/* ============================================================
   PITUKO POS — Styles
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0A0A14;
  --surface:   #14142A;
  --card:      #1E1E38;
  --border:    #2A2A50;
  --gold:      #F5A623;
  --gold-dim:  #C17D0F;
  --teal:      #4ECDC4;
  --coral:     #FF6B6B;
  --purple:    #9B59B6;
  --white:     #F0F0FF;
  --gray:      #8888AA;
  --green:     #2ECC71;
  --font-head: 'Syne', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --r:         12px;
  --tr:        0.15s ease;
}

html, body { height: 100%; overflow: hidden; background: var(--bg); }

body {
  font-family: var(--font-head);
  color: var(--white);
  display: flex; flex-direction: column;
  -webkit-tap-highlight-color: transparent;
}

/* ── LOGIN ─────────────────────────────────────────────── */
#login-screen {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 9999; padding: 24px;
}
.login-logo     { font-size: 56px; margin-bottom: 8px; }
.login-title    { font-size: 28px; font-weight: 800; color: var(--gold); letter-spacing: -1px; }
.login-subtitle { font-size: 13px; color: var(--gray); margin-bottom: 28px; }
.login-form     { width: 100%; max-width: 300px; }
.login-field    { margin-bottom: 14px; }
.login-field label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--gray); display: block; margin-bottom: 6px; }
.login-field input {
  width: 100%; padding: 12px 14px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); color: var(--white);
  font-family: var(--font-head); font-size: 15px; outline: none;
}
.login-field input:focus { border-color: var(--gold); }
.login-error { min-height: 18px; font-size: 12px; color: var(--coral); text-align: center; margin: 6px 0; }
.pin-dots { display: flex; gap: 14px; justify-content: center; margin: 10px 0 16px; }
.pin-dot  { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--border); transition: all 0.15s; }
.pin-dot.filled { background: var(--gold); border-color: var(--gold); transform: scale(1.1); }
.pin-dot.error  { background: var(--coral); border-color: var(--coral); animation: shake 0.4s ease; }
@keyframes shake { 0%,100%{transform:translateX(0)} 20%{transform:translateX(-6px)} 40%{transform:translateX(6px)} 60%{transform:translateX(-4px)} 80%{transform:translateX(4px)} }

/* ── PIN GRID ───────────────────────────────────────────── */
.pin-grid { display: grid; grid-template-columns: repeat(3, 72px); gap: 12px; justify-content: center; }
.pin-key  {
  width: 72px; height: 72px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--card);
  color: var(--white); font-family: var(--font-head);
  font-size: 22px; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--tr); user-select: none;
}
.pin-key:active { background: var(--gold); color: var(--bg); transform: scale(0.93); }
.pin-key.pin-zero { grid-column: 2; }
.pin-key.pin-del  { background: transparent; border-color: transparent; color: var(--gray); font-size: 18px; }
.pin-key.pin-del:active { background: rgba(255,107,107,0.15); color: var(--coral); }

/* ── APP SHELL ──────────────────────────────────────────── */
#app { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* ── TOPBAR ─────────────────────────────────────────────── */
#topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px; background: var(--surface);
  border-bottom: 1px solid var(--border); flex-shrink: 0; gap: 8px;
}
.brand { font-size: 16px; font-weight: 800; color: var(--gold); white-space: nowrap; }
.topbar-center { flex: 1; display: flex; justify-content: center; }
.topbar-right  { display: flex; align-items: center; gap: 8px; }
.date-time { font-family: var(--font-mono); font-size: 10px; color: var(--gray); text-align: center; line-height: 1.4; }
.inv-status { display: flex; gap: 4px; flex-wrap: wrap; }
.inv-pill   { font-family: var(--font-mono); font-size: 9px; padding: 2px 6px; border-radius: 20px; border: 1px solid; white-space: nowrap; }
.inv-pill.ok    { color: var(--teal);  border-color: var(--teal);  background: rgba(78,205,196,0.08); }
.inv-pill.low   { color: var(--coral); border-color: var(--coral); background: rgba(255,107,107,0.12); }
.inv-pill.empty { color: #ff4444;      border-color: #ff4444;      background: rgba(255,68,68,0.15); animation: pulse 1.2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }

