/* ============================================
   DI Drone Landing Page — Main Styles
   ============================================ */

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

:root {
  --bg-primary: #0a0f1c;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-card-hover: #1f2a42;
  --accent-blue: #3b82f6;
  --accent-light: #60a5fa;
  --accent-amber: #f59e0b;
  --text-primary: #ffffff;
  --text-secondary: #e5e7eb;
  --text-muted: #9ca3af;
  --border-color: rgba(59, 130, 246, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.15);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease-out);
}

/* ── Typography ── */
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 1rem;
  padding: 0.35rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 100px;
  background: rgba(59, 130, 246, 0.06);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 1.5rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-amber);
  color: #000;
}

.btn-primary:hover {
  background: #e08e0b;
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.05);
}

.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.85rem;
}

.btn-full {
  width: 100%;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all 0.4s var(--ease-out);
  background: transparent;
}

.navbar--scrolled {
  background: rgba(10, 15, 28, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.6rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.3s var(--ease-out);
}

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

.nav-cta {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--accent-blue);
  border-radius: var(--radius-md);
  color: var(--accent-blue);
  transition: all 0.3s var(--ease-out);
}

.nav-cta:hover {
  background: var(--accent-blue);
  color: white;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s var(--ease-out);
}

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

.nav-toggle--active span:nth-child(2) {
  opacity: 0;
}

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

/* ─ Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/vr-drone-pilot.webp') center center / cover no-repeat;
  opacity: 0.18;
  z-index: 0;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Carousel */
.hero-carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
}

.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
  pointer-events: none;
}

.carousel-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-controls {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(10, 15, 28, 0.7);
  backdrop-filter: blur(8px);
  padding: 0.5rem 1rem;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.carousel-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s;
}

.carousel-btn:hover {
  color: var(--accent-blue);
}

.carousel-dots {
  display: flex;
  gap: 6px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  padding: 0;
}

.carousel-dot--active {
  background: var(--accent-blue);
  transform: scale(1.3);
}

/* Hero Content */
.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-video-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
}

.video-container {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-secondary);
  cursor: pointer;
}

.video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 15, 28, 0.3);
  transition: opacity 0.4s var(--ease-out);
  pointer-events: none;
}

.video-play-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.9);
  border: none;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  pointer-events: auto;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.video-play-btn:hover {
  transform: scale(1.1);
  background: var(--accent-blue);
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* ── Products Section ── */
.products {
  background: var(--bg-secondary);
  position: relative;
}

.products::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: all 0.4s var(--ease-out);
}

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

.product-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  background: var(--accent-amber);
  color: #000;
}

.badge-enterprise {
  background: var(--accent-blue);
  color: white;
}

.badge-compact {
  background: #10b981;
  color: white;
}

.product-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.product-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.product-tags span {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-light);
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.product-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.product-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* ── Features Section ── */
.features {
  background: var(--bg-primary);
  position: relative;
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all 0.4s var(--ease-out);
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--border-color);
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.app-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.app-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Specs */
.specs-section {
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid var(--border-subtle);
}

.specs-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.spec-item {
  padding: 1.5rem;
}

.spec-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-blue);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.spec-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Contact Section ── */
.contact {
  background: var(--bg-secondary);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: start;
}

.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: inherit;
  font-size: 0.92rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  transition: all 0.3s var(--ease-out);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: rgba(59, 130, 246, 0.03);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%239ca3af' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.full-width {
  grid-column: 1 / -1;
}

/* Contact Info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-block {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.info-block h4 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.info-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s var(--ease-out);
}

.info-link:hover {
  color: var(--accent-blue);
}

.info-link svg {
  flex-shrink: 0;
  stroke: var(--accent-blue);
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.3s var(--ease-out);
}

.social-link:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.08);
  transform: translateY(-2px);
}

.support-badge {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: rgba(59, 130, 246, 0.05);
  border-color: var(--border-color);
}

.support-badge .globe-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.support-badge h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: normal;
  margin-bottom: 0.3rem;
}

