/* ============================================================
   Srishti Natural Beauty — Hydra Facial Page
   Design System: "The Ethereal Curator"
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Manrope:wght@300;400;500;600;700&family=Noto+Serif:ital,wght@0,300..900;1,300..900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  /* Surfaces */
  --surface:                   #fff8f5;
  --surface-bright:            #fff8f5;
  --surface-dim:               #e1d8d4;
  --surface-container-lowest:  #ffffff;
  --surface-container-low:     #fbf2ed;
  --surface-container:         #f5ece7;
  --surface-container-high:    #efe6e2;
  --surface-container-highest: #e9e1dc;
  --surface-variant:           #e9e1dc;

  /* Primary (warm mocha) */
  --primary:              #655c5a;
  --on-primary:           #ffffff;
  --primary-container:    #f5e8e4;
  --on-primary-container: #716764;
  --primary-fixed:        #ede0dc;
  --primary-fixed-dim:    #d0c4c0;
  --inverse-primary:      #d0c4c0;

  /* Secondary (sage) */
  --secondary:              #526352;
  --on-secondary:           #ffffff;
  --secondary-container:    #d5e8d2;
  --on-secondary-container: #586958;

  /* Tertiary (blush) */
  --tertiary:           #6e5a53;
  --on-tertiary:        #ffffff;
  --tertiary-container: #ffe5dc;

  /* On-surface */
  --on-surface:         #1e1b18;
  --on-surface-variant: #4e4542;
  --on-background:      #1e1b18;
  --background:         #fff8f5;
  --inverse-surface:    #34302c;
  --inverse-on-surface: #f8efea;

  /* Outlines */
  --outline:         #807571;
  --outline-variant: #d1c4bf;

  /* Error */
  --error:           #ba1a1a;
  --error-container: #ffdad6;

  /* Surface tint */
  --surface-tint: #655c5a;

  /* Shadows (ambient, never pure black) */
  --shadow-ambient: 0 12px 40px rgba(44, 40, 37, 0.05);
  --shadow-card:    0 4px 24px  rgba(44, 40, 37, 0.07);

  /* Border-radius scale */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1.25rem;
  --radius-2xl:  2rem;
  --radius-full: 9999px;

  /* Typography */
  --font-display: 'Noto Serif', 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Manrope', system-ui, sans-serif;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Max widths */
  --max-content: 1280px;
  --max-prose:   72ch;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background-color: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

::selection {
  background: var(--primary-container);
  color: var(--on-surface);
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }

/* ---------- Material Symbols ---------- */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1;
  display: inline-block;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}

/* ---------- Utilities ---------- */
.container {
  max-width: var(--max-content);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.serif   { font-family: var(--font-display); }
.italic  { font-style: italic; }

/* ---------- Tonal layering (no hard borders) ---------- */
.tonal-layer { transition: background-color 0.3s ease; }

/* ---------- Glassmorphism ---------- */
.glass {
  background: rgba(255, 248, 245, 0.80);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

/* ---------- Clip-path editorial mask ---------- */
.editorial-mask {
  clip-path: polygon(0 0, 100% 5%, 95% 100%, 5% 95%);
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  box-shadow: var(--shadow-ambient);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  max-width: var(--max-content);
  margin-inline: auto;
}

.nav__logo {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--primary);
}

.nav__links {
  display: none;
  gap: var(--space-lg);
  list-style: none;
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

.nav__links a {
  color: var(--outline);
  transition: color 0.25s;
}
.nav__links a:hover    { color: var(--primary); }
.nav__links a.active   {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 2px;
}

.nav__actions { display: flex; align-items: center; gap: var(--space-sm); }

.nav__icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--outline);
  display: flex;
  align-items: center;
  transition: color 0.25s;
}
.nav__icon-btn:hover { color: var(--primary); }

@media (min-width: 768px) {
  .nav__links { display: flex; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-full);
  transition: opacity 0.25s, transform 0.15s;
}
.btn:hover  { opacity: 0.85; }
.btn:active { transform: scale(0.96); }

.btn--primary {
  background: var(--primary);
  color: var(--on-primary);
  padding: 0.625rem 1.5rem;
  box-shadow: var(--shadow-ambient);
}

.btn--primary-lg {
  background: var(--primary);
  color: var(--on-primary);
  padding: 1rem 2rem;
  font-size: 1rem;
  box-shadow: var(--shadow-ambient);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem var(--space-lg) var(--space-3xl);
  background: linear-gradient(135deg, var(--primary-container) 0%, var(--surface) 70%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url('https://lh3.googleusercontent.com/aida-public/AB6AXuBkX5Mt1G9H4ODZO-C1c8s5kQRJwb9RDj01isuRT00ounJX71eNUPgrE4IVHSM7O4tk1ST0qDXRZ5aA-n7T8cNERuTGncXeDIGcwm0cM7JvgpwNrjREidTurQhIxNPFQUkziZOfoFBLJWd-Ee_xWH_toMaimuFYRDZtHyFAHXwfFkFrv8EUe9VN-LtZPdCk3o56rnQ9vPd1rn6iNvBSwltu8nQuPTnw1eL5NEscvLTAPqaIfIO81kTnrmqNW_CAjLMk3_8bg_vd75A');
  background-size: cover;
  background-position: center;
  opacity: 0.38;
  mix-blend-mode: multiply;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 56rem;
  text-align: center;
}