.user-badge {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--gold); color: var(--bg);
  font-size: 12px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; flex-shrink: 0;
}

/* ── USER MENU ──────────────────────────────────────────── */
.user-menu {
  position: absolute; top: 54px; right: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 8px; min-width: 180px;
  z-index: 500; box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.user-menu-name    { font-size: 14px; font-weight: 700; padding: 6px 8px 2px; }
.user-menu-role    { font-size: 11px; color: var(--gray); padding: 0 8px 8px; }
.user-menu-divider { border-top: 1px solid var(--border); margin: 4px 0; }
.user-menu-item    { padding: 10px 8px; font-size: 13px; cursor: pointer; border-radius: 8px; transition: var(--tr); }
.user-menu-item:hover { background: var(--surface); }
.user-menu-item.danger { color: var(--coral); }

/* ── OFFLINE BANNER ─────────────────────────────────────── */
#offline-banner {
  background: rgba(255,107,107,0.15); border-bottom: 1px solid var(--coral);
  padding: 5px 12px; font-size: 11px; color: var(--coral); text-align: center;
}

/* ── TABS ───────────────────────────────────────────────── */
#tabs { display: flex; background: var(--surface); border-bottom: 1px solid var(--border); flex-shrink: 0; overflow-x: auto; }
.tab  { flex: 1; min-width: fit-content; padding: 10px 8px; text-align: center; font-size: 10px; font-weight: 700; letter-spacing: 0.3px; text-transform: uppercase; color: var(--gray); cursor: pointer; border-bottom: 2px solid transparent; transition: var(--tr); white-space: nowrap; }
.tab.active { color: var(--gold); border-bottom-color: var(--gold); }

/* ── MAIN + SCREENS ────────────────────────────────────── */
#main   { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
.screen { display: none; flex: 1; overflow-y: auto; flex-direction: column; }
.screen.active { display: flex; }

/* ── POS SCREEN ─────────────────────────────────────────── */
/* ── POS SCREEN — mobile-first, iPhone safe ──────────────── */
/* display is controlled by .screen / .screen.active */
#pos-screen {
  overflow: hidden;
  flex-direction: column;
  height: 100%;
  /* Ensure children stack vertically on mobile */
  display: none;
}
#pos-screen.active {
  display: flex;
  flex-direction: column;
}

/* Products grid — fixed height, scrollable */
#products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 8px;
  flex-shrink: 0;
  overflow-y: auto;
  /* Mobile: auto height up to 45% of viewport, so cart always has room */
  height: auto;
  min-height: 120px;
  max-height: 42vh;
}
.product-btn { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 8px 4px; cursor: pointer; text-align: center; transition: var(--tr); user-select: none; }
.product-btn:active, .product-btn.tapped { background: rgba(245,166,35,0.15); border-color: var(--gold); transform: scale(0.95); }
.product-btn .emoji  { font-size: 20px; display: block; margin-bottom: 2px; }
.product-btn .name   { font-size: 9px; font-weight: 700; color: var(--white); display: block; }
.product-btn .price  { font-family: var(--font-mono); font-size: 11px; color: var(--gold); display: block; margin-top: 2px; }

/* ── CART ───────────────────────────────────────────────── */
/* Cart section fills ALL remaining space below products */
#cart-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
  overflow: hidden;
  min-height: 0;
}
#cart-header  { display: flex; align-items: center; justify-content: space-between; padding: 6px 12px; border-bottom: 1px solid var(--border); flex-shrink: 0; font-size: 12px; font-weight: 700; color: var(--gray); }
.cart-header-right { display: flex; align-items: center; gap: 8px; }
.currency-badge { font-family: var(--font-mono); font-size: 10px; padding: 2px 8px; border-radius: 20px; border: 1px solid var(--gold); color: var(--gold); cursor: pointer; }
#clear-cart   { font-size: 11px; color: var(--coral); cursor: pointer; font-family: var(--font-mono); background: none; border: none; }

