/*─────────────────── Variables ───────────────────*/
:root {
  /* Brand */
  --brand-primary:   #00b7ff;
  --brand-secondary: #34495e;

  /* Semantic colors */
  --success:         #2ecc71;
  --success-light:   rgba(46, 204, 113, 0.2);
  --error:           #ff6347;
  --error-light:     rgba(255,  99,  71, 0.2);

  /* Grays */
  --gray-100:        #f5f7fa;
  --gray-300:        #d1d9e6;
  --gray-800:        #2c3e50;
  --white:           #ffffff;

  /* Spacing & sizing */
  --radius:          8px;
  --spacing:         16px;

  /* Typography */
  --font-sans:       "Roboto", sans-serif;
}


/*─────────────────── Reset & Base ───────────────────*/
*,
*::before,
*::after {
  box-sizing: border-box;
}

body, h1, h2, h3, p, ul, ol, figure {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  line-height: 1.5;
  color: var(--gray-800);
  background-color: var(--white);
}

a {
  color: inherit;
  text-decoration: none;
}


/*─────────────────── Layout ───────────────────*/
.header {
  background-color: var(--white);
  border-bottom: 1px solid var(--gray-300);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--spacing) 0;
}

.header__inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing);
  display: flex;
  align-items: center;
}

.header__brand {
  display: flex;
  align-items: center;
}

.header__brand img {
  height: 40px;
  margin-right: var(--spacing);
}

.header__brand .title {
  font-size: 1.25rem;
  color: var(--brand-primary);
}


/*─────────────────── Container & Cards ───────────────────*/
.container {
  max-width: 1000px;
  margin: var(--spacing) auto;
  padding: 0 var(--spacing);
}

.card {
  background-color: var(--gray-100);
  border-radius: var(--radius);
  padding: var(--spacing);
  margin-bottom: var(--spacing);
}


/*─────────────────── Typography ───────────────────*/
.title {
  font-size: 1rem;
  color: var(--brand-primary);
  text-align: center;
  margin-bottom: var(--spacing);
}

.context {
  font-size: 0.9rem;
  color: var(--brand-secondary);
  text-align: center;
  margin-bottom: var(--spacing);
}


/*─────────────────── Inputs ───────────────────*/
.inputs .grid {
  display: grid;
  gap: var(--spacing);
  grid-template-columns: 1fr;
}

label {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  color: var(--brand-secondary);
}

label input {
  margin-top: 4px;
  padding: 8px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 1rem;
  width: 100%;
}


/*─────────────────── Tables ───────────────────*/
.table-section h2 {
  margin-bottom: var(--spacing);
  font-size: 1.1rem;
  color: var(--brand-secondary);
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead {
  background-color: var(--brand-primary);
  color: var(--white);
}

thead th {
  padding: 8px;
  text-align: left;
}

tbody td {
  padding: 8px;
  border-top: 1px solid var(--gray-300);
}


/*─────────────────── Charts ───────────────────*/
.charts h2 {
  margin-bottom: var(--spacing);
  font-size: 1.1rem;
  color: var(--brand-secondary);
}

.kpis {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  margin-bottom: var(--spacing);
}

.kpis > div {
  flex: 1 1 30%;
  text-align: center;
  font-size: 0.95rem;
}


/*─────────────────── Notes ───────────────────*/
.notes h3 {
  margin-bottom: 8px;
  color: var(--brand-secondary);
}

.notes ul {
  list-style: disc inside;
  font-size: 0.85rem;
  color: var(--brand-secondary);
}

.notes li + li {
  margin-top: 4px;
}


/*─────────────────── Utilities ───────────────────*/
/* Bold the entire last column */
.table-section tbody td:last-child {
  font-weight: 700;
}

/* Emphasize specific net-profit or margin cells */
.highlight {
  background-color: var(--success-light);
  border: 2px solid var(--success);
  border-radius: 4px;
  padding: 4px 6px;
  font-weight: 700;
}

