/* =============================================================
   HVAC BOOKING ENGINE
   Dark premium — Warm Charcoal + Gold Authority
   Single typeface: Outfit (geometric, tight-tracked, premium)
   Design spec: HVAC_Landing_Page_Design_Inspiration_Brief.md
   ============================================================= */

/* -------------------------------------------------------------
   Design Tokens — from research brief section 1
   ------------------------------------------------------------- */
:root {
  /* Surfaces — warm undertones, never pure black */
  --bg:          #1C1917;
  --bg-elevated: #292524;
  --bg-deep:     #0C0A09;

  /* Text — warm white, high contrast against bg */
  --text:        #FAFAF9;
  --text-2:      #A8A29E;
  --text-3:      #78716C;

  /* Accent — soft gold, premium authority */
  --gold:        #D4A574;
  --gold-light:  #E8B882;
  --gold-dim:    rgba(212, 165, 116, 0.15);
  --gold-glow:   rgba(212, 165, 116, 0.10);

  /* Borders — opacity-based for flexibility */
  --border:      rgba(255, 255, 255, 0.06);
  --border-2:    rgba(255, 255, 255, 0.12);

  /* Radii — slightly rounded, not pills */
  --r:    8px;
  --r-lg: 12px;
  --r-xl: 16px;

  /* Shadows */
  --shadow:      0 2px 8px rgba(0,0,0,0.3), 0 12px 40px rgba(0,0,0,0.25);
  --shadow-gold: 0 4px 20px rgba(212, 165, 116, 0.3);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Layout */
  --max-w: 1160px;
  --gutter: 24px;
}

/* -------------------------------------------------------------
   Reset
   ------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

body.no-scroll { overflow: hidden; }

/* -------------------------------------------------------------
   Base
   ------------------------------------------------------------- */
body {
  font-family: 'Outfit', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Noise texture overlay — adds tactile grain (2-4% per brief) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* -------------------------------------------------------------
   Layout
   ------------------------------------------------------------- */
.container {
  width: min(var(--max-w), calc(100% - var(--gutter) * 2));
  margin: 0 auto;
}

/* Brief: 120-160px padding for dark backgrounds */
.section       { padding: 140px 0; }
.section--deep { background: var(--bg-deep); }

/* -------------------------------------------------------------
   Typography — Outfit, single typeface, tight tracking
   Brief sections 2 & 9: tight letter-spacing is the single
   biggest difference between premium and generic
   ------------------------------------------------------------- */
h1, h2, h3 {
  font-family: 'Outfit', system-ui, sans-serif;
  color: var(--text);
  font-weight: 700;
}

h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

p, li {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-2);
}

/* Brief: label/caption = 13-14px, weight 500, 0.01em+, uppercase */
.label {
  display: block;
  margin-bottom: 16px;
  color: var(--gold);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-head {
  margin-bottom: 64px;
  max-width: 600px;
}

/* -------------------------------------------------------------
   Navigation — transparent → blur on scroll (brief section 7)
   ------------------------------------------------------------- */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}

.topbar.scrolled {
  background: rgba(28, 25, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand img {
  width: 28px;
  height: 28px;
}

.topbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.topbar-links a {
  text-decoration: none;
  color: var(--text-3);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--r);
  transition: color 0.2s ease, background 0.2s ease;
}

.topbar-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

/* Nav CTA — smaller version of primary gold button (brief section 7) */
.topbar-links .topbar-cta {
  margin-left: 12px;
  padding: 8px 20px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  background: var(--gold);
  color: var(--bg-deep);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--r);
  letter-spacing: -0.01em;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.topbar-links .topbar-cta:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-gold);
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

/* -------------------------------------------------------------
   Hero — brief section 3
   Left-aligned, gradient text, glow, animated grid
   ------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 168px 0 128px;
  background: var(--bg);
}

/* Radial glow behind headline (brief 8.1 — Glyphic/Vapi-style) */
.hero-glow {
  position: absolute;
  width: 55%;
  height: 90%;
  top: 5%;
  left: 22%;
  background: radial-gradient(ellipse, rgba(212, 165, 116, 0.08) 0%, transparent 60%);
  filter: blur(60px);
  pointer-events: none;
  animation: glow-breathe 6s ease-in-out infinite alternate;
}

