:root {
  --di-dark: #0f172a;
  --di-dark-light: #1e293b;
  --di-blue: #2563eb;
  --di-blue-dark: #1d4ed8;
  --di-orange: #f97316;
  --di-orange-dark: #ea580c;
  --di-gray: #64748b;
  --di-gray-light: #94a3b8;
  --di-light: #f8fafc;
  --di-white: #ffffff;
  --di-border: #e2e8f0;
  --di-gradient: linear-gradient(135deg, var(--di-blue), var(--di-orange));
  --di-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --di-shadow-lg: 0 8px 40px rgba(15, 23, 42, 0.12);
  --di-radius: 12px;
  --di-transition: 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--di-dark);
  line-height: 1.7;
  background: var(--di-white);
}

a { color: var(--di-blue); text-decoration: none; transition: color var(--di-transition); }
a:hover { color: var(--di-orange); }

img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── HEADER ── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--di-border);
  transition: box-shadow var(--di-transition);
}

.header.scrolled { box-shadow: var(--di-shadow); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--di-dark);
}

.logo img { width: 40px; height: 40px; border-radius: 8px; }

.logo span { background: var(--di-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav { display: flex; align-items: center; gap: 32px; }

.nav a {
  color: var(--di-dark);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--di-gradient);
  transition: width var(--di-transition);
}

.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav a:hover { color: var(--di-blue); }

.nav-cta {
  background: var(--di-gradient);
  color: var(--di-white) !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta::after { display: none !important; }
.nav-cta:hover { opacity: 0.9; color: var(--di-white) !important; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.burger span {
  width: 24px; height: 2px;
  background: var(--di-dark);
  transition: var(--di-transition);
}

/* ── HERO ── */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #f0f4ff 0%, #fff7ed 100%);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: var(--di-blue);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--di-dark);
}

.hero h1 em {
  font-style: normal;
  background: var(--di-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--di-gray);
  margin-bottom: 32px;
  max-width: 500px;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--di-gradient);
  color: var(--di-white);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform var(--di-transition), box-shadow var(--di-transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
  color: var(--di-white);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--di-white);
  color: var(--di-dark);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--di-border);
  cursor: pointer;
  transition: var(--di-transition);
}

.btn-secondary:hover {
  border-color: var(--di-blue);
  color: var(--di-blue);
}

.hero-image {
  border-radius: var(--di-radius);
  box-shadow: var(--di-shadow-lg);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--di-border);
}

.hero-stat strong {
  display: block;
  font-size: 1.75rem;
  background: var(--di-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat span { font-size: 0.85rem; color: var(--di-gray); }

/* ── SECTION ── */
.section { padding: 80px 0; }
.section-alt { background: var(--di-light); }

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
}

.section-header .label {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: var(--di-blue);
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.25rem;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-header p { color: var(--di-gray); font-size: 1.05rem; }

/* ── SERVICES ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--di-white);
  border: 1px solid var(--di-border);
  border-radius: var(--di-radius);
  padding: 32px;
  transition: transform var(--di-transition), box-shadow var(--di-transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--di-shadow-lg);
}

.service-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(249, 115, 22, 0.1));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.service-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.service-card p { color: var(--di-gray); font-size: 0.95rem; }

/* ── WHY US ── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.why-card { text-align: center; padding: 24px; }

.why-number {
  width: 48px; height: 48px;
  background: var(--di-gradient);
  color: var(--di-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 16px;
}

.why-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.why-card p { color: var(--di-gray); font-size: 0.95rem; }

/* ── CASE STUDIES ── */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--di-white);
  border: 1px solid var(--di-border);
  border-radius: var(--di-radius);
  overflow: hidden;
  transition: transform var(--di-transition), box-shadow var(--di-transition);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--di-shadow-lg);
}

.case-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, #e0e7ff, #fed7aa);
}

.case-body { padding: 24px; }
.case-body .tag {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: var(--di-blue);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.case-body p { color: var(--di-gray); font-size: 0.9rem; margin-bottom: 16px; }

.case-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--di-blue);
}

/* ── TESTIMONIAL ── */
.testimonial {
  padding: 80px 0;
  background: var(--di-dark);
  color: var(--di-white);
}

.testimonial-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.testimonial blockquote {
  font-size: 1.35rem;
  line-height: 1.6;
  font-style: italic;
  margin-bottom: 24px;
  opacity: 0.95;
}

.testimonial cite {
  font-style: normal;
  font-weight: 600;
}

.testimonial cite span {
  display: block;
  color: var(--di-gray-light);
  font-weight: 400;
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ── PROCESS ── */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  text-align: center;
  padding: 24px;
  position: relative;
}

.process-step::after {
  content: '→';
  position: absolute;
  right: -16px; top: 50%;
  transform: translateY(-50%);
  color: var(--di-gray-light);
  font-size: 1.5rem;
}

