/* ============================================================================
   ZENEON POS — Design Language (core)
   Premium, calm, full-screen, touch-first. RTL + LTR. Electron-shell-ready.
   POS is its own design system — NOT the ERP / Demo24 theme.
   Design intent: warm near-black, hairline structure, generous air, one
   restrained accent. Color = meaning (champagne = active, green = commit,
   red = void). Type does the work; almost no borders, lots of space.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* Surfaces — warm near-black, layered softly by elevation */
  --pos-bg:          #0b0b0d;
  --pos-bg-2:        #0f0f12;
  --pos-surface:     #151519;
  --pos-surface-2:   #1b1b20;
  --pos-surface-3:   #232329;
  --pos-elevated:    #18181d;
  --pos-scrim:       rgba(5, 5, 7, 0.72);

  /* Lines — hairlines as alpha, so they read as light not heavy rules */
  --pos-line:        rgba(255, 255, 255, 0.075);
  --pos-line-strong: rgba(255, 255, 255, 0.15);
  --pos-line-faint:  rgba(255, 255, 255, 0.045);

  /* Text — warm off-white scale */
  --pos-text:        #f4f2ec;
  --pos-text-2:      #a8a49a;
  --pos-text-3:      #6e6b63;
  --pos-text-on-accent: #1a1206;

  /* Accent — champagne. Active / selected / focus / brand. Used sparingly. */
  --pos-accent:      #c7a86a;
  --pos-accent-hi:   #ddc28c;
  --pos-accent-soft: rgba(199, 168, 106, 0.12);
  --pos-accent-line: rgba(199, 168, 106, 0.42);

  /* Pay / confirm — refined emerald, the only "go" color */
  --pos-pay:         #2f9468;
  --pos-pay-hi:      #38ad7b;
  --pos-pay-soft:    rgba(47, 148, 104, 0.16);

  /* Void / danger — muted brick */
  --pos-danger:      #cc5d57;
  --pos-danger-hi:   #dd736d;
  --pos-danger-soft: rgba(204, 93, 87, 0.14);

  /* Warning / offline */
  --pos-warn:        #d6a35a;
  --pos-warn-soft:   rgba(214, 163, 90, 0.14);
  --pos-info:        #7fa8b8;

  /* Type — one humanist-geometric family; mono reserved for thermal receipts */
  --pos-font:  'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --pos-mono:  'IBM Plex Mono', ui-monospace, Menlo, monospace; /* @kind font */

  --fs-xs:   12.5px;
  --fs-sm:   14px;
  --fs-base: 16px;
  --fs-md:   18px;
  --fs-lg:   22px;
  --fs-xl:   28px;
  --fs-2xl:  38px;
  --fs-3xl:  52px;
  --fs-4xl:  68px;

  /* Spacing — generous 4px base */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-7: 28px; --sp-8: 32px; --sp-10: 40px; --sp-12: 48px; --sp-16: 64px;

  /* Radius — refined, not bubbly */
  --r-sm: 7px; --r: 10px; --r-lg: 14px; --r-xl: 18px; --r-pill: 999px;

  /* Touch targets */
  --touch-min: 48px;
  --tile-min:  124px;
  --key:       76px;

  /* Elevation — soft, low */
  --shadow-1: 0 1px 0 rgba(255,255,255,0.03) inset;
  --shadow-2: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-modal: 0 32px 80px rgba(0,0,0,0.62);
}

/* ============================================================================
   COLOR SCHEMES — set [data-theme] on <html>. Dark (:root) is the default.
   Only surface/line/text + accent lightness change; structure & type do not.
   Apply/persist via pos.js (setting-color-scheme select). Receipt .paper stays
   physical-paper light in every scheme by design.
   ========================================================================= */

