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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: #1a1a1a;
  background: #fff;
  line-height: 1.6;
}

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

/* ===== VARIABLES ===== */
:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-light: #eff6ff;
  --blue-mid: #dbeafe;
  --dark: #0f172a;
  --gray: #64748b;
  --light: #f8faff;
  --border: #e2e8f0;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s, transform 0.2s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid rgba(255,255,255,0.6);
  transition: border-color 0.2s, background 0.2s;
}
.btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,0.15); }

/* ===== SECTION SHARED ===== */
.section-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section-label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 10px;
}
.section-inner > h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
}
.section-sub {
  color: var(--gray);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s;
  padding: 20px 0;
}
#navbar.scrolled {
  background: #fff;
  box-shadow: 0 2px 12px rgba(37,99,235,0.08);
  padding: 14px 0;
}
#navbar.scrolled .logo { color: var(--dark); }
#navbar.scrolled .nav-links a { color: var(--dark); }
#navbar.scrolled .nav-links a:hover { color: var(--blue); }

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}
.logo span { color: #93c5fd; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-links a:hover { color: #fff; }
.nav-cta {
  background: #fff !important;
  color: var(--blue) !important;
  padding: 10px 22px;
  border-radius: 6px;
  font-weight: 700 !important;
}
.nav-cta:hover { background: var(--blue-mid) !important; }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 50%, #2563eb 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('https://images.unsplash.com/photo-1556909114-f6e7ad7d3136?w=1600&q=80') center/cover no-repeat;
  opacity: 0.12;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(30,58,138,0.75) 50%, rgba(30,58,138,0.4));
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  padding-top: 80px;
}
.hero-eyebrow {
  color: #93c5fd;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero-content h1 span { color: #93c5fd; }
.hero-sub {
  color: rgba(255,255,255,0.8);
  font-size: 1.15rem;
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== STATS ===== */
.stats {
  background: var(--blue);
  padding: 48px 0;
}
.stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-num {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
}
.stat-label {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ===== SERVICES ===== */
.services {
  padding: 100px 0;
  background: var(--light);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px 28px;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(37,99,235,0.1);
  border-color: #bfdbfe;
}
.service-icon { font-size: 2rem; margin-bottom: 16px; }
.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--dark);
}
.service-card p { color: var(--gray); font-size: 0.95rem; }

/* ===== WHY US ===== */
.why-us {
  padding: 100px 0;
  background: #fff;
}
.why-us-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.why-us-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
}
.why-us-text > p {
  color: var(--gray);
  margin-bottom: 28px;
  font-size: 1.05rem;
}
.why-list { margin-bottom: 36px; }
.why-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--dark);
}
.check {
  width: 24px;
  height: 24px;
  background: var(--blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}
.image-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #bfdbfe, #dbeafe);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  font-size: 0.95rem;
  font-weight: 500;
}

/* ===== PROJECTS ===== */
.projects {
  padding: 100px 0;
  background: var(--light);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(37,99,235,0.1);
}
.placeholder-img {
  height: 200px;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  font-weight: 500;
}
.project-info { padding: 20px; }
.project-info h4 {
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--dark);
}
.project-info p { color: var(--gray); font-size: 0.9rem; }

/* ===== TESTIMONIALS ===== */
.testimonials {
  padding: 100px 0;
  background: var(--blue-light);
}
.testimonials .section-label { color: var(--blue); }
.testimonials > .section-inner > h2 { color: var(--dark); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: #fff;
  border: 1px solid var(--blue-mid);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 4px 16px rgba(37,99,235,0.06);
}
.stars { color: #f59e0b; font-size: 1.1rem; margin-bottom: 14px; }
.testimonial-card p { color: var(--gray); font-size: 0.95rem; line-height: 1.7; margin-bottom: 16px; }
.reviewer { color: var(--blue); font-size: 0.85rem; font-weight: 600; }

/* ===== CONTACT ===== */
.contact {
  padding: 100px 0;
  background: #fff;
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.contact-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 14px;
}
.contact-text > p { color: var(--gray); margin-bottom: 28px; }
.contact-details { display: flex; flex-direction: column; gap: 12px; }
.contact-item { color: var(--dark); font-size: 0.95rem; }

.contact-form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--dark);
  background: #fff;
  transition: border-color 0.2s;
  outline: none;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { border-color: var(--blue); }
.contact-form textarea { resize: vertical; }
.contact-form .btn-primary { width: 100%; font-size: 1rem; padding: 15px; }

/* ===== FOOTER ===== */
footer {
  background: var(--dark);
  padding: 40px 0;
  text-align: center;
}
.footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
footer .logo { font-size: 1.5rem; margin-bottom: 10px; }
footer p { color: rgba(255,255,255,0.4); font-size: 0.9rem; }
.footer-copy { margin-top: 16px; font-size: 0.8rem !important; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-us-inner { grid-template-columns: 1fr; }
  .why-us-image { display: none; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-secondary { text-align: center; }
}