 0 rgba(239,68,68,0); }
}
.vv-flash {
  animation: vv-flash-anim 1s ease-in-out 0s 3;
  outline: 2px solid #ef4444;
  outline-offset: 2px;
  border-radius: var(--s2s-radius-sm);
}