/* =============================================================
   SILICON RIGS™ - CORE STYLESHEET (HYBRID LEAN PERFORMANCE)
   - Brand Display: Orbitron (Logo & Digital Pass Marks only)
   - Interface & Content: High-Velocity Native System Stack
============================================================= */

:root {
  /* Obsidian & Gunmetal Foundations */
  --bg: #07080B;
  --card-bg: #0E1118;
  --card-surface: #111622;
  --card-border: #1E293B;
  --border-titanium: #2A3649;
  
  /* Molten Ember Brand Palette */
  --accent: #FF5500;
  --accent-hover: #FF6B1A;
  --tag-bg: rgba(255, 85, 0, 0.12);
  --cyan-telemetry: #00E5FF;
  --green-confirmed: #00E676;

  /* Typography Colors */
  --text: #F8FAFC;
  --muted: #94A3B8;
  --label-dim: #64748B;

  /* Typography Stacks */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-brand: 'Orbitron', var(--font-mono);
}

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

a,
button,
select,
input {
  touch-action: manipulation;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

html,
body {
  overflow-x: hidden;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-system);
  font-size: 15px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar {
  width: 0.65rem;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  border: 2px solid var(--bg);
  border-radius: 9999px;
  background: var(--card-border);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* -------------------------------------------------------------
   GLOBAL HEADER & BRAND LOGO
------------------------------------------------------------- */
header {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--card-border);
  background: rgba(7, 8, 11, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 90;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-brand);
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 2px;
  color: #F8FAFC;
  text-decoration: none !important;
  border-bottom: none !important;
  display: inline-flex;
  align-items: center;
}

.logo span {
  color: var(--accent);
}

.logo sup {
  font-family: var(--font-system);
  font-size: 0.55em;
  font-weight: 700;
  color: var(--muted);
  margin-left: 3px;
  vertical-align: super;
}

.nav-link {
  color: var(--muted);
  font-family: var(--font-system);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

/* -------------------------------------------------------------
   HERO & SECTION HEADINGS (Clean Native System Typography)
------------------------------------------------------------- */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
}

.badge {
  display: inline-block;
  font-family: var(--font-system);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  background: var(--tag-bg);
  color: var(--accent);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(255, 85, 0, 0.25);
}

h1 {
  font-family: var(--font-system);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
  color: #FFFFFF;
}

h2 {
  font-family: var(--font-system);
  font-size: clamp(1.45rem, 2.5vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

h3, h4 {
  font-family: var(--font-system);
  font-weight: 700;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 2rem;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--accent);
  color: #F8FAFC;
  font-family: var(--font-system);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.25;
  box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
  transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.cta-btn:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 6px 20px rgba(255, 85, 0, 0.5);
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-system);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.25;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.secondary-btn:hover {
  background: var(--tag-bg);
}

.cta-btn:active,
.secondary-btn:active,
.card-btn:active,
.filter-button:active,
.floating-wa:active {
  transform: scale(0.98);
}

/* -------------------------------------------------------------
   PILLARS & FEATURES
------------------------------------------------------------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0 4.5rem;
}

.pillar-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1.35rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.pillar-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 8px 24px -6px rgba(255, 85, 0, 0.2);
}

.pillar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: #FFF;
}

.pillar-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.45;
}

.section-title {
  font-family: var(--font-system);
  font-size: clamp(1.6rem, 2.5vw, 2.25rem);
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.section-subtitle {
  text-align: center;
  color: var(--muted);
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}

/* -------------------------------------------------------------
   CALCULATOR COMPONENT
------------------------------------------------------------- */
.calculator {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 2.5rem;
  align-items: start;
  margin-bottom: 4.5rem;
  padding: 2.25rem;
  border: 1px solid var(--card-border);
  border-radius: 12px;
  background: var(--card-bg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.calculator-copy h2 {
  font-family: var(--font-system);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.65rem;
  color: #FFFFFF;
}

.calculator-copy p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.calculator-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calculator-fields {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calc-field-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.calc-field-group > label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.calculator select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: var(--bg);
  color: #FFFFFF;
  font-family: var(--font-system);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s ease;
}

.calculator select:focus {
  border-color: var(--accent);
}

.calc-addons-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.calc-addons-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.15rem;
}

.calc-addons-header span:first-child {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.calc-addons-header .badge-mini {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--label-dim);
  background: rgba(30, 41, 59, 0.6);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  border: 1px solid var(--card-border);
}

.calculator .calc-pill {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 0.75rem !important;
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  margin: 0 !important;
}

.calculator .calc-pill:hover {
  border-color: var(--border-titanium);
  background: #0f141f;
}

.calculator .calc-pill input[type="checkbox"] {
  width: 17px !important;
  min-width: 17px !important;
  max-width: 17px !important;
  height: 17px !important;
  min-height: 17px !important;
  margin: 0 !important;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.calculator .calc-pill .pill-text {
  font-size: 0.88rem;
  font-weight: 500;
  color: #E2E8F0;
  user-select: none;
  flex: 1;
}

