/* ==========================================================================
   CREST — design system (ONE token file for the whole app). The DEFAULT theme.
   Dark, minimalist, sharp (0–2px radius), restrained, hospitality. A shade of
   dark (not pure black) + one warm brass accent. Themeable entirely from :root.
   ========================================================================== */
:root {
  /* palette — DARK is the system default */
  --ink: #F4F3EF;              /* strong headings / high-emphasis text (light on dark) */
  --ink-deep: #0F1115;         /* deepest base */
  --surface: #171A21;          /* card / raised surface */
  --surface-muted: #0F1115;    /* page background */
  --surface-sunken: #0B0D11;   /* recessed (inputs, muted pills) */
  --border: rgba(255, 255, 255, .16);
  --border-strong: rgba(255, 255, 255, .30);
  --text: #E8E8E4;
  --text-muted: rgba(232, 232, 228, .66);
  --accent: #C9A227;           /* brass — the brand interactive accent */
  --accent-ink: #1C1703;       /* text on the brass button */
  --accent-weak: rgba(201, 162, 39, .16);
  --gold: #C9A227;
  --danger: #E8838E;           /* brightened so pill/icon/border text clears AA on dark */
  --danger-weak: rgba(232, 131, 142, .18);
  --success: #56C596;          /* brightened to read on dark */
  --success-weak: rgba(86, 197, 150, .16);
  --warn: #E0B84B;
  --warn-weak: rgba(224, 184, 75, .16);
  --signature-paper: #F4F3EF;  /* ink-on-paper backing for signatures (intentionally light) */

  /* spacing scale (rem) */
  --s1: .25rem; --s2: .5rem; --s3: .75rem; --s4: 1rem;
  --s5: 1.5rem; --s6: 2rem; --s7: 3rem; --s8: 4rem;

  /* radius — crisp edges everywhere */
  --radius: 2px;
  --radius-pill: 999px;

  /* type */
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Menlo, Consolas, monospace;
  --font-signature: "Segoe Script", "Brush Script MT", "Snell Roundhand", cursive;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --fs-xs: .75rem; --fs-sm: .8125rem; --fs-md: .9375rem;
  --fs-lg: 1.125rem; --fs-xl: clamp(1.25rem, 1rem + 1.2vw, 1.6rem);
  --fs-2xl: clamp(1.6rem, 1.2rem + 2vw, 2.25rem);
  --lh: 1.55;

  /* motion */
  --dur-in: 180ms;
  --dur-out: 120ms;
  --ease: cubic-bezier(.2, .7, .2, 1);

  /* elevation */
  --ring: 0 0 0 2px var(--accent-weak), 0 0 0 3px var(--accent);
  --pop: 0 12px 38px rgba(0, 0, 0, .5);

  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; color-scheme: dark; }
body {
  margin: 0; min-height: 100vh;
  font-family: var(--font);
  font-size: var(--fs-md);
  line-height: var(--lh);
  color: var(--text);
  background: var(--surface-muted);
  background-image: radial-gradient(115% 70% at 50% -12%, #181b23 0%, transparent 55%);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.2; margin: 0; color: var(--ink); font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
p { margin: 0; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--font-mono); }
.text-muted { color: var(--text-muted); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: var(--fs-xs); color: var(--text-muted); font-weight: 600; }

/* a11y */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--surface); color: var(--text); border: 1px solid var(--border-strong);
  padding: var(--s2) var(--s4);
}
.skip-link:focus { left: var(--s3); top: var(--s3); }
:focus-visible { outline: none; box-shadow: var(--ring); border-radius: var(--radius); }

/* layout primitives */
.app-main { min-height: 60vh; }
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding: clamp(var(--s4), 3vw, var(--s7)) clamp(var(--s4), 4vw, var(--s6)); }
.stack > * + * { margin-top: var(--s4); }
.stack-sm > * + * { margin-top: var(--s2); }
.stack-lg > * + * { margin-top: var(--s6); }
.row { display: flex; align-items: center; }
.row.gap { gap: var(--s3); flex-wrap: wrap; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); flex-wrap: wrap; }
.rule { border: none; border-top: 1px solid var(--border); margin: var(--s2) 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(var(--s4), 3vw, var(--s6));
}

