/* ============================================================
   Pearly — Landing Page Styles
   Mobile-first, 8px spacing scale, CSS custom properties
   ============================================================ */

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

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Design tokens ---------------------------------------- */
:root {
  /* Palette — extracted from Pearly packaging */
  --color-white:      #ffffff;
  --color-off-white:  #f7f9fb;
  --color-navy:       #1a2e5a;
  --color-blue:       #1e5bbf;
  --color-sky:        #5ab4e5;
  --color-sky-light:  #d6eef9;
  --color-mint:       #3dbf8a;
  --color-text:       #1a2e5a;
  --color-text-muted: #5a6a88;
  --color-border:     #d0dce8;

  /* Spacing scale (8px base) */
  --space-1:  8px;
  --space-2:  16px;
  --space-3:  24px;
  --space-4:  32px;
  --space-5:  40px;
  --space-6:  48px;
  --space-7:  56px;
  --space-8:  64px;
  --space-10: 80px;
  --space-12: 96px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Shadow */
  --shadow-card: 0 2px 16px rgba(26,46,90,.08);
  --shadow-nav:  0 2px 12px rgba(26,46,90,.12);

  /* Transitions */
  --transition: 0.2s ease;
}

/* --- Typography ------------------------------------------- */
h1, h2, h3, h4, h5 {
  font-family: 'Playfair Display', serif;
  line-height: 1.2;
  color: var(--color-navy);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.25rem; }

p { color: var(--color-text-muted); }

/* --- Layout helpers --------------------------------------- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.section { padding: var(--space-10) 0; }
.section--alt { background: var(--color-off-white); }

/* --- Buttons ---------------------------------------------- */
.btn {
  display: inline-block;
  padding: 14px var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.01em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.btn--primary {
  background: var(--color-blue);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30,91,191,.3);
}

.btn--large {
  padding: 18px var(--space-6);
  font-size: 1.1rem;
  border-radius: var(--radius-md);
}

/* ============================================================
   1. NAVIGATION
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-nav);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav__logo img {
  height: 64px;
  width: auto;
}

/* ============================================================
   2. HERO
   ============================================================ */
.hero {
  background: linear-gradient(135deg, var(--color-sky-light) 0%, var(--color-white) 60%);
  padding: var(--space-10) 0 var(--space-12);
  overflow: hidden;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
}

.hero__content { max-width: 620px; text-align: center; }

.hero__kicker {
  display: inline-block;
  background: var(--color-sky-light);
  color: var(--color-blue);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px var(--space-2);
  border-radius: 100px;
  margin-bottom: var(--space-2);
}

.hero__headline {
  margin-bottom: var(--space-3);
}

.hero__headline em {
  font-style: normal;
  color: var(--color-blue);
}

.hero__subhead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.hero__cta { margin-bottom: var(--space-3); width: 100%; }
.hero__cta .btn { width: 100%; }

.hero__trust {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.hero__image-wrap {
  width: 100%;
  max-width: 520px;
  position: relative;
}

.hero__image-wrap img {
  width: 100%;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 16px 48px rgba(90,180,229,.3));
}

/* ============================================================
   3. TESTIMONIALS
   ============================================================ */

/* Verified strip */
.reviews-strip {
  background: #f0fbf5;
  border-top: 1px solid #b6e8cc;
  border-bottom: 1px solid #b6e8cc;
  padding: 11px 0;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: #1a7a4c;
  letter-spacing: 0.01em;
}

/* Section header */
.testimonials__header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto var(--space-6);
}
.testimonials__header h2 { margin-bottom: var(--space-1); }
.testimonials__header p  { font-size: 1.05rem; }

/* Featured 3 — mobile-first, 3-col on desktop */
.testimonials__featured {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

/* Review card */
.review-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-mint);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(26,46,90,.13);
}

.review-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.review-card__stars {
  color: #f5a623;
  font-size: 1rem;
  letter-spacing: 1px;
}