@keyframes glow-breathe {
  from { opacity: 0.6; transform: scale(1); }
  to   { opacity: 1;   transform: scale(1.08); }
}

/* Animated dot grid — Linear-style (brief 8.3) */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: radial-gradient(ellipse 55% 55% at 50% 45%, rgba(0,0,0,0.45) 0%, transparent 70%);
  mask-image: radial-gradient(ellipse 55% 55% at 50% 45%, rgba(0,0,0,0.45) 0%, transparent 70%);
  pointer-events: none;
  animation: grid-pulse 4s ease-in-out infinite alternate;
}

@keyframes grid-pulse {
  from { opacity: 0.4; }
  to   { opacity: 1; }
}

.hero-inner {
  position: relative;
  z-index: 2;
}

/* Staggered entrance */
.hero-inner > * {
  animation: hero-rise 0.85s var(--ease) both;
}
.hero-inner > *:nth-child(1) { animation-delay: 0.1s; }
.hero-inner > *:nth-child(2) { animation-delay: 0.2s; }
.hero-inner > *:nth-child(3) { animation-delay: 0.35s; }
.hero-inner > *:nth-child(4) { animation-delay: 0.5s; }

@keyframes hero-rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  color: var(--gold);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow-line {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--gold);
}

/* Gradient text on hero h1 only (brief 8.5 — use on ONE headline max) */
.hero h1 {
  color: var(--text); /* fallback */
  max-width: 720px;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--text) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  margin-top: 24px;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.7;
  color: var(--text-2);
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 48px;
}

/* -------------------------------------------------------------
   Buttons — brief section 5
   Gold primary, ghost secondary
   ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 28px;
  border: none;
  border-radius: var(--r);
  text-decoration: none;
  font-family: 'Outfit', system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.98); transition-duration: 0.1s; }

.btn-gold {
  background: var(--gold);
  color: var(--bg-deep);
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.btn-gold:hover {
  background: var(--gold-light);
  box-shadow: var(--shadow-gold);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-2);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.04);
}

.btn-lg {
  min-height: 56px;
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* -------------------------------------------------------------
   Stats Row — brief section 6
   Large numbers in accent color
   ------------------------------------------------------------- */
.stats {
  background: var(--bg);
  padding: 72px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.stat {
  text-align: center;
  padding: 0 24px;
  border-right: 1px solid var(--border);
}

.stat:last-child { border-right: none; }

.stat-num {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 12px;
}

.stat-desc {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.01em;
}

/* -------------------------------------------------------------
   Cards — brief section 6
   bg: elevated surface, opacity border, 12px radius, 32px pad
   ------------------------------------------------------------- */
.card-grid {
  display: grid;
  gap: 16px;
}

.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 32px;
  transition: border-color 0.25s ease, transform 0.25s var(--ease);
}

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

/* Accent variant — gold left border for feature cards */
.card--accent {
  border-left: 3px solid var(--gold);
  padding-left: 28px;
}

.card--accent:hover {
  border-left-color: var(--gold-light);
}

.card h3 {
  color: var(--text);
  margin-bottom: 10px;
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
}

/* -------------------------------------------------------------
   Problem section
   ------------------------------------------------------------- */
.problem h2 { max-width: 540px; }

/* -------------------------------------------------------------
   Outcome — two-column sticky layout
   ------------------------------------------------------------- */
.outcome-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.outcome-left {
  position: sticky;
  top: 120px;
}

.outcome-right {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.outcome-item {
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.outcome-item:first-child {
  padding-top: 0;
  border-top: none;
}

.outcome-item h3 {
  color: var(--text);
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.outcome-item p { margin: 0; }

/* -------------------------------------------------------------
   Pricing — featured card with glow
   ------------------------------------------------------------- */
.pricing {
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

.pricing-glow {
  position: absolute;
  width: 50%;
  height: 100%;
  top: 0;
  right: 0;
  background: radial-gradient(ellipse 80% 70% at 80% 50%, var(--gold-glow) 0%, transparent 55%);
  pointer-events: none;
}

.pricing-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 72px;
  align-items: center;
}

