/* ═══════════════════════════════════════════════════════════════════════════
   Ekam — UI primitives v1
   Shared by the app shell, auth and marketing. Loaded AFTER legacy sheets so
   it wins. Everything is prefixed `ui-` (new) or targets existing shell
   classes deliberately (marked "shell refinement").
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Base ──────────────────────────────────────────────────────────────── */
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-feature-settings: "ss01", "cv11";
  text-rendering: optimizeLegibility;
}
::selection { background: var(--signature-200); color: var(--ink); }

/* One focus style everywhere — visible, ≥3:1, never clipped by radius. */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* Skip link — first tab stop on every page */
.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 10000;
  padding: 10px 16px; border-radius: var(--r-md);
  background: var(--ink); color: var(--surface);
  font-weight: 600; font-size: var(--text-sm); text-decoration: none;
  transform: translateY(-160%);
  transition: transform var(--dur-2) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

.ui-sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ══════════════════════════════════════════════════════════════════════════
   BUTTONS
   Primary = the one thing to do on this screen. Secondary = everything else.
   ══════════════════════════════════════════════════════════════════════════ */
.ui-btn {
  --btn-h: 40px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--btn-h); padding: 0 16px;
  border-radius: var(--r-md); border: 1px solid transparent;
  font: 600 var(--text-base)/1 var(--font); letter-spacing: -0.005em;
  text-decoration: none; white-space: nowrap; cursor: pointer; user-select: none;
  transition: background-color var(--dur-1) var(--ease-out),
              border-color var(--dur-1) var(--ease-out),
              box-shadow var(--dur-1) var(--ease-out),
              transform var(--dur-1) var(--ease-out), color var(--dur-1);
}
.ui-btn:active:not(:disabled) { transform: translateY(1px) scale(0.99); }
.ui-btn:disabled, .ui-btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.ui-btn i[data-lucide], .ui-btn svg.lucide { width: 16px; height: 16px; }

.ui-btn--primary {
  background: var(--signature); color: var(--on-signature);
  box-shadow: 0 1px 0 rgba(255,255,255,.18) inset, 0 1px 2px rgba(11,11,18,.18);
}
.ui-btn--primary:hover { background: var(--signature-700); color: var(--on-signature); }

.ui-btn--secondary {
  background: var(--surface); color: var(--ink); border-color: var(--border-strong);
  box-shadow: var(--shadow-xs);
}
.ui-btn--secondary:hover { background: var(--gray-50); border-color: var(--gray-400); color: var(--ink); }

.ui-btn--ghost { background: transparent; color: var(--gray-600); }
.ui-btn--ghost:hover { background: var(--gray-100); color: var(--ink); }

.ui-btn--inverse { background: var(--ink); color: var(--surface); }
.ui-btn--inverse:hover { background: var(--gray-800); color: var(--surface); }

.ui-btn--lg    { --btn-h: 48px; padding: 0 22px; font-size: var(--text-md); border-radius: 12px; }
.ui-btn--sm    { --btn-h: 32px; padding: 0 12px; font-size: var(--text-sm); }
.ui-btn--block { width: 100%; }
.ui-btn--icon  { width: var(--btn-h); padding: 0; }

/* Loading: keep width stable (no layout shift), swap label for spinner */
.ui-btn.is-loading { position: relative; color: transparent !important; pointer-events: none; }
.ui-btn.is-loading::after {
  content: ""; position: absolute; width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid currentColor; border-color: var(--on-signature) var(--on-signature) transparent transparent;
  animation: ui-spin .7s linear infinite;
}
.ui-btn--secondary.is-loading::after { border-color: var(--ink) var(--ink) transparent transparent; }
@keyframes ui-spin { to { transform: rotate(360deg); } }

/* Touch: every control ≥ 44px on coarse pointers */
@media (pointer: coarse) {
  .ui-btn, .ui-btn--sm { min-height: var(--tap); }
  .ui-btn--icon { width: var(--tap); }
}

/* ══════════════════════════════════════════════════════════════════════════
   FORMS — label above, hint below, error replaces hint. Validated on blur.
   ══════════════════════════════════════════════════════════════════════════ */
.ui-form { display: grid; gap: 18px; }
.ui-row  { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
@media (max-width: 420px) { .ui-row { grid-template-columns: 1fr; } }

