/* ===== Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Funnel+Display:wght@500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ===== CSS Variables ===== */
:root {
  --primary-500: #001233;
  --primary-400: #03045E;
  --primary-300: #071FC8;
  --primary-200: #1E96FC;
  --primary-100: #90E0Ef;
  --primary: var(--primary-300);

  --dark-300: #000000;
  --dark-200: #212121;
  --dark-100: #2d2d2d;
  --dark: var(--dark-300);

  --light-300: #ffffff;
  --light-200: #f9fafb;
  --light-100: #f4f6ff;
  --light: var(--light-300);

  --font-header: 'Funnel Display', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;

  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 16px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 35px rgba(7, 42, 200, 0.15);

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

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light-300);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-header);
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
  color: var(--dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); font-weight: 600; }

p { margin: 0 0 1rem 0; line-height: 1.7; }

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

a:hover { color: var(--primary-200); }

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

section {
  padding: var(--spacing-2xl) 0;
}

/* ===== Navigation ===== */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 15px rgba(7, 42, 200, 0.08);
  transition: var(--transition);
}

.nav-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(7, 42, 200, 0.2) 50%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
}

.nav-header:not(.transparent)::after { opacity: 1; }

.nav-header.transparent {
  background-color: transparent;
  box-shadow: none;
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo-container { display: flex; justify-content: center; }
.nav-logo { height: 40px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--dark-200);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

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

.app-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1rem;
  background: linear-gradient(135deg, #e8f4fd 0%, #ffffff 100%);
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  text-decoration: none;
  color: #1f2937;
  font-size: 0.95rem;
  font-weight: 500;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}

.app-link:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
  color: #1f2937;
}

.app-link-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.app-link-arrow {
  width: 12px;
  height: 12px;
  opacity: 0.5;
  flex-shrink: 0;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark-200);
  margin: 5px 0;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .nav-logo { width: 180px; }

  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 1rem var(--spacing-md) 1.5rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    border-top: 1px solid rgba(7, 42, 200, 0.08);
  }

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

@media (max-width: 500px) {
  .nav-logo { width: 150px; }
}

/* ===== Hero Sections ===== */
.hero {
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 58%, #90e0ef 100%);
  padding: 10rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(144, 224, 239, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(7, 42, 200, 0.3) 0%, transparent 50%);
  pointer-events: none;
}

.hero h1 {
  color: white;
  position: relative;
  z-index: 1;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.hero .subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
  color: var(--primary);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  color: white;
}

.btn-blue {
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(7, 42, 200, 0.3);
}

.btn-blue:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(7, 42, 200, 0.4);
  color: white;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  margin-top: 2rem;
}

/* ===== Screenshot/Image Display ===== */
.screenshot {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(7, 42, 200, 0.08);
}

.screenshot-wrapper {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding-top: var(--spacing-lg);
}

/* ===== Feature Sections ===== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

.section-header p {
  color: var(--dark-100);
  font-size: 1.125rem;
  margin-top: 1rem;
}

.section-label {
  display: inline-block;
  background: linear-gradient(135deg, rgba(7, 42, 200, 0.08) 0%, rgba(30, 150, 252, 0.08) 100%);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.375rem 1rem;
  border-radius: 100px;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  padding: var(--spacing-xl) 0;
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-text h2 {
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-text p {
  color: var(--dark-100);
  font-size: 1.05rem;
  line-height: 1.8;
}

.feature-text ul {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.feature-text ul li {
  padding: 0.5rem 0;
  padding-left: 1.75rem;
  position: relative;
  color: var(--dark-100);
  font-size: 1.05rem;
}

.feature-text ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 100%);
}

.feature-image img {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(7, 42, 200, 0.08);
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.card {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(7, 42, 200, 0.06);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(7, 42, 200, 0.08) 0%, rgba(30, 150, 252, 0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--primary);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

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

.card p {
  color: var(--dark-100);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.7;
}

/* ===== Alternating Background ===== */
.bg-light {
  background-color: var(--light-100);
}

.bg-gradient {
  background: linear-gradient(180deg, var(--light-100) 0%, var(--light-300) 100%);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 58%, #90e0ef 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(144, 224, 239, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 50%, rgba(7, 42, 200, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.cta-section h2 {
  color: white;
  position: relative;
  z-index: 1;
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.cta-section .btn {
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.footer {
  background: linear-gradient(135deg, #001233 0%, #03045E 100%);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-md);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(144, 224, 239, 0.5) 50%, transparent 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  margin-top: 1rem;
}

.footer-brand img {
  height: 32px;
}

.footer-col h4,
.footer-col .footer-heading {
  display: block;
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  padding: 0.3rem 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  margin: 0;
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Keyword Cloud (SEO text) ===== */
.keyword-bar {
  text-align: center;
  padding: var(--spacing-lg) 0;
  color: var(--dark-100);
  font-size: 0.9rem;
  opacity: 0.7;
}

.keyword-bar span {
  display: inline-block;
  padding: 0.25rem 0.75rem;
}

/* ===== Legal / Prose Content ===== */
.legal-content {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  padding-top: 8rem;
}

.legal-content h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.legal-content .updated {
  font-size: 0.875rem;
  color: var(--dark-100);
  opacity: 0.6;
  margin-bottom: 2rem;
}

.legal-content h2 {
  font-size: 1.25rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.legal-content p,
.legal-content ul,
.legal-content ol {
  line-height: 1.8;
  color: var(--dark-100);
  font-size: 1rem;
}

.legal-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content ul li {
  margin-bottom: 0.25rem;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .feature-row.reverse {
    direction: ltr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
  }

  .container { padding: 0 var(--spacing-sm); }

  .hero { padding: 7rem 0 3rem; }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
}


/* ===== Tutorials ===== */
.tutorials-hero {
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 58%, #90e0ef 100%);
  padding: 8rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.tutorials-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(144, 224, 239, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(7, 42, 200, 0.3) 0%, transparent 50%);
  pointer-events: none;
}

.tutorials-hero h1 {
  color: white;
  position: relative;
  z-index: 1;
  margin-bottom: 1rem;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.tutorials-hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  max-width: 650px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.tutorials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl) 0;
}

.tutorial-card {
  background: white;
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid rgba(7, 42, 200, 0.08);
}

.tutorial-card:hover {
  box-shadow: 0 12px 35px rgba(7, 42, 200, 0.15);
}

.tutorial-video {
  width: 100%;
  display: block;
  background: #000;
}

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

.tutorial-number {
  display: inline-block;
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 100%);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
}
.tutorial-number:hover {
  color: white;
}

.tutorial-info h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #072ac8 0%, #1e96fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tutorial-info p {
  color: var(--dark-100);
  line-height: 1.7;
  margin: 0;
}

@media (max-width: 768px) {
  .tutorials-hero {
    padding: 6rem 0 3rem;
  }

  .tutorial-info {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}