.pricing-text { max-width: 440px; }

.pricing-sub {
  margin-top: 20px;
  font-size: 1.05rem;
  color: var(--text-2);
}

/* Pricing card — glassmorphism (brief 8.4 — one element only) */
.price-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  padding: 40px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
}

.price-label {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.price-amount {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.price-amount span {
  font-size: 0.5em;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0;
}

.price-recurring {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-2);
  margin-top: 6px;
}

.price-divider {
  height: 1px;
  background: var(--border);
  margin: 28px 0;
}

.price-card ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.price-card li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9375rem;
  color: var(--text-2);
}

.price-card li::before {
  content: "";
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--gold);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18' fill='none'%3E%3Cpath d='M4 9.5l3.5 3L13 6' stroke='%230C0A09' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: contain;
}

/* -------------------------------------------------------------
   Process — numbered steps
   ------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.step {
  padding: 0 36px;
  border-left: 1px solid var(--border);
}

.step:first-child {
  border-left: none;
  padding-left: 0;
}

.step:last-child { padding-right: 0; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gold-dim);
  border: 1px solid rgba(212, 165, 116, 0.25);
  color: var(--gold);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

.step h3 {
  color: var(--text);
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.step p { margin: 0; font-size: 0.9375rem; }

/* -------------------------------------------------------------
   Fit — contrast cards
   ------------------------------------------------------------- */
.fit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.fit-yes,
.fit-no {
  padding: 36px;
}

.fit-yes {
  background: linear-gradient(145deg, var(--bg-elevated) 0%, rgba(212, 165, 116, 0.05) 100%);
  border-color: rgba(212, 165, 116, 0.12);
}

.fit-grid h3 {
  margin-bottom: 24px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fit-yes h3 { color: var(--gold); }
.fit-no h3  { color: var(--text-3); }

.fit-grid ul {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fit-grid li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.9375rem;
}

.fit-grid li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 10px;
}

.fit-yes li { color: var(--text-2); }
.fit-yes li::before { background: var(--gold); }

.fit-no li { color: var(--text-3); }
.fit-no li::before { background: var(--text-3); opacity: 0.4; }

/* -------------------------------------------------------------
   Guarantee — gold band (brief: accent band)
   ------------------------------------------------------------- */
.guarantee {
  background: var(--gold);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}

/* Subtle grid on gold surface */
.guarantee::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(12, 10, 9, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12, 10, 9, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.guarantee .label {
  color: rgba(12, 10, 9, 0.5);
  position: relative;
  z-index: 2;
}

.guarantee h2 {
  color: var(--bg-deep);
  max-width: 640px;
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  position: relative;
  z-index: 2;
}

/* -------------------------------------------------------------
   FAQ — stacked list (brief: no hover implies interactivity)
   ------------------------------------------------------------- */
.faq h2 { max-width: 420px; }

.faq-list {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.faq-list article {
  padding: 32px 36px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.015);
}

.faq-list article:last-child { border-bottom: none; }

.faq-list h3 {
  color: var(--text);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.faq-list p {
  margin: 0;
  font-size: 0.9375rem;
  max-width: 680px;
}

/* -------------------------------------------------------------
   Final CTA — deep bg, single button (brief section 4 #10)
   ------------------------------------------------------------- */
.final-cta {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
}

.cta-glow {
  position: absolute;
  width: 50%;
  height: 100%;
  top: 0;
  left: 15%;
  background: radial-gradient(ellipse 80% 80% at 40% 50%, var(--gold-glow) 0%, transparent 50%);
  pointer-events: none;
}

.final-cta .container { position: relative; z-index: 2; }

.final-cta h2 {
  max-width: 560px;
  margin-bottom: 20px;
}

.cta-sub {
  max-width: 500px;
  margin-bottom: 48px;
  font-size: 1.05rem;
  color: var(--text-2);
}

/* -------------------------------------------------------------
   Footer — minimal, dark (brief section 4 #10)
   ------------------------------------------------------------- */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer p {
  font-size: 0.8125rem;
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  font-size: 0.84rem;
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover { color: var(--text); }

