/* ==========================================================================
   Revival IV: Design tokens
   Charcoal   #1A1A1A   base dark
   Panel      #232323   raised dark surface
   Paper      #F6F4EE   base light (warm off-white, not stark white)
   Ink        #17181A   text on paper
   Signal     #38B6FF   accent (from logo), used sparingly
   Stone      #83807A   muted secondary / borders on paper
   ========================================================================== */

:root {
  --charcoal: #1A1A1A;
  --panel: #232323;
  --panel-line: #3A3A3A;
  --paper: #F6F4EE;
  --paper-line: #DEDACF;
  --ink: #17181A;
  --signal: #38B6FF;
  --signal-dim: #146089;
  --signal-tint: #E9F6FF;
  --stone: #6E6A61;
  --stone-on-dark: #9C9A94;

  --font-display: 'Archivo Black', 'Arial Black', sans-serif;
  --font-label: 'Space Grotesk', 'Arial', sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Consolas', monospace;

  --container: 1240px;
  --gutter: 24px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--signal); color: var(--charcoal); padding: 12px 20px; font-family: var(--font-label); font-weight: 600;
}
.skip-link:focus { left: 16px; top: 16px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---- Layout helpers ---- */
.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section { padding: 88px 0; }
.section-paper { background: var(--paper); color: var(--ink); }
.section-charcoal { background: var(--charcoal); color: #EDEBE6; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal-dim);
  margin-bottom: 18px;
  display: inline-block;
}
.eyebrow-on-dark { color: var(--signal); }

.section-title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.section-title.on-dark { color: #FAFAF7; }

.section-lede {
  max-width: 46ch;
  font-size: 17px;
  color: var(--stone);
}
.section-head { margin-bottom: 56px; }

.accent-word { color: var(--signal); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-label);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  padding: 16px 28px;
  border-radius: 2px;
  border: 1.5px solid transparent;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
  min-height: 44px;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--signal);
  color: var(--charcoal);
}
.btn-primary:hover { background: #58C4FF; }
.btn-outline {
  border-color: currentColor;
  color: inherit;
}
.section-paper .btn-outline { border-color: var(--ink); color: var(--ink); }
.section-paper .btn-outline:hover { background: var(--ink); color: var(--paper); }
.hero .btn-outline, .cta-section .btn-outline { border-color: #55534D; color: #EDEBE6; }
.hero .btn-outline:hover, .cta-section .btn-outline:hover { background: #EDEBE6; color: var(--charcoal); border-color: #EDEBE6; }
.btn-sm { padding: 12px 22px; font-size: 14px; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 26, 26, 0.97);
  border-bottom: 1px solid var(--panel-line);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand-mark { height: 26px; width: auto; }
.main-nav ul { display: flex; gap: 32px; }
.main-nav a {
  font-family: var(--font-label);
  font-size: 14px;
  font-weight: 500;
  color: #C9C7C1;
  transition: color 0.2s var(--ease);
}
.main-nav a:hover { color: var(--signal); }

.header-actions { display: flex; align-items: center; gap: 20px; }
.header-phone {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #C9C7C1;
  display: none;
}
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
}
.nav-toggle-bar {
  width: 22px; height: 2px; background: #EDEBE6; transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 65px 0 0 0;
  background: var(--charcoal);
  z-index: 99;
  padding: 32px var(--gutter);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  overflow-y: auto;
}
.mobile-menu.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mobile-menu ul { display: flex; flex-direction: column; gap: 4px; margin-bottom: 32px; }
.mobile-menu a {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 28px;
  padding: 14px 0;
  border-bottom: 1px solid var(--panel-line);
  color: #FAFAF7;
}
.mobile-menu-footer { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.mobile-menu-footer a:first-child { font-family: var(--font-mono); color: var(--signal); font-size: 16px; }

