/* ==========================================================================
   Chevean — Global Stylesheet
   ========================================================================== */

:root {
  --near-black: #0F1923;
  --navy: #1A2B4A;
  --ivory: #F8F4ED;
  --gold: #B89968;
  --gold-dim: #8a7550;
  --ivory-dim: rgba(248, 244, 237, 0.65);
  --ivory-faint: rgba(248, 244, 237, 0.35);
  --border-faint: rgba(184, 153, 104, 0.25);

  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container-max: 1180px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;
}

/* ---------------------------------- Reset ---------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--near-black);
  color: var(--ivory);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0;
  color: var(--ivory);
}

p { margin: 0; }

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; margin: 0; padding: 0; }

img { max-width: 100%; display: block; }

button {
  font-family: var(--font-body);
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .container { padding: 0 3rem; }
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-2);
}

.section-heading {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: 0.01em;
}

.section-sub {
  color: var(--ivory-dim);
  font-size: 1.05rem;
  max-width: 640px;
  margin-top: var(--space-2);
}

/* ---------------------------------- Nav ---------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: rgba(15, 25, 35, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.nav.scrolled {
  border-bottom-color: var(--border-faint);
  background: rgba(15, 25, 35, 0.92);
}

@media (min-width: 768px) {
  .nav { padding: 1.5rem 3rem; }
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  color: var(--gold);
  font-weight: 700;
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-5);
}

@media (min-width: 860px) {
  .nav-links { display: flex; }
}

.nav-links a {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ivory-dim);
  position: relative;
  padding-bottom: 4px;
  transition: color 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
}

.nav-cta {
  display: none;
}

@media (min-width: 860px) {
  .nav-cta {
    display: inline-block;
    border: 1px solid var(--gold);
    color: var(--gold);
    padding: 0.6rem 1.4rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: background 0.25s ease, color 0.25s ease;
  }
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--near-black);
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  z-index: 1100;
}

@media (min-width: 860px) {
  .hamburger { display: none; }
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--ivory);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--near-black);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--ivory);
  letter-spacing: 0.02em;
}

.mobile-menu a.active { color: var(--gold); }

.mobile-menu .nav-cta {
  display: inline-block;
}

@media (min-width: 860px) {
  .mobile-menu { display: none; }
}

/* ---------------------------------- Hero ---------------------------------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 7rem 1.5rem 4rem;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(184, 153, 104, 0.10), transparent 60%),
    linear-gradient(180deg, var(--near-black) 0%, var(--navy) 140%);
}

.hero-mark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(3.2rem, 14vw, 7.5rem);
  letter-spacing: 0.05em;
  color: var(--gold);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.hero-tagline {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  color: var(--ivory);
  margin-bottom: var(--space-2);
}

.hero-subline {
  color: var(--ivory-dim);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  max-width: 480px;
  margin-bottom: var(--space-4);
}

.hero-scroll-cue {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ivory-faint);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero-scroll-cue::after {
  content: '';
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--gold), transparent);
  animation: scrollcue 2s ease-in-out infinite;
}

@keyframes scrollcue {
  0% { transform: scaleY(0.3); opacity: 0.3; }
  50% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0.3); opacity: 0.3; }
}

/* ---------------------------------- Buttons ---------------------------------- */
.btn {
  display: inline-block;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--gold);
  padding: 0.95rem 2.2rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 0.28s ease, color 0.28s ease, transform 0.15s ease;
}

.btn:hover {
  background: var(--gold);
  color: var(--near-black);
  transform: translateY(-1px);
}

.btn-solid {
  background: var(--gold);
  color: var(--near-black);
}

.btn-solid:hover {
  background: transparent;
  color: var(--gold);
}

/* ---------------------------------- Sections ---------------------------------- */
section {
  padding: var(--space-6) 0;
  position: relative;
}

.section-center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-alt {
  background: var(--navy);
}

.divider {
  width: 44px;
  height: 1px;
  background: var(--gold);
  margin: var(--space-3) auto;
}

/* --------------------------------- Problem --------------------------------- */
.problem {
  text-align: center;
  padding: var(--space-5) 0;
}

.problem-line {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-style: italic;
  max-width: 780px;
  margin: 0 auto;
  color: var(--ivory);
}

.problem-line span {
  color: var(--gold);
}

/* --------------------------------- Why grid --------------------------------- */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

@media (min-width: 768px) {
  .why-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}

.why-card {
  border: 1px solid var(--border-faint);
  padding: var(--space-4) var(--space-3);
  text-align: left;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.why-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.why-icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-2);
}

.why-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
  color: var(--gold);
}

.why-card p {
  color: var(--ivory-dim);
  font-size: 0.95rem;
}

/* -------------------------------- Products -------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

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

@media (min-width: 1024px) {
  .product-grid { grid-template-columns: repeat(4, 1fr); }
}

.product-card {
  border: 1px solid var(--border-faint);
  padding: var(--space-4) var(--space-3);
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, rgba(184,153,104,0.05), transparent 60%);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.product-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.product-num {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--gold-dim);
  letter-spacing: 0.1em;
}

.product-card h3 {
  font-size: 1.3rem;
  margin: var(--space-3) 0 0.5rem;
}

.product-card p {
  color: var(--ivory-dim);
  font-size: 0.9rem;
}

.product-status {
  margin-top: var(--space-3);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

/* -------------------------------- Waitlist -------------------------------- */
.waitlist {
  background: linear-gradient(180deg, var(--navy), var(--near-black));
  text-align: center;
  border-top: 1px solid var(--border-faint);
  border-bottom: 1px solid var(--border-faint);
}

.waitlist h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--gold);
  max-width: 700px;
  margin: 0 auto;
}

