/* ===========================
   LANDING PAGE STYLES - MODERN REDESIGN
   =========================== */

/* Accessibility helpers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.visually-readable {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

:root {
  /* Primary Colors */
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent: #8b5cf6;
  --accent-light: #a78bfa;

  /* Text Colors */
  --text: #1f2937;
  --text-muted: #6b7280;
  --text-light: #9ca3af;

  /* Background Colors */
  --bg: #ffffff;
  --bg-light: #f9fafb;
  --bg-gradient: linear-gradient(180deg, #ffffff 0%, #f9fafb 100%);
  --hero-gradient: linear-gradient(135deg, #667eea15 0%, #764ba215 50%, #f093fb15 100%);

  /* Border & Shadow */
  --border: #e5e7eb;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-colored: 0 8px 32px rgba(102, 126, 234, 0.25);

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

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}


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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

.animate-on-scroll {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 {
  animation-delay: 0.1s;
}

.animate-delay-2 {
  animation-delay: 0.2s;
}

.animate-delay-3 {
  animation-delay: 0.3s;
}

/* ===========================
   HEADER
   =========================== */
.landing-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

.logo svg {
  color: var(--primary);
  transition: color var(--transition-base);
}

/* Share Button */
.share-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.share-button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.share-button:active {
  transform: translateY(0);
}

.share-button svg {
  flex-shrink: 0;
}


/* ===========================
   HERO SECTION
   =========================== */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  max-width: 100%;
  margin: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  background: var(--hero-gradient);
  min-height: 600px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

.hero > * {
  max-width: 900px;
  width: 100%;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--spacing-md);
  color: var(--text);
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
  letter-spacing: -0.02em;
}


.tagline {
  font-size: 1.375rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xl);
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.cta-button {
  display: inline-block;
  background: var(--primary-gradient);
  color: white;
  padding: 1.125rem 3rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-colored);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.cta-button:hover::before {
  opacity: 1;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(102, 126, 234, 0.35);
}

.cta-button:active {
  transform: translateY(-1px);
}

.subtext {
  margin-top: var(--spacing-md);
  color: var(--text-light);
  font-size: 0.9375rem;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.subtext::before {
  content: '✓';
  color: var(--primary);
  font-weight: bold;
}

/* ===========================
   FEATURES SECTION
   =========================== */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: transparent;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 900px) {
  .features {
    grid-template-columns: 1fr;
  }
}

.feature {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.feature:hover::before {
  transform: scaleX(1);
}

.feature:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  background: var(--bg-light);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90px;
  height: 90px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
}

.feature:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-md);
}

.feature-icon::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-xl);
  padding: 2px;
  background: var(--primary-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature:hover .feature-icon::after {
  opacity: 0.5;
}

.feature-icon svg {
  color: var(--primary);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.feature h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text);
  transition: color var(--transition-base);
}

.feature:hover h3 {
  color: var(--primary);
}

.feature p {
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 1rem;
}

/* ===========================
   USE CASES SECTION
   =========================== */
.use-cases {
  max-width: 100%;
  margin: 0;
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  background: var(--bg-light);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.use-cases > h2,
.use-cases > .use-case-grid {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

.use-cases h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  color: var(--text);
  letter-spacing: -0.01em;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 900px) {
  .use-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .use-case-grid {
    grid-template-columns: 1fr;
  }
}

.use-case {
  padding: var(--spacing-xl) var(--spacing-md);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.use-case::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.use-case:hover::after {
  opacity: 0.05;
}

.use-case:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-6px) scale(1.02);
}

.use-case-emoji {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-base);
  position: relative;
  z-index: 1;
}

.use-case:hover .use-case-emoji {
  transform: scale(1.15) rotate(5deg);
}

.use-case h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text);
  position: relative;
  z-index: 1;
  transition: color var(--transition-base);
}

.use-case:hover h4 {
  color: var(--primary);
}

.use-case p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  position: relative;
  z-index: 1;
}

/* ===========================
   CTA SECTION
   =========================== */
.cta-section {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: transparent;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  color: var(--text);
  letter-spacing: -0.02em;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===========================
   FOOTER
   =========================== */
.landing-footer {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--bg-light);
  width: 100%;
  box-sizing: border-box;
}

.landing-footer small {
  font-size: 0.9375rem;
  display: block;
  opacity: 0.8;
}

/* ===========================
   FLOATING CTA BUTTON
   =========================== */
.floating-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  opacity: 0;
  transform: translateY(100px);
  transition: all var(--transition-base);
  pointer-events: none;
}

.floating-cta.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.floating-cta .cta-button {
  box-shadow: var(--shadow-lg);
  padding: 1rem 2rem;
  font-size: 1rem;
}

.floating-cta .cta-button:hover {
  transform: translateY(-4px);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1200px) {
  .features {
    max-width: 90%;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: 500px;
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero > * {
    max-width: 100%;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .tagline {
    font-size: 1.125rem;
  }

  .cta-section h2 {
    font-size: 1.875rem;
  }

  .floating-cta {
    bottom: 1.5rem;
    right: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-lg) var(--spacing-md);
    min-height: 450px;
  }

  .hero h1 {
    font-size: 1.875rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .cta-button {
    padding: 1rem 2rem;
    font-size: 1rem;
  }

  .landing-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .features,
  .use-cases,
  .cta-section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .feature {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .use-case {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .floating-cta {
    bottom: 1rem;
    right: 1rem;
  }

  .floating-cta .cta-button {
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }
}

/* ===========================
   FAQ SECTION
   =========================== */
.faq-section {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--bg);
}

.faq-section h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  text-align: center;
  color: var(--text);
  letter-spacing: -0.01em;
}

.faq-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  background: var(--bg);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-item summary {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-base);
  padding: var(--spacing-xs);
}

.faq-item summary:hover {
  color: var(--primary);
}

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

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

.faq-item[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item p {
  margin-top: var(--spacing-md);
  padding: 0 var(--spacing-xs);
  color: var(--text-muted);
  line-height: 1.7;
  animation: fadeIn 0.3s ease;
}

@media (max-width: 768px) {
  .faq-section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .faq-section h2 {
    font-size: 1.875rem;
  }

  .faq-item summary {
    font-size: 1rem;
  }
}