/* ============================================================
   Remodel Cost Calculator — Shared Design System
   https://remodelcostcalc.com

   Brand colors:
     --accent: #1e3a5f (deep navy)
     --accent-dark: #152a45 (darker nav/hover)
     --accent-light: #e8eef5 (tinted backgrounds)

   All pages use the same navy brand color.
   No per-page color overrides.
   ============================================================ */

:root {
  --accent: #1e3a5f;
  --accent-dark: #152a45;
  --accent-light: #e8eef5;
  --accent-border: #b8cce0;
  --body-bg: #f0f4f8;
  --card-bg: #ffffff;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border: #e2e8f0;
  --border-light: #edf2f7;
  --footer-bg: #1a202c;
  --footer-text: #a0aec0;
  --footer-link: #90cdf4;
  --green-bg: #f0fff4;
  --green-border: #48bb78;
  --green-text: #276749;
  --red-bg: #fff5f5;
  --red-border: #fc8181;
  --red-text: #9b2c2c;
  --blue-bg: #eff6ff;
  --blue-border: #93c5fd;
  --blue-text: #1e40af;
  --warning-bg: #fffaf0;
  --warning-border: #fbd38d;
  --warning-text: #744210;
  --container-width: 900px;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

/* ============================================================
   BODY
   ============================================================ */
body {
  font-family: var(--font-stack);
  background: var(--body-bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

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

/* ============================================================
   HEADER
   ============================================================ */
header {
  background: var(--accent);
  color: white;
  padding: 18px 20px;
  text-align: center;
}

header h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

header p {
  font-size: 15px;
  opacity: 0.9;
  margin-top: 4px;
}

header a {
  color: white;
  text-decoration: none;
}

/* ============================================================
   NAVIGATION — horizontal with hamburger on mobile
   ============================================================ */
nav {
  background: var(--accent-dark);
  padding: 0 20px;
  position: relative;
}

nav .nav-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}

nav a {
  color: white;
  text-decoration: none;
  font-size: 14px;
  padding: 10px 14px;
  opacity: 0.9;
  transition: opacity 0.15s, background 0.15s;
  white-space: nowrap;
}

nav a:hover,
nav a.active {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
}

nav a.active {
  font-weight: 600;
}

/* Coming soon badge in nav */
nav a .soon {
  font-size: 9px;
  background: rgba(255, 255, 255, 0.2);
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
  font-weight: 600;
  letter-spacing: 0.3px;
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 10px;
  line-height: 1;
}

/* ============================================================
   PRIVACY NOTE BAR
   ============================================================ */
.privacy-note {
  background: var(--accent-light);
  border-bottom: 1px solid var(--accent-border);
  padding: 8px 20px;
  text-align: center;
  font-size: 13px;
  color: var(--accent);
}

/* ============================================================
   CONTAINER
   ============================================================ */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 24px;
  margin-bottom: 20px;
}

.card h2 {
  font-size: 20px;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent-border);
}

.card h3 {
  font-size: 16px;
  color: var(--accent-dark);
  margin: 16px 0 10px;
}

.card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-group select,
.form-group input[type="number"],
.form-group input[type="text"],
.form-group input[type="email"] {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  color: var(--text-primary);
  background: white;
  font-family: var(--font-stack);
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.15);
}

/* Slider */
.slider-group {
  margin-bottom: 16px;
}

.slider-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.slider-group label span {
  color: var(--accent);
  font-weight: 700;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

/* Size presets */
.size-presets {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.size-presets button {
  padding: 10px 16px;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: white;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.15s;
  font-family: var(--font-stack);
}

.size-presets button.active {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
}

.size-presets button:hover:not(.active) {
  border-color: var(--accent-border);
  background: var(--accent-light);
}

/* Toggle group */
.toggle-group {
  display: flex;
  gap: 0;
  border: 2px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  width: fit-content;
}

.toggle-group button {
  padding: 10px 20px;
  border: none;
  background: white;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.15s;
  font-family: var(--font-stack);
}

.toggle-group button.active {
  background: var(--accent);
  color: white;
}

/* Advanced settings */
.advanced-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  width: 100%;
  text-align: left;
  margin-top: 8px;
  font-family: var(--font-stack);
}

.advanced-toggle:hover {
  background: var(--accent-light);
}

.advanced-section {
  display: none;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 16px;
}

.advanced-section.open {
  display: block;
}

.price-override {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.price-override .form-group input {
  font-size: 13px;
  padding: 8px 10px;
}

.price-override .form-group label {
  font-size: 11px;
}

/* ============================================================
   DISCLAIMERS & NOTICES
   ============================================================ */
.disclaimer {
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--accent-dark);
  margin-top: 12px;
}

.disclaimer a {
  color: var(--accent);
}

/* ============================================================
   RESULTS SECTION
   ============================================================ */
.results-section {
  display: none;
}

.results-section.visible {
  display: block;
}

.chart-container {
  position: relative;
  width: 100%;
  height: 300px;
  margin-bottom: 20px;
}