/* Cart items scrollable, constrained height */
#cart-items   { flex: 1; overflow-y: auto; padding: 4px 12px; min-height: 0; max-height: 300px; }
#cart-empty   { text-align: center; color: var(--gray); font-size: 12px; padding: 12px; }
.cart-row     { display: flex; align-items: center; padding: 5px 0; border-bottom: 1px solid rgba(255,255,255,0.04); gap: 8px; }
.cart-row .item-name  { flex: 1; font-size: 12px; font-weight: 600; }
.cart-row .qty-ctrl   { display: flex; align-items: center; gap: 5px; }
.qty-btn      { width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface); color: var(--white); font-size: 16px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.qty-btn:active { background: var(--gold); color: var(--bg); }
.qty-display  { font-family: var(--font-mono); font-size: 14px; font-weight: 600; min-width: 20px; text-align: center; }
.cart-row .line-total { font-family: var(--font-mono); font-size: 12px; color: var(--gold); min-width: 60px; text-align: right; }
.remove-btn   { color: var(--coral); cursor: pointer; font-size: 14px; background: none; border: none; padding: 0 2px; }

/* ── CHECKOUT BAR — compact, always visible at bottom ────── */
#checkout-bar {
  padding: 6px 12px 8px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  /* Safe area for iPhone home bar */
  padding-bottom: max(8px, env(safe-area-inset-bottom));
}
#totals-row   { display: flex; justify-content: space-between; margin-bottom: 5px; }
.total-item   { text-align: center; }
.total-item .lbl { font-size: 8px; color: var(--gray); text-transform: uppercase; letter-spacing: 0.5px; }
.total-item .val { font-family: var(--font-mono); font-size: 14px; font-weight: 600; }
.total-item.revenue .val { color: var(--gold); }
.total-item.cost    .val { color: var(--coral); }
.total-item.profit  .val { color: var(--teal); }
#payment-row  { display: flex; gap: 5px; margin-bottom: 5px; }
.pay-method   { flex: 1; padding: 6px 4px; border-radius: 8px; border: 1px solid var(--border); background: var(--card); color: var(--gray); font-family: var(--font-head); font-size: 9px; font-weight: 700; cursor: pointer; text-align: center; text-transform: uppercase; transition: var(--tr); }
.pay-method.selected { background: rgba(245,166,35,0.15); border-color: var(--gold); color: var(--gold); }
#cash-input-row { display: flex; gap: 8px; margin-bottom: 5px; align-items: center; }
#cash-tendered  { flex: 1; padding: 7px 10px; background: var(--card); border: 1px solid var(--border); border-radius: 8px; color: var(--white); font-family: var(--font-mono); font-size: 14px; outline: none; }
#cash-tendered:focus { border-color: var(--gold); }
#change-display { font-family: var(--font-mono); font-size: 11px; font-weight: 600; min-width: 80px; text-align: right; }
#charge-btn     { width: 100%; padding: 12px; background: var(--gold); color: var(--bg); border: none; border-radius: var(--r); font-family: var(--font-head); font-size: 14px; font-weight: 800; letter-spacing: 0.5px; cursor: pointer; transition: var(--tr); text-transform: uppercase; }
#charge-btn:active   { background: var(--gold-dim); transform: scale(0.98); }
#charge-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* ── SUMMARY & KPIs ─────────────────────────────────────── */
#summary-content, #reports-content, #users-content, #config-content { padding: 12px; min-height: 50px; }
#users-screen, #reports-screen, #config-screen, #summary-screen { overflow-y: auto; }
#users-screen { display: none; }
#users-screen.active { display: flex; flex-direction: column; }
.kpi-grid        { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; }
.kpi-card        { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 12px; }
.kpi-card .kpi-label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--gray); margin-bottom: 4px; }
.kpi-card .kpi-val   { font-family: var(--font-mono); font-size: 18px; font-weight: 600; }
.kpi-card.revenue .kpi-val { color: var(--gold); }
.kpi-card.cost    .kpi-val { color: var(--coral); }
.kpi-card.profit  .kpi-val { color: var(--teal); }
.kpi-card.txn     .kpi-val { color: var(--purple); }
.section-title   { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; color: var(--gray); padding-bottom: 6px; border-bottom: 1px solid var(--border); margin-bottom: 8px; margin-top: 12px; }
.item-breakdown  { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 10px; }
.breakdown-item  { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 8px; text-align: center; }
.breakdown-item .bi-name { font-size: 10px; color: var(--gray); }
.breakdown-item .bi-qty  { font-family: var(--font-mono); font-size: 18px; font-weight: 600; }
.cash-summary    { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 12px; margin-bottom: 10px; }
.cash-row        { display: flex; justify-content: space-between; padding: 4px 0; font-size: 12px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.cash-row:last-child { border-bottom: none; font-weight: 700; }
.cash-row .c-label { color: var(--gray); }
.cash-row .c-val   { font-family: var(--font-mono); }
.cash-row.net .c-val { color: var(--teal); font-size: 14px; }
#close-day-btn   { width: 100%; padding: 13px; background: transparent; border: 1px solid var(--coral); color: var(--coral); border-radius: var(--r); font-family: var(--font-head); font-size: 13px; font-weight: 700; cursor: pointer; text-transform: uppercase; transition: var(--tr); }
#close-day-btn:active { background: rgba(255,107,107,0.15); }

