:root {
  --bg: #0B1B2E;
  --cream: #ECE5D4;
  --brass: #C6A664;
  --steel: #8E9BAC;
  --hair: #283E5A;
  --bg-raise: #10263F;

  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--cream);
  overflow-x: hidden;
}

/* Accessible brass focus outlines */
:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 4px;
}

/* Top 2px brass scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brass);
  transform-origin: left center;
  transform: scaleX(0);
  z-index: 200;
  pointer-events: none;
  will-change: transform;
}

/* Layout container */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography primitives */
.mono-label {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--brass);
  font-weight: 400;
}

.brass-italic {
  font-style: italic;
  color: var(--brass);
  font-weight: 400;
}

/* 1. Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  border-bottom: 1px solid transparent;
  transition: opacity 300ms ease-out;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--bg);
  opacity: 1;
  z-index: -1;
  transition: opacity 300ms ease-out;
}

.site-header.is-scrolled {
  background-color: transparent;
  border-bottom-color: var(--hair);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.site-header.is-scrolled::before {
  opacity: 0.88;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--cream);
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: block;
  flex-shrink: 0;
}

@media (min-width: 400px) {
  .brand-logo {
    width: 40px;
    height: 40px;
  }
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cream);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

@media (min-width: 400px) {
  .site-nav {
    gap: 20px;
  }
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--cream);
}

/* 2. Hero */
.hero {
  padding: 64px 0 88px;
  border-bottom: 1px solid var(--hair);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}

.hero-copy {
  max-width: 580px;
}

.hero-heading {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.35rem, 6vw, 4.1rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--cream);
  margin: 18px 0 24px;
}

.hero-line {
  display: block;
}

.hero-subline {
  font-size: 1.0625rem;
  line-height: 1.72;
  color: var(--steel);
  margin-bottom: 36px;
  max-width: 52ch;
}

/* Buttons */
.button-group {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn > span {
  position: relative;
  z-index: 1;
}

.btn-primary {
  background-color: var(--brass);
  color: var(--bg);
  border: 1px solid var(--brass);
}

/* Slow brass-to-lighter-brass fill transition using only palette colors and opacity */
.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--cream);
  opacity: 0;
  transition: opacity 450ms ease-out;
  z-index: 0;
}

.btn-primary:hover::before,
.btn-primary:focus-visible::before {
  opacity: 0.24;
}

.btn-arrow {
  display: inline-block;
  transition: transform 350ms ease-out;
}

.btn-primary:hover .btn-arrow,
.btn-primary:focus-visible .btn-arrow {
  transform: translateX(4px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--cream);
  border: 1px solid var(--cream);
}

.btn-secondary::after {
  content: "";
  position: absolute;
  inset: -1px;
  border: 1px solid var(--brass);
  border-radius: 4px;
  opacity: 0;
  transition: opacity 350ms ease-out;
  pointer-events: none;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--brass);
  color: var(--brass);
}

.btn-secondary:hover::after,
.btn-secondary:focus-visible::after {
  opacity: 1;
}

/* Hero Visual (HTML + CSS only) */
.hero-visual-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 16px 0 8px;
}

/* Single allowed gradient: very soft radial glow of brass at 6% opacity behind hero visual */
.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 380px;
  height: 380px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(198, 166, 100, 0.06) 0%, rgba(198, 166, 100, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-float {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 340px;
  animation: heroFloat 6s ease-in-out infinite;
  will-change: transform;
}

@keyframes heroFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.card-stack {
  position: relative;
  margin-right: 20px;
  margin-bottom: 20px;
}

.booking-card {
  background-color: var(--bg-raise);
  border: 1px solid var(--hair);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 20px 44px rgba(11, 27, 46, 0.65);
}

.booking-card-back {
  position: absolute;
  inset: 0;
  transform: translate(20px, 20px);
  opacity: 0.42;
  pointer-events: none;
  z-index: 0;
}

.booking-card-front {
  position: relative;
  z-index: 1;
}

.card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--brass);
  flex-shrink: 0;
}

.card-mono {
  font-size: 11px;
}

.card-treatment {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: 18px;
  line-height: 1.25;
}

.card-details {
  border-top: 1px solid var(--hair);
  margin-bottom: 18px;
}

.card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--hair);
  font-size: 0.875rem;
}