.review-card__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-navy);
}

.review-card__text {
  font-size: 1rem;
  line-height: 1.65;
  color: #3d4f6b;
  flex: 1;
}

.review-card__tag {
  display: inline-block;
  background: #e4f7ee;
  color: #1a7a4c;
  font-size: 0.73rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  align-self: flex-start;
  margin-top: var(--space-1);
  letter-spacing: 0.01em;
}

/* Aggregate rating row */
.testimonials__aggregate {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-2);
}

.testimonials__aggregate-stars {
  color: #f5a623;
  font-size: 1.15rem;
  letter-spacing: 2px;
}

.testimonials__aggregate-score {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-navy);
}

.testimonials__aggregate-count {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Toggle button */
.testimonials__toggle-wrap {
  text-align: center;
  margin-bottom: var(--space-2);
}

.testimonials__toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px var(--space-5);
  border: 2px solid var(--color-blue);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-blue);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.testimonials__toggle:hover {
  background: var(--color-blue);
  color: var(--color-white);
}
.testimonials__toggle-arrow {
  display: inline-block;
  transition: transform 0.3s ease;
}
.testimonials__toggle.expanded .testimonials__toggle-arrow {
  transform: rotate(180deg);
}

/* Expandable more section */
.testimonials__more {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s ease;
}

.testimonials__more-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding-top: var(--space-4);
}

/* CTA after expansion */
.testimonials__cta-wrap {
  text-align: center;
  padding: var(--space-5) 0 var(--space-2);
}
.testimonials__cta {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.testimonials__cta:hover { color: var(--color-navy); }

/* ============================================================
   4. PROBLEM → SOLUTION (merged with Benefits)
   ============================================================ */
.problem-solution__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-8);
}

.problem-solution__header p { margin-top: var(--space-2); font-size: 1.05rem; }

.problem-solution__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.ps-col {
  padding: var(--space-5);
  border-radius: var(--radius-md);
}

.ps-col--problem {
  background: #fff5f5;
  border: 1px solid #fcd5d5;
}

.ps-col--solution {
  background: #f0fbf5;
  border: 1px solid #b6e8cc;
}

.ps-col__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-navy);
}

.ps-col__icon { font-size: 1.4rem; }

.ps-col__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.ps-col__item:last-child { margin-bottom: 0; }

.ps-item-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.ps-col__item p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Benefit cards (merged into this section) */
.benefits-heading {
  text-align: center;
  margin-bottom: var(--space-5);
}

.benefit-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.benefit-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(26,46,90,.12);
}

.benefit-card__icon { font-size: 2rem; margin-bottom: var(--space-2); }

.benefit-card__title {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.benefit-card p { font-size: 0.92rem; }

/* ============================================================
   6. WHY PEARLY
   ============================================================ */
.why-pearly__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* Single-column override when image is removed */
.why-pearly__single-col {
  max-width: 720px;
  margin: 0 auto;
}

.why-pearly__heading { margin-bottom: var(--space-4); }

.why-list { display: flex; flex-direction: column; gap: var(--space-3); }

.why-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.why-item__check {
  width: 24px;
  height: 24px;
  background: var(--color-mint);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
}

.why-item p { font-size: 0.97rem; line-height: 1.55; }
.why-item p strong { color: var(--color-navy); }

.dosage-callout {
  background: linear-gradient(135deg, var(--color-sky-light), #e6f4ff);
  border-left: 4px solid var(--color-blue);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-4);
}

.dosage-callout p { color: var(--color-navy); font-size: 0.97rem; line-height: 1.6; }
.dosage-callout strong { font-weight: 700; }

/* ============================================================
   7. URGENCY / OFFER
   ============================================================ */
.offer {
  background: linear-gradient(135deg, var(--color-navy) 0%, #1e3a73 100%);
  color: var(--color-white);
  text-align: center;
}