.calculator .calc-pill .pill-cost {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-left: auto;
}

.quote-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--card-border);
  margin-top: 0.5rem;
}

.quote-summary span {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 500;
}

.quote-summary output {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--accent);
}

.calculator .cta-btn {
  width: 100%;
  margin-top: 0.5rem;
  font-size: 1rem;
  padding: 0.95rem 1.5rem;
}

/* -------------------------------------------------------------
   PRICING GRIDS & TIERS
------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.stage-block {
  margin-bottom: 3.5rem;
}

.stage-header {
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.stage-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--tag-bg);
  color: var(--accent);
  border: 1px solid rgba(255, 85, 0, 0.3);
}

.stage-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFF;
}

.pricing-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.pricing-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 8px 24px -6px rgba(255, 85, 0, 0.2);
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 24px -4px rgba(255, 85, 0, 0.25);
}

.launch-banner {
  margin-bottom: 1.25rem;
  padding: 0.75rem 0.85rem;
  background: rgba(255, 85, 0, 0.08);
  border: 1px solid rgba(255, 85, 0, 0.35);
  border-radius: 6px;
  font-size: 0.85rem;
  color: #F8FAFC;
  line-height: 1.45;
}

.launch-badge {
  display: inline-block;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.effective-note {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.25rem;
}

.card-badge {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  background: var(--tag-bg);
  color: var(--accent);
  border: 1px solid rgba(255, 85, 0, 0.35);
  margin-bottom: 0.75rem;
}

.card-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.price-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 0.25rem;
}

.price {
  font-family: var(--font-system);
  font-size: 1.9rem;
  font-weight: 800;
  color: #FFF;
  margin-bottom: 0.75rem;
}

.price span {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}

.tagline {
  font-size: 0.9rem;
  color: #F8FAFC;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.target-audience {
  font-size: 0.85rem;
  color: var(--muted);
  padding: 0.65rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  margin-bottom: 1.25rem;
  line-height: 1.45;
}

.target-audience strong {
  color: var(--accent);
}

.enhancements-section {
  margin: 4.5rem 0;
  padding: 2.25rem;
  background: rgba(14, 17, 24, 0.7);
  border: 1px solid var(--card-border);
  border-radius: 12px;
}

.enhancements-header {
  text-align: center;
  margin-bottom: 2rem;
}

.enhancements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.enhancement-card {
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.enhancement-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.enhancement-price {
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFF;
  margin: 0.35rem 0 0.75rem;
}

.enhancement-price del {
  color: var(--muted);
  font-size: 1rem;
  margin-right: 0.35rem;
  font-weight: 400;
}

.enhancement-card p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.45;
}

.boundary-card {
  margin: 2.5rem 0 3.5rem;
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, rgba(14, 17, 24, 0.9), rgba(7, 8, 11, 0.95));
  border: 1px solid var(--card-border);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
}

.boundary-card h3 {
  font-size: 1.05rem;
  color: #FFF;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}

.boundary-box {
  padding: 0.85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
}

.boundary-box strong {
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}

.feature-list {
  list-style: none;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.feature-list li {
  margin-bottom: 0.5rem;
  padding-left: 1.35rem;
  position: relative;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.card-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  text-decoration: none;
  font-family: var(--font-system);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--card-border);
  color: var(--text);
  cursor: pointer;
  line-height: 1.25;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.pricing-card.featured .card-btn {
  background: var(--accent);
  color: #F8FAFC;
  border-color: var(--accent);
}

.card-btn:hover {
  background: var(--accent-hover);
  color: #F8FAFC;
  border-color: var(--accent-hover);
  box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
}

/* -------------------------------------------------------------
   SHOWCASE & WORKFLOW
------------------------------------------------------------- */
.builds-showcase {
  margin-bottom: 5rem;
}

.builds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.build-card {
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
}

.build-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--card-bg);
  object-fit: cover;
}

.build-card figcaption {
  padding: 0.85rem 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 5rem;
}

.step-item {
  padding: 1.35rem;
  border-left: 2px solid var(--accent);
  background: rgba(14, 17, 24, 0.5);
  border-radius: 0 6px 6px 0;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.step-item:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 8px 24px -6px rgba(255, 85, 0, 0.2);
}

.step-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.step-item h4 {
  font-size: 1.05rem;
  color: #FFF;
  margin-bottom: 0.35rem;
}

.step-item p {
  font-size: 0.88rem;
  color: var(--muted);
}

/* -------------------------------------------------------------
   GALLERY PAGE & FILTERS
------------------------------------------------------------- */
.gallery-hero {
  padding: 4rem 0 2.5rem;
  text-align: center;
}

.gallery-hero p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--muted);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.filter-button {
  padding: 0.55rem 1rem;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  background: var(--card-bg);
  color: var(--muted);
  font-family: var(--font-system);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.filter-button[aria-pressed="true"],
.filter-button:hover {
  border-color: var(--accent);
  background: var(--tag-bg);
  color: var(--accent);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 5rem;
}

