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

:root {
  --cyan: #00d4ff;
  --blue: #0080ff;
  --dark: #0a0e17;
  --dark-alt: #111827;
  --gray-900: #1a1f2e;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, var(--cyan), var(--blue));
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: 'Tajawal', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.7;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(0, 128, 255, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(0, 128, 255, 0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
}

/* ---------- Header ---------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.header.scrolled {
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  gap: 36px;
}

.nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s;
}

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

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

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--dark);
  background-image: url('https://images.unsplash.com/photo-1557597774-9d273605dfa9?w=1600&h=900&fit=crop');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 14, 23, 0.92) 0%,
    rgba(10, 14, 23, 0.75) 50%,
    rgba(0, 80, 160, 0.4) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 120px 0 80px;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 24px;
}

.hero-content > p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 560px;
}

.hero-dahua {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50px;
  padding: 8px 24px 8px 12px;
  margin-bottom: 36px;
  backdrop-filter: blur(8px);
}

.hero-dahua-logo {
  height: 22px;
  width: auto;
  filter: brightness(0) invert(1);
}

.hero-dahua span {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
}

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

/* ---------- Services ---------- */

.services {
  padding: 120px 0;
  background: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 520px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  padding: 36px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
  background: var(--white);
  transition: all 0.35s ease;
}

.service-card:hover {
  border-color: transparent;
  box-shadow: 0 8px 40px rgba(0, 128, 255, 0.08);
  transform: translateY(-4px);
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 128, 255, 0.1));
  margin-bottom: 20px;
}

.service-icon svg {
  width: 24px;
  height: 24px;
  color: var(--blue);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.75;
}

/* ---------- About ---------- */

.about {
  padding: 120px 0;
  background: var(--gray-100);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 24px;
}

.about-text p {
  font-size: 1rem;
  color: var(--gray-500);
  line-height: 1.85;
  margin-bottom: 16px;
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius);
}

/* ---------- Partner ---------- */

.partner {
  padding: 120px 0;
  background: var(--dark);
  text-align: center;
}

.partner-inner {
  max-width: 700px;
  margin: 0 auto;
}

.partner-badge {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--gradient);
  color: var(--white);
  margin-bottom: 32px;
}

.partner-logo {
  max-width: 260px;
  margin: 0 auto 32px;
  filter: brightness(0) invert(1);
}

.partner h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.partner p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.85;
  margin-bottom: 40px;
}

.partner-features {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.partner-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
}

.partner-feature svg {
  width: 18px;
  height: 18px;
  color: var(--cyan);
}

/* ---------- Contact ---------- */

.contact {
  padding: 120px 0;
  background: var(--white);
}

.contact-info {
  max-width: 600px;
}

.contact-info h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 1rem;
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-link {
  transition: opacity 0.3s;
  border-radius: var(--radius-sm);
  padding: 4px 0;
}

.contact-link:hover {
  opacity: 0.75;
}

.contact-item svg {
  width: 22px;
  height: 22px;
  color: var(--blue);
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 2px;
}

.contact-item span {
  font-size: 0.95rem;
  color: var(--gray-500);
}

/* ---------- Footer ---------- */

.footer {
  padding: 48px 0;
  background: var(--dark-alt);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  width: 100%;
  text-align: center;
}

.footer-bottom span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.3);
}

/* ---------- Animations ---------- */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 14, 23, 0.97);
    backdrop-filter: blur(12px);
    padding: 20px 24px;
    gap: 16px;
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-content {
    padding: 140px 0 60px;
  }

  .services {
    padding: 80px 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .about {
    padding: 80px 0;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    order: -1;
  }

  .about-image img {
    height: 300px;
  }

  .partner {
    padding: 80px 0;
  }

  .partner-features {
    gap: 20px;
  }

  .contact {
    padding: 80px 0;
  }

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

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

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }
}