.process-step:last-child::after { display: none; }

.step-num {
  width: 40px; height: 40px;
  background: var(--di-gradient);
  color: var(--di-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin: 0 auto 12px;
}

.process-step h3 { font-size: 1rem; margin-bottom: 6px; }
.process-step p { color: var(--di-gray); font-size: 0.85rem; }

/* ── CTA ── */
.cta {
  padding: 80px 0;
  background: var(--di-gradient);
  text-align: center;
  color: var(--di-white);
}

.cta h2 { font-size: 2.25rem; margin-bottom: 16px; }
.cta p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--di-white);
  color: var(--di-blue);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform var(--di-transition);
}

.btn-white:hover { transform: translateY(-2px); color: var(--di-blue); }

/* ── CONTACT FORM ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h2 { font-size: 2rem; margin-bottom: 16px; }
.contact-info > p { color: var(--di-gray); margin-bottom: 32px; }

.contact-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(249, 115, 22, 0.1));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-detail strong { display: block; font-size: 0.95rem; }
.contact-detail span { color: var(--di-gray); font-size: 0.9rem; }

.contact-form {
  background: var(--di-white);
  border: 1px solid var(--di-border);
  border-radius: var(--di-radius);
  padding: 32px;
  box-shadow: var(--di-shadow);
}

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--di-border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--di-transition);
  background: var(--di-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--di-blue);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-submit {
  width: 100%;
  background: var(--di-gradient);
  color: var(--di-white);
  padding: 14px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: transform var(--di-transition);
}

.form-submit:hover { transform: translateY(-1px); }

/* ── ABOUT PAGE ── */
.about-hero {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, #f0f4ff 0%, #fff7ed 100%);
  text-align: center;
}

.about-hero h1 { font-size: 2.75rem; margin-bottom: 16px; }
.about-hero p { color: var(--di-gray); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h2 { font-size: 2rem; margin-bottom: 16px; }
.about-text p { color: var(--di-gray); margin-bottom: 16px; }

.about-image {
  border-radius: var(--di-radius);
  box-shadow: var(--di-shadow);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--di-white);
  border: 1px solid var(--di-border);
  border-radius: var(--di-radius);
  transition: transform var(--di-transition);
}

.value-card:hover { transform: translateY(-4px); box-shadow: var(--di-shadow); }

.value-icon { font-size: 2rem; margin-bottom: 12px; }
.value-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.value-card p { color: var(--di-gray); font-size: 0.9rem; }

/* ── FOUNDER ── */
.founder-section { padding: 60px 0; }

.founder-card {
  display: flex;
  align-items: center;
  gap: 40px;
  background: var(--di-white);
  border: 1px solid var(--di-border);
  border-radius: var(--di-radius);
  padding: 40px;
  box-shadow: var(--di-shadow);
  max-width: 800px;
  margin: 0 auto;
}

.founder-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--di-light);
  box-shadow: var(--di-shadow);
  flex-shrink: 0;
}

.founder-info h3 { font-size: 1.4rem; margin-bottom: 4px; }
.founder-info .role { color: var(--di-blue); font-weight: 600; margin-bottom: 12px; }
.founder-info p { color: var(--di-gray); font-size: 0.95rem; margin-bottom: 12px; }

.founder-contact { display: flex; gap: 16px; flex-wrap: wrap; }

.founder-contact a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--di-gray);
}

.founder-contact a:hover { color: var(--di-blue); }

/* ── FOOTER ── */
.footer {
  background: var(--di-dark);
  color: var(--di-white);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--di-gray-light);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.6;
}

.footer h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--di-white);
}

.footer ul { list-style: none; }

.footer li { margin-bottom: 10px; }

.footer li a {
  color: var(--di-gray-light);
  font-size: 0.9rem;
}

.footer li a:hover { color: var(--di-orange); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--di-gray-light);
}

.footer-socials { display: flex; gap: 16px; }

.footer-socials a {
  color: var(--di-gray-light);
  font-size: 1.1rem;
}

.footer-socials a:hover { color: var(--di-orange); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 2.25rem; }
  .hero-stats { gap: 24px; }
  .services-grid, .why-grid, .values-grid, .cases-grid { grid-template-columns: 1fr 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .process-step::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .founder-card { flex-direction: column; text-align: center; }
  .founder-contact { justify-content: center; }
}

@media (max-width: 600px) {
  .nav { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--di-white); flex-direction: column; justify-content: center; align-items: center; gap: 24px; z-index: 999; }
  .nav.open { display: flex; }
  .burger { display: flex; z-index: 1001; }
  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 1.75rem; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .services-grid, .why-grid, .values-grid, .cases-grid, .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.75rem; }
  .cta h2 { font-size: 1.75rem; }
}