/* ---- buttons — modern, minimalist, subtle motion (the system default) ----- */
.btn {
  --bg: var(--surface); --fg: var(--ink); --bd: var(--border-strong);
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  font: inherit; font-weight: 600; font-size: var(--fs-sm); line-height: 1.1;
  padding: .62em 1.15em; border: 1px solid var(--bd); border-radius: var(--radius);
  background: var(--bg); color: var(--fg); cursor: pointer; white-space: nowrap; will-change: transform;
  transition: transform 150ms var(--ease), background-color 150ms var(--ease),
              border-color 150ms var(--ease), color 150ms var(--ease), opacity 150ms var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.99); }
.btn:disabled { opacity: 1; cursor: not-allowed; transform: none; --bg: var(--surface-sunken); --fg: var(--text-muted); --bd: var(--border); }
.btn-primary { --bg: var(--accent); --fg: var(--accent-ink); --bd: var(--accent); }
.btn-primary:hover { --bg: #d8b23a; --bd: #d8b23a; }
.btn-danger { --bg: var(--danger); --fg: #1a0608; --bd: var(--danger); }
.btn-danger:hover { --bg: #e7808b; --bd: #e7808b; }
.btn-ghost { --bg: transparent; --fg: var(--ink); --bd: var(--border-strong); }
.btn-ghost:hover { --bg: rgba(255, 255, 255, .06); --bd: var(--text-muted); }
.btn-sm { padding: .42em .8em; font-size: var(--fs-xs); }
.btn-lg { font-size: clamp(1rem, .95rem + .3vw, 1.15rem); padding: .9em 2.2em; }
.btn-block { width: 100%; }

/* forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); gap: var(--s4); }
.field { display: flex; flex-direction: column; gap: var(--s2); font-size: var(--fs-sm); }
.field > span { font-weight: 600; color: var(--text); }
.field .hint { font-weight: 400; color: var(--text-muted); font-size: var(--fs-xs); }
input, select, textarea {
  font: inherit; font-size: var(--fs-md); color: var(--text);
  background: var(--surface-sunken); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: .6em .7em; width: 100%;
  transition: border-color var(--dur-out) var(--ease), box-shadow var(--dur-out) var(--ease);
}
input::placeholder, textarea::placeholder { color: rgba(232, 232, 228, .55); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }
input[aria-invalid="true"], .field.invalid input { border-color: var(--danger); box-shadow: 0 0 0 3px var(--danger-weak); }
option { color: var(--text); background: var(--surface); }   /* dark popup (color-scheme: dark) */
label.check { display: flex; align-items: center; gap: var(--s2); }
label.check input { width: auto; }

/* pills / badges */
.pill { display: inline-flex; align-items: center; gap: .4em; font-size: var(--fs-xs); font-weight: 600; padding: .2em .6em; border-radius: var(--radius); border: 1px solid var(--border-strong); }
.pill-ok { color: var(--success); background: var(--success-weak); border-color: transparent; }
.pill-muted { color: var(--text-muted); background: var(--surface-sunken); border-color: var(--border); }
.pill-warn { color: var(--warn); background: var(--warn-weak); border-color: transparent; }
.pill-danger { color: var(--danger); background: var(--danger-weak); border-color: transparent; }

/* data table -> stacked cards on narrow widths */
.data-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.data-table th, .data-table td { text-align: left; padding: var(--s3); border-bottom: 1px solid var(--border); }
.data-table th { color: var(--text-muted); font-weight: 600; font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .06em; }
.data-table tbody tr { transition: background-color var(--dur-out) var(--ease); }
.data-table tbody tr:hover { background: rgba(255, 255, 255, .04); }
.table-actions { display: flex; gap: var(--s2); flex-wrap: wrap; }

.table-as-cards { overflow-x: auto; -webkit-overflow-scrolling: touch; }
@media (max-width: 820px) {
  .table-as-cards { overflow-x: visible; }
  .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
  .data-table thead { display: none; }
  .data-table tr { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: var(--s3); padding: var(--s2); background: var(--surface-sunken); }
  .data-table td { border: none; display: flex; justify-content: space-between; gap: var(--s4); padding: var(--s2) var(--s3); min-width: 0; overflow-wrap: anywhere; }
  .data-table td::before { content: attr(data-label); font-weight: 600; color: var(--text-muted); flex: 0 0 auto; }
  .data-table td:last-child { justify-content: flex-start; flex-wrap: wrap; }
  .data-table td:last-child::before { display: none; }
  .table-actions { flex-wrap: wrap; width: 100%; }
}

