/* ============================================
   Kudos Chart — kudoschart.app
   Mobile-first responsive landing page
   ============================================ */

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: #1E293B;
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* --- Layout --- */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.3px;
}

.nav-logo img {
  border-radius: 22%;
  overflow: hidden;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #1E293B;
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
  display: none;
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding: 16px 24px;
  flex-direction: column;
  gap: 16px;
}

.nav-links.open {
  display: flex;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: #64748B;
  transition: color 0.15s;
}

.nav-links a:hover {
  color: #1E293B;
}

.nav-cta {
  background: linear-gradient(135deg, #F59E0B, #F97316);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  text-align: center;
  transition: opacity 0.15s;
}

.nav-cta:hover {
  opacity: 0.9;
  color: #fff;
}

/* --- Hero --- */
.hero {
  padding: 100px 0 60px;
  background: linear-gradient(160deg, #EFF6FF 0%, #FEF9E7 50%, #FEF3C7 100%);
  overflow: visible;
  position: relative;
  z-index: 1;
}

.hero-phone {
  max-height: 520px;
  overflow: hidden;
  border-radius: 0 0 40px 40px;
}

.hero-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.hero-text {
  text-align: center;
  max-width: 560px;
}

.hero-text h1 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.8px;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 18px;
  color: #475569;
  line-height: 1.6;
  margin-bottom: 28px;
}

.hero-note {
  margin-top: 12px;
  font-size: 13px;
  color: #94A3B8;
}

/* --- Email Form --- */
.email-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 420px;
}

.hero-text .email-form {
  margin: 0 auto;
}

.email-form input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid #E2E8F0;
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
}

.email-form input:focus {
  border-color: #F59E0B;
}

.email-form button {
  padding: 12px 20px;
  background: linear-gradient(135deg, #F59E0B, #F97316);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.15s;
}

.email-form button:hover {
  opacity: 0.9;
}

.email-form-centered {
  justify-content: center;
  margin: 0 auto;
}

.email-form .form-success {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: #16A34A;
  font-size: 15px;
}

/* --- Trust Bar --- */
.trust-bar {
  padding: 24px 0;
  background: #fff;
  border-bottom: 1px solid #F1F5F9;
  position: relative;
  z-index: 0;
}

.trust-bar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #475569;
}

.trust-badge {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-badge-purple {
  background: #F3E8FF;
  color: #9B59B6;
}

.trust-badge-rose {
  background: #FFE4E6;
  color: #E11D48;
}

.trust-badge-green {
  background: #DCFCE7;
  color: #16A34A;
}

/* --- Features --- */
.features {
  padding: 80px 0;
  background: #F8FAFC;
}

.features h2,
.how-it-works h2,
.science h2,
.deep-features h2,
.pricing h2,
.final-cta h2 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 40px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.feature-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
}

.feature-icon-gold { background: #FEF3C7; }
.feature-icon-teal { background: #CCFBF1; }
.feature-icon-purple { background: #F3E8FF; }
.feature-icon-blue { background: #DBEAFE; }

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 15px;
  color: #64748B;
  line-height: 1.6;
}

/* --- How It Works --- */
.how-it-works {
  padding: 80px 0;
  background: #fff;
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 720px;
  margin: 0 auto;
}

.step {
  text-align: center;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FEF3C7, #FDE68A);
  color: #D97706;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.step p {
  font-size: 15px;
  color: #64748B;
  max-width: 320px;
  margin: 0 auto;
}

.step-arrow {
  display: none;
  align-items: center;
  justify-content: center;
}

/* --- Science --- */
.science {
  padding: 80px 0;
  background: #F8FAFC;
}

.science-lead {
  text-align: center;
  font-size: 17px;
  color: #475569;
  max-width: 640px;
  margin: -20px auto 40px;
  line-height: 1.7;
}

.science-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.science-item {
  background: #fff;
  border-radius: 14px;
  padding: 24px;
  border-left: 4px solid #F59E0B;
}

.science-icon {
  font-size: 24px;
  margin-bottom: 8px;
}

.science-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.science-item p {
  font-size: 15px;
  color: #64748B;
  line-height: 1.6;
}

