/* ===== DH_Technology Design System ===== */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg: #0F172A;
  --bg-light: #131c33;
  --card: #1E293B;
  --card-hover: #263548;
  --primary: #3B82F6;
  --accent: #8B5CF6;
  --text: #F8FAFC;
  --text-secondary: #CBD5E1;
  --gradient: linear-gradient(135deg, var(--primary), var(--accent));
  --glass: rgba(30, 41, 59, 0.6);
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --radius: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 { font-family: 'Poppins', sans-serif; font-weight: 700; line-height: 1.2; }

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Section */
.section { padding: 100px 0; position: relative; }
.section-title {
  text-align: center;
  margin-bottom: 60px;
}
.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 12px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-title p { color: var(--text-secondary); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 16px 0;
  background: transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
}
.nav-logo-img {
  height: 45px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(59,130,246,0.3));
  transition: var(--transition);
}
.nav-logo-img:hover { filter: drop-shadow(0 0 14px rgba(59,130,246,0.5)); }
.footer-logo-img {
  height: 60px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(59,130,246,0.3));
}
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; }
.hamburger span { width: 25px; height: 2px; background: var(--text); transition: var(--transition); border-radius: 2px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(59,130,246,0.12) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(139,92,246,0.1) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}
@keyframes heroGlow {
  0% { transform: translate(0,0) scale(1); }
  100% { transform: translate(-3%,3%) scale(1.05); }
}

.hero .container { display: flex; align-items: center; gap: 60px; position: relative; z-index: 1; }
.hero-content { flex: 1; }
.hero-image { flex: 0 0 350px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--glass);
  border: 1px solid rgba(59,130,246,0.3);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}
.hero-badge .dot { width: 8px; height: 8px; background: #22c55e; border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero h1 { font-size: 3.5rem; margin-bottom: 8px; }
.hero h1 .gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .typed-wrapper { font-size: 1.5rem; color: var(--accent); margin-bottom: 16px; min-height: 40px; font-family: 'Poppins', sans-serif; font-weight: 600; }
.hero p { color: var(--text-secondary); font-size: 1.1rem; max-width: 520px; margin-bottom: 32px; }

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(59,130,246,0.5); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid rgba(248,250,252,0.2);
}
.btn-outline:hover { border-color: var(--primary); background: rgba(59,130,246,0.1); transform: translateY(-3px); }
.btn-ghost { background: rgba(139,92,246,0.15); color: var(--accent); }
.btn-ghost:hover { background: rgba(139,92,246,0.25); transform: translateY(-3px); }

.hero-img {
  width: 350px; height: 350px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(59,130,246,0.3);
  box-shadow: 0 0 60px rgba(59,130,246,0.2), 0 0 120px rgba(139,92,246,0.1);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

/* ===== ABOUT ===== */
.about .container { display: flex; align-items: center; gap: 60px; }
.about-image { flex: 0 0 350px; }
.about-img {
  width: 350px; height: 400px;
  border-radius: var(--radius);
  object-fit: cover;
  border: 2px solid rgba(59,130,246,0.2);
  box-shadow: var(--shadow);
}
.about-content { flex: 1; }
.about-content h2 { font-size: 2.2rem; margin-bottom: 20px; }
.about-content h2 .gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-content p { color: var(--text-secondary); margin-bottom: 24px; font-size: 1.05rem; }

.about-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.highlight-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  background: var(--glass);
  border-radius: 10px;
  border: 1px solid rgba(59,130,246,0.1);
  font-size: 0.95rem;
  transition: var(--transition);
}
.highlight-item:hover { border-color: var(--primary); transform: translateX(5px); }
.highlight-item i { color: var(--primary); font-size: 1.1rem; }

/* ===== SKILLS ===== */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.skill-category {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid rgba(59,130,246,0.1);
  transition: var(--transition);
}
.skill-category:hover { border-color: var(--primary); transform: translateY(-5px); box-shadow: 0 10px 40px rgba(59,130,246,0.15); }
.skill-category h3 { font-size: 1.2rem; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.skill-category h3 i { color: var(--primary); font-size: 1.3rem; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-tag {
  padding: 8px 16px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.skill-tag:hover { background: rgba(59,130,246,0.2); color: var(--text); border-color: var(--primary); }

/* ===== SERVICES ===== */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.service-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid rgba(59,130,246,0.1);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(59,130,246,0.15); border-color: rgba(59,130,246,0.3); }
.service-icon {
  width: 60px; height: 60px;
  border-radius: 14px;
  background: rgba(59,130,246,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--primary);
  margin-bottom: 20px;
  transition: var(--transition);
}
.service-card:hover .service-icon { background: var(--gradient); color: #fff; }
.service-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.service-card p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 16px; }
.service-list { display: flex; flex-direction: column; gap: 8px; }
.service-list li { color: var(--text-secondary); font-size: 0.9rem; display: flex; align-items: center; gap: 8px; }
.service-list li::before { content: '→'; color: var(--primary); font-weight: 700; }

/* ===== PROJECTS ===== */
.project-filters { display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn {
  padding: 10px 24px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid rgba(59,130,246,0.15);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
.filter-btn.active, .filter-btn:hover { background: var(--gradient); color: #fff; border-color: transparent; }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.project-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(59,130,246,0.1);
  transition: var(--transition);
}
.project-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(59,130,246,0.15); border-color: rgba(59,130,246,0.3); }
.project-thumb {
  width: 100%; height: 200px;
  background: linear-gradient(135deg, rgba(59,130,246,0.2), rgba(139,92,246,0.2));
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; color: var(--primary);
  position: relative; overflow: hidden;
}
.project-thumb::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
}
.project-card:hover .project-thumb::after { opacity: 0.15; }