/* avatar */
.avatar { width: 2.25rem; height: 2.25rem; border-radius: var(--radius-pill); object-fit: cover; background: var(--accent-weak); display: inline-flex; align-items: center; justify-content: center; color: var(--accent); font-weight: 700; border: 1px solid var(--border); overflow: hidden; }
.avatar-lg { width: 7rem; height: 7rem; font-size: 2rem; }

/* app nav (post-login) */
.appnav { position: sticky; top: 0; z-index: 50; background: rgba(15, 17, 21, .82); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.appnav-inner { max-width: var(--maxw); margin-inline: auto; padding: var(--s2) clamp(var(--s4), 4vw, var(--s6)); display: flex; align-items: center; gap: var(--s4); }
.appnav-brand { font-weight: 700; color: var(--ink); letter-spacing: -.01em; }
.appnav-brand:hover { text-decoration: none; }
.appnav-links { display: flex; align-items: center; gap: var(--s4); margin-left: auto; }
.appnav-links > a { display: inline-flex; align-items: center; gap: .5em; color: var(--text-muted); font-size: var(--fs-sm); font-weight: 600; padding: var(--s1) 0; border-bottom: 2px solid transparent; }
.appnav-links > a:hover { color: var(--ink); text-decoration: none; }
.navic { width: 1.05em; height: 1.05em; flex: 0 0 auto; }
.appnav-links > a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.appnav-user { display: inline-flex; align-items: center; gap: var(--s2); }
.appnav-user .avatar { width: 1.9rem; height: 1.9rem; font-size: var(--fs-xs); }
.appnav-username { max-width: 12rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.appnav-logout { margin: 0; }
.appnav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: 1px solid var(--border-strong); border-radius: var(--radius); padding: .5rem; margin-left: auto; cursor: pointer; }
.appnav-toggle span { width: 18px; height: 2px; background: var(--ink); display: block; }

@media (max-width: 720px) {
  .appnav-toggle { display: inline-flex; }
  .appnav-links {
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 18rem);
    flex-direction: column; align-items: flex-start; gap: var(--s4);
    background: var(--surface); border-left: 1px solid var(--border);
    padding: calc(var(--s7) + env(safe-area-inset-top)) calc(var(--s5) + env(safe-area-inset-right)) var(--s5) var(--s5);
    margin: 0; overflow-y: auto; -webkit-overflow-scrolling: touch;
    transform: translateX(100%); transition: transform var(--dur-in) var(--ease);
  }
  .appnav-links[data-open="true"] { transform: none; box-shadow: var(--pop); }
  .appnav-username { max-width: none; }
}

/* top progress bar on navigation */
#nav-progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; background: var(--accent); z-index: 90; opacity: 0; transition: width 180ms var(--ease), opacity 200ms var(--ease); }
#nav-progress.active { opacity: 1; }

/* staggered reveal */
[data-reveal] > * { opacity: 0; transform: translateY(8px); animation: reveal var(--dur-in) var(--ease) forwards; }
[data-reveal] > *:nth-child(1) { animation-delay: 30ms; }
[data-reveal] > *:nth-child(2) { animation-delay: 70ms; }
[data-reveal] > *:nth-child(3) { animation-delay: 110ms; }
[data-reveal] > *:nth-child(4) { animation-delay: 150ms; }
[data-reveal] > *:nth-child(5) { animation-delay: 190ms; }
[data-reveal] > *:nth-child(n+6) { animation-delay: 220ms; }
@keyframes reveal { to { opacity: 1; transform: none; } }

/* auth screens (login/register/logout/awaiting) — same dark theme as the landing */
.auth-wrap { min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: var(--s5); }
.auth-card { width: 100%; max-width: 24rem; }
.auth-card h1 { font-family: var(--font-serif); font-weight: 500; font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.1rem); }
.auth-back { display: inline-flex; align-items: center; gap: .4em; align-self: flex-start; }

