@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ===== DESIGN TOKENS ===== */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.08);
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-ice: #93c5fd;
  --accent-cyan: #22d3ee;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient-blue: linear-gradient(135deg, #3b82f6, #22d3ee);
  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #1e1b4b 50%, #0a0e1a 100%);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 50px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 1rem 5%;
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  transition: padding var(--transition), background var(--transition);
}

.navbar.scrolled {
  padding: 0.6rem 5%;
  background: rgba(10, 14, 26, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-brand { display: flex; align-items: center; gap: 0.75rem; }
.nav-logo { height: 42px; width: auto; transition: transform var(--transition); }
.nav-logo:hover { transform: scale(1.05); }

.nav-brand-text {
  font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em;
  background: var(--gradient-blue); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}

.nav-links { display: flex; align-items: center; gap: 2rem; }

.nav-links a {
  font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
  position: relative; transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--gradient-blue); border-radius: 2px; transition: width var(--transition);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  padding: 0.55rem 1.4rem; border-radius: var(--radius-pill);
  background: var(--gradient-blue); color: #fff;
  font-size: 0.85rem; font-weight: 600; border: none; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 25px var(--accent-glow); }

/* Hamburger */
.menu-toggle {
  display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; z-index: 1001;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-primary);
  border-radius: 2px; margin: 6px 0; transition: all var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ===== SECTIONS ===== */
section { padding: 6rem 5%; }
.container { max-width: 1200px; margin: 0 auto; }

.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--accent-blue); margin-bottom: 0.75rem;
  padding: 0.3rem 0.8rem; border-radius: var(--radius-pill);
  background: rgba(59, 130, 246, 0.1); border: 1px solid rgba(59, 130, 246, 0.2);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -0.03em; line-height: 1.2; margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 600px; line-height: 1.7;
}

.section-header { text-align: center; margin-bottom: 4rem; }
.section-header .section-subtitle { margin: 0 auto; }

/* ===== HERO ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding-top: 80px; overflow: hidden;
  background: var(--gradient-hero);
}

.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: url('assets/hero-bg.png') center/cover no-repeat;
  opacity: 0.25;
}

.hero-grid-overlay {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-glow {
  position: absolute; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  animation: pulseGlow 6s ease-in-out infinite;
  z-index: 0;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.15); }
}

.hero-content {
  position: relative; z-index: 1; text-align: center;
  max-width: 800px; padding: 0 1.5rem;
  animation: fadeInUp 1s ease-out;
}

.hero-logo { height: 100px; margin: 0 auto 1.5rem; filter: drop-shadow(0 0 30px var(--accent-glow)); }

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.2rem); font-weight: 900;
  letter-spacing: -0.04em; line-height: 1.1; margin-bottom: 1.5rem;
}

.hero-title .gradient-text {
  background: var(--gradient-blue);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem; color: var(--text-secondary);
  max-width: 560px; margin: 0 auto 2.5rem; line-height: 1.7;
}

.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem; border-radius: var(--radius-pill);
  background: var(--gradient-blue); color: #fff;
  font-family: 'Inter', sans-serif; font-size: 1rem; font-weight: 600;
  border: none; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px var(--accent-glow); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem; border-radius: var(--radius-pill);
  background: transparent; color: var(--text-primary);
  font-family: 'Inter', sans-serif; font-size: 1rem; font-weight: 600;
  border: 1px solid var(--border-glass); cursor: pointer;
  transition: all var(--transition);
}
.btn-outline:hover {
  border-color: var(--accent-blue); background: rgba(59, 130, 246, 0.08);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
}

.hero-stats {
  display: flex; justify-content: center; gap: 3rem;
  margin-top: 4rem; padding-top: 2.5rem;
  border-top: 1px solid var(--border-glass);
}

.stat { text-align: center; }
.stat-number {
  font-size: 2rem; font-weight: 800;
  background: var(--gradient-blue); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }

/* ===== SERVICES ===== */
.services { background: var(--bg-secondary); }

.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem;
}

.service-card {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); padding: 2.5rem 2rem;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-blue); opacity: 0; transition: opacity var(--transition);
}
.service-card:hover {
  transform: translateY(-6px); border-color: rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-glow);
}
.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 52px; height: 52px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem; font-size: 1.4rem;
}
.service-icon--blue { background: rgba(59, 130, 246, 0.12); color: var(--accent-blue); }
.service-icon--cyan { background: rgba(34, 211, 238, 0.12); color: var(--accent-cyan); }
.service-icon--purple { background: rgba(168, 85, 247, 0.12); color: #a855f7; }
.service-icon--green { background: rgba(34, 197, 94, 0.12); color: #22c55e; }

.service-card h3 {
  font-size: 1.2rem; font-weight: 700; margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.service-card p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.6; }

/* ===== PORTFOLIO ===== */
.portfolio-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 2rem;
}

