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

:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-light: #eff6ff;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --gray: #64748b;
  --gray-light: #f1f5f9;
  --white: #ffffff;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

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

.section { padding: 96px 0; }
.section-alt { background: var(--gray-light); }

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.section-header h2 { margin: 12px 0 16px; }
.section-header p { color: var(--gray); font-size: 1.1rem; }

/* ===== TYPOGRAPHY ===== */
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
h4 { font-size: 0.9rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray); margin-bottom: 16px; }

p { color: var(--gray); }

.accent { color: var(--blue); }

/* ===== BADGE ===== */
.badge {
  display: inline-block;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(37,99,235,0.3); }

.btn-outline {
  background: transparent;
  color: var(--dark);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }

.btn-lg { padding: 14px 30px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  border-color: var(--border);
  box-shadow: var(--shadow);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--dark);
}

.logo-icon {
  width: 36px; height: 36px;
  background: var(--blue);
  color: white;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
}

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

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--gray);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--dark); }
.nav-links .btn { color: var(--white); }
.nav-links .btn:hover { color: var(--white); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 68px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(37,99,235,0.07) 0%, transparent 70%),
              radial-gradient(ellipse 50% 50% at 20% 80%, rgba(37,99,235,0.05) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  padding: 80px 0;
  max-width: 760px;
}

.hero h1 { margin: 12px 0 24px; }

.hero-sub {
  font-size: 1.15rem;
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-num { font-size: 1.8rem; font-weight: 800; color: var(--dark); line-height: 1; }
.stat-label { font-size: 0.82rem; color: var(--gray); font-weight: 500; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* ===== SERVICES GRID ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.card p { font-size: 0.95rem; line-height: 1.65; }

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-visual {
  position: relative;
  height: 380px;
}

.about-card-stack { position: relative; height: 100%; }

.about-card {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 200px;
}

.about-card strong { font-size: 0.95rem; font-weight: 600; }
.about-card small { font-size: 0.8rem; color: var(--gray); }
.about-card-icon { font-size: 1.5rem; margin-bottom: 4px; }

.about-card-1 { top: 20px; left: 20px; }
.about-card-2 { top: 50%; left: 50%; transform: translate(-20%, -50%); }
.about-card-3 { bottom: 20px; left: 10px; }

.about-text h2 { margin: 12px 0 20px; }
.about-text p { margin-bottom: 16px; line-height: 1.75; }
.about-text .btn { margin-top: 8px; }

/* ===== WHY US ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 40px;
}

.why-item { }

.why-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--blue);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.why-item h3 { margin-bottom: 8px; }
.why-item p { font-size: 0.95rem; line-height: 1.65; }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.contact-info h2 { margin: 12px 0 20px; }
.contact-info > p { margin-bottom: 32px; line-height: 1.75; }

.contact-detail {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.contact-icon { font-size: 1.2rem; }
.contact-detail a { color: var(--blue); font-weight: 500; transition: opacity var(--transition); }
.contact-detail a:hover { opacity: 0.75; }

.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark-2);
}

input, select, textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

textarea { resize: vertical; }

.form-success {
  margin-top: 16px;
  padding: 12px 16px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  color: #166534;
  font-size: 0.9rem;
  font-weight: 500;
}

.hidden { display: none; }

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: var(--white);
  padding-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 80px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo { color: var(--white); margin-bottom: 16px; display: inline-flex; }
.footer-brand .logo-icon { background: var(--blue); }
.footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.9rem; line-height: 1.65; }

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--white); }

.footer-bottom {
  padding: 20px 0;
}
.footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.85rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { height: 260px; }
  .about-card-2 { left: 40%; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; color: var(--dark); }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }
  .footer-links { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
}