/*
 * brand-packs / shell.css  —  the house app shell
 *
 * The one dashboard shell every hw-tools tool wears: a slim top bar (identity +
 * account), a collapsible left sidebar (primary nav), and a card content area.
 * The Stripe / WordPress-admin pattern, in Scribe's dark-studio craft.
 *
 * Load order in an app shell:
 *   <link rel="stylesheet" href="brand-base.css">     <!-- shared tokens -->
 *   <link rel="stylesheet" href="brand-<slug>.css">   <!-- the tool's palette -->
 *   <link rel="stylesheet" href="shell.css">          <!-- this file -->
 *
 * Colour comes entirely from the loaded pack (brand-base + brand-<slug>): this
 * file only references tokens, never literal brand colours. One accent per tool
 * is the ONLY saturated thing on screen; everything else is neutral. The markup
 * to pair with this is documented in shell.skeleton.html.
 *
 * House style: UK English, no em dashes.
 */

:root {
  /* Shell tokens, derived from the pack so the shell needs nothing brand-base
     doesn't already give it. Prefixed --sh-* so they never collide with an
     app's own token names. */
  --sh-ink:        var(--color-bg, #0D0F14);
  --sh-surface:    var(--color-surface, #14161D);
  --sh-surface-2:  color-mix(in srgb, var(--color-surface, #14161D) 90%, var(--color-text, #F5F6F8));
  --sh-surface-3:  color-mix(in srgb, var(--color-surface, #14161D) 82%, var(--color-text, #F5F6F8));
  --sh-fog:        var(--color-text, #F5F6F8);
  --sh-muted:      var(--color-muted, #A6AEBC);
  --sh-faint:      color-mix(in srgb, var(--color-muted, #A6AEBC) 68%, var(--color-bg, #0D0F14));
  --sh-rule:       color-mix(in srgb, var(--color-text, #F5F6F8) 13%, transparent);
  --sh-rule-soft:  color-mix(in srgb, var(--color-text, #F5F6F8) 7%, transparent);

  /* Single accent: solid fill from --brand-500, links/marks from the pack --accent. */
  --sh-accent:      var(--brand-500, #6366F1);
  --sh-accent-2:    var(--accent, var(--brand-400, #818CF8));
  --sh-accent-soft: color-mix(in srgb, var(--brand-500, #6366F1) 16%, transparent);
  --sh-on-accent:   #fff;

  --sh-sans:   var(--font-sans, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif);
  --sh-mono:   ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
  --sh-radius: var(--radius-lg, 14px);
  --sh-radius-sm: var(--radius-md, 9px);
  --sh-shadow: var(--shadow-lg, 0 14px 34px rgba(0,0,0,.34));
  --sh-sidebar: 252px;
}

/* ---------- frame ---------- */
.app-shell { min-height: 100vh; display: grid; grid-template-rows: auto 1fr;
  background: var(--sh-ink); color: var(--sh-fog); font-family: var(--sh-sans); }
.app-shell *, .app-shell *::before, .app-shell *::after { box-sizing: border-box; }

.kicker { font-family: var(--sh-mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase; color: var(--sh-faint); }

/* ---------- top bar: identity + account only ---------- */
.topbar { display: flex; align-items: center; gap: 12px; height: 60px; padding: 0 18px;
  background: color-mix(in srgb, var(--sh-surface) 84%, transparent); backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--sh-rule); position: sticky; top: 0; z-index: 20; }
.topbar .spacer { flex: 1; }
.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.logo { width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; flex: none;
  font-weight: 800; font-size: 17px; color: var(--sh-on-accent); letter-spacing: -.03em;
  background: linear-gradient(135deg, var(--sh-accent), color-mix(in srgb, var(--sh-accent) 60%, #000 10%));
  box-shadow: 0 5px 16px color-mix(in srgb, var(--sh-accent) 40%, transparent); }
.wordmark { font-weight: 800; font-size: 19px; letter-spacing: -.02em; color: var(--sh-fog); }
.wordmark .dot { color: var(--sh-accent-2); }
.topbar .kicker { margin-top: 1px; }
.topbar .who { font-size: 13px; color: var(--sh-muted); font-variant-numeric: tabular-nums; }
@media (max-width: 640px) { .topbar .who { display: none; } }

