/* ═══════════════════════════════════════════════
   ROB'S GERMAN AUTO — Invoice Stylesheet
   Red & Silver RS Edition
   ═══════════════════════════════════════════════ */

:root {
  /* ── Brand reds ── */
  --brand-red:     hsl(4, 84%, 28%);
  --brand-red-md:  hsl(4, 80%, 38%);
  --brand-red-lt:  hsl(4, 78%, 50%);
  --accent:        hsl(4, 86%, 52%);
  --accent-glow:   hsla(4, 86%, 52%, 0.28);

  /* ── Silver / chrome ── */
  --silver-lt:  hsl(220, 10%, 88%);
  --silver-md:  hsl(220, 8%, 68%);
  --silver-dk:  hsl(220, 8%, 50%);

  /* ── Dark backgrounds ── */
  --bg-page:   hsl(0, 5%, 8%);
  --bg-card:   hsl(0, 4%, 12%);
  --bg-card-2: hsl(0, 4%, 15%);
  --bg-input:  hsl(0, 4%, 9%);

  /* ── Borders ── */
  --border:       hsl(0, 6%, 22%);
  --border-focus: var(--accent);

  /* ── Text ── */
  --text-primary:   hsl(0, 10%, 92%);
  --text-secondary: hsl(0, 5%, 58%);
  --text-muted:     hsl(0, 4%, 40%);

  /* ── Utility ── */
  --red-accent:   hsl(4, 86%, 52%);
  --green-accent: hsl(148, 52%, 42%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-card: 0 4px 32px hsla(0,0%,0%,0.55), 0 1px 4px hsla(0,0%,0%,0.4);
  --shadow-glow: 0 0 0 3px var(--accent-glow);

  --font-body:    'Inter', system-ui, sans-serif;
  --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;

  accent-color: var(--accent);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Page Background ──────────────────── */
.page-bg {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 70% 35% at 15% 0%,    hsla(4, 80%, 30%, 0.20) 0%, transparent 60%),
    radial-gradient(ellipse 50% 25% at 85% 100%,  hsla(4, 70%, 20%, 0.14) 0%, transparent 60%),
    var(--bg-page);
  padding: 2rem 1rem 4rem;
}

/* ── Invoice Wrapper ──────────────────── */
.invoice-wrapper {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Header ───────────────────────────── */
.invoice-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  background: linear-gradient(135deg, hsl(0,5%,9%) 0%, hsl(0,6%,13%) 100%);
  border: 1px solid hsl(4, 40%, 22%);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  box-shadow: var(--shadow-card), 0 0 60px hsla(4, 80%, 20%, 0.25);
  position: relative;
  overflow: hidden;
}

.invoice-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, hsla(4,86%,52%,0.4) 30%, hsla(4,86%,52%,0.6) 50%, hsla(4,86%,52%,0.4) 70%, transparent 100%);
  pointer-events: none;
}

.invoice-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 70% at 20% 50%, hsla(4,80%,40%,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  position: relative;
  z-index: 1;
}

.brand-logo {
  width: 148px;
  height: 100px;
  border-radius: 10px;
  object-fit: cover;
  object-position: center;
  border: 1px solid hsla(4, 60%, 40%, 0.25);
  box-shadow: 0 4px 20px hsla(0,0%,0%,0.6);
  flex-shrink: 0;
  background: #0e0e0e;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--silver-lt);
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-shadow: 0 2px 12px hsla(0,0%,0%,0.5);
}

/* RS-style accent on brand name — red underline stripe */
.brand-name span {
  color: var(--accent);
}

.brand-tagline {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--silver-dk);
  text-transform: uppercase;
  margin-top: 0.35rem;
}

.invoice-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
  position: relative;
  z-index: 1;
  padding-left: 2.5rem;
  border-left: 1px solid hsla(4, 50%, 40%, 0.35);
}

.invoice-badge {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--brand-red-md) 100%);
  padding: 0.35rem 1.1rem;
  border-radius: 999px;
  box-shadow: 0 2px 12px hsla(4,80%,40%,0.4);
}

.invoice-fields-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.invoice-number-wrap {
  display: contents;
}

.meta-label {
  font-size: 0.78rem;
  color: var(--silver-dk);
  font-weight: 500;
  white-space: nowrap;
}

.meta-input {
  background: hsla(0,0%,0%,0.3);
  border: 1px solid hsla(4,50%,40%,0.35);
  border-radius: var(--radius-sm);
  color: var(--silver-lt);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-body);
  padding: 0.4rem 0.75rem;
  width: 150px;
  text-align: right;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="date"].meta-input {
  text-align: left;
  width: 160px;
}