/* Highlight the Traditional column for key rows */
.highlight-trad {
  background-color: var(--error-light);
  border: 2px solid var(--error);
  border-radius: 4px;
  padding: 4px 6px;
  font-weight: 700;
}


/*─────────────────── Responsive ───────────────────*/
@media (min-width: 600px) {
  .inputs .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .inputs .grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .kpis {
    justify-content: space-between;
  }
}


/* ─── Header branding ─── */
.header__inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.header__brand img {
  height: 60px;
  flex-shrink: 0;
}

.header-title {
  margin: 0 0 0 20px;          
  font-size: 2rem;         
  font-weight: 600;
  line-height: 1;             
  color: var(--brand-primary);
}


.page-title {
  font-size: 1.5rem;
  color: var(--brand-primary);
  text-align: center;
  margin: var(--spacing) 0;
}


.tool-description {
  max-width: 800px;
  margin: 0 auto var(--spacing);
  padding: var(--spacing);
  background-color: var(--bg-light);
  border-left: 4px solid var(--brand-primary);
  color: var(--text-color);
  font-size: 1rem;
  line-height: 1.6;
  border-radius: var(--radius);
}

.tool-description p + p {
  margin-top: var(--spacing);
}

.tool-description ul {
  margin: var(--spacing) 0;
  padding-left: var(--spacing);
  list-style: disc inside;
}

.tool-description ul li {
  margin-bottom: 0.5rem;
}

.tool-description strong {
  color: var(--brand-secondary);
}
/* === Bold Net Profit & Profit Margin rows === */
.table-section tbody tr:nth-child(5) td,
.table-section tbody tr:nth-child(8) td {
  font-weight: 700;
}

.calculator-insights {
  font-size: 0.95rem;
  color: var(--brand-secondary);
  line-height: 1.6;
}

.calculator-insights h2 {
  margin-top: var(--spacing);
  font-size: 1.2rem;
  color: var(--brand-primary);
}

.calculator-insights ul {
  margin: var(--spacing) 0;
  padding-left: var(--spacing);
  list-style: disc inside;
}

.calculator-insights ul ul {
  margin-top: 0.3rem;
  margin-left: 1rem;
  list-style-type: circle;
}

.calculator-insights li + li {
  margin-top: 0.4rem;
}

.kpi-table-wrapper {
  overflow-x: auto;
  margin-top: var(--spacing);
}

.kpi-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background-color: #fff;
}

.kpi-table th,
.kpi-table td {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  text-align: left;
  vertical-align: top;
}

.kpi-table th {
  background-color: var(--brand-primary);
  color: var(--white);
  font-weight: 600;
}

.kpi-table td:first-child {
  font-weight: 600;
  width: 160px;
}
.styled-select {
  margin-top: 4px;
  padding: 8px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 1rem;
  width: 100%;
  background-color: #fff;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}



.kpi-frequency-label h2.title {
  font-size: 1.25rem;
  color: var(--brand-primary);
  text-align: center;
  margin-top: var(--spacing);
  margin-bottom: var(--spacing);
}


.time-pill {
  display: inline-block;
  background-color: var(--brand-primary);
  color: white;
  font-weight: 500;
  font-size: 1rem;
  padding: 4px 10px;
  margin-left: 10px;
  border-radius: 999px;
  border: 1px solid white;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  vertical-align: middle;
}


.kpi-cards {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
}

.kpi-card {
  flex: 1;
  background: #fff;
  border-radius: 0.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  padding: 1rem 1.5rem;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.kpi-card h3 {
  margin: 0;
  font-size: 0.9rem;
  color: var(--brand-primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kpi-card p {
  margin: 0.5rem 0 0;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--brand-secondary);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}



.card.inputs .grid label {
  display: block;          
  font-weight: 500;         
  color: var(--brand-secondary);
  margin-bottom: 0.5rem;
}