/*
 * WireFlow — Shared Component Layer
 * Depends on tokens.css being loaded first.
 * Provides the canonical implementation of each primitive.
 * Pages may add local overrides; they should NOT re-declare these.
 *
 * Components:
 *   .wf-btn            Base button
 *   .wf-btn--primary   Filled accent
 *   .wf-btn--ghost     Outlined
 *   .wf-btn--danger    Red destructive
 *   .wf-btn--sm / --lg Size modifiers
 *   .wf-input          Text/email/password input
 *   .wf-select         <select>
 *   .wf-modal-bg       Full-screen overlay backdrop
 *   .wf-modal          Modal card
 *   .wf-modal__head    Modal header row
 *   .wf-modal__body    Modal scrollable body
 *   .wf-modal__foot    Modal footer (actions)
 *   .wf-badge          Inline status chip
 *   .wf-badge--*       Color variants
 *   .wf-toast          Single toast notification
 *   .wf-empty          Empty / zero-state block
 *   .wf-skeleton       Loading placeholder shimmer
 *   .wf-close-btn      Standardised ✕ button
 */

/* ══════════════════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════════════════ */

.wf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--wf-sp-2);
  padding: 9px var(--wf-sp-4);
  border-radius: var(--wf-r-md);
  border: 1px solid var(--wf-border-hi);
  background: var(--wf-surface);
  color: var(--wf-text);
  font-family: var(--wf-font-sans);
  font-size: var(--wf-fs-md);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--wf-tr-base), background var(--wf-tr-base),
              filter var(--wf-tr-base), transform var(--wf-tr-fast),
              box-shadow var(--wf-tr-base);
  -webkit-user-select: none;
  user-select: none;
}
.wf-btn:hover  { border-color: var(--wf-text); }
.wf-btn:active { transform: translateY(1px); }
.wf-btn:disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

.wf-btn--primary {
  background: var(--wf-accent);
  border-color: var(--wf-accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(40, 90, 200, 0.28);
}
.wf-btn--primary:hover { filter: brightness(1.08); border-color: var(--wf-accent); }

.wf-btn--ghost {
  background: transparent;
  border-color: var(--wf-border-hi);
  color: var(--wf-text);
}
.wf-btn--ghost:hover { background: color-mix(in srgb, var(--wf-text) 6%, transparent); }

.wf-btn--danger {
  background: transparent;
  border-color: var(--wf-danger);
  color: var(--wf-danger);
}
.wf-btn--danger:hover { background: color-mix(in srgb, var(--wf-danger) 10%, transparent); }

.wf-btn--sm { padding: 5px 12px; font-size: var(--wf-fs-sm); border-radius: var(--wf-r-sm); }
.wf-btn--lg { padding: 12px 22px; font-size: var(--wf-fs-lg); }
.wf-btn--block { width: 100%; }

/* ══════════════════════════════════════════════════════════
   INPUTS & SELECTS
══════════════════════════════════════════════════════════ */

.wf-input,
.wf-select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--wf-border-hi);
  border-radius: var(--wf-r-md);
  background: var(--wf-surface-2);
  color: var(--wf-text);
  font-family: var(--wf-font-sans);
  font-size: var(--wf-fs-md);
  outline: none;
  transition: border-color var(--wf-tr-base);
}
.wf-input:focus,
.wf-select:focus { border-color: var(--wf-accent); }
.wf-input::placeholder { color: var(--wf-text-muted); }

.wf-field { margin-bottom: var(--wf-sp-4); }
.wf-field label {
  display: block;
  font-size: var(--wf-fs-sm);
  font-weight: 600;
  color: var(--wf-text-dim);
  margin-bottom: var(--wf-sp-1);
}

/* ══════════════════════════════════════════════════════════
   MODAL SHELL
══════════════════════════════════════════════════════════ */

.wf-modal-bg {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: var(--wf-sp-4);
}
.wf-modal-bg[hidden] { display: none; }

.wf-modal {
  background: var(--wf-surface);
  border: 1px solid var(--wf-border-hi);
  border-radius: var(--wf-r-lg);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  width: 480px;
  max-width: 94vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.wf-modal__head {
  display: flex;
  align-items: center;
  gap: var(--wf-sp-3);
  padding: var(--wf-sp-4) var(--wf-sp-5);
  border-bottom: 1px solid var(--wf-border);
  font-size: var(--wf-fs-lg);
  font-weight: 700;
  flex-shrink: 0;
}