/* account menu (top-right): avatar button -> dropdown. The standard pattern,
   replacing a bare email + sign-out button. */
.acct { position: relative; }
.acct__btn { display: flex; align-items: center; gap: 7px; background: none; border: 0; cursor: pointer;
  padding: 4px 8px 4px 5px; border-radius: 999px; color: var(--sh-muted); }
.acct__btn:hover { background: var(--sh-surface-2); }
.avatar { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; font-size: 13px; color: var(--sh-on-accent);
  background: linear-gradient(135deg, var(--sh-accent), color-mix(in srgb, var(--sh-accent) 60%, #000 10%)); }
.acct__menu { position: absolute; top: 46px; right: 0; min-width: 214px; background: var(--sh-surface);
  border: 1px solid var(--sh-rule); border-radius: 12px; box-shadow: var(--sh-shadow); padding: 6px; z-index: 40; }
.acct__who { padding: 9px 11px 8px; border-bottom: 1px solid var(--sh-rule-soft); margin-bottom: 5px; }
.acct__who .who { display: block; font-size: 13px; color: var(--sh-fog); margin-top: 3px; }
.acct__item { display: block; width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 9px 11px; border-radius: 8px; color: var(--sh-muted); font: inherit; font-size: 14px; }
.acct__item:hover { background: var(--sh-surface-2); color: var(--sh-fog); }

.collapse-btn, .icon-btn { width: 34px; height: 34px; border-radius: 8px; flex: none;
  border: 1px solid var(--sh-rule); background: var(--sh-surface-2); color: var(--sh-muted);
  display: grid; place-items: center; cursor: pointer; }
.collapse-btn:hover, .icon-btn:hover { color: var(--sh-fog); border-color: var(--sh-accent); }

/* ---------- layout: sidebar + content ---------- */
.layout { display: grid; grid-template-columns: var(--sh-sidebar) minmax(0, 1fr); min-height: 0; }
.layout.nav-collapsed { --sh-sidebar: 66px; }

.sidebar { border-right: 1px solid var(--sh-rule); background: var(--sh-surface);
  padding: 14px 12px; display: flex; flex-direction: column; gap: 3px; overflow-y: auto; }
.nav-sec { font-family: var(--sh-mono); font-size: 9.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--sh-faint); padding: 10px 10px 5px; }
.layout.nav-collapsed .nav-sec { opacity: 0; height: 6px; padding: 0; }

/* nav items: work as <a> or <button> so an SPA can reuse its existing controls */
.sidebar-nav { display: flex; flex-direction: column; gap: 3px; }
.sidebar-nav a, .sidebar-nav button { display: flex; align-items: center; gap: 11px; width: 100%;
  padding: 9px 10px; border-radius: 9px; color: var(--sh-muted); text-decoration: none; cursor: pointer;
  font-family: inherit; font-size: 14px; font-weight: 500; text-align: left; background: none; border: 0;
  position: relative; }
.sidebar-nav svg { flex: none; width: 18px; height: 18px; stroke: currentColor; }
.sidebar-nav .lbl { white-space: nowrap; overflow: hidden; }
.layout.nav-collapsed .sidebar-nav a, .layout.nav-collapsed .sidebar-nav button { justify-content: center; padding: 9px; }
.layout.nav-collapsed .sidebar-nav .lbl { display: none; }
.sidebar-nav a:hover, .sidebar-nav button:hover { color: var(--sh-fog); background: var(--sh-surface-2); }
.sidebar-nav a.is-on, .sidebar-nav button.is-on { color: var(--sh-fog); background: var(--sh-accent-soft); }
.sidebar-nav a.is-on::before, .sidebar-nav button.is-on::before { content: ""; position: absolute;
  left: -12px; top: 8px; bottom: 8px; width: 3px; border-radius: 0 3px 3px 0; background: var(--sh-accent); }
.sidebar-nav .badge { margin-left: auto; font-family: var(--sh-mono); font-size: 10px; font-weight: 700;
  background: var(--sh-accent); color: var(--sh-on-accent); border-radius: 8px; padding: 1px 6px; }
.layout.nav-collapsed .sidebar-nav .badge { display: none; }
.sidebar .pushdown { margin-top: auto; }
.sidebar-foot { padding: 10px; font-family: var(--sh-mono); font-size: 10px; color: var(--sh-faint); letter-spacing: .04em; }
.layout.nav-collapsed .sidebar-foot { display: none; }

