/* ============================================================================
   MedBridge Design System — Components
   Reusable classes built on colors_and_type.css tokens.
   Requires: colors_and_type.css + Hanken Grotesk + Lucide.
   ============================================================================ */

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--fg-1);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Universal visible focus (WCAG 2.4.7) */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---- ICONS --------------------------------------------------------------- */
.icon { width: 20px; height: 20px; stroke-width: 1.75; flex: none; }
.icon-sm { width: 16px; height: 16px; stroke-width: 1.75; flex: none; }
.icon-lg { width: 24px; height: 24px; stroke-width: 1.75; flex: none; }
[data-lucide] { stroke-width: 1.75; }

/* ============================================================================
   BUTTONS
   ============================================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 18px;
  font-family: inherit; font-size: var(--text-body); font-weight: var(--weight-semi);
  line-height: 1; border-radius: var(--radius-md); border: 1.5px solid transparent;
  cursor: pointer; white-space: nowrap; user-select: none;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.btn:active { transform: translateY(0.5px) scale(0.99); }
.btn .icon, .btn .icon-sm { width: 18px; height: 18px; }

.btn-primary { background: var(--brand-600); color: #fff; }
.btn-primary:hover { background: var(--brand-700); }

.btn-secondary { background: var(--teal-600); color: #fff; }
.btn-secondary:hover { filter: brightness(0.93); }

.btn-outline { background: #fff; color: var(--brand-600); border-color: var(--brand-600); }
.btn-outline:hover { background: var(--brand-50); }

.btn-outline-gray { background: #fff; color: var(--n-700); border-color: var(--border-strong); }
.btn-outline-gray:hover { background: var(--n-50); border-color: var(--n-400); }

.btn-ghost { background: var(--n-100); color: var(--n-700); }
.btn-ghost:hover { background: var(--n-200); }

.btn-danger { background: var(--red-700); color: #fff; }
.btn-danger:hover { filter: brightness(0.92); }

.btn-block { width: 100%; }
.btn-sm { height: 34px; padding: 0 12px; font-size: var(--text-sm); }
.btn-lg { height: 48px; padding: 0 24px; font-size: var(--text-body-lg); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Icon-only button */
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-md);
  background: var(--n-100); color: var(--n-600); border: none; cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
  position: relative;
}
.btn-icon:hover { background: var(--n-200); }

/* ============================================================================
   BADGES  (status pills)
   ============================================================================ */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  height: 23px; padding: 0 10px 0 9px;
  font-size: var(--text-2xs); font-weight: var(--weight-semi); line-height: 1;
  border-radius: var(--radius-pill); white-space: nowrap;
}
.badge::before { content:""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: none; }
.badge.no-dot::before { display: none; }
.badge-success  { background: var(--green-bg);  color: var(--green-600); }
.badge-pending  { background: var(--amber-bg);  color: var(--amber-700); }
.badge-cancelled{ background: var(--red-bg);    color: var(--red-700); }
.badge-active   { background: var(--brand-50);  color: var(--brand-600); }
.badge-info     { background: var(--purple-bg); color: var(--purple-700); }
.badge-neutral  { background: var(--n-100);     color: var(--n-500); }
.badge-teal     { background: var(--teal-bg);   color: var(--teal-600); }

/* ============================================================================
   CARDS
   ============================================================================ */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
}
.card-pad { padding: var(--space-6); }
.card-hover { transition: box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); cursor: pointer; }
.card-hover:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.card-accent { overflow: hidden; }
.card-accent::before {
  content:""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent-strip, var(--brand-600));
}
.card-accent-top::before { left: 0; right: 0; top: 0; bottom: auto; width: auto; height: 4px; }

/* ============================================================================
   FORM FIELDS
   ============================================================================ */
.field { display: flex; flex-direction: column; gap: 7px; }
.field-label { font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--n-700); }
.input, .select, .textarea {
  width: 100%; height: 44px; padding: 0 14px;
  font-family: inherit; font-size: var(--text-body); color: var(--fg-1);
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.textarea { height: auto; padding: 12px 14px; min-height: 88px; resize: vertical; line-height: 1.5; }
.input::placeholder, .textarea::placeholder { color: var(--n-400); }
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--brand-500); box-shadow: var(--shadow-focus);
}
.input-group { position: relative; }
.input-group .input { padding-left: 40px; }
.input-group .input-icon {
  position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  color: var(--n-400); pointer-events: none;
}
.field-hint { font-size: var(--text-xs); color: var(--fg-3); }
.field-error .input { border-color: var(--red-700); }
.field-error .field-hint { color: var(--red-700); }

/* Checkbox / radio */
.checkbox { width: 18px; height: 18px; border: 1.5px solid var(--border-strong); border-radius: 5px; accent-color: var(--brand-600); }

/* Toggle switch */
.toggle { position: relative; width: 44px; height: 24px; border-radius: var(--radius-pill);
  background: var(--n-300); border: none; cursor: pointer; transition: background var(--dur-base) var(--ease-out); flex: none; }
.toggle::after { content:""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px;
  border-radius: 50%; background: #fff; box-shadow: var(--shadow-sm); transition: left var(--dur-base) var(--ease-out); }
.toggle[aria-checked="true"] { background: var(--brand-600); }
.toggle[aria-checked="true"]::after { left: 22px; }

