/* ===========================================
   GLOW WELLNESS — DESIGN SYSTEM
   =========================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600&family=Inter:wght@300;400;500;600&display=swap');

/* ── Variables ── */
:root {
  --warm-cream:    #F7F4EF;
  --soft-sand:     #E8DED2;
  --muted-taupe:   #C8BFB5;
  --soft-black:    #1C1C1C;
  --deep-olive:    #5A6650;
  --silver-lilac:  #B0B2CF;

  --bg-deep:     #09090A;
  --bg-base:     #0F0F0E;
  --bg-raised:   #141413;
  --bg-card:     #1A1A18;
  --bg-elevated: #222220;
  --bg-light:    #F7F4EF;
  --bg-sand:     #E8DED2;

  --text-1: #F7F4EF;
  --text-2: #D6D0C8;
  --text-3: #C8BFB5;
  --text-4: rgba(247,244,239,.40);
  --text-dark: #1C1C1C;
  --text-dark-2: rgba(28,28,28,.60);

  --accent:        #5A6650;
  --accent-hover:  #697860;
  --accent-sub:    rgba(90,102,80,.15);
  --lilac:         #B0B2CF;
  --lilac-sub:     rgba(176,178,207,.12);

  --border:        rgba(200,191,181,.12);
  --border-mid:    rgba(200,191,181,.22);
  --border-strong: rgba(200,191,181,.40);

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --max-w:   1380px;
  --gutter:  clamp(1.25rem, 4vw, 2.5rem);
  --nav-h:   80px;

  --ease:     cubic-bezier(.25,.46,.45,.94);
  --ease-out: cubic-bezier(0,0,.25,1);
  --dur:      300ms;
  --dur-slow: 600ms;
}

/* ── Reset ── */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:16px; scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.65;
  color: var(--text-1);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color:inherit; text-decoration:none; }
img { display:block; max-width:100%; }
button { cursor:pointer; border:none; background:none; font:inherit; color:inherit; }
ul,ol { list-style:none; }
input,textarea,select { font:inherit; }

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ── Typography ── */
.display-1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.display-2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.display-3 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.015em;
}
h1,h2,h3,h4,h5,h6 { font-family:var(--font-display); font-weight:500; }

.eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-3);
}
.eyebrow--olive { color: var(--accent); }
.eyebrow--lilac { color: var(--lilac); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .875rem 2rem;
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  transition: all var(--dur) var(--ease);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--warm-cream);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--text-1);
  border: 1px solid var(--border-mid);
}
.btn-outline:hover {
  border-color: var(--text-1);
  background: rgba(247,244,239,.05);
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  padding: .875rem 0;
  border-bottom: 1px solid var(--border-mid);
  border-radius: 0;
}
.btn-ghost:hover {
  color: var(--text-1);
  border-color: var(--text-1);
}

.btn-dark {
  background: var(--soft-black);
  color: var(--warm-cream);
}
.btn-dark:hover {
  background: #2a2a28;
}

.btn-light {
  background: var(--warm-cream);
  color: var(--soft-black);
}
.btn-light:hover {
  background: var(--soft-sand);
}

.btn svg { width:1em; height:1em; stroke-width:1.5; }

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav.scrolled {
  background: rgba(9,9,10,.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--text-1);
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}
.nav-links a {
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-3);
  transition: color var(--dur) var(--ease);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width var(--dur) var(--ease);
}
.nav-links a:hover { color: var(--text-1); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--text-1); }
.nav-links a.active::after { width: 100%; }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 1.5rem);
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: .75rem 0;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-menu:hover {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: .625rem 1.25rem;
  font-size: .8rem;
  letter-spacing: .06em;
}
.nav-dropdown-menu a::after { display:none; }
.nav-dropdown-menu a:hover { background: var(--border); color:var(--text-1); }

.nav-cta { margin-left: 1rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .5rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text-1);
  transition: transform var(--dur) var(--ease), opacity var(--dur);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* Mobile nav */
.nav-mobile {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: var(--bg-deep);
  z-index: 99;
  padding: 2rem var(--gutter) 3rem;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  display: block;
  padding: 1rem 0;
  font-size: 1.25rem;
  font-family: var(--font-display);
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
}
.nav-mobile a:hover { color: var(--text-1); }
.nav-mobile .btn { margin-top: 2rem; }

/* ── Footer ── */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 5rem 0 2.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}
.footer-brand .nav-logo { margin-bottom: 1rem; }
.footer-brand p {
  font-size: .875rem;
  color: var(--text-3);
  line-height: 1.7;
  max-width: 260px;
}
.footer-col h4 {
  font-family: var(--font-body);
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1.25rem;
}
.footer-col ul { display:flex; flex-direction:column; gap:.625rem; }
.footer-col ul a {
  font-size: .875rem;
  color: var(--text-3);
  transition: color var(--dur);
}
.footer-col ul a:hover { color: var(--text-1); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: .8125rem;
  color: var(--text-4);
}
.footer-bottom a { color: var(--text-3); transition: color var(--dur); }
.footer-bottom a:hover { color: var(--text-1); }