.portfolio-card {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: all var(--transition); group: true;
}
.portfolio-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-glow);
  border-color: rgba(59, 130, 246, 0.2);
}

.portfolio-img-wrap {
  position: relative; overflow: hidden; height: 240px;
}
.portfolio-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s ease;
}
.portfolio-card:hover .portfolio-img-wrap img { transform: scale(1.05); }

.portfolio-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10, 14, 26, 0.8) 0%, transparent 60%);
}

.portfolio-body { padding: 1.5rem 2rem 2rem; }
.portfolio-tag {
  display: inline-block; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent-cyan); margin-bottom: 0.5rem;
}
.portfolio-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem; }
.portfolio-body p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }

/* ===== PROCESS ===== */
.process { background: var(--bg-secondary); }

.process-steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem;
  position: relative;
}
.process-steps::before {
  content: ''; position: absolute; top: 36px; left: 10%; right: 10%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), var(--accent-cyan), transparent);
  opacity: 0.3;
}

.process-step { text-align: center; position: relative; }

.step-number {
  width: 72px; height: 72px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.5rem; font-size: 1.5rem; font-weight: 800;
  background: rgba(59, 130, 246, 0.1); border: 2px solid rgba(59, 130, 246, 0.3);
  color: var(--accent-blue); position: relative; z-index: 1;
  transition: all var(--transition);
}
.process-step:hover .step-number {
  background: var(--accent-blue); color: #fff;
  box-shadow: 0 0 30px var(--accent-glow);
}
.process-step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.process-step p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }

.about-content .section-subtitle { max-width: none; margin-bottom: 2rem; }

.about-features { display: flex; flex-direction: column; gap: 1.25rem; }
.about-feature {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1rem 1.25rem; border-radius: var(--radius-md);
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  transition: all var(--transition);
}
.about-feature:hover { border-color: rgba(59, 130, 246, 0.2); }

.about-feature-icon {
  width: 40px; height: 40px; min-width: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); font-size: 1.1rem;
}
.about-feature h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.2rem; }
.about-feature p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0; }

.about-visual {
  position: relative; display: flex; justify-content: center; align-items: center;
}
.about-card-stack { position: relative; width: 100%; max-width: 420px; }
.about-card-bg {
  position: absolute; inset: -20px; border-radius: var(--radius-lg);
  background: var(--gradient-blue); opacity: 0.08;
  transform: rotate(3deg);
}
.about-card-main {
  position: relative; border-radius: var(--radius-lg);
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  padding: 3rem 2.5rem; text-align: center;
}
.about-logo { height: 80px; margin: 0 auto 1.5rem; filter: drop-shadow(0 0 20px var(--accent-glow)); }
.about-card-main h3 {
  font-size: 1.3rem; font-weight: 800; margin-bottom: 0.5rem;
  background: var(--gradient-blue); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.about-card-main p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }

/* ===== CONTACT ===== */
.contact { background: var(--bg-secondary); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }

.contact-info-list { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 2rem; }
.contact-item {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1.25rem; border-radius: var(--radius-md);
  background: var(--bg-glass); border: 1px solid var(--border-glass);
}
.contact-icon {
  width: 44px; height: 44px; min-width: 44px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); font-size: 1.2rem;
}
.contact-item h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 0.2rem; }
.contact-item p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }

.contact-form {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); padding: 2.5rem;
}
.contact-form h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.5rem; }
.contact-form > p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 2rem; }

.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-secondary);
  margin-bottom: 0.4rem; letter-spacing: 0.03em;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 0.8rem 1rem; border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border-glass);
  color: var(--text-primary); font-family: 'Inter', sans-serif; font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select option { background: var(--bg-secondary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-submit {
  width: 100%; padding: 0.9rem; border-radius: var(--radius-pill);
  background: var(--gradient-blue); color: #fff;
  font-family: 'Inter', sans-serif; font-size: 1rem; font-weight: 600;
  border: none; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 6px 25px var(--accent-glow); }

/* ===== FOOTER ===== */
.footer {
  padding: 3rem 5% 2rem; border-top: 1px solid var(--border-glass);
  background: rgba(10, 14, 26, 0.9);
}
.footer-content {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer-brand { display: flex; align-items: center; gap: 0.6rem; }
.footer-logo { height: 32px; }
.footer-brand span { font-size: 0.9rem; font-weight: 600; color: var(--text-secondary); }
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background: rgba(10, 14, 26, 0.98); backdrop-filter: blur(20px);
    flex-direction: column; justify-content: center; align-items: center;
    gap: 2rem; z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.3rem; }
  .nav-links .nav-cta { font-size: 1rem; padding: 0.8rem 2rem; }

  section { padding: 4rem 5%; }
  .hero { min-height: 100svh; }
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; max-width: 300px; justify-content: center; }

  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 2.5rem; }

  .section-header { margin-bottom: 3rem; }
  .form-row { grid-template-columns: 1fr; }

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