.ui-field { display: grid; gap: 6px; min-width: 0; }
.ui-label {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  font-size: var(--text-sm); font-weight: 550; color: var(--ink);
}
.ui-label-aside { font-weight: 500; color: var(--gray-500); font-size: var(--text-xs); }
.ui-label-aside a { color: var(--signature-text); text-decoration: none; }
.ui-label-aside a:hover { text-decoration: underline; }

.ui-input,
.ui-field input:not([type="checkbox"]):not([type="radio"]),
.ui-field select,
.ui-field textarea {
  width: 100%; min-height: 44px; padding: 10px 14px;
  font: 400 var(--text-md)/1.4 var(--font);   /* 16px = no iOS zoom */
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--border-strong); border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  transition: border-color var(--dur-1), box-shadow var(--dur-1);
  -webkit-appearance: none; appearance: none;
}
.ui-field textarea { min-height: 120px; resize: vertical; }
.ui-field ::placeholder { color: var(--gray-400); }
.ui-field input:hover, .ui-field textarea:hover, .ui-field select:hover { border-color: var(--gray-400); }
.ui-field input:focus, .ui-field textarea:focus, .ui-field select:focus {
  outline: none; border-color: var(--signature); box-shadow: var(--shadow-glow);
}
.ui-field [aria-invalid="true"] { border-color: var(--danger); }
.ui-field [aria-invalid="true"]:focus { box-shadow: 0 0 0 4px var(--danger-soft); }
.ui-field.is-valid input { border-color: var(--success); }

.ui-hint  { font-size: var(--text-xs); color: var(--gray-500); line-height: 1.45; }
.ui-error {
  display: flex; align-items: flex-start; gap: 6px;
  font-size: var(--text-xs); font-weight: 500; color: var(--danger-text); line-height: 1.45;
}
.ui-error:empty { display: none; }
.ui-error::before {
  content: ""; flex: none; width: 14px; height: 14px; margin-top: 1px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4M12 16h.01'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4M12 16h.01'/%3E%3C/svg%3E") center/contain no-repeat;
}
.ui-field:has(.ui-error:not(:empty)) .ui-hint { display: none; }

/* Input with trailing action (password reveal) */
.ui-input-wrap { position: relative; }
.ui-input-wrap input { padding-right: 52px !important; }
.ui-input-action {
  position: absolute; top: 50%; right: 4px; transform: translateY(-50%);
  width: 40px; height: 36px; display: grid; place-items: center;
  border: 0; border-radius: var(--r-sm); background: transparent; color: var(--gray-500); cursor: pointer;
}
.ui-input-action:hover { background: var(--gray-100); color: var(--ink); }
.ui-input-action i[data-lucide], .ui-input-action svg { width: 18px; height: 18px; }

/* Password strength meter */
.ui-strength { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; margin-top: 2px; }
.ui-strength span { height: 4px; border-radius: 2px; background: var(--gray-200); transition: background var(--dur-2); }
.ui-strength[data-score="1"] span:nth-child(-n+1) { background: var(--danger); }
.ui-strength[data-score="2"] span:nth-child(-n+2) { background: var(--warning); }
.ui-strength[data-score="3"] span:nth-child(-n+3) { background: var(--success); }
.ui-strength[data-score="4"] span { background: var(--success); }

/* Form-level alert (server errors) */
.ui-alert {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 12px 14px; border-radius: var(--r-md);
  font-size: var(--text-sm); line-height: 1.5;
  background: var(--danger-soft); color: var(--danger-text);
  border: 1px solid color-mix(in srgb, var(--danger) 25%, transparent);
}
.ui-alert i[data-lucide], .ui-alert svg { width: 18px; height: 18px; flex: none; margin-top: 1px; }