.card-row dt {
  color: var(--steel);
  font-weight: 400;
}

.card-row dd {
  color: var(--cream);
  font-weight: 500;
}

.card-footer {
  display: flex;
  justify-content: flex-start;
}

.status-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  border: 1px solid var(--brass);
  border-radius: 999px;
  padding: 3px 12px;
  line-height: 1.4;
}

.visual-caption {
  font-size: 0.75rem;
  color: var(--steel);
  margin-top: 14px;
  letter-spacing: 0.03em;
}

/* Sections common */
.section {
  padding: 84px 0;
  border-bottom: 1px solid var(--hair);
}

.section-header {
  margin-bottom: 48px;
}

.section-heading {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--cream);
  margin: 14px 0 22px;
}

/* 1px brass line under each section heading that draws across 0 to 100% */
.section-rule {
  width: 100%;
  height: 1px;
  background-color: var(--brass);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.section-rule.is-drawn {
  transform: scaleX(1);
}

/* 3. The problem */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.problem-item {
  padding-top: 8px;
}

.problem-numeral {
  display: block;
  font-family: var(--font-serif);
  font-size: 3rem;
  line-height: 1;
  color: var(--steel);
  margin-bottom: 16px;
  font-weight: 400;
}

.problem-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 10px;
}

.problem-body {
  color: var(--steel);
  font-size: 0.975rem;
  line-height: 1.65;
}

/* 4. How it works */
.steps-list {
  list-style: none;
  border-top: 1px solid var(--hair);
}

.step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--hair);
  transition: transform 300ms ease-out, opacity 650ms ease-out;
  will-change: transform, opacity;
}

.step-item.is-visible:hover {
  transform: translateY(-4px);
}

.step-num {
  padding-top: 2px;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: 6px;
}

.step-body {
  color: var(--steel);
  font-size: 0.975rem;
}

/* 5. Demo */
.demo-panel {
  background-color: var(--bg-raise);
  border: 1px solid var(--hair);
  border-radius: 14px;
  padding: 32px 24px;
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--cream);
  max-width: 58ch;
  margin-bottom: 12px;
}

.demo-disclaimer {
  font-size: 0.875rem;
  color: var(--steel);
  margin-bottom: 28px;
}

/* 6. Contact */
.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.contact-list {
  border-top: 1px solid var(--hair);
}

.contact-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hair);
}

.contact-link {
  color: var(--cream);
  text-decoration: none;
  font-size: 1.0625rem;
  transition: opacity 250ms ease-out;
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--brass);
}

/* 7. Footer */
.site-footer {
  padding: 56px 0 64px;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cream);
  margin-bottom: 4px;
}

.footer-meta {
  font-size: 0.875rem;
  color: var(--steel);
}

/* Motion reveal states (enabled when JS adds .js-motion to html) */
.js-motion .hero-line,
.js-motion .hero-reveal-line {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms ease-out, transform 700ms ease-out;
  will-change: opacity, transform;
}

.js-motion .hero-line.is-visible,
.js-motion .hero-reveal-line.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js-motion [data-reveal-item] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 650ms ease-out, transform 650ms ease-out;
  will-change: opacity, transform;
}

.js-motion [data-reveal-item].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js-motion .step-item.is-visible:hover {
  transform: translateY(-4px);
  transition: transform 280ms ease-out;
}

/* Desktop & Tablet Breakpoints */
@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }

  .site-nav {
    gap: 36px;
  }

  .nav-link {
    font-size: 14px;
  }

  .hero {
    padding: 104px 0 120px;
  }

  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
  }

  .button-group {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
  }

  .hero-visual-wrap {
    justify-content: flex-end;
  }

  .section {
    padding: 112px 0;
  }

  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }

  .problem-item {
    border-left: 1px solid var(--hair);
    padding-left: 28px;
  }

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

  .step-item {
    grid-template-columns: 80px 1fr;
    padding: 32px 0;
  }

  .demo-panel {
    padding: 48px;
  }

  .contact-content {
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
  }

  .contact-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* Respect prefers-reduced-motion: disable all motion and show everything statically */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero-float {
    animation: none !important;
    transform: none !important;
  }

  .js-motion .hero-line,
  .js-motion .hero-reveal-line,
  .js-motion [data-reveal-item] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .section-rule {
    transform: scaleX(1) !important;
    transition: none !important;
  }

  .step-item:hover,
  .js-motion .step-item.is-visible:hover,
  .btn-primary:hover .btn-arrow,
  .btn-primary:focus-visible .btn-arrow {
    transform: none !important;
  }

  .scroll-progress {
    display: none !important;
  }
}