/* Karaoke Sync Landing Page Styles */
/* Design inspired by Olivia Renee Media */

:root {
  /* Color Palette */
  --primary-color: #00265e;
  --secondary-color: #a7cbff;
  --accent-color: #5b9cff;
  --heading-color: #001534;
  --body-color: #575151;
  --white-color: #ffffff;
  --grey-color: #eaf2ff;
  --light-grey: #f8fafc;
  --dark-border: rgba(0, 21, 52, 0.2);

  /* Typography */
  --heading-font: 'Murecho', sans-serif;
  --body-font: 'Poppins', sans-serif;

  /* Border Radius */
  --radius-sm: 10px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --radius-xl: 50px;

  /* Transitions */
  --transition-fast: 0.2s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* Accessibility - Skip Link (inline styles handle positioning) */
.skip-link:focus {
  outline: 3px solid var(--secondary-color) !important;
  outline-offset: 2px !important;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--body-font);
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-color);
  background-color: var(--white-color);
  overflow-x: hidden;
}

.page {
  position: relative;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* =====================
   HEADER / NAVIGATION
   ===================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 15px 0;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.header.scrolled {
  background-color: rgba(0, 38, 94, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.nav-brand {
  font-family: var(--heading-font);
  font-size: 20px;
  font-weight: 600;
  color: var(--white-color);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  padding: 8px 10px;
}

.nav-menu .nav-link {
  color: var(--white-color);
  padding: 8px 20px;
  border-radius: var(--radius-xl);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 14px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-menu .nav-link:hover {
  background-color: var(--white-color);
  color: var(--primary-color);
}

.nav-download {
  background-color: var(--secondary-color) !important;
  color: var(--primary-color) !important;
}

.nav-download:hover {
  background-color: var(--white-color) !important;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--white-color);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  color: var(--heading-color);
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: 1rem;
}

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

/* Accessibility - Focus Indicators */
a:focus,
button:focus,
select:focus,
input:focus {
  outline: 3px solid var(--secondary-color);
  outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid var(--secondary-color);
  outline-offset: 2px;
}

/* =====================
   ANIMATIONS
   ===================== */

/* Fade In */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Slide Up */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Bounce */
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Float */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Gradient Shift */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn 0.8s ease-out forwards;
}

.animate-slide-up {
  animation: slideUp 0.8s ease-out forwards;
}

.animate-bounce {
  animation: bounce 2s infinite;
}

.delay-1 {
  animation-delay: 0.2s;
  opacity: 0;
  animation-fill-mode: forwards;
}

.delay-2 {
  animation-delay: 0.4s;
  opacity: 0;
  animation-fill-mode: forwards;
}

.delay-3 {
  animation-delay: 0.6s;
  opacity: 0;
  animation-fill-mode: forwards;
}

/* Scroll Animation */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================
   HERO SECTION
   ===================== */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, #003d8f 50%, var(--primary-color) 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
  overflow: hidden;
  padding: 120px 0 60px;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(167, 203, 255, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(91, 156, 255, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 40px 20px;
}

.app-branding {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.app-branding-text {
  text-align: left;
}

.app-name {
  color: var(--white-color);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 4px;
}

.app-tagline {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  margin-bottom: 0;
}

.hero-title {
  color: var(--white-color);
  margin-bottom: 24px;
  font-weight: 500;
  line-height: 1.15;
}

.title-highlight {
  display: block;
  background: linear-gradient(90deg, var(--secondary-color), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
}

.app-store-button {
  display: inline-block;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.app-store-button:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.app-store-button.large .app-store-badge {
  height: 60px;
}

.app-store-badge {
  height: 50px;
  width: auto;
  display: block;
  border: none;
  outline: none;
}

/* =====================
   FEATURES SECTION
   ===================== */

.features-section {
  padding: 100px 0;
  background-color: var(--white-color);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-title {
  margin-bottom: 20px;
}

.section-description {
  font-size: 17px;
  color: var(--body-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.feature-card {
  background: var(--grey-color);
  border-radius: var(--radius-md);
  padding: 40px 30px;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 38, 94, 0.1);
}

.feature-icon {
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  color: var(--white-color);
  transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-title {
  margin-bottom: 12px;
  font-size: 22px;
}

.feature-description {
  color: var(--body-color);
  margin-bottom: 0;
  line-height: 1.7;
}