.meta-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px hsla(4,80%,52%,0.2);
}

.meta-input::placeholder { color: hsla(0,5%,55%,0.5); }

/* ── Cards ────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s;
}

.card:hover { border-color: hsl(0, 8%, 28%); }

.section-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--border);
}

/* Red left-pip accent on section titles */
.section-title::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 1.1em;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.section-icon { font-size: 1.05rem; }

/* ── Grids ────────────────────────────── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 680px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .card { padding: 1.5rem; }

  /* ── Header mobile layout ── */
  .invoice-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
  }

  .header-brand {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    text-align: center;
  }

  .brand-logo {
    width: 120px;
    height: 80px;
  }

  .brand-name {
    font-size: 1.35rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
  }

  .brand-tagline {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    white-space: nowrap;
  }

  .invoice-meta {
    align-items: center;
    width: 100%;
    margin-top: 1rem;
    padding-top: 1.5rem;
    padding-left: 0;
    border-left: none;
    border-top: 1px solid hsla(4, 50%, 40%, 0.35);
  }
}

/* ── Field Groups ─────────────────────── */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field-label {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.field-input, .field-textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-body);
  padding: 0.65rem 0.875rem;
  outline: none;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field-input:focus, .field-textarea:focus {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  background: hsl(0, 4%, 11%);
}

.field-input::placeholder, .field-textarea::placeholder {
  color: var(--text-muted);
}

.field-input:hover:not(:focus), .field-textarea:hover:not(:focus) {
  border-color: hsl(0, 6%, 30%);
}

/* remove number arrows */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

/* date picker icon tint */
input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.55) sepia(1) saturate(3) hue-rotate(320deg);
  cursor: pointer;
}

.field-textarea {
  resize: vertical;
  line-height: 1.6;
  min-height: 100px;
}

.vin-input {
  font-family: 'Courier New', monospace;
  letter-spacing: 0.12em;
  font-size: 0.9rem;
}

.mt-sm { margin-top: 1.25rem; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ── Labor Table ──────────────────────── */
/* ── Labor List (stacked card layout) ─── */
.labor-list {
  margin-bottom: 1rem;
}

.labor-rows {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.labor-row {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-input);
  animation: rowIn 0.2s ease;
  transition: border-color 0.2s;
}

.labor-row:hover {
  border-color: hsl(0, 8%, 30%);
}

@keyframes rowIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Description row ── */
.labor-row-desc-wrap {
  display: flex;
  align-items: flex-start;
  border-bottom: 1px solid var(--border);
}

.row-desc {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  padding: 0.875rem 1rem;
  outline: none;
  min-width: 0;
  min-height: 110px;
  resize: vertical;
}

.row-desc::placeholder { color: var(--text-muted); }

.row-desc:focus {
  background: hsla(4,80%,40%,0.05);
  box-shadow: inset 0 0 0 2px var(--accent);
}

.remove-row-btn {
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.75rem 1rem;
  flex-shrink: 0;
  align-self: flex-start;
  transition: color 0.15s, background 0.15s;
  display: flex;
  align-items: center;
  line-height: 1;
}

/* ── Fields row ── */
.labor-row-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  divide-color: var(--border);
}

.labor-field {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  padding: 0;
}

.labor-field:last-child {
  border-right: none;
}

.labor-field-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.45rem 1rem 0;
  pointer-events: none;
}

.labor-field input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  padding: 0.3rem 1rem 0.7rem;
  width: 100%;
  outline: none;
  transition: background 0.15s;
}

.labor-field input:focus {
  background: hsla(4,80%,40%,0.05);
  box-shadow: inset 0 0 0 2px var(--accent);
}

.labor-field input::placeholder { color: var(--text-muted); }

.labor-field-cost .row-cost {
  font-weight: 700;
  color: hsl(148, 50%, 46%);
  cursor: default;
  pointer-events: none;
  font-size: 1rem;
}

.remove-row-btn:hover {
  color: var(--accent);
  background: hsla(4,80%,50%,0.08);
}

/* ── Add Row Button ───────────────────── */
.btn-add-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  padding: 0.6rem 1.25rem;
  width: 100%;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.btn-add-row:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: hsla(4,80%,50%,0.05);
}

.btn-add-icon { font-size: 1.1rem; line-height: 1; }

/* ── Totals ───────────────────────────── */
.totals-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.totals-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: flex-end;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.totals-row:last-child { border-bottom: none; }

.totals-label {
  color: var(--text-secondary);
  font-weight: 500;
  margin-right: auto;
}

.totals-value {
  font-weight: 700;
  color: var(--text-primary);
  min-width: 90px;
  text-align: right;
}