.content { overflow-y: auto; padding: 26px clamp(18px, 4vw, 40px) 64px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  margin-bottom: 22px; flex-wrap: wrap; }
.page-head h1 { font-size: 24px; margin: 0; letter-spacing: -.02em; }
.page-head p { margin: 5px 0 0; color: var(--sh-muted); font-size: 14px; }

/* ---------- notice banner ---------- */
.notice { display: flex; align-items: center; gap: 10px; padding: 11px 16px; border-radius: 11px;
  margin-bottom: 20px; font-size: 13.5px; color: var(--sh-fog);
  background: color-mix(in srgb, var(--sh-accent) 8%, var(--sh-surface));
  border: 1px solid color-mix(in srgb, var(--sh-accent) 30%, var(--sh-rule)); }
.notice__x { margin-left: auto; background: none; border: 0; color: var(--sh-muted); cursor: pointer; font-size: 16px; line-height: 1; }

/* ---------- cards + sections ---------- */
.sheet { background: var(--sh-surface); border: 1px solid var(--sh-rule); border-radius: var(--sh-radius);
  box-shadow: var(--sh-shadow); overflow: hidden; }
.brandbar { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; padding: 15px 20px;
  border-bottom: 1px solid var(--sh-rule-soft); background: var(--sh-surface-2); }
.section { padding: 22px 20px; border-bottom: 1px solid var(--sh-rule-soft); }
.section:last-child { border-bottom: 0; }
.section__head { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.section__n { font-family: var(--sh-mono); font-size: 12px; font-weight: 700; color: var(--sh-accent-2); }
.section__title { font-size: 17px; font-weight: 700; letter-spacing: -.01em; }
.section__desc { color: var(--sh-muted); font-size: 13.5px; margin: 0 0 14px; }

/* ---------- fields ---------- */
.field { display: block; margin-bottom: 14px; }
.lab { display: block; font-size: 12.5px; color: var(--sh-muted); margin-bottom: 7px; font-weight: 600; }
.lab .opt { color: var(--sh-faint); font-weight: 400; text-transform: none; letter-spacing: 0; }
.shell-input, .app-shell input[type=text], .app-shell input[type=email], .app-shell textarea, .app-shell select {
  width: 100%; font-family: inherit; font-size: 14px; color: var(--sh-fog);
  background: var(--sh-ink); border: 1px solid var(--sh-rule); border-radius: 10px; padding: 11px 13px; }
.app-shell textarea { resize: vertical; min-height: 88px; }
.app-shell input:focus, .app-shell textarea:focus, .app-shell select:focus {
  outline: none; border-color: var(--sh-accent); box-shadow: 0 0 0 3px var(--sh-accent-soft); }

/* ---------- chips ---------- */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { border: 1px solid var(--sh-rule); background: var(--sh-surface-2); color: var(--sh-muted);
  border-radius: 999px; padding: 7px 15px; font-size: 13px; font-weight: 600; cursor: pointer; }
.chip:hover { color: var(--sh-fog); border-color: var(--sh-accent); }
.chip.is-on { background: var(--sh-accent); color: var(--sh-on-accent); border-color: transparent; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 7px; font-family: inherit; font-weight: 600;
  font-size: 13.5px; padding: 9px 15px; border-radius: 9px; border: 1px solid transparent;
  cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn--primary { background: var(--sh-accent); color: var(--sh-on-accent); }
.btn--primary:hover { filter: brightness(1.07); }
.btn--primary:disabled { background: var(--sh-surface-3); color: var(--sh-faint); cursor: default; filter: none; }
.btn--ghost { background: transparent; border-color: var(--sh-rule); color: var(--sh-muted); }
.btn--ghost:hover { color: var(--sh-fog); border-color: var(--sh-accent); background: var(--sh-surface-2); }
.btn--xs, .btn--sm { padding: 6px 11px; font-size: 12.5px; }