/* --- Screenshots Gallery --- */
.screenshots {
  padding: 80px 0;
  background: #fff;
  overflow: hidden;
}

.screenshots-grid {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 0 24px 20px;
  scroll-padding: 24px;
}

/* Hide scrollbar but keep functionality */
.screenshots-grid::-webkit-scrollbar {
  display: none;
}

.screenshots-grid {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.screenshot-item {
  flex: 0 0 auto;
  text-align: center;
  scroll-snap-align: center;
}

.phone-frame-sm {
  width: 200px;
  border-radius: 28px;
  padding: 7px;
}

.phone-frame-sm img {
  border-radius: 21px;
}

.screenshot-label {
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: #64748B;
}

/* --- Mid-page CTA --- */
.mid-cta {
  padding: 48px 0;
  background: linear-gradient(135deg, #FEF3C7, #FDE68A);
  text-align: center;
}

.mid-cta-text {
  font-size: 18px;
  font-weight: 700;
  color: #92400E;
  margin-bottom: 16px;
}

.mid-cta-btn {
  display: inline-block;
  padding: 14px 32px;
  background: linear-gradient(135deg, #F59E0B, #F97316);
  color: #fff;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  transition: opacity 0.15s;
}

.mid-cta-btn:hover {
  opacity: 0.9;
  color: #fff;
}

/* --- Founder Story --- */
.founder {
  padding: 80px 0;
  background: #F8FAFC;
}

.founder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.founder-icon {
  font-size: 48px;
}

.founder-content h2 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.founder-content p {
  font-size: 16px;
  color: #475569;
  line-height: 1.7;
  margin-bottom: 14px;
}

.founder-content p:last-child {
  margin-bottom: 0;
}

/* --- FAQ --- */
.faq {
  padding: 80px 0;
  background: #fff;
}

.faq h2 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 40px;
}

.faq-list {
  max-width: 640px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #E2E8F0;
}

.faq-item summary {
  padding: 20px 0;
  font-size: 16px;
  font-weight: 600;
  color: #1E293B;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #94A3B8;
  flex-shrink: 0;
  margin-left: 16px;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  padding: 0 0 20px;
  font-size: 15px;
  color: #64748B;
  line-height: 1.6;
}

/* --- Deep Features --- */
.deep-features {
  padding: 80px 0;
  background: #fff;
}

.deep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.deep-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  border-radius: 12px;
  background: #F8FAFC;
  transition: background 0.15s;
}

.deep-item:hover {
  background: #F1F5F9;
}

.deep-icon {
  font-size: 28px;
  flex-shrink: 0;
  margin-top: 2px;
}

.deep-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.deep-item p {
  font-size: 14px;
  color: #64748B;
  line-height: 1.5;
}

/* --- Pricing --- */
.pricing {
  padding: 80px 0;
  background: #F8FAFC;
}

.pricing-sub {
  text-align: center;
  color: #64748B;
  font-size: 16px;
  margin: -24px auto 40px;
  max-width: 480px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 680px;
  margin: 0 auto;
}

.pricing-card {
  background: #fff;
  border: 2px solid #E2E8F0;
  border-radius: 16px;
  padding: 32px 28px;
  position: relative;
}

.pricing-card-premium {
  border-color: #F59E0B;
  box-shadow: 0 4px 24px rgba(245, 158, 11, 0.12);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #F59E0B, #F97316);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}

.pricing-header {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #F1F5F9;
}

.pricing-header h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 4px;
}

.pricing-price {
  font-size: 32px;
  font-weight: 800;
  color: #F59E0B;
  margin-bottom: 2px;
}

.pricing-note {
  font-size: 13px;
  color: #94A3B8;
}

.pricing-card ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-card li {
  font-size: 15px;
  color: #475569;
  padding-left: 24px;
  position: relative;
}

.pricing-card li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: #16A34A;
  font-weight: 700;
}

/* --- Final CTA --- */
.final-cta {
  padding: 100px 0;
  background: linear-gradient(160deg, #EFF6FF 0%, #FEF9E7 50%, #FEF3C7 100%);
  text-align: center;
}

.final-cta h2 {
  font-size: 32px;
}

.final-sub {
  color: #475569;
  font-size: 18px;
  margin: -24px auto 36px;
  max-width: 480px;
  line-height: 1.6;
}