/* ── Page Header / Hero ── */
.page-hero {
  min-height: 60vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--nav-h) + 4rem) 0 4rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, var(--bg-base) 100%);
  z-index: 1;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background: var(--bg-raised);
}
.page-hero-content {
  position: relative;
  z-index: 2;
}
.page-hero-content .eyebrow { margin-bottom: 1.25rem; }
.page-hero-content h1 { margin-bottom: 1.5rem; }
.page-hero-content p {
  font-size: 1.125rem;
  color: var(--text-2);
  max-width: 520px;
}

/* ── Section shared ── */
.section {
  padding: clamp(4rem, 8vw, 8rem) 0;
}
.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section-header .eyebrow { margin-bottom: 1rem; }
.section-header h2 { margin-bottom: 1rem; }
.section-header p {
  color: var(--text-2);
  max-width: 540px;
  font-size: 1.0625rem;
}

.section-dark  { background: var(--bg-base); }
.section-raised { background: var(--bg-raised); }
.section-card  { background: var(--bg-card); }
.section-deep  { background: var(--bg-deep); }
.section-light {
  background: var(--bg-light);
  color: var(--text-dark);
}
.section-light .eyebrow { color: var(--accent); }
.section-light .text-muted { color: var(--text-dark-2); }
.section-sand {
  background: var(--bg-sand);
  color: var(--text-dark);
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--border-mid);
  transform: translateY(-3px);
}
.card-img {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
}
.card-img-inner {
  width: 100%;
  height: 100%;
  background: var(--bg-elevated);
  transition: transform .5s var(--ease);
}
.card:hover .card-img-inner { transform: scale(1.03); }
.card-body { padding: 1.75rem; }
.card-body .eyebrow { margin-bottom: .75rem; }
.card-body h3 {
  font-size: 1.375rem;
  margin-bottom: .75rem;
}
.card-body p {
  font-size: .9375rem;
  color: var(--text-2);
  line-height: 1.65;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1.25rem;
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  transition: gap var(--dur);
}
.card-link:hover { gap: .75rem; }

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ── Tag / Badge ── */
.tag {
  display: inline-block;
  padding: .3rem .75rem;
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  border: 1px solid var(--border-mid);
  color: var(--text-3);
}
.tag--olive {
  background: var(--accent-sub);
  border-color: transparent;
  color: var(--accent);
}
.tag--lilac {
  background: var(--lilac-sub);
  border-color: transparent;
  color: var(--lilac);
}

/* ── Image placeholder helpers ── */
.img-fill {
  width: 100%; height: 100%;
  object-fit: cover;
}
.img-ph {
  background: var(--bg-elevated);
  position: relative;
  overflow: hidden;
}
.img-ph::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(90,102,80,.08) 0%, transparent 60%);
}

/* gradient image fills by treatment type */
.img-ph--home   { background: linear-gradient(145deg, #1a1c18 0%, #131512 50%, #0e0e0d 100%); }
.img-ph--iv     { background: linear-gradient(145deg, #141914 0%, #111611 50%, #0d110d 100%); }
.img-ph--red    { background: linear-gradient(145deg, #1c120e 0%, #180f0c 50%, #110a08 100%); }
.img-ph--skin   { background: linear-gradient(145deg, #1a1715 0%, #161412 50%, #110f0e 100%); }
.img-ph--peptide{ background: linear-gradient(145deg, #111318 0%, #0e1015 50%, #090b10 100%); }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity:0; transform: translateY(24px); }
  to   { opacity:1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity:0; }
  to   { opacity:1; }
}
@keyframes lineGrow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* ── Utility ── */
.text-muted  { color: var(--text-3); }
.text-accent { color: var(--accent); }
.text-lilac  { color: var(--lilac); }
.italic      { font-style: italic; }

.flex        { display:flex; }
.flex-col    { flex-direction:column; }
.items-center{ align-items:center; }
.items-end   { align-items:flex-end; }
.justify-between { justify-content:space-between; }
.gap-sm      { gap:.75rem; }
.gap-md      { gap:1.5rem; }
.gap-lg      { gap:2.5rem; }
.gap-xl      { gap:4rem; }

.grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:clamp(1.5rem,3vw,3rem); }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(1.25rem,2.5vw,2.5rem); }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(1rem,2vw,2rem); }

.mt-sm { margin-top:.75rem; }
.mt-md { margin-top:1.5rem; }
.mt-lg { margin-top:2.5rem; }
.mt-xl { margin-top:4rem; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--bg-elevated); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted-taupe); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  :root { --nav-h: 68px; }

  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }

  .page-hero {
    min-height: 50vh;
    padding-top: calc(var(--nav-h) + 3rem);
    padding-bottom: 3rem;
  }
}

@media (max-width: 480px) {
  .btn { padding: .75rem 1.5rem; font-size: .8125rem; }
}