/* ══════════════════════════════════════════════════════════════════════════
   TOASTS — one region, polite live announcements, auto-dismiss (pauses on hover)
   ══════════════════════════════════════════════════════════════════════════ */
.ui-toasts {
  position: fixed; z-index: 9999; top: 16px; right: 16px; left: auto;
  display: flex; flex-direction: column; gap: 8px;
  width: min(380px, calc(100vw - 32px)); pointer-events: none;
}
.ui-toast {
  pointer-events: auto;
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 12px 12px 14px; border-radius: 12px;
  background: var(--surface-raised); color: var(--ink);
  border: 1px solid var(--border); box-shadow: var(--shadow-lg);
  font-size: var(--text-sm); line-height: 1.45;
  animation: ui-toast-in var(--dur-3) var(--ease-out);
}
.ui-toast.is-leaving { opacity: 0; transform: translateY(-6px); transition: all var(--dur-2) var(--ease-out); }
.ui-toast-icon { flex: none; width: 18px; height: 18px; margin-top: 1px; }
.ui-toast--success .ui-toast-icon { color: var(--success); }
.ui-toast--error   .ui-toast-icon { color: var(--danger); }
.ui-toast--warning .ui-toast-icon { color: var(--warning); }
.ui-toast--info    .ui-toast-icon { color: var(--signature); }
.ui-toast-msg { flex: 1; padding-top: 1px; }
.ui-toast-close {
  flex: none; width: 28px; height: 28px; margin: -4px -4px -4px 0;
  display: grid; place-items: center; border: 0; border-radius: 8px;
  background: transparent; color: var(--gray-500); cursor: pointer;
}
.ui-toast-close:hover { background: var(--gray-100); color: var(--ink); }
.ui-toast-close svg, .ui-toast-close i { width: 16px; height: 16px; }
@keyframes ui-toast-in { from { opacity: 0; transform: translateY(-8px) scale(.98); } }
@media (max-width: 640px) {
  .ui-toasts { top: auto; bottom: calc(80px + env(safe-area-inset-bottom)); right: 16px; left: 16px; width: auto; }
}

/* ══════════════════════════════════════════════════════════════════════════
   CARDS / BADGES / KBD
   ══════════════════════════════════════════════════════════════════════════ */
.ui-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); box-shadow: var(--shadow-xs);
}
.ui-badge {
  display: inline-flex; align-items: center; gap: 6px; height: 22px; padding: 0 8px;
  border-radius: var(--r-full); font-size: var(--text-xs); font-weight: 600;
  background: var(--gray-100); color: var(--gray-600);
}
.ui-badge--success { background: var(--success-soft); color: var(--success-text); }
.ui-badge--brand   { background: var(--signature-50); color: var(--signature-text); }
.ui-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.ui-kbd {
  display: inline-flex; align-items: center; justify-content: center; min-width: 20px; height: 20px;
  padding: 0 5px; border-radius: 5px; border: 1px solid var(--border);
  background: var(--surface); color: var(--gray-500);
  font: 500 11px/1 var(--font-mono); box-shadow: 0 1px 0 var(--border);
}

/* ══════════════════════════════════════════════════════════════════════════
   APP SHELL — refinements on top of components.css (shell refinement)
   ══════════════════════════════════════════════════════════════════════════ */
.wh-topbar {
  height: var(--topbar-h);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
          backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.wh-topbar-title { font-weight: 650; font-size: var(--text-base); letter-spacing: -0.01em; color: var(--ink); }
.wh-topbar-toggle, .hub-theme-toggle, .wh-back {
  min-width: 40px; min-height: 40px; border-radius: var(--r-md);
}
.wh-main { padding: var(--s-6); max-width: 1440px; width: 100%; margin: 0 auto; box-sizing: border-box; }
@media (max-width: 1023px) { .wh-main { padding: var(--s-4); } }

/* Sidebar sits on a permanently dark dock — fix label colours so they
   never inherit theme-flipped greys (was 3.7:1 in dark mode). */
.sidebar .sb-item { color: rgba(255, 255, 255, 0.64); font-size: var(--text-sm); min-height: 38px; border-radius: var(--r-sm); }
.sidebar .sb-item:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.sidebar .sb-item.active { color: #fff; background: rgba(129, 138, 248, 0.18); }
.sidebar .sb-section-label { color: rgba(255, 255, 255, 0.40); letter-spacing: .06em; }
.sidebar .sb-signout button { color: rgba(255, 255, 255, 0.64); }
@media (pointer: coarse) { .sidebar .sb-item { min-height: var(--tap); } }