.tax-input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.3rem 0.6rem;
  width: 70px;
  text-align: center;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.tax-input:focus {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}

.totals-tax-amount {
  color: var(--text-secondary);
  min-width: 90px;
  text-align: right;
  font-weight: 600;
}

.totals-grand {
  background: hsl(0, 5%, 10%);
  border-top: 1px solid hsl(4, 30%, 20%);
}

.totals-grand .totals-label {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.grand-total {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--accent) !important;
  text-shadow: 0 0 20px hsla(4,80%,52%,0.4);
}

/* ── Signature ────────────────────────── */
.sig-disclaimer {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.sig-canvas-wrap {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
  cursor: crosshair;
}

.sig-canvas-wrap:hover { border-color: hsl(0,6%,32%); }

.sig-canvas-wrap.is-signing {
  border-style: solid;
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}

#signature-canvas {
  display: block;
  width: 100%;
  height: 180px;
  touch-action: none;
}

.sig-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-muted);
  pointer-events: none;
  user-select: none;
  font-style: italic;
  letter-spacing: 0.05em;
}

.sig-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.875rem;
}

/* ── Buttons ──────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--brand-red-md) 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.875rem 2rem;
  cursor: pointer;
  box-shadow: 0 4px 20px hsla(4,80%,45%,0.4);
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px hsla(4,80%,45%,0.55);
  filter: brightness(1.1);
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.25rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: hsla(4,80%,50%,0.06);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.875rem 1.5rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.btn-ghost:hover {
  color: var(--text-secondary);
  border-color: var(--border);
}

/* ── Form Actions ─────────────────────── */
.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ── Submit to Drive button ───────────────── */
.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, hsl(145, 60%, 36%) 0%, hsl(145, 55%, 28%) 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.875rem 2rem;
  cursor: pointer;
  box-shadow: 0 4px 20px hsla(145, 60%, 30%, 0.4);
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s, opacity 0.15s;
  letter-spacing: 0.02em;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px hsla(145, 60%, 30%, 0.55);
  filter: brightness(1.1);
}

.btn-submit:active  { transform: translateY(0); }
.btn-submit:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ── Toast notification ─────────────────── */
.submit-toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 0.5rem;
  border: 1px solid transparent;
  transition: opacity 0.5s ease;
}

.submit-toast.loading {
  background: hsl(218, 20%, 18%);
  border-color: var(--border);
  color: var(--text-secondary);
}

.submit-toast.success {
  background: hsl(145, 40%, 12%);
  border-color: hsl(145, 50%, 25%);
  color: hsl(145, 55%, 72%);
}

.submit-toast.error {
  background: hsl(4, 40%, 12%);
  border-color: hsl(4, 60%, 28%);
  color: hsl(4, 80%, 72%);
}

.toast-link {
  color: inherit;
  font-weight: 700;
  text-decoration: underline;
  white-space: nowrap;
  margin-left: 0.5rem;
}

/* ══ PRINT STYLES ════════════════════════════════ */
@media print {
  body { background: #fff; color: #111; }

  .page-bg {
    background: #fff;
    padding: 0;
  }

  .invoice-wrapper { max-width: 100%; }

  .invoice-header {
    background: #1a1a1a !important;
    border-top: 4px solid #cc2200 !important;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
    border-radius: 0;
  }

  .brand-name { color: #e8e8e8 !important; }
  .brand-tagline { color: #888 !important; }

  .invoice-badge {
    background: #cc2200 !important;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: none;
    break-inside: avoid;
  }

  .section-title {
    color: #111;
    border-color: #ddd;
  }

  .section-title::before {
    background: #cc2200 !important;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .field-input, .field-textarea, .tax-input, .meta-input {
    background: #f9f9f9;
    color: #111;
    border: 1px solid #ccc;
  }

  .labor-row { border-color: #ddd; background: #fafafa; }
  .labor-row-desc-wrap { border-color: #ddd; }
  .labor-field { border-color: #ddd; }
  .labor-field input, .row-desc { color: #111; background: transparent; }
  .labor-field-label { color: #666; }

  .btn-add-row, .sig-actions, .form-actions, .remove-row-btn { display: none !important; }

  .grand-total { color: #cc2200 !important; text-shadow: none !important; }

  .totals-grand { background: #fff5f5 !important; print-color-adjust: exact; -webkit-print-color-adjust: exact; }

  .sig-canvas-wrap {
    background: #fff;
    border: 1.5px solid #ccc;
    height: 150px;
  }

  .totals-label { color: #555 !important; }
  .totals-value { color: #111 !important; }
  .totals-tax-amount { color: #555 !important; }
}