@media (min-width: 860px) {
  .main-nav { display: block; }
  .nav-toggle, .mobile-menu { display: none; }
  .header-phone { display: inline-block; }
}
@media (max-width: 859px) {
  .main-nav { display: none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: var(--charcoal);
  color: #EDEBE6;
  overflow: hidden;
}
.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px var(--gutter) 48px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.hero-copy { min-width: 0; }
.hero-headline {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(44px, 12vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
}
.hero-headline span { display: block; }
.hero-sub {
  max-width: 46ch;
  font-size: 18px;
  color: #C9C7C1;
  margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; margin-top: 8px; }
.drip-svg { width: auto; height: clamp(220px, 46vw, 460px); max-width: 100%; overflow: visible; }

.drip-line { fill: none; stroke: #52504A; stroke-width: 2; stroke-linejoin: round; }
.drip-bag { fill: rgba(56, 182, 255, 0.05); }
.drip-fluid { fill: rgba(56, 182, 255, 0.14); stroke: none; }
.drip-label-line { stroke: #454340; stroke-width: 1.5; }
.drip-tube { stroke-width: 2.5; }
.drip-clamp { fill: var(--panel); stroke-width: 2; }
.drip-port { fill: var(--charcoal); stroke-width: 2; }

.drip-port-pulse {
  fill: none;
  stroke: var(--signal);
  stroke-width: 1.5;
}

.drip-drop {
  fill: var(--signal);
}

.ticker {
  border-top: 1px solid var(--panel-line);
  overflow: hidden;
  padding: 16px 0;
}
.ticker-track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: ticker-scroll 22s linear infinite;
}
.ticker-set {
  display: flex;
  gap: 48px;
  flex-shrink: 0;
}
.ticker-track span {
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stone-on-dark);
  white-space: nowrap;
}
@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-100% / 8)); }
}

@media (min-width: 700px) {
  .hero-inner { grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr); padding-top: 88px; padding-bottom: 72px; }
  .hero-visual { margin-top: 0; }
  .hero-headline { font-size: clamp(44px, 8.5vw, 92px); }
}

/* ==========================================================================
   Treatments
   ========================================================================== */
.treatment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
}
.treatment-card {
  background: var(--paper);
  padding: 36px 28px;
  transition: background-color 0.25s var(--ease);
}
.treatment-card:hover { background: #EFECE2; }
.treatment-icon {
  display: inline-flex;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--signal-dim);
}
.treatment-icon svg { width: 26px; height: 26px; stroke: currentColor; stroke-width: 1.4; fill: none; }
.treatment-card h3 {
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 19px;
  margin-bottom: 10px;
}
.treatment-card p { color: var(--stone); font-size: 15px; margin-bottom: 20px; }
.treatment-price {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  border-top: 1px solid var(--paper-line);
  padding-top: 16px;
  display: block;
}

@media (min-width: 640px) {
  .treatment-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .treatment-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ==========================================================================
   Standard (nurse-led) section
   ========================================================================== */
.standard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.standard-body p { color: #C9C7C1; font-size: 17px; max-width: 52ch; margin-bottom: 28px; }
.standard-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--panel-line);
  font-family: var(--font-label);
  font-size: 16px;
  color: #EDEBE6;
}
.standard-list li:last-child { border-bottom: 1px solid var(--panel-line); }
.standard-list li span {
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 13px;
}

@media (min-width: 860px) {
  .standard-grid { grid-template-columns: 1fr 1fr; gap: 64px; }
}

/* ==========================================================================
   Process
   ========================================================================== */
.process-list { max-width: 720px; border-top: 1px solid var(--paper-line); }
.process-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--paper-line);
  align-items: baseline;
}
.process-num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--signal-dim);
}
.process-copy h3 {
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 8px;
}
.process-copy p { color: var(--stone); max-width: 50ch; }

@media (min-width: 640px) {
  .process-step { grid-template-columns: 100px 1fr; }
}