/* Topbar search / command trigger — the fastest way to any page */
.wh-search {
  display: inline-flex; align-items: center; gap: 10px;
  height: 36px; padding: 0 8px 0 12px; margin-left: auto;
  width: min(340px, 32vw);
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--surface-sunken); color: var(--gray-500);
  font: 500 var(--text-sm)/1 var(--font); cursor: pointer; text-align: left;
  transition: border-color var(--dur-1), background var(--dur-1);
}
.wh-search:hover { border-color: var(--border-strong); background: var(--surface); color: var(--gray-600); }
.wh-search i[data-lucide], .wh-search svg.lucide { width: 16px; height: 16px; }
.wh-search-label { flex: 1; }
.wh-search-keys { display: inline-flex; gap: 3px; }
.wh-topbar-actions { margin-left: 12px; }
@media (max-width: 1023px) {
  .wh-search { width: 40px; height: 40px; padding: 0; justify-content: center; margin-left: auto; background: transparent; border-color: transparent; }
  .wh-search-label, .wh-search-keys { display: none; }
}

/* ══════════════════════════════════════════════════════════════════════════
   COMMAND PALETTE (⌘K / Ctrl+K / "/")
   ══════════════════════════════════════════════════════════════════════════ */
.cmdk[hidden] { display: none; }
.cmdk {
  position: fixed; inset: 0; z-index: 10001;
  display: flex; align-items: flex-start; justify-content: center;
  padding: max(10vh, 24px) 16px 16px;
  background: var(--overlay);
  animation: cmdk-fade var(--dur-2) var(--ease-out);
}
.cmdk-dialog {
  width: min(620px, 100%); max-height: min(560px, 80vh);
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface-raised); color: var(--ink);
  border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-xl);
  animation: cmdk-pop var(--dur-3) var(--ease-out);
}
.cmdk-head { display: flex; align-items: center; gap: 10px; padding: 0 16px; border-bottom: 1px solid var(--border); }
.cmdk-head i[data-lucide], .cmdk-head svg.lucide { width: 18px; height: 18px; color: var(--gray-500); }
.cmdk-input {
  flex: 1; height: 56px; border: 0; background: transparent; outline: none;
  font: 450 var(--text-md)/1 var(--font); color: var(--ink);
}
.cmdk-input::placeholder { color: var(--gray-400); }
.cmdk-list { list-style: none; margin: 0; padding: 8px; overflow-y: auto; overscroll-behavior: contain; }
.cmdk-group { padding: 10px 10px 6px; font-size: 11px; font-weight: 600; color: var(--gray-500); text-transform: uppercase; letter-spacing: .06em; }
.cmdk-item {
  display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 0 10px;
  border-radius: 10px; color: var(--ink); text-decoration: none; cursor: pointer;
  font-size: var(--text-base); font-weight: 500;
}
.cmdk-item-icon {
  width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; flex: none;
  background: var(--gray-100); color: var(--gray-600);
}
.cmdk-item-icon svg { width: 16px; height: 16px; }
.cmdk-item-hint { margin-left: auto; font-size: var(--text-xs); color: var(--gray-500); }
.cmdk-item[aria-selected="true"] { background: var(--signature-50); }
.cmdk-item[aria-selected="true"] .cmdk-item-icon { background: var(--signature); color: #fff; }
.cmdk-empty { padding: 32px 16px; text-align: center; color: var(--gray-500); font-size: var(--text-sm); }
.cmdk-foot {
  display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--border);
  font-size: var(--text-xs); color: var(--gray-500); background: var(--surface-soft);
}
.cmdk-foot span { display: inline-flex; align-items: center; gap: 6px; }
@media (max-width: 640px) { .cmdk-foot { display: none; } .cmdk { padding-top: 16px; } }
@keyframes cmdk-fade { from { opacity: 0; } }
@keyframes cmdk-pop  { from { opacity: 0; transform: translateY(-8px) scale(.98); } }

/* ══════════════════════════════════════════════════════════════════════════
   Reduced motion — respect the OS setting everywhere
   ══════════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important; animation-iteration-count: 1 !important;
    transition-duration: 1ms !important; scroll-behavior: auto !important;
  }
}