/* ============================================================
   Lather.AI — Landing Page Styles
   Mobile-first. Edit --accent to change the brand color.
   ============================================================ */

/* --- Variables -------------------------------------------- */
:root {
  --bg:           #f8f4ed;
  --cream:        #fffdf8;
  --dark:         #0f1c18;
  --accent:       #4a3580;
  --accent-light: #edeaf8;
  --accent-mid:   #7b68b0;
  --muted:        #7a6a58;
  --border:       #e0d4c2;
  --problem-bg:   #0f1c18;

  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

  --max-w:    1120px;
  --pad-x:    20px;
  --section-py: 80px;
  --radius:   18px;
  --radius-sm: 10px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input { font: inherit; }

/* --- Utilities --------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.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;
}

/* --- Animations -------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay { transition-delay: 0.15s; }

/* --- Typography -------------------------------------------- */
.section-eyebrow {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--dark);
}
.section-header { margin-bottom: 52px; }

/* --- Buttons ---------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  border-radius: 100px;
  padding: 14px 26px;
  white-space: nowrap;
  transition: background 0.2s, transform 0.15s;
}
.btn-primary:hover  { background: #3a2870; }
.btn-primary:active { transform: scale(0.97); }
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-large { font-size: 16px; padding: 17px 32px; }

/* --- Logo -------------------------------------------------- */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.logo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--dark);
  letter-spacing: -0.3px;
}

/* --- Nav --------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.nav.scrolled {
  border-color: var(--border);
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-links {
  display: none;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--dark); }
.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 100px;
  font-size: 13px !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: #3a2870 !important; }

.nav-burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: flex;
  flex-direction: column;
  padding: 16px 20px 24px;
  border-top: 1px solid var(--border);
  gap: 4px;
}
.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--dark);
  padding: 12px 4px;
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border-bottom: none; }

/* --- Hero -------------------------------------------------- */
.hero {
  padding: 72px 0 80px;
}
.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(44px, 8vw, 72px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -1.5px;
  color: var(--dark);
  margin-bottom: 20px;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}
.hero-sub {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.65;
  max-width: 480px;
  margin-bottom: 36px;
}
.hero-form { margin-bottom: 18px; }
.input-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.input-row input,
.waitlist-form input {
  flex: 1;
  min-width: 200px;
  background: var(--cream);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 14px 20px;
  font-size: 15px;
  color: var(--dark);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input-row input::placeholder,
.waitlist-form input::placeholder { color: #b0a090; }
.input-row input:focus,
.waitlist-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}
.form-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

/* Formspree SDK state — success */
[data-fs-success] {
  display: none;
  font-size: 14px;
  font-weight: 500;
  color: #2a6a30;
  margin-bottom: 12px;
}

/* Formspree SDK state — field and global errors */
[data-fs-error]:not(:empty) {
  display: block;
  font-size: 12px;
  color: #b93030;
  margin-top: 6px;
  margin-bottom: 4px;
}

/* Disable button while submitting */
[data-fs-submit-btn]:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.hero-secondary {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
}
.hero-secondary:hover { color: var(--dark); }

/* --- Phone Mockup ------------------------------------------ */
.hero-visual { display: flex; justify-content: center; }

.phone-frame {
  width: 248px;
  background: var(--dark);
  border-radius: 42px;
  padding: 10px;
  box-shadow:
    0 40px 80px rgba(0,0,0,0.22),
    0 0 0 1px rgba(255,255,255,0.06) inset;
  position: relative;
}
.phone-notch {
  width: 80px; height: 26px;
  background: var(--dark);
  border-radius: 0 0 18px 18px;
  margin: 0 auto 0;
  position: relative;
  z-index: 1;
}
.phone-screen {
  background: var(--bg);
  border-radius: 32px;
  padding: 14px 14px 18px;
  min-height: 460px;
  margin-top: -14px;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  padding-top: 8px;
}
.app-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--dark);
  flex-shrink: 0;
}
.app-name {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--dark);
  letter-spacing: -0.2px;
}

.grade-card {
  background: #d8e8d4;
  border-radius: 14px;
  padding: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.grade-left { flex: 1; }
.grade-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #2a5020;
  margin-bottom: 3px;
}
.grade-verdict {
  font-family: var(--font-serif);
  font-size: 14px;
  color: #1a3a16;
}
.grade-letter {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  color: #1a3a16;
}