/* ==========================================================================
   Coverage
   ========================================================================== */
.coverage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--panel-line);
  border: 1px solid var(--panel-line);
}
.coverage-card { background: var(--charcoal); padding: 32px 28px; }
.coverage-card h3 {
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 18px;
  color: #FAFAF7;
  margin-bottom: 10px;
}
.coverage-card p { color: #9C9A94; font-size: 15px; }
.coverage-note { color: var(--stone-on-dark); font-size: 14px; margin-top: 28px; }
.coverage-note a { color: var(--signal); text-decoration: underline; text-underline-offset: 3px; }
.coverage-note a:hover { color: #58C4FF; }

@media (min-width: 640px) {
  .coverage-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .coverage-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ==========================================================================
   Pricing
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.pricing-card {
  border: 1px solid var(--paper-line);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.pricing-card h3 { font-family: var(--font-label); font-weight: 700; font-size: 18px; }
.pricing-amount { font-family: var(--font-display); font-size: 30px; margin: 8px 0 4px; }
.pricing-amount span { font-family: var(--font-body); font-size: 14px; font-weight: 400; color: var(--stone); }
.pricing-desc { color: var(--stone); font-size: 15px; margin-bottom: 20px; }
.pricing-card .btn { margin-top: auto; }
.pricing-featured {
  background: var(--charcoal);
  border-color: var(--charcoal);
  color: #EDEBE6;
}
.pricing-featured .pricing-desc { color: #9C9A94; }
.pricing-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
}
.pricing-note { color: var(--stone); font-size: 13px; margin-top: 28px; }

@media (min-width: 780px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-featured { transform: translateY(-12px); }
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list { max-width: 780px; border-top: 1px solid var(--paper-line); }
.faq-item { border-bottom: 1px solid var(--paper-line); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 4px;
  text-align: left;
  font-family: var(--font-label);
  font-weight: 600;
  font-size: 17px;
  min-height: 44px;
}
.faq-icon { position: relative; width: 18px; height: 18px; flex: none; }
.faq-icon::before, .faq-icon::after {
  content: ""; position: absolute; background: var(--ink); transition: transform 0.25s var(--ease);
}
.faq-icon::before { top: 8px; left: 0; width: 18px; height: 2px; }
.faq-icon::after { top: 0; left: 8px; width: 2px; height: 18px; }
.faq-question[aria-expanded="true"] .faq-icon::after { transform: rotate(90deg); opacity: 0; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease);
}
.faq-answer p { padding: 0 4px 22px; color: var(--stone); max-width: 60ch; }

/* ==========================================================================
   Closing CTA
   ========================================================================== */
.cta-inner { text-align: left; padding-top: 96px; padding-bottom: 96px; }
.cta-headline {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(40px, 9vw, 76px);
  line-height: 0.98;
  color: #FAFAF7;
  margin-bottom: 28px;
}
.cta-sub { font-size: 18px; color: #C9C7C1; max-width: 46ch; margin-bottom: 36px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 28px; }
.cta-hours { font-family: var(--font-mono); font-size: 13px; color: var(--stone-on-dark); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--panel); color: #C9C7C1; }
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px var(--gutter) 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.footer-brand .brand-mark { height: 30px; margin-bottom: 16px; }
.footer-brand p { max-width: 32ch; color: #9C9A94; font-size: 14px; }
.footer-col h4 {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stone-on-dark);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: var(--signal); }
.footer-legal {
  border-top: 1px solid var(--panel-line);
  padding: 20px var(--gutter);
}
.footer-legal p {
  max-width: var(--container);
  margin: 0 auto;
  font-size: 12px;
  color: var(--stone-on-dark);
}

@media (min-width: 640px) {
  .footer-inner { grid-template-columns: 1.4fr repeat(3, 1fr); }
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ==========================================================================
   Responsive type scale bump
   ========================================================================== */
@media (min-width: 1024px) {
  .section { padding: 120px 0; }
  :root { --gutter: 40px; }
}