.support-badge p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Footer ── */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 1rem;
  max-width: 280px;
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col h5 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--accent-blue);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color 0.3s;
}

.footer-legal a:hover {
  color: var(--accent-blue);
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

/* Stagger children */
.products-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.products-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.applications-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.applications-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.applications-grid .reveal:nth-child(4) { transition-delay: 0.24s; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-carousel {
    aspect-ratio: 16 / 9;
  }

  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 15, 28, 0.97);
    backdrop-filter: blur(16px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .hero {
    min-height: auto;
    padding-top: 100px;
    padding-bottom: 2rem;
  }

  .products-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .applications-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 4rem;
  }

  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .spec-value {
    font-size: 2rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: 1.5rem;
  }

  .section-container {
    padding: 4rem 1.25rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

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

  .footer-links {
    grid-template-columns: 1fr;
  }

  .carousel-controls {
    bottom: 0.5rem;
    padding: 0.35rem 0.75rem;
  }
}

/* ── Chat Widget ── */
.chat-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
}

.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.chat-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(59, 130, 246, 0.5);
}

.chat-toggle:active {
  transform: scale(0.95);
}

.chat-icon-close {
  display: none;
}

.chat-toggle--active .chat-icon-open {
  display: none;
}

.chat-toggle--active .chat-icon-close {
  display: block;
}

/* Pulse animation for chat button */
.chat-toggle::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.3);
  animation: chatPulse 2s ease-in-out infinite;
}

@keyframes chatPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 0; }
}

.chat-toggle--active::before {
  animation: none;
  opacity: 0;
}

.chat-window {
  position: absolute;
  bottom: 76px;
  right: 0;
  width: 380px;
  height: 520px;
  background: #111827;
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(59, 130, 246, 0.1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.chat-window--open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border-bottom: 1px solid rgba(59, 130, 246, 0.15);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-header-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: #ffffff;
}

.chat-header-status {
  font-size: 0.75rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.1rem;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  display: inline-block;
}

.chat-close-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: rgba(255, 255, 255, 0.05);
  color: #94a3b8;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.chat-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
  width: 4px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: rgba(59, 130, 246, 0.3);
  border-radius: 4px;
}

.chat-message {
  display: flex;
  animation: msgSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes msgSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-message--bot {
  justify-content: flex-start;
}

.chat-message--user {
  justify-content: flex-end;
}

.chat-bubble {
  max-width: 85%;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  position: relative;
}

.chat-message--bot .chat-bubble {
  background: #1e293b;
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-bottom-left-radius: 4px;
}

.chat-message--user .chat-bubble {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  border-bottom-right-radius: 4px;
}

.chat-bubble p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: #e5e7eb;
}

.chat-message--user .chat-bubble p {
  color: #ffffff;
}

.chat-time {
  display: block;
  font-size: 0.65rem;
  color: #64748b;
  margin-top: 0.35rem;
  text-align: right;
}

.chat-message--bot .chat-time {
  text-align: left;
}

/* Typing indicator */
.chat-typing .chat-bubble {
  padding: 0.85rem 1.2rem;
}

.typing-dots {
  display: flex;
  gap: 4px;
  align-items: center;
}

.typing-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #64748b;
  animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

.chat-input-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(59, 130, 246, 0.1);
  background: #0f172a;
}

.chat-input {
  flex: 1;
  height: 42px;
  padding: 0 1rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 10px;
  background: #1e293b;
  color: #e5e7eb;
  font-size: 0.875rem;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color 0.2s ease;
}

.chat-input::placeholder {
  color: #64748b;
}

.chat-input:focus {
  border-color: #3b82f6;
}

.chat-send-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.chat-send-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.chat-send-btn:active {
  transform: scale(0.95);
}

/* Chat widget mobile responsive */
@media (max-width: 768px) {
  .chat-widget {
    bottom: 1rem;
    right: 1rem;
  }

  .chat-toggle {
    width: 52px;
    height: 52px;
  }

  .chat-window {
    position: fixed;
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 0;
    border: none;
  }

  .chat-window--open {
    transform: none;
  }
}