/* MarginFlow Pro - E-commerce Profit Margin Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@600;700&display=swap');

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1f293d;
  --bg-card: rgba(17, 24, 39, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);

  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #64748b;

  --emerald: #10b981;
  --emerald-grad: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gold: #f59e0b;

  --radius-xs: 3px;
  --radius-sm: 4px;
  --radius-md: 5px;
  --radius-lg: 8px;
  --radius-full: 4px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Plus Jakarta Sans', sans-serif; background: var(--bg-primary); color: var(--text-main); min-height: 100vh; }
.container { max-width: 1360px; margin: 0 auto; padding: 0 16px; }

.navbar {
  position: sticky; top: 0; z-index: 100; backdrop-filter: blur(16px);
  background: var(--bg-card); border-bottom: 1px solid var(--border-subtle); padding: 10px 0;
}
.brand-logo { font-size: 1.15rem; font-weight: 800; color: #fff; text-decoration: none; display: flex; align-items: center; gap: 8px; }
.brand-badge { background: var(--emerald-grad); color: #fff; font-size: 0.65rem; padding: 2px 7px; border-radius: var(--radius-sm); font-weight: 700; }

.ad-slot-header { margin: 10px 0 6px 0; display: flex; justify-content: center; }
.ad-leaderboard {
  width: 728px; min-height: 70px; background: var(--bg-card); border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-md); display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.ad-label { font-size: 0.65rem; text-transform: uppercase; color: var(--text-dim); padding: 2px 0; }

.hero { text-align: center; padding: 14px 0 10px 0; }
.hero-title { font-size: 1.7rem; font-weight: 800; margin-bottom: 4px; }
.hero-title span { background: var(--emerald-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.main-grid {
  display: grid; grid-template-columns: 1fr 290px; gap: 16px; align-items: start; margin-bottom: 28px;
}

.calc-card {
  background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 16px 18px;
}
.split-pane { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.input-group { margin-bottom: 12px; }
.label-row { display: flex; justify-content: space-between; margin-bottom: 4px; }
.input-label { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); }
.stepper-box {
  display: flex; align-items: center; background: var(--bg-secondary); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm); padding: 3px 10px;
}
.prefix, .suffix { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--text-muted); font-size: 0.9rem; }
.num-input {
  flex: 1; background: transparent; border: none; outline: none; font-family: 'JetBrains Mono', monospace;
  font-weight: 700; font-size: 0.95rem; color: #fff; padding: 6px; width: 100%;
}
.range-slider {
  width: 100%; height: 5px; background: var(--bg-tertiary); border-radius: var(--radius-xs); outline: none;
  -webkit-appearance: none; appearance: none; cursor: pointer; margin-top: 6px;
}
.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: var(--radius-xs);
  background: var(--emerald); cursor: pointer;
}

/* Results */
.results-card {
  background: var(--bg-secondary); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md); padding: 14px 16px; display: flex; flex-direction: column; justify-content: space-between;
}
.primary-kpi {
  text-align: center; padding: 14px; background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3); border-radius: var(--radius-sm); margin-bottom: 12px;
}
.primary-kpi-val { font-family: 'JetBrains Mono', monospace; font-size: 1.8rem; font-weight: 800; color: var(--emerald); }

.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
.kpi-box { background: var(--bg-tertiary); padding: 8px 10px; border-radius: var(--radius-sm); }
.kpi-lbl { font-size: 0.7rem; color: var(--text-dim); }
.kpi-num { font-family: 'JetBrains Mono', monospace; font-size: 0.95rem; font-weight: 700; margin-top: 2px; }

.chart-box { height: 160px; width: 100%; position: relative; margin-bottom: 10px; }

#btnPrintMargin {
  border-radius: var(--radius-sm) !important;
  padding: 9px 14px !important;
  font-size: 0.85rem !important;
}

/* Sticky Skyscraper */
.sidebar-sticky-rail { position: sticky; top: 90px; }
.ad-skyscraper {
  width: 290px; min-height: 520px; background: var(--bg-card);
  border: 1px dashed var(--border-subtle); border-radius: var(--radius-md); text-align: center;
}

@media (max-width: 1024px) {
  .main-grid { grid-template-columns: 1fr; }
  .sidebar-sticky-rail { display: none; }
  .split-pane { grid-template-columns: 1fr; }
}

/* Print Statement Defaults (Hidden on screen) */
.print-statement-header, .print-statement-footer, .print-itemized-section {
  display: none;
}