.app-section-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.ing-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.ing-pill {
  font-size: 9px;
  font-weight: 600;
  border-radius: 100px;
  padding: 2px 8px;
  white-space: nowrap;
}
.ing-pill.good  { background: #d4e8d0; color: #1a3a16; }
.ing-pill.ok    { background: #e8e4d8; color: #504030; }
.ing-pill.watch { background: #f0ddd6; color: #7a2010; }
.ing-name {
  font-size: 11px;
  color: var(--dark);
  font-weight: 500;
}
.app-note {
  margin-top: 12px;
  background: var(--accent-light);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 10.5px;
  color: var(--accent);
  line-height: 1.5;
}

/* --- Problem ----------------------------------------------- */
.problem {
  background: var(--problem-bg);
  color: var(--bg);
  padding: var(--section-py) 0;
}
.problem-inner { max-width: 800px; }
.problem-headline {
  font-family: var(--font-serif);
  font-size: clamp(28px, 5vw, 46px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.problem-lede {
  font-size: 18px;
  color: var(--accent-mid);
  font-style: italic;
  font-family: var(--font-serif);
  margin-bottom: 52px;
}
.problem-points {
  display: grid;
  gap: 28px;
}
.problem-point {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.problem-num {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-mid);
  letter-spacing: 1px;
  padding-top: 3px;
  flex-shrink: 0;
}
.problem-point p {
  font-size: 17px;
  color: #c8bfb0;
  line-height: 1.6;
}

/* --- How it works ------------------------------------------ */
.how { padding: var(--section-py) 0; }
.steps {
  display: grid;
  gap: 32px;
}
.step {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
}
.step-number {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--accent-mid);
  margin-bottom: 16px;
}
.step-icon {
  width: 48px; height: 48px;
  background: var(--accent-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 18px;
}
.step-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}
.step-body {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.65;
}

/* --- Features ---------------------------------------------- */
.features { padding: var(--section-py) 0; background: var(--cream); }
.features-grid {
  display: grid;
  gap: 16px;
}
.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.feature-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.07);
  transform: translateY(-2px);
}
.feature-icon {
  width: 42px; height: 42px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 16px;
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
  line-height: 1.3;
}
.feature-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

/* --- Who it's for ------------------------------------------ */
.who { padding: var(--section-py) 0; }
.who-inner { max-width: 640px; }
.who-body {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.75;
  margin-top: 24px;
}
.who-body + .who-body { margin-top: 16px; }

/* --- Waitlist ---------------------------------------------- */
.waitlist {
  background: var(--accent);
  padding: var(--section-py) 0;
  color: #fff;
}
.waitlist-inner { max-width: 560px; }
.waitlist-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 14px;
}
.waitlist-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  line-height: 1.65;
  margin-bottom: 32px;
}
.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 12px;
}
.waitlist-form input {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.25);
  color: #fff;
  min-width: unset;
}
.waitlist-form input::placeholder { color: rgba(255,255,255,0.5); }
.waitlist-form input:focus {
  border-color: rgba(255,255,255,0.6);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.15);
}
.waitlist .btn-primary {
  background: #fff;
  color: var(--accent);
  width: 100%;
  font-size: 16px;
  padding: 16px;
}
.waitlist .btn-primary:hover { background: #f0ecff; }
.waitlist .form-note { color: rgba(255,255,255,0.55); }
.waitlist [data-fs-success] { color: #b8f0c0; }
.waitlist [data-fs-error]:not(:empty) { color: #ffc0c0; }

/* --- Footer ------------------------------------------------ */
.footer {
  background: var(--dark);
  color: var(--bg);
  padding: 40px 0 32px;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 24px;
}
.footer .logo-text { color: var(--bg); }
.footer .logo-dot  { background: var(--accent-mid); }
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}
.footer-links a:hover { color: rgba(255,255,255,0.9); }
.footer-bottom {}
.affiliate-disclosure {
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  line-height: 1.7;
  max-width: 680px;
  margin-bottom: 12px;
}
.copyright {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* --- Responsive: tablet (640px+) --------------------------- */
@media (min-width: 640px) {
  :root { --pad-x: 32px; }

  .nav-links    { display: flex; }
  .nav-burger   { display: none; }
  .mobile-menu  { display: none !important; }

  .hero-inner {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }
  .hero-copy { flex: 1; min-width: 0; }
  .hero-visual { flex-shrink: 0; }

  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .waitlist-form {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .waitlist-form input { flex: 1; min-width: 200px; }
  .waitlist .btn-primary { width: auto; }
}

/* --- Responsive: desktop (960px+) -------------------------- */
@media (min-width: 960px) {
  :root {
    --pad-x: 48px;
    --section-py: 112px;
  }

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

  .problem-points { grid-template-columns: repeat(3, 1fr); }
  .problem-point  { flex-direction: column; gap: 12px; }

  .phone-frame { width: 268px; }
}

/* --- Focus styles for accessibility ------------------------ */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}