/* ===================================================================
   Masoheng Gas — LPG Tracker
   Design direction: industrial utility signage, not generic SaaS.
   Steel-dark nav, a single flame-orange accent, tabular numerals for
   currency/weight so figures line up like a scale readout. Color is
   used only to mean something (success/warning/danger), never as
   decoration.
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@600;700&family=Inter:wght@400;500;700&display=swap');

:root {
  --ink: #1B2430;
  --ink-2: #3A4553;
  --paper: #EEF1F2;
  --surface: #FFFFFF;
  --line: #CBD0D3;
  --text: #212A33;
  --text-muted: #5B6670;

  --accent: #DD5A1B;
  --accent-dark: #A6420E;
  --accent-bg: #FBE9DD;

  --success: #2F6B3A;
  --success-bg: #E4EEE1;
  --warning: #B4741A;
  --warning-bg: #FBEEDC;
  --danger: #A32D2D;
  --danger-bg: #FBEAEA;

  --font-display: 'Barlow Condensed', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--text);
  line-height: 1.5;
}

/* ---------- Navigation ---------- */

nav {
  background: var(--ink);
  padding: 0.85rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.25rem;
}

nav::before {
  content: "Masoheng Gas";
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: #fff;
  letter-spacing: 0.02em;
  margin-right: 0.75rem;
}

nav a {
  color: #C7CDD3;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

nav a:hover,
nav a:focus-visible {
  color: #fff;
  border-bottom-color: var(--accent);
}

nav form { margin-left: auto; }

nav a.end-shift {
  margin-left: auto;
  background: transparent;
  color: #E7A084;
  border: 1px solid var(--accent-dark);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.9rem;
  border-radius: 4px;
}

nav a.end-shift:hover { background: var(--accent-dark); color: #fff; border-bottom-color: transparent; }

nav button {
  background: transparent;
  color: #E7A084;
  border: 1px solid var(--accent-dark);
  font-family: var(--font-body);
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
}

nav button:hover { background: var(--accent-dark); color: #fff; }

/* ---------- Layout ---------- */

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
}

h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
  margin: 1.75rem 0 0.75rem;
}

h2 { font-size: 1.9rem; margin-top: 0; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }

a { color: var(--accent-dark); }

/* ---------- Tables ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 1rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

th {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-muted);
  background: var(--paper);
}

tr:last-child td { border-bottom: none; }

/* numeric columns (price, weight, quantity) line up like a scale
   readout instead of ragged proportional digits */
td { font-variant-numeric: tabular-nums; }

tr.danger td {
  background: var(--danger-bg);
}

tr.warning td {
  background: var(--warning-bg);
}

tr.voided td {
  text-decoration: line-through;
  color: var(--text-muted);
  opacity: 0.75;
}

/* ---------- Forms ---------- */

form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.25rem;
  max-width: 480px;
}

label {
  display: block;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0.9rem 0 0.3rem;
}

label:first-of-type { margin-top: 0; }

input, select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  color: var(--text);
  min-height: 44px;
}

input:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

input[type="checkbox"] {
  width: auto;
  min-height: auto;
  margin-right: 0.4rem;
  accent-color: var(--accent);
}

button, input[type="submit"] {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.65rem 1.2rem;
  min-height: 44px;
  cursor: pointer;
  margin-top: 1rem;
  transition: background 0.15s ease;
}

button:hover { background: var(--accent-dark); }

/* delete/remove buttons inside inline forms read as outlined-danger */
form[action*="delete"] button {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  margin-top: 0;
}

form[action*="delete"] button:hover { background: var(--danger-bg); }

/* tables holding inline edit rows shouldn't inherit the card form style */
table form {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  max-width: none;
}

/* ---------- Flash messages ---------- */

p.success, p.warning, p.danger {
  font-weight: 500;
  padding: 0.7rem 1rem;
  border-radius: 4px;
  border-left: 4px solid;
  margin: 0.6rem 0;
}

p.success { background: var(--success-bg); color: var(--success); border-color: var(--success); }
p.warning { background: var(--warning-bg); color: var(--warning); border-color: var(--warning); }
p.danger  { background: var(--danger-bg);  color: var(--danger);  border-color: var(--danger); }

small { color: var(--text-muted); }

/* ---------- Barcode sheet ---------- */

.barcode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}

.barcode-label {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  padding: 0.6rem;
  text-align: center;
  break-inside: avoid;
}

.barcode-label-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
}

.barcode-label-price {
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  color: var(--accent-dark);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.barcode-label img {
  width: 100%;
  height: auto;
  image-rendering: pixelated;
}

.barcode-label-code {
  font-family: 'Courier New', ui-monospace, monospace;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

@media print {
  nav, h2, p small, button { display: none; }
  .barcode-grid { grid-template-columns: repeat(4, 1fr); }
  body { background: #fff; }
  main { max-width: none; padding: 0; }
}

/* ---------- Receipt preview ---------- */

.receipt-paper {
  background: #FFFFFF;
  color: #111;
  font-family: 'Courier New', ui-monospace, monospace;
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre;
  width: fit-content;
  max-width: 100%;
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  margin: 1rem 0;
  overflow-x: auto;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  nav { flex-direction: column; align-items: flex-start; }
  nav::before { margin-bottom: 0.25rem; }
  nav form { margin-left: 0; }
  main { padding: 1.25rem 0.9rem 2.5rem; }
  table, thead, tbody, th, td, tr { display: block; }
  th { display: none; }
  tr { border-bottom: 2px solid var(--line); padding: 0.5rem 0; }
  td { border: none; padding: 0.3rem 0.85rem; }
  td:before {
    content: attr(data-label);
    font-weight: 500;
    color: var(--text-muted);
    display: inline-block;
    min-width: 110px;
  }
}