/* ---------- sign-in (full screen; the shared /sign-in) ---------- */
.signin { min-height: 100vh; display: grid; place-items: center; padding: 40px 18px; color: var(--sh-fog);
  background: radial-gradient(700px 380px at 50% -6%, var(--sh-accent-soft), transparent 62%), var(--sh-ink); }
.signin__card { width: 100%; max-width: 360px; text-align: center; }
.signin__card .logo { margin: 0 auto 18px; width: 50px; height: 50px; border-radius: 13px; font-size: 24px; }
.signin h1 { font-size: 22px; margin: 0 0 6px; }
.signin__sub { color: var(--sh-muted); font-size: 14px; margin: 0 0 24px; }
.signin .field { text-align: left; }
.signin input.code { text-align: center; letter-spacing: .35em; font-size: 18px; }
.signin .btn--primary { width: 100%; justify-content: center; margin-top: 14px; padding: 12px; }
.signin .hint { color: var(--sh-faint); font-size: 12.5px; margin: 12px 0 0; }
.signin .links { display: flex; justify-content: space-between; margin-top: 14px; }
.signin .links button { background: none; border: 0; color: var(--sh-muted); cursor: pointer; font-size: 12.5px; }
.signin .links button:hover { color: var(--sh-accent-2); }

/* ---------- top-bar search pill (opens the palette) ---------- */
.omni { display: flex; align-items: center; gap: 8px; min-width: 200px; cursor: pointer;
  background: var(--sh-surface-2); border: 1px solid var(--sh-rule); color: var(--sh-faint);
  border-radius: 10px; padding: 7px 10px; font-family: inherit; font-size: 13px; }
.omni:hover { border-color: var(--sh-accent); color: var(--sh-muted); }
.omni svg { width: 15px; height: 15px; flex: none; stroke: currentColor; }
.omni kbd { margin-left: auto; font-family: var(--sh-mono); font-size: 11px; color: var(--sh-muted);
  background: var(--sh-surface); border: 1px solid var(--sh-rule); border-radius: 5px; padding: 1px 6px; }
@media (max-width: 640px) { .omni .lbl, .omni kbd { display: none; } .omni { min-width: 0; } }

/* ---------- command palette (Cmd-K) ---------- */
.cmdk { position: fixed; inset: 0; z-index: 100; display: grid; place-items: start center; padding-top: 14vh; }
.cmdk.hidden { display: none; }
.cmdk__backdrop { position: fixed; inset: 0; background: rgba(5, 6, 10, .6); backdrop-filter: blur(3px); }
.cmdk__panel { position: relative; width: 100%; max-width: 560px; background: var(--sh-surface);
  border: 1px solid var(--sh-rule); border-radius: 14px; box-shadow: var(--sh-shadow); overflow: hidden; }
.cmdk__input { width: 100%; border: 0; background: transparent; color: var(--sh-fog);
  font-family: inherit; font-size: 16px; padding: 16px 18px; border-bottom: 1px solid var(--sh-rule-soft); }
.cmdk__input:focus { outline: none; }
.cmdk__list { list-style: none; margin: 0; padding: 6px; max-height: 44vh; overflow-y: auto; }
.cmdk__item { display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 12px; border-radius: 9px; cursor: pointer; color: var(--sh-muted); font-size: 14px; }
.cmdk__item.is-sel { background: var(--sh-accent-soft); color: var(--sh-fog); }
.cmdk__hint { font-family: var(--sh-mono); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; color: var(--sh-faint); }
.cmdk__empty { padding: 16px; text-align: center; color: var(--sh-faint); font-size: 14px; }
.cmdk__foot { display: flex; gap: 16px; padding: 9px 16px; border-top: 1px solid var(--sh-rule-soft);
  font-family: var(--sh-mono); font-size: 10.5px; color: var(--sh-faint); }

/* collapsed rail: tooltip is the native title set by shell.js */

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  :root { --sh-sidebar: 66px; }
  .layout .sidebar-nav .lbl, .layout .nav-sec { display: none; }
  .sidebar { padding: 12px 8px; }
}
@media (prefers-reduced-motion: no-preference) {
  .sidebar-nav a, .sidebar-nav button, .chip, .btn, .collapse-btn, .icon-btn { transition: background .15s, color .15s, border-color .15s, filter .15s; }
}