.portfolio-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
}

.portfolio-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.1rem;
}

.spec-badge {
  align-self: flex-start;
  padding: 0.3rem 0.55rem;
  border: 1px solid rgba(255, 85, 0, 0.25);
  border-radius: 4px;
  background: var(--tag-bg);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.35;
}

.thermal-metric {
  color: var(--muted);
  font-size: 0.85rem;
}

.portfolio-card .card-btn {
  margin-top: auto;
}

/* -------------------------------------------------------------
   TERMS & POLICIES CARDS
------------------------------------------------------------- */
.terms-page {
  padding: 3.5rem 0 5rem;
}

.terms-intro {
  max-width: 780px;
  margin: 0 auto 3rem;
  text-align: center;
}

.terms-intro h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
  color: #FFFFFF;
}

.terms-intro p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.policy-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 820px;
  margin: 0 auto;
}

.policy-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1.5rem 1.85rem;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.policy-item:hover {
  border-color: var(--border-titanium);
  transform: translateY(-2px);
}

.policy-item h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0;
}

.policy-item p {
  color: #CBD5E1;
  font-size: 0.92rem;
  line-height: 1.65;
  margin-top: 0.75rem;
}

.policy-item p strong {
  color: #FFFFFF;
  font-weight: 600;
}

.policy-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: #94A3B8;
  background: rgba(30, 41, 59, 0.7);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--card-border);
}

/* -------------------------------------------------------------
   BOOKING MODAL & ISOLATED CONTROLS
------------------------------------------------------------- */
.booking-modal {
  width: min(100% - 2rem, 540px);
  max-height: calc(100dvh - 2rem);
  margin: auto;
  padding: 1.75rem;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--text);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.85);
}

.booking-modal::backdrop {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.booking-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.booking-modal-header h2 {
  color: #FFF;
}

.modal-close {
  width: 44px;
  min-width: 44px;
  height: 44px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.15s ease;
}

.modal-close:hover {
  color: #FFF;
  border-color: var(--accent);
}

.booking-form {
  display: grid;
  gap: 1rem;
}

.booking-form label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}

.booking-form input:not([type="checkbox"]),
.booking-form select,
.booking-form textarea {
  width: 100%;
  min-height: 44px;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-system);
  font-size: 0.95rem;
  resize: vertical;
}

.booking-form textarea {
  min-height: 90px;
}

.booking-form input:not([type="checkbox"]):focus,
.booking-form select:focus,
.booking-form textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.booking-form input[type="checkbox"] {
  width: 18px !important;
  min-width: 18px !important;
  max-width: 18px !important;
  height: 18px !important;
  min-height: 18px !important;
  margin: 0 !important;
  padding: 0 !important;
  accent-color: var(--accent);
  cursor: pointer;
}

.booking-form .terms-label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 400;
  line-height: 1.45;
  color: var(--muted);
}

.terms-label a {
  color: var(--accent);
  text-decoration: none;
}

.terms-label a:hover {
  text-decoration: underline;
}

.booking-form .cta-btn {
  justify-content: center;
  border: 0;
  cursor: pointer;
  margin-top: 0.5rem;
}

.booking-form .cta-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.booking-form [hidden] {
  display: none;
}

.booking-status {
  min-height: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.booking-status.is-error {
  color: #EF4444;
}

.shipping-notice {
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--accent);
  background: var(--tag-bg);
  color: var(--text);
  font-size: 0.85rem;
  border-radius: 0 6px 6px 0;
}

/* -------------------------------------------------------------
   FOOTER & FLOATING CTA
------------------------------------------------------------- */
footer {
  border-top: 1px solid var(--card-border);
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

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

.footer-note {
  margin-top: 0.5rem;
  font-size: 0.75rem;
}

.floating-wa {
  position: fixed;
  right: calc(1.25rem + env(safe-area-inset-right));
  bottom: calc(1.25rem + env(safe-area-inset-bottom));
  width: 50px;
  height: 50px;
  background: var(--accent);
  color: #FFF;
  text-decoration: none;
  border-radius: 50%;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: transform 0.15s ease, background 0.15s ease;
}

.floating-wa:hover {
  transform: scale(1.08);
  background: var(--accent-hover);
}

.floating-wa svg {
  width: 24px;
  height: 24px;
}

/* -------------------------------------------------------------
   RESPONSIVE BREAKPOINTS
------------------------------------------------------------- */
@media (max-width: 860px) {
  .calculator {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 3.5rem 0 2.5rem;
  }

  .nav {
    gap: 0.75rem;
  }

  .nav-link,
  .cta-btn,
  .secondary-btn,
  .card-btn,
  .calculator select,
  .floating-wa {
    min-height: 44px;
  }

  .nav-link {
    display: inline-flex;
    align-items: center;
  }

  main {
    padding-bottom: 5.5rem;
  }
}

@media (max-width: 480px) {
  header {
    padding: 1rem 0;
  }

  .nav {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
}