.project-info { padding: 24px; }
.project-info h3 { font-size: 1.15rem; margin-bottom: 8px; }
.project-info p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 16px; }
.project-tech { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.project-tech span {
  padding: 4px 12px;
  background: rgba(139,92,246,0.15);
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--accent);
}
.project-links { display: flex; gap: 12px; }
.project-links a {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  background: rgba(59,130,246,0.1);
  color: var(--primary);
  transition: var(--transition);
}
.project-links a:hover { background: var(--primary); color: #fff; }

/* ===== STATS ===== */
.stats {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.08));
  border-top: 1px solid rgba(59,130,246,0.1);
  border-bottom: 1px solid rgba(59,130,246,0.1);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; padding: 32px 16px; }
.stat-number {
  font-family: 'Poppins', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { color: var(--text-secondary); font-size: 1rem; margin-top: 8px; }

/* ===== TESTIMONIALS ===== */
.testimonials-slider { max-width: 700px; margin: 0 auto; position: relative; overflow: hidden; }
.testimonial-track { display: flex; transition: transform 0.5s ease; }
.testimonial-card {
  min-width: 100%;
  background: var(--card);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  border: 1px solid rgba(59,130,246,0.1);
}
.testimonial-card .quote-icon { font-size: 2.5rem; color: var(--primary); opacity: 0.4; margin-bottom: 20px; }
.testimonial-card p { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; font-style: italic; }
.testimonial-author { font-weight: 600; color: var(--text); }
.testimonial-role { color: var(--text-secondary); font-size: 0.9rem; }
.slider-dots { display: flex; justify-content: center; gap: 10px; margin-top: 24px; }
.slider-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: rgba(59,130,246,0.3);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.slider-dot.active { background: var(--primary); transform: scale(1.2); }

/* ===== WHY CHOOSE ME ===== */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.why-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  border: 1px solid rgba(59,130,246,0.1);
  transition: var(--transition);
}
.why-card:hover { border-color: var(--primary); transform: translateY(-5px); }
.why-card i { font-size: 2rem; color: var(--primary); margin-bottom: 16px; display: block; }
.why-card h4 { font-size: 1rem; margin-bottom: 8px; }
.why-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== WORK PROCESS ===== */
.process-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-timeline::before {
  content: '';
  position: absolute;
  top: 40px; left: 10%; right: 10%;
  height: 2px;
  background: var(--gradient);
  opacity: 0.3;
}
.process-step { text-align: center; position: relative; }
.step-number {
  width: 70px; height: 70px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 20px;
  box-shadow: 0 4px 20px rgba(59,130,246,0.3);
}
.process-step h4 { font-size: 1.05rem; margin-bottom: 8px; }
.process-step p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== CONTACT ===== */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-bottom: 40px; }
.contact-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  border: 1px solid rgba(59,130,246,0.1);
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--primary); transform: translateY(-5px); }
.contact-card i { font-size: 2rem; color: var(--primary); margin-bottom: 16px; }
.contact-card h4 { margin-bottom: 8px; }
.contact-card p { color: var(--text-secondary); font-size: 0.95rem; }
.contact-card a { color: var(--primary); }
.contact-card a:hover { color: var(--accent); }

.contact-social { display: flex; justify-content: center; gap: 16px; margin-top: 24px; }
.social-link {
  width: 50px; height: 50px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid rgba(59,130,246,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.social-link:hover { background: var(--gradient); color: #fff; border-color: transparent; transform: translateY(-4px); }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-light);
  border-top: 1px solid rgba(59,130,246,0.1);
  padding: 60px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand p { color: var(--text-secondary); margin-top: 12px; font-size: 0.95rem; }
.footer h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-secondary); font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary); transform: translateX(4px); display: inline-block; }
.footer-bottom {
  border-top: 1px solid rgba(59,130,246,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { color: var(--text-secondary); font-size: 0.85rem; }
.footer-tech span {
  padding: 4px 12px;
  background: rgba(59,130,246,0.1);
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--primary);
  margin-left: 6px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
  .hero .container { flex-direction: column-reverse; text-align: center; }
  .hero-image { flex: none; }
  .hero h1 { font-size: 2.5rem; }
  .hero p { margin: 0 auto 32px; }
  .hero-buttons { justify-content: center; }
  .about .container { flex-direction: column; text-align: center; }
  .about-highlights { justify-items: center; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-bottom { justify-content: center; text-align: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-timeline { grid-template-columns: repeat(2, 1fr); }
  .process-timeline::before { display: none; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    padding: 40px;
    gap: 24px;
    transition: var(--transition);
    border-left: 1px solid rgba(59,130,246,0.1);
  }
  .nav-links.active { right: 0; }
  .hamburger { display: flex; }
  .hero-img { width: 250px; height: 250px; }
  .about-img { width: 280px; height: 320px; }
  .about-highlights { grid-template-columns: 1fr; }
  .skills-grid, .services-grid, .projects-grid { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .section-title h2 { font-size: 2rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero .typed-wrapper { font-size: 1.2rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .stat-number { font-size: 2.2rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}