/* ── CASH DRAWER TAB ────────────────────────────────────── */
#cash-screen     { padding: 12px; gap: 10px; }
.cash-actions    { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.cash-action-btn { padding: 14px; border-radius: var(--r); border: none; cursor: pointer; font-family: var(--font-head); font-size: 13px; font-weight: 700; text-transform: uppercase; transition: var(--tr); }
.cash-action-btn.in  { background: rgba(78,205,196,0.15); color: var(--teal); border: 1px solid var(--teal); }
.cash-action-btn.out { background: rgba(255,107,107,0.12); color: var(--coral); border: 1px solid var(--coral); }
.cash-form       { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 14px; display: none; }
.cash-form.active { display: block; }
.cash-form label { font-size: 11px; color: var(--gray); display: block; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 8px; }
.cash-form label:first-child { margin-top: 0; }
.cash-form input { width: 100%; padding: 10px 12px; margin-bottom: 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; color: var(--white); font-family: var(--font-mono); font-size: 14px; outline: none; }
.cash-form input:focus { border-color: var(--gold); }
.submit-btn { width: 100%; padding: 11px; background: var(--teal); color: var(--bg); border: none; border-radius: 8px; font-family: var(--font-head); font-size: 13px; font-weight: 700; cursor: pointer; }
.ledger          { display: flex; flex-direction: column; gap: 6px; }
.ledger-entry    { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; display: flex; justify-content: space-between; align-items: center; }
.le-left .le-type  { font-size: 11px; text-transform: uppercase; font-weight: 700; }
.le-left .le-notes { font-size: 10px; color: var(--gray); margin-top: 2px; }
.le-left .le-time  { font-size: 9px; color: var(--gray); font-family: var(--font-mono); }
.le-amount { font-family: var(--font-mono); font-size: 15px; font-weight: 600; }
.ledger-entry.in   .le-type, .ledger-entry.in   .le-amount { color: var(--teal); }
.ledger-entry.out  .le-type, .ledger-entry.out  .le-amount { color: var(--coral); }
.ledger-entry.sale .le-type, .ledger-entry.sale .le-amount { color: var(--gold); }

/* ── REPORTS ────────────────────────────────────────────── */
.report-controls  { margin-bottom: 14px; }
.report-range-btns { display: flex; gap: 6px; margin-bottom: 10px; }
.range-btn        { padding: 6px 14px; border-radius: 20px; border: 1px solid var(--border); background: var(--card); color: var(--gray); font-family: var(--font-head); font-size: 11px; font-weight: 700; cursor: pointer; }
.range-btn.active { border-color: var(--gold); color: var(--gold); background: rgba(245,166,35,0.1); }
.report-custom    { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.report-custom input { background: var(--card); border: 1px solid var(--border); border-radius: 6px; color: var(--white); padding: 6px 8px; font-family: var(--font-mono); font-size: 11px; outline: none; }
.report-custom button { padding: 6px 14px; background: var(--gold); color: var(--bg); border: none; border-radius: 6px; font-family: var(--font-head); font-size: 11px; font-weight: 700; cursor: pointer; }
.report-period    { font-family: var(--font-mono); font-size: 10px; color: var(--gray); margin-bottom: 8px; }
.report-table     { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; margin-bottom: 10px; }
.rt-header        { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; padding: 8px 12px; background: var(--surface); font-size: 9px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray); }
.rt-row           { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; padding: 8px 12px; font-size: 12px; border-top: 1px solid rgba(255,255,255,0.04); }
.daily-bars       { display: flex; align-items: flex-end; gap: 4px; padding: 8px; background: var(--card); border-radius: var(--r); min-height: 90px; overflow-x: auto; margin-bottom: 10px; }
.daily-bar-col    { display: flex; flex-direction: column; align-items: center; gap: 3px; min-width: 28px; }
.daily-bar-val    { font-size: 7px; color: var(--gray); font-family: var(--font-mono); }
.daily-bar        { width: 20px; background: var(--gold); border-radius: 3px 3px 0 0; min-height: 3px; }
.daily-bar-label  { font-size: 7px; color: var(--gray); font-family: var(--font-mono); }
.export-row       { display: flex; gap: 8px; margin-top: 8px; }
.export-btn       { flex: 1; padding: 10px; border: 1px solid var(--border); background: var(--card); color: var(--gray); border-radius: 8px; font-family: var(--font-head); font-size: 11px; font-weight: 700; cursor: pointer; }