/* ==========================================================================
   GLOBAL MODAL + TOAST — the single canonical feedback pattern.
   ========================================================================== */
.modal-scrim {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center; padding: var(--s4);
  background: rgba(5, 6, 8, .58);
  backdrop-filter: blur(3px);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur-out) var(--ease), visibility var(--dur-out) var(--ease);
}
.modal-scrim[data-open="true"] { opacity: 1; visibility: visible; transition-duration: var(--dur-in); }

.modal-card {
  position: relative; width: 100%; max-width: 26rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: var(--s5);
  transform: translateY(6px) scale(.96); opacity: 0;
  transition: transform var(--dur-out) var(--ease), opacity var(--dur-out) var(--ease);
  box-shadow: var(--pop);
}
.modal-scrim[data-open="true"] .modal-card { transform: none; opacity: 1; transition-duration: var(--dur-in); }

.modal-accent { position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--danger); }
.modal-accent[data-tone="success"] { background: var(--success); }
.modal-accent[data-tone="info"] { background: var(--accent); }

.modal-head { display: flex; align-items: center; gap: var(--s3); margin-bottom: var(--s3); }
.modal-icon { flex: 0 0 auto; width: 1.75rem; height: 1.75rem; color: var(--danger); }
.modal-icon svg { width: 100%; height: 100%; }
.modal-accent[data-tone="success"] ~ .modal-head .modal-icon { color: var(--success); }
.modal-title { font-size: var(--fs-lg); }
.modal-msg { color: var(--text); margin-bottom: var(--s2); }
.modal-ref { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-muted); margin-bottom: var(--s4); }
.modal-actions { display: flex; justify-content: flex-end; gap: var(--s2); }

/* native dialog (create/edit forms) */
.app-dialog { border: 1px solid var(--border); border-radius: var(--radius); padding: 0; max-width: 42rem; width: calc(100vw - 2rem); background: var(--surface); color: var(--text); box-shadow: var(--pop); }
.app-dialog::backdrop { background: rgba(5, 6, 8, .58); backdrop-filter: blur(3px); }
.app-dialog > form { padding: clamp(var(--s4), 3vw, var(--s6)); }
.app-dialog[open] { animation: dialogin var(--dur-in) var(--ease); }
@keyframes dialogin { from { opacity: 0; transform: translateY(6px) scale(.985); } to { opacity: 1; transform: none; } }

/* global busy lock — native <dialog> (top layer) + animated spinner; blocks ALL
   interaction during DB-write actions until the request settles (showBusy/hideBusy). */
.busy-dialog { border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(var(--s5), 4vw, var(--s6));
  min-width: 12rem; background: var(--surface); color: var(--text); box-shadow: var(--pop); }
.busy-dialog::backdrop { background: rgba(5, 6, 8, .62); backdrop-filter: blur(3px); }
.busy-dialog[open] { animation: dialogin var(--dur-in) var(--ease); }
.busy-inner { display: flex; flex-direction: column; align-items: center; gap: var(--s3); text-align: center; }
.busy-spinner { width: 2.5rem; height: 2.5rem; border-radius: 50%;
  border: 3px solid var(--border-strong); border-top-color: var(--accent); animation: busyspin .7s linear infinite; }
.busy-msg { margin: 0; color: var(--text); font-weight: 600; font-size: var(--fs-sm); letter-spacing: .01em; }
@keyframes busyspin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .busy-spinner { animation-duration: 1.6s; } }

/* toasts */
.toast-wrap { position: fixed; right: calc(var(--s4) + env(safe-area-inset-right)); bottom: calc(var(--s4) + env(safe-area-inset-bottom)); z-index: 210; display: flex; flex-direction: column; gap: var(--s2); max-width: min(22rem, calc(100vw - 2rem)); }
.toast {
  background: var(--surface); color: var(--text); padding: var(--s3) var(--s4);
  border: 1px solid var(--border); border-left: 2px solid var(--accent);
  border-radius: var(--radius); font-size: var(--fs-sm); box-shadow: var(--pop);
  transform: translateY(8px); opacity: 0;
  transition: transform var(--dur-in) var(--ease), opacity var(--dur-in) var(--ease);
}
.toast[data-show="true"] { transform: none; opacity: 1; }
.toast[data-type="error"] { border-left-color: var(--danger); }
.toast[data-type="success"] { border-left-color: var(--success); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-delay: 0ms !important; transition-duration: .001ms !important; }
  .modal-card { transform: none; }
  [data-reveal] > * { opacity: 1; transform: none; }
}