.offer h2 { color: var(--color-white); margin-bottom: var(--space-3); }

.offer__body {
  max-width: 560px;
  margin: 0 auto var(--space-5);
  font-size: 1.05rem;
  color: rgba(255,255,255,.85);
  line-height: 1.7;
}

.offer__image {
  width: 100%;
  max-width: 360px;
  margin: 0 auto var(--space-6);
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 16px 48px rgba(0,0,0,.35));
}

.offer .btn--primary {
  background: var(--color-sky);
  color: var(--color-navy);
  font-weight: 700;
}
.offer .btn--primary:hover {
  background: var(--color-white);
  color: var(--color-navy);
  box-shadow: 0 6px 24px rgba(90,180,229,.4);
}

/* ============================================================
   8. WAITLIST FORM
   ============================================================ */
.waitlist { background: var(--color-off-white); }

.waitlist__inner { max-width: 560px; margin: 0 auto; text-align: center; }

.waitlist__heading { margin-bottom: var(--space-2); }
.waitlist__sub { font-size: 1.05rem; margin-bottom: var(--space-5); }

.waitlist-form { display: flex; flex-direction: column; gap: var(--space-2); }

.form-group { display: flex; flex-direction: column; gap: 6px; text-align: left; }

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-navy);
}

.form-group input {
  padding: 14px var(--space-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(30,91,191,.12);
}

.form-group input.error { border-color: #e04040; }
.field-error { font-size: 0.8rem; color: #e04040; margin-top: 2px; display: none; }
.field-error.visible { display: block; }

.waitlist-form .btn { width: 100%; margin-top: var(--space-1); }

.form-error {
  display: none;
  font-size: 0.9rem;
  color: #e04040;
  margin-top: var(--space-2);
  text-align: center;
}
.form-error.visible { display: block; }

.waitlist-form .btn.loading { opacity: 0.7; pointer-events: none; }

.form-note {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.form-success {
  display: none;
  background: #f0fbf5;
  border: 1.5px solid #3dbf8a;
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4);
  text-align: center;
}

.form-success.visible { display: block; }

.form-success__emoji { font-size: 2.5rem; margin-bottom: var(--space-2); }

.form-success h3 {
  font-family: 'Playfair Display', serif;
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.form-success p { font-size: 0.95rem; }

/* ============================================================
   9. FAQ
   ============================================================ */
.faq__header { text-align: center; margin-bottom: var(--space-6); }

.faq-list { max-width: 720px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child { border-top: 1px solid var(--color-border); }

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  text-align: left;
  transition: color var(--transition);
}

.faq-trigger:hover { color: var(--color-blue); }

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  position: relative;
  border-radius: 50%;
  background: var(--color-sky-light);
  transition: background var(--transition);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-blue);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.faq-icon::before { width: 12px; height: 2px; top: 11px; left: 6px; }
.faq-icon::after  { width: 2px; height: 12px; top: 6px; left: 11px; }

.faq-item.open .faq-icon { background: var(--color-blue); }
.faq-item.open .faq-icon::before,
.faq-item.open .faq-icon::after { background: var(--color-white); }
.faq-item.open .faq-icon::after { transform: rotate(90deg); opacity: 0; }

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-body p {
  padding-bottom: var(--space-3);
  font-size: 0.97rem;
  line-height: 1.7;
}

/* ============================================================
   10. FOOTER
   ============================================================ */
.footer {
  background: var(--color-navy);
  color: rgba(255,255,255,.75);
  padding: var(--space-8) 0 var(--space-5);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

/* Footer logo — actual brand image on a white pill */
.footer__logo-link { display: inline-block; }
.footer__logo-link:hover .footer__logo-pill { opacity: 0.85; }

.footer__logo-pill {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 8px 18px;
  display: inline-flex;
  align-items: center;
  transition: opacity var(--transition);
}

.footer__logo-img {
  height: 56px;
  width: auto;
  display: block;
}

/* Social links with icons */
.footer__social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer__social-link:hover { color: var(--color-white); }