.chart-container canvas {
  width: 100%;
  height: 100%;
}

/* Savings banner */
.savings-banner {
  padding: 16px 20px;
  border-radius: 8px;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}

.savings-banner.green {
  background: var(--green-bg);
  border: 2px solid var(--green-border);
  color: var(--green-text);
}

.savings-banner.red {
  background: var(--red-bg);
  border: 2px solid var(--red-border);
  color: var(--red-text);
}

.savings-banner .amount {
  font-size: 28px;
  display: block;
  margin-top: 4px;
}

.savings-banner .sub {
  font-size: 14px;
  font-weight: 400;
  display: block;
  margin-top: 4px;
}

/* ============================================================
   BREAKDOWN TABLE
   ============================================================ */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.breakdown-table th {
  text-align: left;
  padding: 10px 12px;
  background: #f7fafc;
  border-bottom: 2px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.breakdown-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-light);
}

.breakdown-table tr.cheapest {
  background: var(--green-bg);
}

.breakdown-table tr.best-value {
  background: var(--blue-bg);
}

.breakdown-table tr.selected {
  background: var(--blue-bg);
}

.breakdown-table tr.current {
  background: var(--red-bg);
}

.breakdown-table .cost {
  text-align: right;
  font-weight: 600;
  font-family: var(--font-mono);
}

.breakdown-table .tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
}

.breakdown-table .tag.cheapest-tag {
  background: #c6f6d5;
  color: #276749;
}

.breakdown-table .tag.current-tag {
  background: #fed7d7;
  color: #9b2c2c;
}

.breakdown-table .tag.value-tag {
  background: #dbeafe;
  color: #1e40af;
}

.breakdown-table .tag.selected-tag {
  background: #dbeafe;
  color: #1e40af;
}

/* ============================================================
   CTA BOX
   ============================================================ */
.cta-box {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  border-radius: 8px;
  padding: 20px 24px;
  text-align: center;
  margin-top: 20px;
}

.cta-box h3 {
  color: white;
  font-size: 18px;
  margin-bottom: 8px;
}

.cta-box p {
  color: white;
  opacity: 0.9;
  font-size: 14px;
  margin-bottom: 12px;
}

.cta-box a {
  display: inline-block;
  background: white;
  color: var(--accent);
  padding: 10px 24px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  font-size: 15px;
}

.cta-box a:hover {
  background: var(--accent-light);
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.faq-q {
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2d3748;
}

.faq-q::after {
  content: '+';
  font-size: 20px;
  color: var(--accent);
  transition: transform 0.2s;
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-q.open::after {
  content: '\2212';
}

.faq-a {
  display: none;
  padding: 10px 0 4px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-a.open {
  display: block;
}

.faq-a a {
  color: #2b6cb0;
}

/* ============================================================
   CROSS-LINKS SECTION (shared across calculator pages)
   ============================================================ */
.cross-links {
  margin-top: 20px;
}

.cross-links h2 {
  font-size: 20px;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-align: center;
}

.cross-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cross-link-card {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 20px;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s;
  display: block;
}

.cross-link-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.cross-link-card .icon {
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
}

.cross-link-card .icon svg {
  width: 32px;
  height: 32px;
}

.cross-link-card h3 {
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 6px;
}

.cross-link-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  text-align: center;
  padding: 24px 20px;
  font-size: 13px;
  margin-top: 40px;
}

footer a {
  color: var(--footer-link);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer p + p {
  margin-top: 6px;
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 768px) {
  header h1 {
    font-size: 22px;
  }

  header p {
    font-size: 14px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .price-override {
    grid-template-columns: 1fr 1fr;
  }

  .chart-container {
    height: 260px;
  }

  .savings-banner {
    font-size: 16px;
  }

  .savings-banner .amount {
    font-size: 24px;
  }

  .breakdown-table {
    font-size: 12px;
  }

  .breakdown-table th,
  .breakdown-table td {
    padding: 8px 6px;
  }

  .size-presets button {
    padding: 8px 12px;
    font-size: 13px;
  }

  /* Hamburger visible */
  .nav-toggle {
    display: block;
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
  }

  nav {
    padding: 0;
  }

  nav .nav-inner {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding-bottom: 8px;
  }

  nav .nav-inner.open {
    display: flex;
  }

  nav a {
    padding: 12px 20px;
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  nav a:last-child {
    border-bottom: none;
  }

  /* Spacer for hamburger button */
  nav::before {
    content: '';
    display: block;
    height: 44px;
  }

  .cross-links-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 480px) {
  .price-override {
    grid-template-columns: 1fr;
  }

  .chart-container {
    height: 240px;
  }

  .size-presets {
    gap: 6px;
  }

  .size-presets button {
    flex: 1;
    min-width: calc(50% - 6px);
    padding: 8px 8px;
    font-size: 12px;
  }

  .container {
    padding: 12px;
  }

  .card {
    padding: 16px;
  }

  .cross-links-grid {
    grid-template-columns: 1fr;
  }
}