/* =============================================
   THE NEW BUILD ADVANTAGE™
   Brand: Black, Gold (#C5A95E), White
   Fonts: Bebas Neue (display), DM Sans (body)
   ============================================= */

:root {
  --black: #000000;
  --gold: #C5A95E;
  --gold-light: #D4BE7E;
  --gold-dark: #A8903E;
  --gold-bg: rgba(197,169,94,0.08);
  --gold-border: rgba(197,169,94,0.25);
  --white: #FFFFFF;
  --off-white: #FAFAF8;
  --gray-50: #F5F5F3;
  --gray-100: #EEEDE9;
  --gray-200: #D8D6D0;
  --gray-300: #B8B5AD;
  --gray-400: #8A8780;
  --gray-500: #6B6860;
  --gray-600: #4A4840;
  --gray-700: #333230;
  --gray-800: #1A1918;
  --green: #2E7D32;
  --green-bg: rgba(46,125,50,0.08);
  --red: #C62828;
  --red-bg: rgba(198,40,40,0.08);

  --font-display: 'Bebas Neue', 'Arial Black', sans-serif;
  --font-body: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: 200ms ease;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--off-white);
  min-height: 100dvh;
}

.gold { color: var(--gold); }

/* ===== HEADER ===== */
.site-header {
  background: var(--black);
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 3px solid var(--gold);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 2.5px;
  color: var(--white);
  line-height: 1.1;
}

.logo-sub {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--gray-400);
  text-transform: uppercase;
}

/* ===== TABS ===== */
.tab-nav {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  gap: 0;
  padding: 24px 24px 0;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 20px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 1.5px;
  border: 2px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-500);
  cursor: pointer;
  transition: all var(--transition);
}

.tab-btn:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.tab-btn:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
  border-left: none;
}

.tab-btn:hover {
  color: var(--gray-700);
  background: var(--gray-50);
}

.tab-btn.active {
  background: var(--black);
  color: var(--gold);
  border-color: var(--black);
}

.tab-btn .tab-icon {
  display: flex;
  align-items: center;
}

.tab-content {
  display: none;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

.tab-content.active {
  display: block;
}

/* ===== TAB INTRO ===== */
.tab-intro {
  text-align: center;
  padding: 32px 0 24px;
}

.tab-intro h1 {
  font-family: var(--font-display);
  font-size: 32px;
  letter-spacing: 2px;
  color: var(--black);
  margin-bottom: 8px;
}

.tab-intro p {
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  font-size: 15px;
}

/* ===== FORMS ===== */
.calc-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-section {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.form-section legend {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 1.5px;
  color: var(--black);
  padding: 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--gold);
  color: var(--black);
  font-family: var(--font-display);
  font-size: 16px;
  border-radius: 50%;
}

.form-grid {
  display: grid;
  gap: 16px;
  margin-top: 16px;
}

.form-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.form-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.field .optional {
  font-weight: 400;
  text-transform: none;
  color: var(--gray-400);
  font-size: 11px;
}

.field input,
.field select {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--gray-700);
  background: var(--white);
  transition: border-color var(--transition);
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(197,169,94,0.15);
}

.field input::placeholder {
  color: var(--gray-300);
}

/* Section color accents */
.new-section { border-left: 4px solid var(--gold); }
.resale-section { border-left: 4px solid var(--gray-400); }
.home-a-section { border-left: 4px solid var(--gray-400); }
.home-b-section { border-left: 4px solid var(--gold); }

/* ===== FORM ACTIONS ===== */
.form-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  padding: 8px 0;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gold);
  color: var(--black);
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 1.5px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 400;
}

.btn-primary:hover {
  background: var(--gold-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  background: transparent;
  color: var(--gray-500);
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 1px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-secondary:hover {
  border-color: var(--gray-400);
  color: var(--gray-700);
}

/* ===== RESULTS PANEL ===== */
.results-panel {
  margin-top: 32px;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.results-header {
  text-align: center;
  margin-bottom: 24px;
}

.results-header h2 {
  font-family: var(--font-display);
  font-size: 32px;
  letter-spacing: 2px;
  color: var(--black);
}

.results-header p {
  color: var(--gray-500);
  font-size: 15px;
  margin-top: 4px;
}

/* ===== HERO NUMBERS ===== */
.hero-numbers {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-card.accent {
  background: var(--black);
  border-color: var(--gold);
}

.hero-card.accent .hero-label {
  color: var(--gray-400);
}

.hero-card.accent .hero-value {
  color: var(--gold);
}

.hero-card.accent .hero-sub {
  color: var(--gray-400);
}

.hero-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
}

.hero-value {
  font-family: var(--font-display);
  font-size: 36px;
  letter-spacing: 1px;
  color: var(--black);
  line-height: 1.1;
}

.hero-sub {
  font-size: 12px;
  color: var(--gray-400);
}

/* ===== COMPARISON TABLE ===== */
.comparison-table-wrap {
  overflow-x: auto;
  margin-bottom: 32px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.comparison-table th {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 1.5px;
  padding: 12px 16px;
  text-align: left;
}

.comparison-table th.col-new { color: var(--gold); }
.comparison-table th.col-diff { text-align: right; }

.comparison-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--gray-100);
}

.comparison-table tr:nth-child(even) {
  background: var(--gray-50);
}

.comparison-table td:last-child {
  text-align: right;
  font-weight: 600;
}

.comparison-table .positive {
  color: var(--green);
}

.comparison-table .negative {
  color: var(--red);
}

.comparison-table .section-header td {
  background: var(--gold-bg);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--gold-dark);
  padding: 8px 16px;
  border-bottom: 2px solid var(--gold-border);
}