/* LIGHT — warm off-white, dark ink */
:root[data-theme="light"] {
  --pos-bg: #e7e5df; --pos-bg-2: #efede7; --pos-surface: #faf9f5;
  --pos-surface-2: #f1efe9; --pos-surface-3: #e6e3db; --pos-elevated: #ffffff;
  --pos-scrim: rgba(38,36,31,0.42);
  --pos-line: rgba(28,24,16,0.12); --pos-line-strong: rgba(28,24,16,0.24); --pos-line-faint: rgba(28,24,16,0.06);
  --pos-text: #1d1b16; --pos-text-2: #5b574d; --pos-text-3: #8d887c; --pos-text-on-accent: #ffffff;
  --pos-accent: #9a7a36; --pos-accent-hi: #b59247; --pos-accent-soft: rgba(154,122,54,0.14); --pos-accent-line: rgba(154,122,54,0.40);
  --pos-pay: #1f885a; --pos-pay-hi: #239a66; --pos-pay-soft: rgba(31,136,90,0.14);
  --pos-danger: #c0463f; --pos-danger-hi: #d05a52; --pos-danger-soft: rgba(192,70,63,0.12);
  --pos-warn: #b07d28; --pos-warn-soft: rgba(176,125,40,0.14); --pos-info: #3f7d92;
  --shadow-1: 0 1px 0 rgba(255,255,255,0.6) inset;
  --shadow-2: 0 12px 40px rgba(40,36,28,0.16);
  --shadow-modal: 0 32px 80px rgba(40,36,28,0.24);
}
:root[data-theme="light"] .ph { background-image: repeating-linear-gradient(135deg, transparent, transparent 9px, rgba(0,0,0,0.05) 9px, rgba(0,0,0,0.05) 18px); }
:root[data-theme="light"] .select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238d887c' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); }

/* DIMMED — soft mid-dark, lower contrast for long shifts */
:root[data-theme="dimmed"] {
  --pos-bg: #191b1e; --pos-bg-2: #1f2226; --pos-surface: #25292e;
  --pos-surface-2: #2c3036; --pos-surface-3: #353a41; --pos-elevated: #292d33;
  --pos-line: rgba(255,255,255,0.08); --pos-line-strong: rgba(255,255,255,0.16); --pos-line-faint: rgba(255,255,255,0.05);
  --pos-text: #d7dadd; --pos-text-2: #9aa0a7; --pos-text-3: #6b7178;
}

/* HIGH CONTRAST — true black, max legibility, strong rules */
:root[data-theme="contrast"] {
  --pos-bg: #000000; --pos-bg-2: #000000; --pos-surface: #0b0b0b;
  --pos-surface-2: #161616; --pos-surface-3: #242424; --pos-elevated: #0b0b0b;
  --pos-scrim: rgba(0,0,0,0.8);
  --pos-line: rgba(255,255,255,0.30); --pos-line-strong: rgba(255,255,255,0.55); --pos-line-faint: rgba(255,255,255,0.16);
  --pos-text: #ffffff; --pos-text-2: #d6d6d6; --pos-text-3: #a2a2a2;
  --pos-accent: #e6c578; --pos-accent-hi: #f4d790; --pos-accent-soft: rgba(230,197,120,0.18); --pos-accent-line: rgba(230,197,120,0.6);
  --pos-pay: #2fc585; --pos-pay-hi: #3ad694; --pos-pay-soft: rgba(47,197,133,0.2);
  --pos-danger: #ff5d54; --pos-danger-hi: #ff756d; --pos-danger-soft: rgba(255,93,84,0.2);
  --pos-warn: #ffb340; --pos-warn-soft: rgba(255,179,64,0.2);
}

/* GRAY — neutral desaturated mid-gray */
:root[data-theme="gray"] {
  --pos-bg: #292b2d; --pos-bg-2: #303335; --pos-surface: #383b3e;
  --pos-surface-2: #414549; --pos-surface-3: #4d5156; --pos-elevated: #3c4043;
  --pos-line: rgba(255,255,255,0.10); --pos-line-strong: rgba(255,255,255,0.2); --pos-line-faint: rgba(255,255,255,0.06);
  --pos-text: #eceef0; --pos-text-2: #aeb3b7; --pos-text-3: #7e848a;
}

/* ---- Reset --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
/* Theme-swap guard: suppress transitions while [data-theme] flips so no
   property gets stranded mid-transition (esp. in throttled/background tabs). */
.pos-no-transition, .pos-no-transition * { transition: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--pos-font);
  font-size: var(--fs-base);
  line-height: 1.5;
  letter-spacing: -0.006em;
  color: var(--pos-text);
  background: var(--pos-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
  user-select: none;
}
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
button { cursor: pointer; border: none; background: none; }
table { border-collapse: collapse; width: 100%; }
h1,h2,h3,h4,p { margin: 0; }
::selection { background: var(--pos-accent-soft); }

