/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --text-primary: #e5e5e5;
  --text-secondary: #8b8b8b;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --border: rgba(255, 255, 255, 0.06);
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

section {
  padding: 100px 0;
}

section:nth-child(even) {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 56px;
  text-align: center;
  font-size: 17px;
}

/* ============================================================
   Navigation
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.3s, backdrop-filter 0.3s;
  padding: 0 24px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar.scrolled {
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1120px;
  margin: auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-logo .accent {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent);
  color: white !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600 !important;
  font-size: 15px !important;
  text-decoration: none;
  transition: background 0.2s;
  display: inline-block;
}

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

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 8px;
}

/* ============================================================
   Hero Section
   ============================================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 0 24px;
}

.hero-content h1 {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero-content .subtitle {
  font-size: 19px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: white;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  display: inline-block;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  display: inline-block;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  filter: blur(60px);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
  top: 30%;
  left: 60%;
  transform: translate(-50%, -50%);
  z-index: 1;
  filter: blur(60px);
  animation: heroGlow2 12s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1.2);
  }
  100% {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes heroGlow2 {
  0% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.15);
  }
  100% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
  }
}

/* ============================================================
   About Section
   ============================================================ */
.about-text {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 48px;
  text-align: center;
}

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

.value-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
}

.value-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   Services Section
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  transition: all 0.3s;
}

.service-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 0 32px var(--accent-glow);
  transform: translateY(-2px);
}

.service-card .icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 20px;
}

.service-card .icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================================
   Process Section
   ============================================================ */
.process-timeline {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.process-step {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.step-number {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  color: var(--accent);
  position: relative;
  z-index: 2;
}

.step-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   Why Us Section
   ============================================================ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  text-align: center;
  padding: 32px 24px;
}

.why-card .icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin: 0 auto 20px;
}

.why-card .icon svg {
  width: 100%;
  height: 100%;
}

.why-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.why-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   CTA Section
   ============================================================ */
#cta {
  text-align: center;
  padding: 80px 0;
}

#cta h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

#cta p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

#cta .btn-primary {
  animation: ctaPulse 2.5s infinite;
}

@keyframes ctaPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(99, 102, 241, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
  }
}

/* ============================================================
   Footer
   ============================================================ */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-contact a {
  color: var(--accent);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
}

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

.footer-contact p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 4px;
}

.footer-brand {
  font-size: 13px;
  color: var(--text-secondary);
  font-style: italic;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ============================================================
   Scroll Reveal Animations
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-children.active > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-children.active > *:nth-child(1) {
  transition-delay: 0s;
}

.reveal-children.active > *:nth-child(2) {
  transition-delay: 0.1s;
}

.reveal-children.active > *:nth-child(3) {
  transition-delay: 0.15s;
}

.reveal-children.active > *:nth-child(4) {
  transition-delay: 0.2s;
}

/* ============================================================
   Responsive — Tablet (max-width: 1023px)
   ============================================================ */
@media (max-width: 1023px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .hero-content h1 {
    font-size: 44px;
  }
}

/* ============================================================
   Responsive — Mobile (max-width: 767px)
   ============================================================ */
@media (max-width: 767px) {
  section {
    padding: 64px 0;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 10, 11, 0.97);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    z-index: 999;
  }

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

  .nav-links a {
    font-size: 20px;
  }

  .hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
  }

  .hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
  }

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

  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }

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

  .hero-content h1 {
    font-size: 32px;
  }

  .hero-content .subtitle {
    font-size: 16px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

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

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

  .process-timeline::before {
    left: 23px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .section-title {
    font-size: 28px;
  }
}