/* Search box (inline, top nav) */
.search {
  display: flex; align-items: center; gap: 9px; height: 40px; padding: 0 14px;
  background: var(--n-50); border: 1px solid var(--border); border-radius: var(--radius-md);
  color: var(--n-400); font-size: var(--text-sm); min-width: 280px;
}
.search input { border: none; background: none; outline: none; font-family: inherit;
  font-size: var(--text-sm); color: var(--fg-1); width: 100%; }

/* ============================================================================
   AVATARS
   ============================================================================ */
.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; color: #fff; font-weight: var(--weight-semi);
  background: var(--brand-600); flex: none; overflow: hidden;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-sm { width: 36px; height: 36px; font-size: 13px; }
.avatar-md { width: 44px; height: 44px; font-size: 15px; }
.avatar-lg { width: 64px; height: 64px; font-size: 22px; }
.avatar-xl { width: 80px; height: 80px; font-size: 28px; }

/* ============================================================================
   TABLES
   ============================================================================ */
.table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.table thead th {
  text-align: left; padding: 12px 16px; background: var(--n-50);
  font-size: var(--text-2xs); font-weight: var(--weight-semi); text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--n-600); border-bottom: 1px solid var(--border);
}
.table tbody td { padding: 16px; border-bottom: 1px solid var(--n-100); color: var(--fg-2); vertical-align: middle; }
.table tbody tr:hover { background: var(--n-50); }
.table tbody td.strong { color: var(--fg-1); font-weight: var(--weight-medium); }
.table .link { color: var(--brand-600); font-weight: var(--weight-medium); cursor: pointer; }

/* ============================================================================
   TABS
   ============================================================================ */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); }
.tab {
  appearance: none; background: none; border: none; cursor: pointer;
  padding: 12px 18px; font-family: inherit; font-size: var(--text-body);
  font-weight: var(--weight-medium); color: var(--n-500); position: relative;
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-out);
}
.tab:hover { color: var(--n-700); }
.tab[aria-selected="true"] { color: var(--brand-600); font-weight: var(--weight-semi); }
.tab[aria-selected="true"]::after {
  content:""; position: absolute; left: 12px; right: 12px; bottom: -1px; height: 2px;
  background: var(--brand-600); border-radius: 2px;
}

/* Pill tabs (segmented) */
.pill-tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--n-100); border-radius: var(--radius-md); }
.pill-tab { appearance: none; border: none; background: none; cursor: pointer;
  padding: 7px 16px; border-radius: var(--radius-sm); font-family: inherit;
  white-space: nowrap;
  font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--n-500); }
.pill-tab[aria-selected="true"] { background: #fff; color: var(--brand-600); box-shadow: var(--shadow-xs); }

/* ============================================================================
   STAT CARD
   ============================================================================ */
.stat { padding: 18px 20px; }
.stat-label { font-size: var(--text-2xs); font-weight: var(--weight-medium);
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--n-500); }
.stat-value { font-size: 30px; font-weight: var(--weight-bold); color: var(--fg-1);
  line-height: 1.1; margin-top: 6px; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: var(--text-xs); margin-top: 8px; display: flex; align-items: center; gap: 5px; }

/* ============================================================================
   ALERT / INFO BANNERS
   ============================================================================ */
.alert { display: flex; gap: 12px; padding: 14px 16px; border-radius: var(--radius-md);
  border: 1px solid transparent; font-size: var(--text-sm); }
.alert .icon { margin-top: 1px; }
.alert-info  { background: var(--brand-50);  border-color: #BFDBFE; color: var(--n-800); }
.alert-info .icon { color: var(--brand-600); }
.alert-warn  { background: var(--amber-bg);  border-color: #FDE68A; color: var(--n-800); }
.alert-warn .icon { color: var(--amber-700); }
.alert-success { background: var(--green-bg); border-color: #A7F3D0; color: var(--n-800); }
.alert-success .icon { color: var(--green-600); }
.alert-danger { background: var(--red-bg);  border-color: #FECACA; color: var(--n-800); }
.alert-danger .icon { color: var(--red-700); }
.alert-title { font-weight: var(--weight-semi); color: var(--fg-1); }

/* ============================================================================
   DIVIDERS / UTILS
   ============================================================================ */
.divider { height: 1px; background: var(--n-100); border: none; margin: 0; }
.divider-strong { background: var(--border); }
.eyebrow { font-size: var(--text-2xs); font-weight: var(--weight-semi); text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow); color: var(--fg-3); }
.muted { color: var(--fg-3); }
.skeleton { background: linear-gradient(90deg, var(--n-100) 25%, var(--n-200) 37%, var(--n-100) 63%);
  background-size: 400% 100%; animation: shimmer 1.4s ease infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

/* Spinner */
.spinner { width: 22px; height: 22px; border: 2.5px solid var(--n-200);
  border-top-color: var(--brand-600); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }