:root {
  --bg: #050814;
  --bg2: #0a1020;
  --card: rgba(14, 22, 42, 0.92);
  --border: rgba(94, 231, 255, 0.16);
  --text: #e8eef8;
  --muted: #8b9bb4;
  --accent: #5ee7ff;
  --accent2: #7c8cff;
  --danger: #f87171;
  --ok: #34d399;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  --radius: 14px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --nav-h: 64px;
  --font: "Outfit", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  font-family: var(--font);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100%;
  -webkit-tap-highlight-color: transparent;
}
body { padding-bottom: calc(var(--nav-h) + var(--safe-b) + 12px); }

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(180deg, #0f172a 0%, rgba(15, 23, 42, 0.95) 100%);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px 10px;
  backdrop-filter: blur(10px);
}
.app-header h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.app-header .sub {
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 2px;
}
.badge {
  display: inline-block;
  background: rgba(94, 231, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(94, 231, 255, 0.35);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 600;
}

/* Login gate */
.login-gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  position: relative;
  z-index: 1;
}
.login-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 22px 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.login-card .brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.login-card .brand-row img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
}
.login-card h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}
.login-card .sub {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 2px 0 0;
}
.login-card .err {
  display: none;
  margin: 10px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.35);
  color: var(--danger);
  font-size: 0.85rem;
}
.login-card .err.show { display: block; }
.login-card .hint {
  margin-top: 14px;
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}
.login-card .check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0 4px;
  color: var(--muted);
  font-size: 0.85rem;
}
.login-card .check input { width: auto; }

.app-shell { display: none; }
.app-shell.active { display: block; }
.login-gate.hidden { display: none; }

.tech-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 8px;
}
.tech-bar .who {
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--mono);
}
.tech-bar .who strong { color: var(--accent); }

.totals .grand span:last-child { color: var(--accent); }
.item .cat, .chip.active { color: var(--accent); }
.chip.active {
  background: rgba(94, 231, 255, 0.1);
  border-color: var(--accent);
}
.nav-btn.active { color: var(--accent); }
.item .price { color: var(--ok); }

.screen { display: none; padding: 14px 14px 8px; }
.screen.active { display: block; animation: fade 0.18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.card h2 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  color: var(--accent2);
  font-weight: 700;
}

label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 8px 0 4px;
}
input, select, textarea {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 0.95rem;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}
textarea { min-height: 72px; resize: vertical; }

.row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.btn {
  appearance: none;
  border: none;
  border-radius: 12px;
  padding: 12px 14px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.08s ease, opacity 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, #5ee7ff 0%, #7c8cff 55%, #a78bfa 100%);
  color: #050814;
  width: 100%;
}
.btn-secondary {
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--border);
  width: 100%;
}
.btn-ghost {
  background: transparent;
  color: var(--accent2);
  border: 1px solid var(--border);
  padding: 8px 10px;
  font-size: 0.8rem;
}
.btn-danger {
  background: rgba(248, 113, 113, 0.12);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.35);
  padding: 8px 10px;
  font-size: 0.8rem;
}
.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.search-wrap { position: relative; margin-bottom: 10px; }
.search-wrap input { padding-left: 36px; }
.search-wrap::before {
  content: "⌕";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1rem;
}

.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 8px;
  scrollbar-width: none;
}
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: 0 0 auto;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}
.chip.active {
  background: rgba(45, 212, 191, 0.12);
  border-color: var(--accent2);
  color: var(--accent2);
}

.item {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 8px;
}
.item .cat {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.item .desc {
  font-size: 0.86rem;
  line-height: 1.35;
  margin-bottom: 8px;
}
.item .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
}
.item .price { color: var(--ok); font-weight: 700; }
.item .add-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin-top: 10px;
  align-items: center;
}
.item .add-row input {
  max-width: 110px;
  text-align: center;
  padding: 9px;
}
.item .add-row .btn { width: auto; padding: 9px 14px; }

.quote-line {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 8px;
}
.quote-line .top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: flex-start;
}
.quote-line .desc { font-size: 0.86rem; flex: 1; }
.quote-line .total {
  color: var(--ok);
  font-weight: 700;
  white-space: nowrap;
}
.quote-line .controls {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  margin-top: 10px;
  align-items: end;
}
.quote-line .controls label { margin-top: 0; }
.quote-line .controls input { padding: 8px; }

.totals {
  background: linear-gradient(160deg, #1a2740, #132033);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-top: 8px;
}
.totals .line {
  display: flex;
  justify-content: space-between;
  margin: 6px 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.totals .line strong { color: var(--text); }
.totals .grand {
  border-top: 1px dashed var(--border);
  margin-top: 10px;
  padding-top: 10px;
  font-size: 1.05rem;
  color: var(--text);
  font-weight: 800;
}
.totals .grand span:last-child { color: var(--accent); }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 28px 12px;
  font-size: 0.9rem;
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--nav-h) + var(--safe-b));
  padding-bottom: var(--safe-b);
  background: #0d1524;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  z-index: 30;
}
.nav-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  cursor: pointer;
}
.nav-btn .ico { font-size: 1.15rem; line-height: 1; }
.nav-btn.active { color: var(--accent); }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--nav-h) + var(--safe-b) + 16px);
  transform: translateX(-50%) translateY(20px);
  background: #1f2937;
  color: white;
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 50;
  white-space: nowrap;
  max-width: 90vw;
  overflow: hidden;
  text-overflow: ellipsis;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Print / PDF layout */
@media print {
  body {
    background: white;
    color: black;
    padding: 0;
  }
  .app-header, .bottom-nav, .no-print, .toast { display: none !important; }
  .screen { display: none !important; }
  #printSheet {
    display: block !important;
    padding: 20px;
    color: #111;
  }
  #printSheet table { width: 100%; border-collapse: collapse; font-size: 11px; }
  #printSheet th, #printSheet td { border: 1px solid #ccc; padding: 6px; text-align: left; }
  #printSheet th { background: #f3f3f3; }
}
#printSheet { display: none; }

.preview-box {
  background: white;
  color: #111;
  border-radius: 10px;
  padding: 14px;
  font-size: 0.78rem;
  max-height: 50vh;
  overflow: auto;
}
.preview-box h3 { margin: 0 0 6px; font-size: 1rem; }
.preview-box table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.preview-box th, .preview-box td {
  border: 1px solid #ddd;
  padding: 5px;
  text-align: left;
  vertical-align: top;
}
.preview-box th { background: #f5f5f5; }

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.stat {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}
.stat .k { color: var(--muted); font-size: 0.72rem; }
.stat .v { font-size: 1.1rem; font-weight: 800; margin-top: 4px; color: var(--accent); }