.footer__social-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.footer__tagline { font-size: 0.88rem; margin-top: var(--space-1); color: rgba(255,255,255,.55); }

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-3);
}

.footer__links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--color-white); }

.footer__legal { font-size: 0.78rem; line-height: 1.6; }
.footer__pet-warning { margin-top: var(--space-1); font-size: 0.76rem; color: rgba(255,255,255,.45); }

/* ============================================================
   RESPONSIVE — Tablet 640px+
   ============================================================ */
/* Sticky mobile CTA bar — hidden on desktop */
.mobile-cta-bar { display: none; }

/* ============================================================
   MOBILE CONVERSION OPTIMISATION  ≤ 768px
   All rules here are additive — desktop layout is untouched.
   ============================================================ */
@media (max-width: 768px) {

  /* --- Hero ------------------------------------------------- */
  .hero {
    padding-top: var(--space-5);      /* 40px → CTA above fold */
    padding-bottom: var(--space-6);   /* 48px */
  }

  .hero__inner { gap: var(--space-4); } /* tighter gap between content + image */

  /* 28px max headline per spec */
  .hero__headline { font-size: 28px; }

  /* CTA always full-width, 52px min-height */
  .hero__cta .btn {
    width: 100%;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* --- Section spacing -------------------------------------- */
  .section { padding: var(--space-5) 0; } /* 40px top/bottom */

  /* --- Form inputs ------------------------------------------ */
  /* 52px height + 16px font prevents iOS auto-zoom on focus  */
  .form-group input {
    min-height: 52px;
    font-size: 16px;
    padding: 16px var(--space-2);
  }

  /* Submit button 52px+ */
  .waitlist-form .btn {
    min-height: 52px;
  }

  /* --- Offer CTA full-width --------------------------------- */
  .offer .btn--primary {
    display: block;
    width: 100%;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* --- Kicker badge — prevent line-wrap on 375px ------------ */
  .hero__kicker {
    letter-spacing: 0.04em;
    font-size: 0.75rem;
  }

  /* --- Body text minimum 16px ------------------------------- */
  .ps-col__item p,
  .benefit-card p,
  .why-item p,
  .dosage-callout p,
  .faq-body p,
  .offer__body,
  .waitlist__sub { font-size: 1rem; }

  /* --- Sticky mobile CTA bar -------------------------------- */
  .mobile-cta-bar {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: var(--color-mint);
    padding: var(--space-2) var(--space-3);
    /* Safe area for iPhone notch/home indicator */
    padding-bottom: max(var(--space-2), env(safe-area-inset-bottom));
    box-shadow: 0 -4px 20px rgba(0, 0, 0, .18);
    transform: translateY(0);
    transition: transform 0.3s ease;
  }

  .mobile-cta-bar.hidden {
    transform: translateY(110%);
  }

  .mobile-cta-bar__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 52px;
    background: transparent;
    color: var(--color-white);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.01em;
    border-radius: var(--radius-sm);
  }

  /* Push footer above the bar so it doesn't sit under it */
  .footer { padding-bottom: calc(var(--space-5) + 76px); }
}

@media (min-width: 640px) {
  .hero__cta .btn { width: auto; }

  .proof-bar__inner {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-5);
    text-align: left;
  }
  .proof-bar__divider { display: block; }
  .proof-bar__rating { align-items: flex-start; }

  .testimonials__featured    { grid-template-columns: repeat(3, 1fr); }
  .testimonials__more-grid   { grid-template-columns: 1fr 1fr; }

  .benefit-cards { grid-template-columns: repeat(3, 1fr); }

  .problem-solution__cols { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   RESPONSIVE — Desktop 960px+
   ============================================================ */
@media (min-width: 960px) {
  .hero__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-8);
  }
  .hero__content { text-align: left; max-width: 540px; }
  .hero__cta .btn { width: auto; }

  /* Why Pearly stays single-column (image removed) */
}