/* Tabular figures for any numeric value — refined, no monospace look */
.num, .mono {
  font-variant-numeric: tabular-nums lining-nums;
  font-feature-settings: 'tnum' 1, 'lnum' 1;
}
.num { letter-spacing: 0; }

/* Scrollbars — thin, quiet */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--pos-line-strong); border-radius: var(--r-pill); border: 3px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.22); background-clip: content-box; }
*::-webkit-scrollbar-track { background: transparent; }

/* ============================================================================
   SEALED SHELL
   ========================================================================= */
.pos-shell {
  position: fixed; inset: 0;
  display: grid;
  grid-template-rows: 68px 1fr;
  background: var(--pos-bg-2);
}
.pos-topbar {
  display: flex; align-items: center; gap: var(--sp-4);
  padding: 0 var(--sp-5);
  background: var(--pos-surface);
  border-bottom: 1px solid var(--pos-line);
  height: 68px;
}
.pos-topbar__brand {
  display: flex; align-items: center; gap: var(--sp-3);
  font-weight: 600; font-size: var(--fs-md); letter-spacing: -0.01em; white-space: nowrap;
}
.pos-mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(155deg, var(--pos-accent-hi), var(--pos-accent));
  color: var(--pos-text-on-accent); font-weight: 700; font-size: 17px;
  box-shadow: var(--shadow-1);
}
.pos-topbar__sep { width: 1px; height: 30px; background: var(--pos-line); }
.pos-topbar__ctx { color: var(--pos-text-2); font-size: var(--fs-sm); font-weight: 500; white-space: nowrap; }
.pos-topbar__ctx b { color: var(--pos-text); font-weight: 600; }
.pos-topbar__spacer { flex: 1; }
.pos-topbar__status { display: flex; align-items: center; gap: var(--sp-2); }

/* Status chips */
.pos-chip {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  height: 38px; padding: 0 var(--sp-4);
  background: transparent; border: 1px solid var(--pos-line);
  border-radius: var(--r-pill); font-size: var(--fs-sm); color: var(--pos-text-2);
  white-space: nowrap; font-weight: 500;
}
.pos-chip b { color: var(--pos-text); font-weight: 600; }
.pos-chip__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--pos-text-3); }
.pos-chip--ok    .pos-chip__dot { background: var(--pos-pay-hi); box-shadow: 0 0 0 4px var(--pos-pay-soft); }
.pos-chip--warn  .pos-chip__dot { background: var(--pos-warn); box-shadow: 0 0 0 4px var(--pos-warn-soft); }
.pos-chip--off   .pos-chip__dot { background: var(--pos-danger); box-shadow: 0 0 0 4px var(--pos-danger-soft); }

/* Burger + menu */
.pos-burger {
  width: 48px; height: 48px; border-radius: var(--r);
  display: grid; place-items: center;
  background: transparent; border: 1px solid var(--pos-line);
  color: var(--pos-text); transition: background .15s, border-color .15s;
}
.pos-burger:hover { background: var(--pos-surface-2); border-color: var(--pos-line-strong); }
.pos-burger svg { width: 22px; height: 22px; }