/* ── USERS ──────────────────────────────────────────────── */
.section-header  { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.add-btn         { padding: 7px 14px; background: var(--teal); color: var(--bg); border: none; border-radius: 8px; font-family: var(--font-head); font-size: 12px; font-weight: 700; cursor: pointer; }
.user-list       { display: flex; flex-direction: column; gap: 8px; }
.user-card       { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 12px; display: flex; align-items: center; gap: 12px; }
.user-card.inactive { opacity: 0.5; }
.user-avatar     { width: 40px; height: 40px; border-radius: 50%; background: var(--gold); color: var(--bg); font-size: 14px; font-weight: 800; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.user-info       { flex: 1; }
.user-name       { font-size: 14px; font-weight: 700; }
.user-meta       { font-size: 10px; color: var(--gray); margin-top: 2px; }
.user-actions    { display: flex; gap: 6px; }
.icon-btn        { width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border); background: transparent; cursor: pointer; font-size: 14px; display: flex; align-items: center; justify-content: center; }
.icon-btn.del    { border-color: var(--coral); }

/* ── CONFIG / SETTINGS ──────────────────────────────────── */
.settings-group  { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 14px; margin-bottom: 12px; }
.settings-group h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--gray); margin-bottom: 12px; }
.setting-row     { display: flex; align-items: center; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
.setting-row:last-child { border-bottom: none; }
.setting-row label { font-size: 12px; color: var(--white); }
.setting-row input { width: 90px; padding: 6px 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; color: var(--gold); font-family: var(--font-mono); font-size: 13px; text-align: right; outline: none; }
.setting-row input:focus { border-color: var(--gold); }
.save-btn        { width: 100%; padding: 12px; background: var(--gold); color: var(--bg); border: none; border-radius: var(--r); font-family: var(--font-head); font-size: 13px; font-weight: 800; cursor: pointer; text-transform: uppercase; }
.cancel-btn      { width: 100%; padding: 10px; background: transparent; border: 1px solid var(--border); color: var(--gray); border-radius: var(--r); font-family: var(--font-head); font-size: 12px; cursor: pointer; margin-top: 6px; }
.form-actions    { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
/* Product editor */
.prod-col-headers { display: grid; grid-template-columns: 36px 1fr 1fr 70px 70px 28px; gap: 5px; padding: 0 0 4px; border-bottom: 1px solid var(--border); margin-bottom: 4px; }
.prod-col-headers span { font-size: 8px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray); text-align: center; }
.prod-col-headers span:nth-child(2), .prod-col-headers span:nth-child(3) { text-align: left; }
.product-editor-row { display: grid; grid-template-columns: 36px 1fr 1fr 70px 70px 28px; gap: 5px; align-items: center; padding: 5px 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
.prod-emoji-btn  { width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); font-size: 16px; cursor: pointer; text-align: center; line-height: 32px; }
.prod-name-input, .prod-price-input, .prod-cost-input { padding: 6px 6px; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; color: var(--white); font-family: var(--font-mono); font-size: 11px; outline: none; width: 100%; }
.prod-name-input:focus, .prod-price-input:focus, .prod-cost-input:focus { border-color: var(--gold); }
.prod-delete-btn { width: 26px; height: 26px; border-radius: 6px; border: 1px solid var(--coral); background: transparent; color: var(--coral); font-size: 12px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.add-product-btn { width: 100%; padding: 9px; background: transparent; border: 1px dashed var(--teal); border-radius: 8px; color: var(--teal); font-family: var(--font-head); font-size: 12px; font-weight: 700; cursor: pointer; margin-top: 8px; }
.user-form       { margin-bottom: 12px; }