/* -------------------------------------------------------------
   Scroll reveal
   ------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger grid children */
.card-grid .reveal:nth-child(2),
.steps .reveal:nth-child(2)   { transition-delay: 0.08s; }
.card-grid .reveal:nth-child(3),
.steps .reveal:nth-child(3)   { transition-delay: 0.16s; }
.card-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

.outcome-right .reveal:nth-child(2) { transition-delay: 0.1s; }
.outcome-right .reveal:nth-child(3) { transition-delay: 0.2s; }

.stats-row .reveal:nth-child(2) { transition-delay: 0.1s; }
.stats-row .reveal:nth-child(3) { transition-delay: 0.2s; }

/* -------------------------------------------------------------
   Legal pages
   ------------------------------------------------------------- */
.legal-shell {
  background: var(--bg);
  min-height: 100vh;
}

.legal-panel {
  width: min(var(--max-w), calc(100% - var(--gutter) * 2));
  margin: 0 auto;
  padding: 100px 0 120px;
}

.legal-panel .label { color: var(--gold); }
.legal-panel h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 40px;
}

.legal-panel p,
.legal-panel li {
  max-width: 680px;
  margin-bottom: 16px;
  color: var(--text-2);
}

.legal-panel a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Legal nav — always opaque */
.legal-shell .topbar {
  background: rgba(28, 25, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

/* -------------------------------------------------------------
   Responsive — tablet (max-width: 900px)
   ------------------------------------------------------------- */
@media (max-width: 900px) {
  .section { padding: 104px 0; }

  .card-grid--3 { grid-template-columns: 1fr; }

  .outcome-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .outcome-left { position: static; }

  .pricing-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .pricing-text { max-width: none; }

  .stats-row { gap: 24px; }
}

/* -------------------------------------------------------------
   Responsive — mobile (max-width: 680px)
   ------------------------------------------------------------- */
@media (max-width: 680px) {
  :root { --gutter: 16px; }

  .topbar-inner { height: 60px; }
  .menu-toggle { display: flex; }

  .topbar-links {
    display: none;
    position: fixed;
    inset: 0;
    top: 60px;
    background: rgba(12, 10, 9, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px var(--gutter);
    gap: 0;
    z-index: 99;
  }

  .topbar.menu-open .topbar-links { display: flex; }

  .topbar.menu-open .menu-toggle span:first-child {
    transform: rotate(45deg) translate(3px, 3px);
  }
  .topbar.menu-open .menu-toggle span:last-child {
    transform: rotate(-45deg) translate(3px, -3px);
  }

  .topbar-links a {
    font-size: 1.15rem;
    padding: 16px 0;
    width: 100%;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    color: var(--text);
  }

  .topbar-links .topbar-cta {
    margin-left: 0;
    margin-top: 24px;
    width: 100%;
    text-align: center;
    padding: 16px 22px;
    border-bottom: none;
  }

  .hero { padding: 128px 0 88px; }

  h1 { font-size: clamp(2.2rem, 9vw, 2.8rem); }
  h2 { font-size: clamp(1.55rem, 6vw, 1.9rem); }

  .hero-actions { flex-direction: column; gap: 10px; }
  .btn-gold,
  .btn-ghost { width: 100%; }
  .btn-gold { min-height: 54px; }

  .section { padding: 80px 0; }
  .section-head { margin-bottom: 44px; }

  .card-grid--2 { grid-template-columns: 1fr; }

  .stats { padding: 48px 0; }
  .stats-row { grid-template-columns: 1fr; gap: 0; }
  .stat {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
  }
  .stat:last-child { border-bottom: none; }

  .steps {
    grid-template-columns: 1fr;
  }
  .step {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 28px 0;
  }
  .step:first-child {
    border-top: none;
    padding-top: 0;
  }
  .step:last-child { padding-right: 0; }

  .fit-grid { grid-template-columns: 1fr; }

  .guarantee { padding: 64px 0; }

  .faq-list article { padding: 24px 20px; }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* -------------------------------------------------------------
   Reduced motion — respect user preference
   ------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .hero-inner > * { animation: none; opacity: 1; }
  .hero-glow { animation: none; }
  .hero-grid { animation: none; }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .card:hover {
    transform: none;
  }
}