/* =====================
   PRIVACY SECTION
   ===================== */

.privacy-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--grey-color) 0%, var(--white-color) 100%);
}

.privacy-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.privacy-icon {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  border-radius: 50%;
  margin: 0 auto 30px;
  color: var(--white-color);
}

.privacy-title {
  margin-bottom: 16px;
}

.privacy-description {
  font-size: 17px;
  color: var(--body-color);
  margin-bottom: 0;
}

/* =====================
   PRICING SECTION
   ===================== */

.pricing-section {
  padding: 100px 0;
  background-color: var(--white-color);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--grey-color);
  border-radius: var(--radius-md);
  padding: 40px 30px;
  text-align: center;
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 38, 94, 0.1);
}

.pricing-card.featured {
  background: var(--primary-color);
  color: var(--white-color);
  transform: scale(1.05);
}

.pricing-card.featured:hover {
  transform: scale(1.08);
}

.pricing-card.featured .pricing-name,
.pricing-card.featured .pricing-features li,
.pricing-card.featured .price-amount,
.pricing-card.featured .price-period {
  color: var(--white-color);
}

.pricing-card.featured .check-icon {
  color: var(--secondary-color);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--secondary-color);
  color: var(--primary-color);
  padding: 6px 20px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pricing-header {
  margin-bottom: 30px;
}

.pricing-name {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--heading-color);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-amount {
  font-family: var(--heading-font);
  font-size: 48px;
  font-weight: 700;
  color: var(--heading-color);
}

.price-period {
  font-size: 16px;
  color: var(--body-color);
}

.price-savings {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: 13px;
  font-weight: 500;
  margin-top: 10px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 30px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 0;
  color: var(--body-color);
  font-size: 15px;
}

.check-icon {
  color: var(--accent-color);
  font-weight: bold;
}

.pricing-button {
  display: inline-block;
  background: var(--primary-color);
  color: var(--white-color);
  padding: 14px 32px;
  border-radius: var(--radius-xl);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.5px;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.pricing-button:hover {
  background: #003d8f;
  transform: translateY(-2px);
}

.pricing-button.featured {
  background: var(--secondary-color);
  color: var(--primary-color);
}

.pricing-button.featured:hover {
  background: var(--white-color);
}

/* =====================
   CTA SECTION
   ===================== */

.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, #003d8f 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(167, 203, 255, 0.1) 0%, transparent 40%),
              radial-gradient(circle at 80% 20%, rgba(91, 156, 255, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  color: var(--white-color);
  margin-bottom: 20px;
}

.cta-description {
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
  margin-bottom: 40px;
}

/* =====================
   FOOTER
   ===================== */

.footer {
  background-color: var(--heading-color);
  padding: 40px 0;
}

.footer-content {
  text-align: center;
}

.footer-brand {
  max-width: none;
}

.footer-logo {
  font-family: var(--heading-font);
  font-size: 24px;
  font-weight: 600;
  color: var(--white-color);
  margin-bottom: 8px;
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  margin-bottom: 0;
}

/* =====================
   RESPONSIVE DESIGN
   ===================== */

@media (max-width: 991px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 20px;
    right: 20px;
    flex-direction: column;
    background: var(--primary-color);
    border-radius: var(--radius-md);
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal);
  }

  .nav-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-menu .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px 20px;
  }


  .mobile-menu-btn {
    display: flex;
  }

  .hero-section {
    min-height: auto;
    padding: 120px 0 80px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .pricing-card.featured:hover {
    transform: translateY(-5px);
  }
}

@media (max-width: 767px) {
  .hero-section {
    padding: 100px 0 60px;
  }

  .hero-content {
    padding: 20px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .features-section,
  .pricing-section {
    padding: 60px 0;
  }

  .feature-card,
  .pricing-card {
    padding: 30px 24px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .cta-section {
    padding: 60px 0;
  }

}

@media (max-width: 480px) {
  .app-branding {
    flex-direction: column;
    gap: 15px;
  }

  .app-branding-text {
    text-align: center;
  }

  .app-icon {
    width: 70px;
    height: 70px;
  }

  .app-name {
    font-size: 24px;
  }

  .price-amount {
    font-size: 36px;
  }
}

/* =====================
   UTILITY CLASSES
   ===================== */

.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mt-auto {
  margin-top: auto;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}