/* ==========================================================================
   pallaidium — Landing Page Styles
   Design: Clean, modern, purple/lavender accents, connected-nodes motif
   ========================================================================== */

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

:root {
  --purple-50:  #f0efff;
  --purple-100: #e0defe;
  --purple-200: #c5c0fe;
  --purple-300: #a49dfd;
  --purple-400: #8278fd;
  --purple-500: #614ffd;
  --purple-600: #5443e0;
  --purple-700: #4737c3;
  --purple-800: #3a2ca6;
  --text:       #1a1a2e;
  --text-light: #4a4a6a;
  --bg:         #ffffff;
  --bg-alt:     #f5f4ff;
  --border:     #e4e2f0;
  --radius:     12px;
  --radius-lg:  20px;
  --shadow:     0 4px 24px rgba(97, 79, 253, 0.08);
  --shadow-lg:  0 8px 40px rgba(97, 79, 253, 0.14);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Typography ---------- */
h1, h2, h3 {
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.15rem; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; }

.highlight {
  background: linear-gradient(135deg, var(--purple-400), var(--purple-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-ai {
  color: var(--purple-600);
  font-weight: 700;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple-600), var(--purple-700));
  color: #fff;
  border-color: var(--purple-600);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--purple-700), var(--purple-800));
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(97, 79, 253, 0.35);
}

.btn-outline {
  color: var(--purple-600);
  border-color: var(--purple-300);
  background: transparent;
}
.btn-outline:hover {
  background: var(--purple-50);
  border-color: var(--purple-500);
  transform: translateY(-2px);
}

.btn-nav {
  padding: 10px 24px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 18px 44px;
  font-size: 1.05rem;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}
.logo-ai {
  color: var(--purple-600);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--purple-600); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
  background: linear-gradient(170deg, var(--bg) 40%, var(--purple-50) 100%);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-light);
  margin: 24px 0 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- Sections ---------- */
.section {
  padding: 100px 0;
}
.section-alt {
  background: var(--bg-alt);
}

.section-title {
  margin-bottom: 16px;
  color: var(--text);
}
.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--purple-500), var(--purple-300));
  border-radius: 2px;
  margin-top: 12px;
}

.section-intro {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin-bottom: 48px;
}

.subsection-title {
  font-size: 1.5rem;
  margin-top: 72px;
  margin-bottom: 12px;
}

/* ---------- Two-Column ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 32px;
}
.col-text {
  font-size: 1rem;
  color: var(--text-light);
}

/* ---------- Callout ---------- */
.callout-block {
  background: linear-gradient(135deg, var(--purple-100), var(--purple-50));
  border-left: 4px solid var(--purple-500);
  padding: 32px 40px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 56px;
  font-size: 1.15rem;
  color: var(--text);
  line-height: 1.6;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--purple-200);
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--purple-600);
  margin-bottom: 20px;
}
.card-icon svg { width: 100%; height: 100%; }

.card h3 {
  margin-bottom: 12px;
  color: var(--text);
}
.card p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ---------- Solution ---------- */
.solution-block {
  max-width: 780px;
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-top: 32px;
}

/* ---------- Ecosystem ---------- */
.ecosystem-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 24px;
}

.eco-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 28px;
  transition: var(--transition);
}
.eco-item:hover {
  border-color: var(--purple-300);
  box-shadow: var(--shadow);
}
.eco-item svg { height: 36px; width: auto; flex-shrink: 0; }
.eco-item span {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

/* ---------- Traditional Analytics ---------- */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.analytics-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}
.analytics-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--purple-200);
}

.analytics-icon {
  width: 44px;
  height: 44px;
  color: var(--purple-600);
  margin-bottom: 16px;
}
.analytics-icon svg { width: 100%; height: 100%; }

.analytics-card h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
  color: var(--text);
}
.analytics-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.65;
}

.analytics-footer {
  margin-top: 40px;
  padding: 24px 32px;
  background: linear-gradient(135deg, var(--purple-100), var(--purple-50));
  border-radius: var(--radius-lg);
  font-size: 1rem;
  color: var(--text);
  line-height: 1.7;
}

/* ---------- Benefits ---------- */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 32px;
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.benefit-item:hover {
  background: rgba(139, 92, 246, 0.04);
}

.benefit-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  color: var(--purple-600);
}
.benefit-icon svg { width: 100%; height: 100%; }

.benefit-item h3 {
  margin-bottom: 8px;
  color: var(--text);
}
.benefit-item p {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ---------- Testimonials ---------- */
.testimonials-carousel {
  position: relative;
  overflow: hidden;
  margin-top: 16px;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
  flex: 0 0 100%;
  min-width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  transition: var(--transition);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--purple-200);
}

.testimonial-quote {
  position: relative;
}

.quote-icon {
  width: 36px;
  height: 36px;
  color: var(--purple-200);
  margin-bottom: 16px;
}

.testimonial-quote p {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-light);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.testimonial-avatar {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple-500), var(--purple-700));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
}

.testimonial-author strong {
  display: block;
  font-size: 1rem;
  color: var(--text);
}
.testimonial-author span {
  font-size: 0.85rem;
  color: var(--text-light);
}

.testimonials-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}

.testimonial-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.testimonial-btn:hover {
  border-color: var(--purple-400);
  color: var(--purple-600);
  background: var(--purple-50);
}
.testimonial-btn:disabled {
  opacity: 0.3;
  cursor: default;
}
.testimonial-btn svg {
  width: 20px;
  height: 20px;
}

.testimonial-dots {
  display: flex;
  gap: 8px;
}
.testimonial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}
.testimonial-dot.active {
  background: var(--purple-500);
  transform: scale(1.25);
}

@media (max-width: 768px) {
  .testimonial-card {
    padding: 28px 24px;
  }
  .testimonial-quote p {
    font-size: 0.95rem;
  }
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 80px 0 100px;
  background: linear-gradient(170deg, var(--bg) 0%, var(--purple-50) 100%);
}

.cta-block {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-block h2 {
  margin-bottom: 20px;
}
.cta-text {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 8px;
}
.cta-bold {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--purple-700);
  margin-bottom: 36px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 40px;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer .logo {
  color: #fff;
  font-size: 1.3rem;
}
.footer .logo-ai {
  color: var(--purple-300);
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 6px;
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 0.85rem;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--purple-300); }

.footer-copy {
  font-size: 0.8rem;
  opacity: 0.5;
  margin-top: 8px;
}

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .analytics-grid {
    grid-template-columns: 1fr;
  }
  .hero-content { max-width: 100%; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: var(--transition);
    opacity: 0;
    pointer-events: none;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 16px 24px;
  }
  .nav-links .btn-nav {
    margin: 8px 24px 16px;
    text-align: center;
  }

  .section { padding: 64px 0; }
  .callout-block { padding: 24px; font-size: 1rem; }
  .benefit-item { padding: 20px 16px; }
  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}