.final-note {
  margin-top: 16px;
  font-size: 14px;
  color: #94A3B8;
}

/* --- Footer --- */
.footer {
  padding: 24px 0;
  background: #fff;
  border-top: 1px solid #F1F5F9;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
}

.footer-brand img {
  border-radius: 22%;
  overflow: hidden;
}

.footer-copy {
  font-size: 13px;
  color: #94A3B8;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 13px;
  color: #64748B;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: #1E293B;
}

/* --- Legal Pages --- */
.legal-page {
  padding: 100px 0 60px;
}

.legal-content {
  max-width: 720px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  color: #1E293B;
}

.legal-content .legal-date {
  font-size: 14px;
  color: #94A3B8;
  margin-bottom: 40px;
}

.legal-content h2 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 12px;
  color: #1E293B;
}

.legal-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 8px;
  color: #334155;
}

.legal-content p {
  font-size: 15px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 16px;
}

.legal-content ul,
.legal-content ol {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-content ol {
  list-style: decimal;
}

.legal-content li {
  font-size: 15px;
  line-height: 1.7;
  color: #475569;
  margin-bottom: 8px;
}

.legal-content a {
  color: #F59E0B;
  font-weight: 500;
  transition: color 0.15s;
}

.legal-content a:hover {
  color: #D97706;
}

.legal-content .contact-email {
  display: inline-block;
  font-size: 17px;
  font-weight: 600;
  color: #F59E0B;
  margin: 8px 0;
}

/* --- Mobile Sticky CTA --- */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding: 10px 16px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.sticky-cta.visible {
  transform: translateY(0);
}

.sticky-cta-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  max-width: 420px;
  margin: 0 auto;
}

.sticky-cta-inner img {
  border-radius: 22%;
  overflow: hidden;
}

.sticky-cta-btn {
  flex: 1;
  text-align: center;
  padding: 10px 24px;
  background: linear-gradient(135deg, #F59E0B, #F97316);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  font-size: 15px;
  transition: opacity 0.15s;
}

.sticky-cta-btn:hover {
  opacity: 0.9;
  color: #fff;
}

/* --- Phone Frame --- */
.phone-frame {
  width: 280px;
  background: linear-gradient(145deg, #E8E8ED, #D1D1D6);
  border-radius: 40px;
  padding: 10px;
  box-shadow:
    0 25px 60px rgba(0, 0, 0, 0.12),
    0 10px 24px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
}

/* No fake notch — screenshots include their own status bar */

.phone-frame img {
  border-radius: 30px;
  width: 100%;
  height: auto;
  position: relative;
  z-index: 1;
}

/* ============================================
   Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    background: none;
    backdrop-filter: none;
    border: none;
    padding: 0;
    flex-direction: row;
    align-items: center;
    gap: 28px;
  }

  .email-form {
    flex-direction: row;
    gap: 8px;
  }

  .trust-bar-inner {
    flex-direction: row;
    justify-content: center;
    gap: 40px;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .science-grid {
    grid-template-columns: 1fr 1fr;
  }

  .deep-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr 1fr;
  }

  .screenshots-grid {
    justify-content: center;
    overflow-x: visible;
    scroll-snap-type: none;
  }

  .sticky-cta {
    display: none;
  }
}

/* ============================================
   Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .hero {
    padding: 120px 0 80px;
  }

  .hero-grid {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
  }

  .hero-text {
    text-align: left;
    max-width: 520px;
  }

  .hero-text h1 {
    font-size: 44px;
  }

  .hero-text .email-form {
    margin: 0;
  }

  .hero-note {
    text-align: left;
  }

  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .features h2,
  .how-it-works h2,
  .science h2,
  .deep-features h2,
  .pricing h2 {
    font-size: 34px;
  }

  .final-cta h2 {
    font-size: 38px;
  }
}

/* ============================================
   Tablet step arrows
   ============================================ */
@media (min-width: 768px) {
  .steps {
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: start;
  }

  .step-arrow {
    display: flex;
    padding-top: 12px;
  }
}

/* ============================================
   Scroll Animations
   ============================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}