/* ── RECEIPT MODAL ──────────────────────────────────────── */
#modal-overlay   { position: fixed; inset: 0; background: rgba(0,0,0,0.75); display: flex; align-items: center; justify-content: center; z-index: 999; padding: 20px; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
#modal-overlay.active { opacity: 1; pointer-events: all; }
#modal           { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 24px; width: 100%; max-width: 340px; transform: scale(0.95); transition: transform 0.2s; }
#modal-overlay.active #modal { transform: scale(1); }
#modal h2        { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.receipt-id      { font-family: var(--font-mono); font-size: 11px; color: var(--gray); margin-bottom: 16px; }
.receipt-line    { display: flex; justify-content: space-between; font-size: 13px; padding: 4px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.receipt-line .rl-name { color: var(--gray); }
.receipt-line .rl-val  { font-family: var(--font-mono); color: var(--gold); }
.receipt-total   { display: flex; justify-content: space-between; font-size: 20px; font-weight: 800; color: var(--gold); padding: 10px 0; border-top: 1px solid var(--border); margin-bottom: 8px; }
.change-row      { font-family: var(--font-mono); font-size: 13px; color: var(--green); text-align: center; margin-bottom: 14px; }
.close-modal-btn { width: 100%; padding: 13px; background: var(--gold); color: var(--bg); border: none; border-radius: var(--r); font-family: var(--font-head); font-size: 14px; font-weight: 800; cursor: pointer; text-transform: uppercase; }

/* ── TOAST ──────────────────────────────────────────────── */
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(80px); background: var(--surface); border: 1px solid var(--border); border-radius: 30px; padding: 10px 20px; font-size: 13px; font-weight: 600; transition: transform 0.3s ease; z-index: 1000; white-space: nowrap; pointer-events: none; }
#toast.show    { transform: translateX(-50%) translateY(0); }
#toast.success { border-color: var(--teal); color: var(--teal); }
#toast.error   { border-color: var(--coral); color: var(--coral); }

/* ── MISC ───────────────────────────────────────────────── */
.empty-msg   { text-align: center; color: var(--gray); font-size: 12px; padding: 16px; }
.error-msg   { text-align: center; color: var(--coral); font-size: 12px; padding: 16px; }
.loading-msg { text-align: center; color: var(--gray); font-size: 13px; padding: 24px; }
::-webkit-scrollbar { width: 3px; } ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (min-width: 600px) {
  /* Side-by-side layout: products left, cart right */
  #pos-screen {
    flex-direction: row;
    height: 100%;
  }
  #products {
    width: 55%;
    height: 100%;
    max-height: none;
    min-height: 0;
    border-right: 1px solid var(--border);
    overflow-y: auto;
    align-content: start;
  }
  #cart-section {
    width: 45%;
    height: 100%;
    border-top: none;
    border-left: none;
    flex: 1;
  }
  /* Remove max-height on cart-items for desktop — let it scroll naturally */
  #cart-items { max-height: none; }
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
  #products { grid-template-columns: repeat(4, 1fr); width: 50%; }
  #cart-section { width: 50%; }
  .kpi-grid { grid-template-columns: repeat(4, 1fr); }
  .rt-row, .rt-header { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

/* ── PRINT BUTTON ────────────────────────────────────────── */
.print-btn {
  width: 48px; height: 48px; border-radius: var(--r);
  background: var(--surface); border: 1px solid var(--border);
  font-size: 20px; cursor: pointer; display: flex;
  align-items: center; justify-content: center;
  transition: var(--tr); flex-shrink: 0;
}
.print-btn:active { background: var(--card); transform: scale(0.95); }

/* ── PRINT MEDIA — 58mm thermal receipt ─────────────────── */
@media print {
  body > *:not(#print-receipt) { display: none !important; }
  @page { size: 58mm auto; margin: 2mm; }
}