.waitlist .section-sub {
  margin: var(--space-2) auto var(--space-4);
  text-align: center;
}

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  max-width: 420px;
  margin: 0 auto;
}

@media (min-width: 540px) {
  .waitlist-form {
    flex-direction: row;
    max-width: 480px;
  }
}

.waitlist-form input[type="email"] {
  flex: 1;
  background: transparent;
  border: 1px solid var(--ivory-faint);
  color: var(--ivory);
  padding: 0.95rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.waitlist-form input[type="email"]:focus {
  outline: none;
  border-color: var(--gold);
}

.waitlist-form input::placeholder {
  color: var(--ivory-faint);
}

.waitlist-form button {
  border: 1px solid var(--gold);
  background: var(--gold);
  color: var(--near-black);
  padding: 0.95rem 1.6rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background 0.25s ease, color 0.25s ease;
}

.waitlist-form button:hover {
  background: transparent;
  color: var(--gold);
}

.form-note {
  margin-top: var(--space-2);
  font-size: 0.78rem;
  color: var(--ivory-faint);
}

.form-message {
  margin-top: var(--space-3);
  font-size: 0.9rem;
  color: var(--gold);
  min-height: 1.2rem;
}

/* --------------------------------- Quote --------------------------------- */
.quote-section {
  text-align: center;
}

.quote-mark {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  color: var(--gold-dim);
  line-height: 1;
}

blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(1.2rem, 3.2vw, 1.7rem);
  max-width: 700px;
  margin: var(--space-2) auto 0;
  color: var(--ivory);
}

.quote-attribution {
  margin-top: var(--space-3);
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* --------------------------------- Footer --------------------------------- */
footer {
  padding: var(--space-5) 0 var(--space-3);
  border-top: 1px solid var(--border-faint);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.footer-tagline {
  color: var(--ivory-dim);
  font-style: italic;
  font-family: var(--font-heading);
  margin-top: 0.6rem;
  font-size: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  font-size: 0.85rem;
  color: var(--ivory-dim);
}

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

.footer-location {
  margin-top: var(--space-3);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-dim);
}

.footer-bottom {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-faint);
  font-size: 0.75rem;
  color: var(--ivory-faint);
}

/* ------------------------------ Inner page hero ------------------------------ */
.page-hero {
  padding: 9rem 0 4rem;
  text-align: center;
  background: linear-gradient(180deg, var(--near-black), var(--navy) 160%);
}

.page-hero .eyebrow { display: block; }

.page-hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  max-width: 800px;
  margin: 0 auto;
}

.page-hero p {
  color: var(--ivory-dim);
  max-width: 600px;
  margin: var(--space-3) auto 0;
  font-size: 1.05rem;
}

/* -------------------------------- Story page -------------------------------- */
.story-block {
  max-width: 760px;
  margin: 0 auto;
}

.story-block p + p { margin-top: var(--space-3); }

.story-block p {
  color: var(--ivory-dim);
  font-size: 1.05rem;
  line-height: 1.85;
}

.axes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

@media (min-width: 768px) {
  .axes-grid { grid-template-columns: repeat(2, 1fr); }
}

.axis-card {
  border-left: 2px solid var(--gold);
  padding: var(--space-2) var(--space-3);
}

.axis-num {
  font-family: var(--font-heading);
  color: var(--gold-dim);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.axis-card h3 {
  font-size: 1.4rem;
  margin: 0.4rem 0 0.6rem;
}

.axis-card p {
  color: var(--ivory-dim);
  font-size: 0.95rem;
}

.founder-block {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.founder-sig {
  margin-top: var(--space-3);
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--gold);
}

.zones-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

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

@media (min-width: 1024px) {
  .zones-grid { grid-template-columns: repeat(4, 1fr); }
}

.zone-card {
  border: 1px solid var(--border-faint);
  padding: var(--space-4) var(--space-3);
  text-align: center;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.zone-card.active {
  border-color: var(--gold);
  background: linear-gradient(160deg, rgba(184,153,104,0.08), transparent 70%);
}

.zone-card:hover { transform: translateY(-4px); }

.zone-status {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-2);
}

.zone-card.upcoming .zone-status { color: var(--ivory-faint); }

.zone-card h3 {
  font-size: 1.2rem;
}

.zone-card p {
  color: var(--ivory-dim);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

/* -------------------------------- Science page -------------------------------- */
.skin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

@media (min-width: 768px) {
  .skin-grid { grid-template-columns: repeat(2, 1fr); }
}

.skin-card {
  border: 1px solid var(--border-faint);
  padding: var(--space-3);
}

.skin-card h3 {
  color: var(--gold);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.skin-card p {
  color: var(--ivory-dim);
  font-size: 0.92rem;
}

.actives-list {
  margin-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.active-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-faint);
}

@media (min-width: 768px) {
  .active-row {
    grid-template-columns: 240px 1fr;
    align-items: baseline;
    gap: var(--space-4);
  }
}

.active-row:first-child { border-top: 1px solid var(--border-faint); }

.active-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--gold);
}

.active-desc {
  color: var(--ivory-dim);
  font-size: 0.95rem;
}

.signature-block {
  max-width: 700px;
  margin: var(--space-5) auto 0;
  text-align: center;
  border: 1px solid var(--border-faint);
  padding: var(--space-5) var(--space-4);
}

.signature-block .eyebrow { display: block; }

.signature-block p {
  color: var(--ivory-dim);
  font-size: 1.05rem;
  margin-top: var(--space-2);
  line-height: 1.85;
}

.dermat-block {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-4);
  border: 1px dashed var(--border-faint);
}

.dermat-block p {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ivory);
}

.dermat-block span {
  display: block;
  margin-top: var(--space-2);
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-dim);
}

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

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}