/* ============================================================
   shared-buttons.css — canonical button system, ALL roles
   (Admin / Office / Staff / Student), ALL pages.

   Two class conventions exist in the templates (.btn-primary and
   .btn--primary). Both are supported here and produce the exact
   same look, so no markup/business logic had to change.

   Linked via includes/header.php on every authenticated page,
   AFTER each page's own stylesheet, so these rules win the
   cascade and every button looks and behaves identically
   regardless of which page-specific CSS ran first.
   ============================================================ */

/* ---------- Base ---------- */
.btn,
[class*="btn--"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  padding: 0.5rem 1.1rem;
  height: 38px;
  position: relative;
  overflow: hidden;
  transition: background 0.18s ease, color 0.18s ease,
              border-color 0.18s ease, box-shadow 0.18s ease,
              transform 0.18s ease;
}
.btn:active,
[class*="btn--"]:active { transform: translateY(0) !important; }

/* ---------- Sizes ---------- */
.btn-sm, .btn--sm {
  font-size: 0.8rem;
  padding: 0.35rem 0.8rem;
  height: 32px;
}
.btn-xs, .btn--xs {
  font-size: 0.74rem;
  padding: 0.28rem 0.65rem;
  height: 28px;
  border-radius: var(--radius-xs);
}
/* Icon-only variant — square, no label. Used for actions like
   "Refresh" that are clear from the icon alone; keeps aria-label
   / title for accessibility since the visible text is removed. */
.btn-icon-only {
  width: 38px;
  padding: 0;
  gap: 0;
}
.btn-icon-only.btn-sm, .btn-icon-only.btn--sm {
  width: 32px;
  padding: 0;
}
.btn-icon-only.btn-xs, .btn-icon-only.btn--xs {
  width: 28px;
  padding: 0;
}
.btn-icon-only.btn-lg, .btn-icon-only.btn--lg {
  width: 46px;
  padding: 0;
}

.btn-lg, .btn--lg {
  font-size: 0.95rem;
  padding: 0.7rem 1.5rem;
  height: 46px;
}
.btn-block, .btn--block, .btn--full {
  display: flex;
  width: 100%;
}

/* ---------- Primary (Save / Submit / main CTA) ---------- */
.btn-primary, .btn--primary {
  background: var(--brand-primary);
  color: var(--white);
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-red);
}
.btn-primary::before, .btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.14) 0%, transparent 55%);
  pointer-events: none;
}
.btn-primary:hover, .btn--primary:hover {
  background: var(--brand-primary-dark);
  border-color: var(--brand-primary-dark);
  box-shadow: 0 6px 24px rgba(102,8,16,0.40);
  transform: translateY(-1px);
}
.btn-primary:active, .btn--primary:active { transform: translateY(0); }

/* ---------- Ghost / Cancel / secondary ---------- */
.btn-ghost, .btn--ghost, .btn-outline-light {
  background: var(--white);
  color: var(--ink-mid);
  border-color: var(--smoke);
}
.btn-ghost:hover, .btn--ghost:hover, .btn-outline-light:hover {
  background: var(--mist);
  border-color: var(--ink-faint);
  transform: translateY(-1px);
}

/* ---------- Outline (brand-colored border, white fill) ---------- */
.btn-outline, .btn--outline {
  background: var(--white);
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}
.btn-outline:hover, .btn--outline:hover {
  background: var(--primary-soft);
  border-color: var(--brand-primary-dark);
  color: var(--brand-primary-dark);
}

/* ---------- Secondary (neutral, low-emphasis) ---------- */
/* --secondary is the BEM-style alias; several pages (parent dashboard,
   student dashboard) already emit it, so both spellings resolve here. */
.btn-secondary, .btn--secondary {
  background: var(--light-gray);
  color: var(--gray);
  border-color: var(--border);
}
.btn-secondary:hover, .btn--secondary:hover { background: var(--mist); }

/* ---------- Add / create action ---------- */
.btn-add {
  background: var(--white);
  color: var(--brand-primary);
  border: 1.5px solid var(--brand-primary);
  box-shadow: none;
}
.btn-add::before { display: none; }
.btn-add:hover {
  background: var(--primary-soft);
  color: var(--brand-primary-dark);
  border-color: var(--brand-primary-dark);
}
.btn-add svg { color: currentColor; }

/* ---------- Success ---------- */
.btn-success, .btn--success {
  background: var(--success);
  color: var(--white);
  border-color: var(--success);
}
.btn-success:hover, .btn--success:hover,
.btn-success:focus, .btn--success:focus {
  background: #256a29;
  border-color: #256a29;
}
.btn-success-solid { background: var(--success); color: var(--white); border-color: var(--success); }
.btn-success-solid:hover { background: #256a29; border-color: #256a29; }

/* ---------- Warning / Edit ---------- */
.btn-warning, .btn--warning {
  background: var(--warning-light);
  color: var(--warning);
  border-color: var(--warning-border);
}
.btn-warning:hover, .btn--warning:hover { background: #fef0c7; }

/* ---------- Danger / Delete ---------- */
.btn-danger, .btn--danger {
  background: var(--danger-light);
  color: var(--danger);
  border-color: rgba(198,40,40,0.25);
}
.btn-danger:hover, .btn--danger:hover,
.btn-danger:focus, .btn--danger:focus {
  background: var(--danger);
  color: var(--white);
  border-color: var(--danger);
  transform: translateY(-1px);
}

/* ---------- Google sign-in ---------- */
.btn--google {
  background: var(--white);
  color: var(--ink);
  border-color: var(--border);
}
.btn--google:hover { background: var(--light-gray); }
.btn--google:active { background: var(--mist); }
.btn--google svg { flex-shrink: 0; }

/* ---------- Loading / disabled ---------- */
.btn--loading .btn__text { opacity: 0.6; }
.btn--loading .btn__spinner { display: block; }
.btn[disabled], .btn--disabled,
.btn:disabled, [class*="btn--"][disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none !important;
  transform: none !important;
}

/* ---------- Focus (accessible everywhere) ---------- */
.btn:focus-visible,
[class*="btn--"]:focus-visible,
.btn-sm:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

.btn svg { flex-shrink: 0; }

/* ============================================================
   Icon-only Edit / Delete row actions — CANONICAL, app-wide.
   One pencil icon = Edit, one trash icon = Delete, everywhere
   a list row has these actions (service items, staff, events,
   requirements, windows, etc.). Loaded on every office/admin
   page via header.php, so any page-local .btn-icon-action rules
   should be removed in favor of this shared definition.
   ============================================================ */
.btn-icon-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: var(--radius-sm, 8px);
  border: 1.5px solid var(--smoke);
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition);
  box-shadow: none;
}
.btn-icon-action svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.btn-icon-action--edit { color: var(--ink); border-color: var(--smoke); }
.btn-icon-action--edit:hover {
  background: var(--mist);
  border-color: var(--ink-faint, #bbb);
  color: var(--ink);
}
.btn-icon-action--delete {
  color: var(--danger, #c62828);
  border-color: rgba(198, 40, 40, 0.35);
}
.btn-icon-action--delete:hover {
  background: var(--danger-light, #fbe0e0);
  border-color: var(--danger, #c62828);
  color: var(--danger, #c62828);
}
.btn-icon-action:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--red-soft, rgba(102, 8, 16, 0.12));
}
.btn-icon-action + .btn-icon-action { margin-left: 0.35rem; }
td.td-actions, div.td-actions { white-space: nowrap; }
div.td-actions { display: flex; align-items: center; gap: 0.35rem; }