/* Institutional Grade A4 Portrait Unit Economics PDF - Pure Monochrome Black & White */
@media print {
  @page {
    size: A4 portrait;
    margin: 12mm 15mm 15mm 15mm;
  }

  /* Universal monochrome reset: force all text to solid black and kill dark backgrounds */
  *, *::before, *::after {
    color: #000000 !important;
    background-color: transparent !important;
    background-image: none !important;
    box-shadow: none !important;
    text-shadow: none !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  html, body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 9pt !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif !important;
  }

  .navbar, .hero, .ad-slot-header, .sidebar-sticky-rail, footer,
  .split-pane > div:first-child, .chart-box, #btnPrintMargin, article, button, input, select {
    display: none !important;
  }

  .container {
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .main-grid, .split-pane {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .calc-card, .results-card {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
  }

  .print-statement-header {
    display: block !important;
    margin-bottom: 16px !important;
    border-bottom: 2px solid #000000 !important;
    padding-bottom: 10px !important;
  }

  .print-header-top {
    display: flex !important;
    justify-content: space-between !important;
    align-items: flex-start !important;
  }

  .print-title {
    font-size: 16pt !important;
    font-weight: 800 !important;
    color: #000000 !important;
    margin: 0 0 3px 0 !important;
  }

  .print-subtitle {
    font-size: 8.5pt !important;
    color: #333333 !important;
  }

  .print-meta-info {
    text-align: right !important;
    font-size: 8pt !important;
    color: #000000 !important;
    line-height: 1.4 !important;
  }

  .print-params-card {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    background: #f4f4f4 !important;
    border: 1px solid #000000 !important;
    border-radius: 4px !important;
    padding: 8px 10px !important;
    margin: 12px 0 16px 0 !important;
    gap: 8px !important;
  }

  .print-param-item {
    font-size: 8.5pt !important;
  }

  .param-lbl {
    display: block !important;
    font-size: 6.5pt !important;
    color: #333333 !important;
    text-transform: uppercase !important;
    font-weight: 700 !important;
  }

  .param-val {
    font-family: monospace !important;
    font-weight: 700 !important;
    color: #000000 !important;
    font-size: 8.5pt !important;
  }

  .primary-kpi {
    background: #ffffff !important;
    border: 2px solid #000000 !important;
    border-radius: 4px !important;
    padding: 10px 16px !important;
    margin-bottom: 14px !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    text-align: left !important;
  }

  .primary-kpi-val {
    color: #000000 !important;
    font-size: 20pt !important;
    font-weight: 800 !important;
    font-family: monospace !important;
    line-height: 1 !important;
  }

  .kpi-grid {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 8px !important;
    margin-bottom: 16px !important;
  }

  .kpi-box {
    background: #ffffff !important;
    border: 1px solid #888888 !important;
    border-radius: 4px !important;
    padding: 8px 10px !important;
  }

  .kpi-lbl {
    font-size: 6.5pt !important;
    color: #333333 !important;
    text-transform: uppercase !important;
    font-weight: 700 !important;
  }

  .kpi-num {
    color: #000000 !important;
    font-size: 10.5pt !important;
    font-weight: 800 !important;
    font-family: monospace !important;
  }

  /* Itemized Table: Pure Black & White */
  .print-itemized-section {
    display: block !important;
    margin-top: 12px !important;
    page-break-inside: avoid !important;
  }

  .print-itemized-table {
    width: 100% !important;
    border-collapse: collapse !important;
    border: 1.5px solid #000000 !important;
    background: #ffffff !important;
  }

  .print-itemized-table td {
    padding: 6px 10px !important;
    font-size: 8pt !important;
    border: 1px solid #cccccc !important;
    color: #000000 !important;
    background: #ffffff !important;
  }

  .print-itemized-table tr[style*="font-weight"], 
  .print-itemized-table tr:last-child {
    background: #f0f0f0 !important;
    border-top: 1.5px solid #000000 !important;
    border-bottom: 1.5px solid #000000 !important;
  }

  .print-itemized-table tr[style*="font-weight"] td,
  .print-itemized-table tr:last-child td {
    background: #f0f0f0 !important;
    color: #000000 !important;
    font-weight: 800 !important;
  }

  .print-statement-footer {
    display: block !important;
    margin-top: 20px !important;
    padding-top: 10px !important;
    border-top: 1px solid #000000 !important;
    font-size: 7.5pt !important;
    color: #333333 !important;
    line-height: 1.35 !important;
  }
}