/* ============================================
   Hearly Website — Shared Styles
   ============================================ */

:root {
  /* Stone palette */
  --bg: #FAFAF9;
  --bg-secondary: #F5F5F4;
  --bg-tertiary: #E7E5E4;
  --text-primary: #1C1917;
  --text-secondary: #57534E;
  --text-tertiary: #A8A29E;
  --border: #D6D3D1;

  /* Amber accent */
  --accent: #F59E0B;
  --accent-hover: #D97706;
  --accent-light: #FEF3C7;
  --accent-dark: #B45309;

  /* Spacing */
  --section-padding: 6rem 1.5rem;
  --container-max: 1120px;
  --radius: 16px;
  --radius-sm: 10px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1C1917;
    --bg-secondary: #292524;
    --bg-tertiary: #44403C;
    --text-primary: #FAFAF9;
    --text-secondary: #A8A29E;
    --text-tertiary: #78716C;
    --border: #44403C;
    --accent-light: #451A03;
  }
}

/* ============================================
   Reset & Base
   ============================================ */

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
}

/* ============================================
   Layout
   ============================================ */

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

section {
  padding: var(--section-padding);
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.nav.scrolled {
  background: rgba(250, 250, 249, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .nav.scrolled {
    background: rgba(28, 25, 23, 0.8);
  }
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: background var(--transition), transform var(--transition);
}

.nav-cta:hover {
  background: var(--accent-hover);
  color: #fff !important;
  transform: scale(1.02);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
  }

  .nav-links.open {
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    font-size: 1.5rem;
  }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent), #EF4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.app-store-badge {
  height: 54px;
  transition: transform var(--transition);
}

.app-store-badge:hover {
  transform: scale(1.03);
}

.hero-secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.hero-secondary-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

/* ============================================
   CSS-only Phone Illustration
   ============================================ */

.hero-phone {
  margin-top: 3.5rem;
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 260px;
  aspect-ratio: 9/19;
  background: var(--bg-secondary);
  border: 3px solid var(--border);
  border-radius: 36px;
  position: relative;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.05),
    0 20px 60px rgba(0,0,0,0.12),
    inset 0 0 0 1px rgba(255,255,255,0.08);
}

@media (prefers-color-scheme: dark) {
  .phone-frame {
    border-color: var(--bg-tertiary);
    box-shadow:
      0 0 0 1px rgba(255,255,255,0.05),
      0 20px 60px rgba(0,0,0,0.4),
      inset 0 0 0 1px rgba(255,255,255,0.04);
  }
}

.phone-notch {
  width: 100px;
  height: 28px;
  background: var(--text-primary);
  border-radius: 0 0 18px 18px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.phone-screen {
  padding: 0 16px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.phone-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 4px 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.phone-status-icons {
  display: flex;
  gap: 3px;
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.phone-app-ui {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-top: 8px;
}

.phone-app-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Animated waveform */
.phone-waveform {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  height: 80px;
  width: 100%;
  padding: 0 8px;
}

.wave-bar {
  width: 8px;
  height: var(--h, 50%);
  background: linear-gradient(to top, var(--accent), var(--accent-hover));
  border-radius: 4px;
  animation: waveAnim 1.4s ease-in-out infinite alternate;
}

.wave-bar:nth-child(1)  { animation-delay: 0s; }
.wave-bar:nth-child(2)  { animation-delay: 0.1s; }
.wave-bar:nth-child(3)  { animation-delay: 0.2s; }
.wave-bar:nth-child(4)  { animation-delay: 0.3s; }
.wave-bar:nth-child(5)  { animation-delay: 0.4s; }
.wave-bar:nth-child(6)  { animation-delay: 0.15s; }
.wave-bar:nth-child(7)  { animation-delay: 0.35s; }
.wave-bar:nth-child(8)  { animation-delay: 0.05s; }
.wave-bar:nth-child(9)  { animation-delay: 0.25s; }
.wave-bar:nth-child(10) { animation-delay: 0.45s; }
.wave-bar:nth-child(11) { animation-delay: 0.12s; }
.wave-bar:nth-child(12) { animation-delay: 0.28s; }

@keyframes waveAnim {
  0%   { transform: scaleY(0.4); opacity: 0.6; }
  100% { transform: scaleY(1);   opacity: 1; }
}

.phone-db-display {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.phone-db-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.phone-db-unit {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-tertiary);
}

.phone-profile-pill {
  font-size: 0.6875rem;
  font-weight: 600;
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
}

.phone-boost-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-top: auto;
  margin-bottom: 28px;
}

.phone-boost-btn span {
  font-size: 0.5625rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.1em;
  position: relative;
  z-index: 1;
}

.phone-boost-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0.3;
  animation: pulseRing 2s ease-out infinite;
}

@keyframes pulseRing {
  0%   { transform: scale(1);   opacity: 0.3; }
  70%  { transform: scale(1.2); opacity: 0; }
  100% { transform: scale(1.2); opacity: 0; }
}

/* ============================================
   Features Section
   ============================================ */

.features {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 4rem;
}

.section-header p {
  margin-top: 1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

@media (prefers-color-scheme: dark) {
  .feature-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
  }
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 1rem;
}

/* ============================================
   How It Works
   ============================================ */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
  text-align: center;
}

.step {
  padding: 1.5rem;
}

.step-number {
  width: 56px;
  height: 56px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.25rem;
}

.step h3 {
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 1rem;
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-secondary) 100%);
}

.cta h2 {
  margin-bottom: 1rem;
}

.cta p {
  max-width: 480px;
  margin: 0 auto 2rem;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

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

/* ============================================
   Animations (scroll-triggered)
   ============================================ */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Policy & Support — Prose Layout
   ============================================ */

.page-hero {
  padding: 8rem 1.5rem 3rem;
  text-align: center;
}

.page-hero p {
  margin-top: 0.75rem;
}

.prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem 6rem;
}

.prose h2 {
  font-size: 1.5rem;
  margin-top: 3rem;
  margin-bottom: 0.75rem;
}

.prose h3 {
  font-size: 1.125rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.prose p {
  margin-bottom: 1rem;
  font-size: 1rem;
}

.prose ul, .prose ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.prose li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-size: 1rem;
  line-height: 1.7;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.prose strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ============================================
   FAQ Accordion
   ============================================ */

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.25rem 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-family: inherit;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-tertiary);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.open .faq-question::after {
  content: '−';
}

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

.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: 1.25rem;
}

.faq-answer p {
  font-size: 0.9375rem;
}

/* ============================================
   Contact Form
   ============================================ */

.contact-form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
  appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.875rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition), transform var(--transition);
}

.form-submit:hover {
  background: var(--accent-hover);
  transform: scale(1.01);
}

/* ============================================
   Info Cards (Support Page)
   ============================================ */

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.info-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  text-align: center;
}

.info-card .icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.info-card h4 {
  margin-bottom: 0.25rem;
}

.info-card p {
  font-size: 0.875rem;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  :root {
    --section-padding: 4rem 1.25rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}