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

:root {
  --bg-dark: #11161B;
  --bg-card: #262D38;
  --bg-card-alt: #1E232C;
  --accent: #A4D65D;
  --accent-hover: #7FD13B;
  --accent-glow: rgba(164, 214, 93, 0.18);
  --text-light: #F7F5F2;
  --text-muted: #C4B9A6;
  --text-dim: #8A8D96;
  --border-subtle: rgba(255,255,255,0.08);
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

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

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ===== NAVBAR (class selector .site-nav) ===== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(17, 22, 27, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-nav .nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.5px;
}

.site-nav .nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}

.site-nav .nav-links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.site-nav .nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

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

.site-nav .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav .nav-toggle.active span:nth-child(2) { opacity: 0; }
.site-nav .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .site-nav .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(17, 22, 27, 0.97);
    flex-direction: column;
    gap: 0;
    padding: 20px 0;
    transform: translateY(-120%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--border-subtle);
  }
  .site-nav .nav-links.open { transform: translateY(0); }
  .site-nav .nav-links a { padding: 14px 28px; font-size: 1.05rem; }
  .site-nav .nav-toggle { display: block; }
}

/* ===== HERO SECTION (class selector) ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #11161B 0%, #1A2130 50%, #11161B 100%);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.6rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-text h1 .highlight { color: var(--accent); }

.hero-text .hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  letter-spacing: 0.2px;
}

.btn-primary {
  background: var(--accent);
  color: #11161B;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(164, 214, 93, 0.3);
}

.btn-outline {
  border: 2px solid var(--text-muted);
  color: var(--text-light);
  background: transparent;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.hero-card .metric-row {
  display: flex;
  gap: 40px;
  margin-bottom: 32px;
}

.hero-card .metric {
  text-align: center;
}

.hero-card .metric .number {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
  line-height: 1;
}

.hero-card .metric .label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 6px;
}

.hero-card .feature-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-card .feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.hero-card .feature-item .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .hero-section .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual { order: -1; }
}

/* ===== ABOUT SECTION (class selector) ===== */
.about-section {
  padding: 100px 0;
  background: var(--bg-card-alt);
  position: relative;
}

.about-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content .section-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 20px;
}

.about-content h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.75;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.about-stats .stat-card {
  background: var(--bg-dark);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border-subtle);
  text-align: center;
  transition: transform var(--transition);
}

.about-stats .stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.about-stats .stat-card .stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

.about-stats .stat-card .stat-label {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-top: 8px;
}

.about-visual {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border-subtle);
}

.about-visual .process-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.about-visual .process-step:last-child { border-bottom: none; }

.about-visual .step-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
}

.about-visual .step-info h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-visual .step-info p {
  font-size: 0.88rem;
  color: var(--text-dim);
}

@media (max-width: 768px) {
  .about-section .container { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
}

/* ===== SERVICES SECTION (class selector) ===== */
.services-section {
  padding: 100px 0;
  background: var(--bg-dark);
}

.services-section .section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.services-section .section-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 16px;
}

.services-section h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.25;
}

.services-section .section-desc {
  color: var(--text-dim);
  font-size: 1.02rem;
  line-height: 1.65;
}

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

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
  border: 1px solid rgba(164, 214, 93, 0.25);
}

.service-card .service-icon {
  font-size: 2.4rem;
  margin-bottom: 20px;
  display: block;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.7;
}

@media (max-width: 900px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* ===== TECH SECTION (class selector) ===== */
.tech-section {
  padding: 100px 0;
  background: var(--bg-card-alt);
}

.tech-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.tech-text .section-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 20px;
}

.tech-text h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
}

.tech-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.75;
}

.tech-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.tech-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.tech-list li .check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #11161B;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.tech-visual {
  background: var(--bg-dark);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.tech-visual .tech-badge {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  border: 1px solid var(--border-subtle);
}

.tech-visual .tech-badge .badge-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
  display: block;
}

.tech-visual .tech-badge .badge-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-light);
}

.tech-visual .tech-badge .badge-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .tech-section .container { grid-template-columns: 1fr; }
  .tech-visual { grid-template-columns: 1fr 1fr; }
}

/* ===== CONTACT SECTION (class selector) ===== */
.contact-section {
  padding: 100px 0;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.contact-section .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-section .section-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 16px;
}

.contact-section h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 14px;
}

.contact-section .contact-desc {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.contact-info-list .info-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-info-list .info-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-info-list .info-text span {
  font-size: 0.88rem;
  color: var(--text-dim);
}

.contact-form {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border-subtle);
}

.contact-form .form-group {
  margin-bottom: 18px;
}

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background: var(--bg-dark);
  color: var(--text-light);
  font-size: 0.92rem;
  font-family: inherit;
  transition: border-color var(--transition);
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact-form textarea { min-height: 120px; }

.contact-form .btn { width: 100%; justify-content: center; }

.contact-form .form-feedback {
  margin-top: 12px;
  font-size: 0.88rem;
  color: var(--accent);
  display: none;
}

.contact-form .form-feedback.show { display: block; }

@media (max-width: 768px) {
  .contact-section .container { grid-template-columns: 1fr; }
}

/* ===== FOOTER ===== */
.site-footer {
  background: #0C0E13;
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0 28px;
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.site-footer .footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.site-footer .footer-brand p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.site-footer h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.site-footer .footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer .footer-links a {
  font-size: 0.88rem;
  color: var(--text-dim);
  transition: color var(--transition);
}

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

.site-footer .footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
}

@media (max-width: 768px) {
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* ===== SCROLL REVEAL ===== */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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