/* ===== HIDDEN COSTS ===== */
.hidden-costs-section,
.incentive-section,
.projection-section {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.hidden-costs-section h3,
.incentive-section h3,
.projection-section h3 {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 1.5px;
  color: var(--black);
  margin-bottom: 4px;
}

.section-desc {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 16px;
}

.hidden-costs-grid,
.projection-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cost-item,
.projection-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--red-bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--red);
}

.projection-item {
  background: var(--gray-50);
  border-left-color: var(--gold);
}

.projection-item.savings {
  background: var(--green-bg);
  border-left-color: var(--green);
}

.cost-item-label,
.projection-item-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
}

.cost-item-value {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--red);
}

.projection-item-value {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--gray-700);
}

.projection-item.savings .projection-item-value {
  color: var(--green);
}

/* ===== INCENTIVE SECTION ===== */
.incentive-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.incentive-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--gold-bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gold);
}

.incentive-item-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
}

.incentive-item-value {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--gold-dark);
}

.incentive-total,
.projection-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--black);
  color: var(--gold);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 1px;
}

.breakeven-text {
  text-align: center;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gold-dark);
  font-style: italic;
}

/* ===== SHOWDOWN BREAKDOWN ===== */
.showdown-breakdown {
  margin-bottom: 32px;
}

.showdown-category {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
}

.showdown-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-100);
  cursor: pointer;
}

.showdown-cat-header:hover {
  background: var(--gray-100);
}

.showdown-cat-title {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 1px;
  color: var(--black);
}

.showdown-cat-scores {
  display: flex;
  gap: 20px;
  font-size: 13px;
  font-weight: 600;
}

.showdown-cat-scores .score-a { color: var(--gray-500); }
.showdown-cat-scores .score-b { color: var(--gold-dark); }
.showdown-cat-scores .winner-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.winner-badge.a-wins { background: var(--gray-200); color: var(--gray-700); }
.winner-badge.b-wins { background: var(--gold); color: var(--black); }
.winner-badge.tie { background: var(--gray-100); color: var(--gray-500); }

.showdown-cat-details {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.showdown-cat-details.open {
  max-height: 600px;
  padding: 16px 20px;
}

.showdown-feature-row {
  display: grid;
  grid-template-columns: 1fr 80px 80px;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--gray-50);
  font-size: 13px;
  align-items: center;
}

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

.feature-name { color: var(--gray-600); }
.feature-score {
  text-align: center;
  font-weight: 700;
}
.feature-score.high { color: var(--green); }
.feature-score.low { color: var(--red); }
.feature-score.mid { color: var(--gray-500); }

/* ===== SCORING SECTION (form) ===== */
.scoring-instructions {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 12px;
  margin-bottom: 8px;
}

.scoring-category {
  margin-top: 20px;
}

.scoring-category-title {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 1px;
  color: var(--gold-dark);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--gold-border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.scoring-category-title svg {
  width: 18px;
  height: 18px;
  color: var(--gold);
}

.scoring-row {
  display: grid;
  grid-template-columns: 1fr 100px 100px;
  gap: 10px;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid var(--gray-50);
}

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

.scoring-feature-name {
  font-size: 13px;
  color: var(--gray-600);
}

.scoring-row select {
  padding: 6px 8px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-body);
  background: var(--white);
  color: var(--gray-700);
  text-align: center;
}

.scoring-row select:focus {
  outline: none;
  border-color: var(--gold);
}

.scoring-row-header {
  display: grid;
  grid-template-columns: 1fr 100px 100px;
  gap: 10px;
  padding: 4px 0 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gray-400);
}

.scoring-row-header span:nth-child(2),
.scoring-row-header span:nth-child(3) {
  text-align: center;
}

/* ===== RESULTS ACTIONS ===== */
.results-actions {
  display: flex;
  justify-content: center;
  padding: 16px 0;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--black);
  color: var(--gray-400);
  text-align: center;
  padding: 24px;
  font-size: 13px;
  border-top: 3px solid var(--gold);
}

.footer-disclaimer {
  margin-top: 8px;
  font-size: 11px;
  color: var(--gray-500);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== GRADE BADGES ===== */
.grade-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
}

.grade-a { background: #2E7D32; color: white; }
.grade-b { background: #558B2F; color: white; }
.grade-c { background: #F9A825; color: var(--black); }
.grade-d { background: #E65100; color: white; }
.grade-f { background: #C62828; color: white; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .form-grid.cols-3 { grid-template-columns: 1fr; }
  .form-grid.cols-2 { grid-template-columns: 1fr; }
  .hero-numbers { grid-template-columns: 1fr; }
  .hidden-costs-grid,
  .projection-grid { grid-template-columns: 1fr; }

  .tab-btn { font-size: 14px; padding: 10px 12px; }
  .logo-title { font-size: 16px; letter-spacing: 1.5px; }

  .hero-value { font-size: 28px; }
  .tab-intro h1 { font-size: 24px; }

  .scoring-row {
    grid-template-columns: 1fr 70px 70px;
  }

  .showdown-feature-row {
    grid-template-columns: 1fr 60px 60px;
  }
}

@media (max-width: 480px) {
  .tab-nav { flex-direction: column; gap: 4px; padding: 12px 12px 0; }
  .tab-btn:first-child { border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
  .tab-btn:last-child { border-radius: 0 0 var(--radius-lg) var(--radius-lg); border-left: 2px solid var(--gray-200); }
  .tab-btn.active:last-child { border-left-color: var(--black); }
  .tab-content { padding: 0 12px 24px; }
  .form-section { padding: 16px; }
}