.pos-menu { position: fixed; inset: 0; z-index: 60; display: none; }
.pos-menu[data-open="true"] { display: block; }
.pos-menu__scrim { position: absolute; inset: 0; background: var(--pos-scrim); }
.pos-menu__panel {
  position: absolute; inset-inline-start: 0; top: 0; bottom: 0;
  width: 380px; max-width: 86vw;
  background: var(--pos-elevated);
  border-inline-end: 1px solid var(--pos-line);
  box-shadow: var(--shadow-modal);
  display: flex; flex-direction: column;
  animation: menuIn .2s cubic-bezier(.2,.8,.2,1);
}
[dir="rtl"] .pos-menu__panel { animation: menuInRtl .2s cubic-bezier(.2,.8,.2,1); }
@keyframes menuIn { from { transform: translateX(-16px); } }
@keyframes menuInRtl { from { transform: translateX(16px); } }
.pos-menu__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--sp-6); border-bottom: 1px solid var(--pos-line);
}
.pos-menu__who { display: flex; align-items: center; gap: var(--sp-3); }
.pos-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--pos-surface-3); display: grid; place-items: center;
  font-weight: 600; color: var(--pos-text);
}
.pos-menu__who small { display: block; color: var(--pos-text-3); font-size: var(--fs-xs); margin-top: 2px; }
.pos-menu__list { flex: 1; padding: var(--sp-3); overflow-y: auto; }
.pos-menu__item {
  display: flex; align-items: center; gap: var(--sp-4);
  width: 100%; text-align: start; padding: var(--sp-4);
  border-radius: var(--r); color: var(--pos-text); font-size: var(--fs-md); font-weight: 500;
  min-height: var(--touch-min); text-decoration: none;
}
.pos-menu__item svg { width: 22px; height: 22px; color: var(--pos-text-2); flex: none; }
.pos-menu__item:hover { background: var(--pos-surface-2); }
.pos-menu__item--danger { color: var(--pos-danger-hi); }
.pos-menu__item--danger svg { color: var(--pos-danger-hi); }
.pos-menu__item[aria-disabled="true"] { opacity: .4; pointer-events: none; }
.pos-menu__badge {
  margin-inline-start: auto; font-size: var(--fs-xs); color: var(--pos-accent-hi);
  border: 1px solid var(--pos-accent-line); border-radius: var(--r-pill); padding: 3px 10px; font-weight: 600;
}
.pos-menu__div { height: 1px; background: var(--pos-line); margin: var(--sp-3) var(--sp-4); }
.pos-menu__section { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .12em; color: var(--pos-text-3); font-weight: 700; padding: var(--sp-4) var(--sp-4) var(--sp-2); }
.pos-menu__foot { display: flex; gap: var(--sp-2); padding: var(--sp-4) var(--sp-3); border-top: 1px solid var(--pos-line); }
.pos-menu__foot button { flex: 1; height: 50px; display: grid; place-items: center; border-radius: var(--r); border: 1px solid var(--pos-line); background: transparent; color: var(--pos-text-2); transition: background .12s, border-color .12s, color .12s; }
.pos-menu__foot button:hover { background: var(--pos-surface-2); border-color: var(--pos-line-strong); color: var(--pos-text); }
.pos-menu__foot button svg { width: 20px; height: 20px; }

/* ============================================================================
   BUTTONS & CONTROLS
   ========================================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  min-height: var(--touch-min); padding: 0 var(--sp-5);
  background: var(--pos-surface-2); color: var(--pos-text);
  border: 1px solid var(--pos-line); border-radius: var(--r);
  font-weight: 600; font-size: var(--fs-base); letter-spacing: -0.01em; text-decoration: none;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { background: var(--pos-surface-3); border-color: var(--pos-line-strong); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 20px; height: 20px; }
.btn--ghost { background: transparent; border-color: transparent; color: var(--pos-text-2); }
.btn--ghost:hover { background: var(--pos-surface-2); border-color: var(--pos-line); color: var(--pos-text); }
.btn--accent { background: var(--pos-accent); border-color: var(--pos-accent); color: var(--pos-text-on-accent); }
.btn--accent:hover { background: var(--pos-accent-hi); border-color: var(--pos-accent-hi); }
.btn--pay { background: var(--pos-pay); border-color: var(--pos-pay); color: #fff; }
.btn--pay:hover { background: var(--pos-pay-hi); border-color: var(--pos-pay-hi); }
.btn--danger { background: transparent; border-color: var(--pos-danger-soft); color: var(--pos-danger-hi); }
.btn--danger:hover { background: var(--pos-danger-soft); border-color: var(--pos-danger); }
.btn--lg { min-height: 60px; font-size: var(--fs-md); padding: 0 var(--sp-7); }
.btn--block { width: 100%; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .38; pointer-events: none; }

/* Inputs */
.field { display: flex; flex-direction: column; gap: var(--sp-3); }
.field__label { font-size: var(--fs-xs); color: var(--pos-text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; }
.input, .select {
  height: 52px; width: 100%;
  padding: 0 var(--sp-4);
  background: var(--pos-surface-2); color: var(--pos-text);
  border: 1px solid var(--pos-line); border-radius: var(--r);
  font-size: var(--fs-base); transition: border-color .15s, box-shadow .15s, background .15s;
}
.input::placeholder { color: var(--pos-text-3); }
.input:focus, .select:focus { outline: none; border-color: var(--pos-accent-line); background: var(--pos-surface-3); box-shadow: 0 0 0 3px var(--pos-accent-soft); }
.input--lg { height: 60px; font-size: var(--fs-md); }
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236e6b63' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right var(--sp-4) center;
  padding-inline-end: var(--sp-8);
}
[dir="rtl"] .select { background-position: left var(--sp-4) center; }