.wf-modal__body {
  padding: var(--wf-sp-5);
  overflow-y: auto;
  flex: 1;
}

.wf-modal__foot {
  padding: var(--wf-sp-4) var(--wf-sp-5);
  border-top: 1px solid var(--wf-border);
  display: flex;
  gap: var(--wf-sp-2);
  justify-content: flex-end;
  flex-shrink: 0;
}

/* ── Close button (canonical ✕) ── */
.wf-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--wf-r-sm);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--wf-text-muted);
  margin-left: auto;
  flex-shrink: 0;
  transition: background var(--wf-tr-base), color var(--wf-tr-base);
}
.wf-close-btn:hover { background: var(--wf-surface-2); color: var(--wf-text); }

/* ══════════════════════════════════════════════════════════
   BADGES
══════════════════════════════════════════════════════════ */

.wf-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--wf-r-xl);
  font-size: var(--wf-fs-xs);
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1px solid;
}

.wf-badge--accent  { color: var(--wf-accent);  border-color: var(--wf-border-hi); background: color-mix(in srgb, var(--wf-accent) 12%, transparent); }
.wf-badge--good    { color: var(--wf-good);    border-color: color-mix(in srgb, var(--wf-good) 30%, transparent); background: color-mix(in srgb, var(--wf-good) 10%, transparent); }
.wf-badge--warn    { color: var(--wf-warn);    border-color: color-mix(in srgb, var(--wf-warn) 30%, transparent); background: color-mix(in srgb, var(--wf-warn) 10%, transparent); }
.wf-badge--danger  { color: var(--wf-danger);  border-color: color-mix(in srgb, var(--wf-danger) 30%, transparent); background: color-mix(in srgb, var(--wf-danger) 10%, transparent); }
.wf-badge--muted   { color: var(--wf-text-muted); border-color: var(--wf-border); background: transparent; }

/* ══════════════════════════════════════════════════════════
   EMPTY STATE
══════════════════════════════════════════════════════════ */

.wf-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--wf-sp-3);
  padding: var(--wf-sp-12) var(--wf-sp-6);
  text-align: center;
  color: var(--wf-text-muted);
}
.wf-empty__icon {
  width: 48px;
  height: 48px;
  border: 1px solid var(--wf-border-hi);
  border-radius: var(--wf-r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--wf-accent);
}
.wf-empty__title {
  font-size: var(--wf-fs-lg);
  font-weight: 700;
  color: var(--wf-text);
  margin: 0;
}
.wf-empty__sub {
  font-size: var(--wf-fs-md);
  color: var(--wf-text-dim);
  max-width: 360px;
  line-height: 1.6;
  margin: 0;
}

/* ══════════════════════════════════════════════════════════
   LOADING SKELETON
══════════════════════════════════════════════════════════ */

@keyframes wf-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.wf-skeleton {
  border-radius: var(--wf-r-sm);
  background: linear-gradient(
    90deg,
    var(--wf-surface-2) 25%,
    var(--wf-surface-3) 50%,
    var(--wf-surface-2) 75%
  );
  background-size: 800px 100%;
  animation: wf-shimmer 1.4s infinite linear;
}

/* ══════════════════════════════════════════════════════════
   TOAST (canonical — builder uses toast(), dashboard can too)
══════════════════════════════════════════════════════════ */

.wf-toast-wrap {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}

.wf-toast {
  display: inline-flex;
  align-items: center;
  gap: var(--wf-sp-2);
  padding: 10px 18px;
  border-radius: var(--wf-r-md);
  background: var(--wf-surface-3);
  border: 1px solid var(--wf-border-hi);
  color: var(--wf-text);
  font-size: var(--wf-fs-md);
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: wf-toast-in 0.18s ease;
  pointer-events: auto;
}
.wf-toast--success { border-color: var(--wf-good);   color: var(--wf-good); }
.wf-toast--error   { border-color: var(--wf-danger); color: var(--wf-danger); }
.wf-toast--warn    { border-color: var(--wf-warn);   color: var(--wf-warn); }

@keyframes wf-toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}