.hero__eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--on-surface-variant);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--on-surface);
  margin-bottom: var(--space-lg);
}

.hero__title--accent {
  font-style: italic;
  font-weight: 300;
  color: var(--primary);
}

.hero__body {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--on-surface-variant);
  max-width: 44ch;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

/* ============================================================
   PILLARS SECTION
   ============================================================ */
.pillars {
  background: var(--surface);
  padding-block: var(--space-3xl);
}

.pillars__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .pillars__grid { grid-template-columns: 1fr 1fr; }
}

/* Image column */
.pillars__image-wrap {
  position: relative;
}

.pillars__image-bg {
  position: absolute;
  inset: -1rem;
  background: var(--surface-container-low);
  border-radius: var(--radius-2xl);
  z-index: 0;
  transform: rotate(-2deg);
}

.pillars__image {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: var(--radius-xl);
  object-fit: cover;
}

/* Steps */
.pillars__heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--on-surface);
  margin-bottom: var(--space-2xl);
}

.pillar-steps { display: flex; flex-direction: column; gap: var(--space-xl); }

.pillar-step { display: flex; align-items: flex-start; gap: var(--space-md); }

.pillar-step__icon {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  background: var(--primary-container);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pillar-step__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--on-surface);
  margin-bottom: 0.375rem;
}

.pillar-step__desc {
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ============================================================
   BENEFITS SECTION
   ============================================================ */
.benefits {
  background: var(--surface-container-low);
  padding-block: var(--space-3xl);
}

.section-eyebrow {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--outline);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--on-surface);
  margin-bottom: var(--space-lg);
}

.section-intro {
  color: var(--on-surface-variant);
  max-width: 52ch;
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: var(--space-2xl);
}

.benefits__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.benefit-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s, box-shadow 0.25s;
}
.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(44, 40, 37, 0.10);
}

.benefit-card__icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  background: var(--tertiary-container);
  color: var(--tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.benefit-card__title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--on-surface);
  margin-bottom: var(--space-xs);
}

.benefit-card__desc {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  line-height: 1.65;
}

/* ============================================================
   SKIN TYPES SECTION
   ============================================================ */
.skin-types {
  background: var(--surface);
  padding-block: var(--space-3xl);
}

.skin-chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.skin-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.skin-chip .material-symbols-outlined { font-size: 1rem; }

/* ============================================================
   FAQ SECTION
   ============================================================ */
.faq {
  background: var(--surface-container-low);
  padding-block: var(--space-3xl);
}

.faq__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (min-width: 1024px) {
  .faq__grid { grid-template-columns: 5fr 7fr; gap: var(--space-3xl); }
}

.faq__sidebar { position: sticky; top: 6rem; }

.faq__sidebar-body {
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

.faq__contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--primary);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--primary-fixed-dim);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.faq__contact-link:hover { opacity: 0.7; }

/* Accordion */
.accordion { display: flex; flex-direction: column; gap: 0; }

.accordion-item {
  border-bottom: 1px solid rgba(209, 196, 191, 0.5); /* outline-variant at 50% */
}
.accordion-item:first-child { border-top: 1px solid rgba(209, 196, 191, 0.5); }

.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-md);
  text-align: left;
  color: var(--on-surface);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 400;
  transition: color 0.2s;
}
.accordion-trigger:hover { color: var(--primary); }

.accordion-trigger__icon {
  flex-shrink: 0;
  color: var(--outline);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s;
}
.accordion-item.open .accordion-trigger__icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.accordion-item.open .accordion-trigger { color: var(--primary); }

.accordion-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.accordion-item.open .accordion-body { grid-template-rows: 1fr; }

.accordion-body__inner {
  overflow: hidden;
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  line-height: 1.75;
  padding-bottom: var(--space-md);
}

.accordion-body__inner ul {
  list-style: none;
  margin-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.accordion-body__inner li::before {
  content: '·';
  color: var(--primary);
  font-weight: 700;
  margin-right: 0.5rem;
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: var(--primary-container);
  padding-block: var(--space-3xl);
  text-align: center;
}

.cta-banner__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  color: var(--on-surface);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.cta-banner__body {
  color: var(--on-surface-variant);
  font-size: 1rem;
  max-width: 44ch;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
  line-height: 1.75;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--surface-container-low);
  padding-block: var(--space-2xl) var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 1fr 2fr 1fr; align-items: start; }
}

.footer__brand {
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--primary);
  display: block;
  margin-bottom: var(--space-xs);
}

.footer__tagline { color: var(--outline); font-size: 0.875rem; }

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  list-style: none;
}

.footer__links a {
  color: var(--outline);
  font-size: 0.875rem;
  transition: color 0.2s;
  text-underline-offset: 4px;
}
.footer__links a:hover { color: var(--primary); text-decoration: underline; }

.footer__copy {
  color: var(--outline);
  font-size: 0.8125rem;
  line-height: 1.6;
}

@media (min-width: 768px) { .footer__copy { text-align: right; } }

.footer__divider {
  margin-top: var(--space-xl);
  border: none;
  border-top: 1px solid rgba(209, 196, 191, 0.4);
}

/* ============================================================
   SCHEMA / SEO (visually hidden)
   ============================================================ */
.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;
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}