.switch { position: relative; display: inline-flex; align-items: center; gap: var(--sp-3); cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch__track { width: 50px; height: 30px; border-radius: var(--r-pill); background: var(--pos-surface-3); border: 1px solid var(--pos-line); transition: background .18s, border-color .18s; flex: none; }
.switch__track::after { content: ''; position: absolute; top: 4px; inset-inline-start: 4px; width: 22px; height: 22px; border-radius: 50%; background: var(--pos-text-2); transition: transform .18s, background .18s; }
.switch input:checked + .switch__track { background: var(--pos-pay); border-color: var(--pos-pay); }
.switch input:checked + .switch__track::after { transform: translateX(20px); background: #fff; }
[dir="rtl"] .switch input:checked + .switch__track::after { transform: translateX(-20px); }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 11px; border-radius: var(--r-pill); font-size: var(--fs-xs); font-weight: 600; background: var(--pos-surface-3); color: var(--pos-text-2); border: 1px solid transparent; }
.badge--ok    { background: var(--pos-pay-soft); color: var(--pos-pay-hi); }
.badge--warn  { background: var(--pos-warn-soft); color: var(--pos-warn); }
.badge--danger{ background: var(--pos-danger-soft); color: var(--pos-danger-hi); }
.badge--accent{ background: var(--pos-accent-soft); color: var(--pos-accent-hi); }

/* F-key chip — whisper-quiet */
.fkey { font-family: var(--pos-mono); font-size: 11px; font-weight: 500; color: var(--pos-text-3); letter-spacing: 0.02em; }

/* ============================================================================
   EMPTY STATES
   ========================================================================= */
.empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--sp-4); padding: var(--sp-12); text-align: center; color: var(--pos-text-3);
  height: 100%;
}
.empty svg { width: 44px; height: 44px; opacity: .45; stroke-width: 1.5; }
.empty__title { font-size: var(--fs-md); color: var(--pos-text-2); font-weight: 500; }
.empty__hint { font-size: var(--fs-sm); max-width: 340px; line-height: 1.6; }

/* ============================================================================
   IMAGE PLACEHOLDER
   ========================================================================= */
.ph {
  position: relative; overflow: hidden;
  background-color: var(--pos-surface-3);
  background-image: repeating-linear-gradient(135deg, transparent, transparent 9px, rgba(255,255,255,0.022) 9px, rgba(255,255,255,0.022) 18px);
  display: grid; place-items: center;
  color: var(--pos-text-3); font-family: var(--pos-mono); font-size: var(--fs-xs); letter-spacing: 0.04em;
}

/* ============================================================================
   FULL-SCREEN STAGE (login / session / single-panel surfaces)
   ========================================================================= */
.stage {
  position: absolute; inset: 68px 0 0 0;
  display: grid; place-items: center; overflow: auto;
  background:
    radial-gradient(1400px 700px at 50% -20%, rgba(199,168,106,0.05), transparent 62%),
    var(--pos-bg-2);
  padding: var(--sp-10);
}
.stage--full { inset: 0; }
.card {
  width: 100%; max-width: 480px;
  background: var(--pos-surface); border: 1px solid var(--pos-line);
  border-radius: var(--r-xl); box-shadow: var(--shadow-2);
  padding: var(--sp-10);
}
.card--wide { max-width: 760px; }
.card__head { text-align: center; margin-bottom: var(--sp-8); }
.card__title { font-size: var(--fs-xl); font-weight: 600; letter-spacing: -0.02em; }
.card__sub { color: var(--pos-text-2); font-size: var(--fs-sm); margin-top: var(--sp-3); line-height: 1.6; }
.card__brand { display: inline-flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-6); }
.card__brand .pos-mark { width: 48px; height: 48px; font-size: 22px; }
.stack { display: flex; flex-direction: column; gap: var(--sp-5); }
.row { display: flex; gap: var(--sp-4); }
.row > * { flex: 1; }

/* Utilities */
.muted { color: var(--pos-text-2); }
.faint { color: var(--pos-text-3); }
.t-right { text-align: end; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.grow { flex: 1; }
.hidden { display: none !important; }
.uppercase { text-transform: uppercase; letter-spacing: .08em; }
.label-eyebrow { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .12em; color: var(--pos-text-3); font-weight: 600; }