/* ==========================================
   Peppy Website - Main Stylesheet
   ========================================== */

/* CSS Custom Properties */
:root {
  /* Brand Colors - Light Mode */
  --color-primary: #F79FA5;
  --color-primary-hover: #f58a92;
  --color-primary-light: #fce4e6;
  --color-background: #BEE3F3;
  --color-surface: #FFFFFF;
  --color-text-primary: #2D3748;
  --color-text-secondary: #4A5568;
  --color-text-light: #FFFFFF;
  --color-border: #E2E8F0;
  --color-overlay: rgba(0, 0, 0, 0.5);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--spacing-md);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-narrow {
  max-width: 800px;
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section-white {
  background-color: var(--color-surface);
}

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

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(190, 227, 243, 0.95);
  backdrop-filter: blur(10px);
  transition: box-shadow var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-img {
  width: 48px;
  height: auto;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.nav {
  display: none;
}

.nav-list {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  font-weight: 500;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  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);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-lg);
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mobile-nav-link {
  font-size: var(--font-size-lg);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
}

/* Desktop Navigation */
@media (min-width: 768px) {
  .nav {
    display: block;
  }

  .mobile-menu-btn {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-light);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-text-primary);
}

.btn-outline:hover {
  background-color: var(--color-text-primary);
  color: var(--color-text-light);
}

.btn-white {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
}

.btn-white:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* App Store Buttons */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: #000;
  color: #fff;
  border-radius: var(--radius-lg);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.store-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.store-btn svg {
  width: 24px;
  height: 24px;
}

.store-btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.store-btn-text small {
  font-size: var(--font-size-xs);
  opacity: 0.8;
}

.store-btn-text span {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  padding-top: calc(72px + var(--spacing-4xl));
  padding-bottom: var(--spacing-4xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-logo {
  width: 150px;
  margin: 0 auto var(--spacing-xl);
  animation: float 3s ease-in-out infinite;
}

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

.hero-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Cloud decorations */
.cloud {
  position: absolute;
  opacity: 0.3;
  z-index: 0;
}

.cloud-1 {
  top: 20%;
  left: 5%;
  width: 80px;
  animation: float 4s ease-in-out infinite;
}

.cloud-2 {
  top: 60%;
  right: 10%;
  width: 60px;
  animation: float 5s ease-in-out infinite 1s;
}

.cloud-3 {
  bottom: 10%;
  left: 15%;
  width: 50px;
  animation: float 6s ease-in-out infinite 2s;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

  .hero-logo {
    width: 200px;
  }
}

/* ==========================================
   Features Section
   ========================================== */
.features {
  background-color: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.feature-card {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-text-light);
}

.feature-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================
   Categories Section
   ========================================== */
.categories {
  text-align: center;
}

.categories-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
}

.category-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.category-tag:hover {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  transform: scale(1.05);
}

.category-tag svg {
  width: 16px;
  height: 16px;
}

/* ==========================================
   Quote Preview Section
   ========================================== */
.quote-preview {
  background-color: var(--color-surface);
  text-align: center;
}

.quote-container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-3xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, #f8b4b9 100%);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.quote-text {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text-light);
  line-height: 1.4;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quote-dots {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

.quote-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.4);
  transition: background-color var(--transition-fast);
}

.quote-dot.active {
  background-color: var(--color-text-light);
}

@media (min-width: 768px) {
  .quote-text {
    font-size: var(--font-size-3xl);
  }
}

/* ==========================================
   Peppy Pro Section
   ========================================== */
.peppy-pro {
  background: linear-gradient(135deg, var(--color-background) 0%, #d4f0fa 100%);
  text-align: center;
}

.pro-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-text-light);
  border-radius: var(--radius-full);
  font-weight: 600;
  margin-bottom: var(--spacing-xl);
}

.pro-features {
  display: grid;
  gap: var(--spacing-md);
  max-width: 500px;
  margin: var(--spacing-2xl) auto;
  text-align: left;
}

.pro-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
}

.pro-feature-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pro-feature-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

/* ==========================================
   Download CTA Section
   ========================================== */
.download-cta {
  background-color: var(--color-surface);
  text-align: center;
}

.download-cta .section-title {
  margin-bottom: var(--spacing-md);
}

.download-cta .section-subtitle {
  margin-bottom: var(--spacing-2xl);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
  background-color: var(--color-text-primary);
  color: var(--color-text-light);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  gap: var(--spacing-2xl);
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.footer-logo-img {
  width: 40px;
}

.footer-logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-primary);
}

.footer-contact {
  color: rgba(255, 255, 255, 0.8);
}

.footer-contact a {
  color: var(--color-primary);
}

.footer-bottom {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
    text-align: left;
  }

  .footer-logo {
    justify-content: flex-start;
  }

  .footer-links {
    justify-content: center;
  }

  .footer-contact {
    text-align: right;
  }
}

/* ==========================================
   Legal Pages (Terms, Privacy)
   ========================================== */
.legal-page {
  padding-top: calc(72px + var(--spacing-3xl));
  padding-bottom: var(--spacing-4xl);
  background-color: var(--color-surface);
  min-height: 100vh;
}

.legal-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.legal-title {
  margin-bottom: var(--spacing-md);
}

.legal-updated {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h2 {
  font-size: var(--font-size-xl);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.legal-content h3 {
  font-size: var(--font-size-lg);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.legal-content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.legal-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

.legal-content li {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  list-style: disc;
}

.legal-content a {
  color: var(--color-primary);
}

.legal-content a:hover {
  text-decoration: underline;
}

/* ==========================================
   Contact Page
   ========================================== */
.contact-page {
  padding-top: calc(72px + var(--spacing-3xl));
  padding-bottom: var(--spacing-4xl);
  min-height: 100vh;
}

.contact-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.contact-grid {
  display: grid;
  gap: var(--spacing-2xl);
  max-width: 900px;
  margin: 0 auto;
}

.contact-info {
  background-color: var(--color-surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  text-align: center;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.contact-email svg {
  width: 24px;
  height: 24px;
}

.contact-info p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.contact-form-container {
  background-color: var(--color-surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
}

.contact-form {
  display: grid;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  margin-top: var(--spacing-md);
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 2fr;
  }

  .contact-info {
    text-align: left;
  }
}

/* ==========================================
   Animations
   ========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* Stagger animation for children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0ms; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 100ms; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 200ms; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 300ms; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 400ms; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 500ms; }

/* ==========================================
   Utilities
   ========================================== */
.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;
}

.hidden {
  display: none !important;
}

@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .hide-desktop {
    display: none !important;
  }
}