/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-light: #dbeafe;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-50: #eff6ff;
  --green: #059669;
  --green-dark: #047857;
  --green-light: #d1fae5;
  --green-50: #ecfdf5;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ── Typography ── */
h1, h2, h3, h4, h5 { color: var(--gray-900); line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ── Header ── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.header.scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 32px;
}

.logo { text-decoration: none; display: flex; align-items: center; }
.logo-img { height: 32px; width: auto; display: block; }
.logo-img-footer { height: 28px; width: auto; display: block; margin-bottom: 12px; }

.nav-links {
  list-style: none; display: flex; align-items: center; gap: 2px;
  flex-wrap: nowrap;
}
.nav-links > li { position: relative; }
.nav-links > li > a {
  text-decoration: none; color: var(--gray-600); font-size: 0.9rem; font-weight: 500;
  padding: 8px 14px; border-radius: var(--radius); transition: all 0.15s;
  display: flex; align-items: center; gap: 4px;
}
.nav-links > li > a:hover,
.nav-links > li > a.active { color: var(--blue); background: var(--blue-50); }

.nav-links > li > a .chevron {
  width: 12px; height: 12px; transition: transform 0.2s;
}

/* Dropdown — hidden by HTML hidden attribute, shown by JS */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  padding: 8px;
  z-index: 100;
}
.dropdown-menu[hidden] { display: none !important; }
.dropdown-menu::before {
  content: ''; position: absolute; top: -8px; left: 0; right: 0; height: 8px;
}

.dropdown-menu a {
  display: block; padding: 10px 14px; color: var(--gray-700); font-size: 0.88rem;
  font-weight: 500; border-radius: var(--radius); transition: all 0.1s;
  text-decoration: none;
}
.dropdown-menu a:hover { background: var(--blue-50); color: var(--blue); }

.nav-cta {
  padding: 9px 20px; background: var(--blue); color: var(--white) !important;
  border-radius: var(--radius); font-weight: 600; font-size: 0.88rem;
  transition: background 0.15s;
}
.nav-cta:hover { background: var(--blue-dark); color: var(--white) !important; }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--gray-800);
  margin: 5px 0; border-radius: 1px; transition: 0.2s;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--radius); font-size: 0.93rem; font-weight: 600;
  text-decoration: none; cursor: pointer; transition: all 0.15s; border: none;
  font-family: inherit;
}
.btn-primary {
  background: var(--blue); color: var(--white);
  box-shadow: 0 1px 3px rgba(37,99,235,0.3);
}
.btn-primary:hover { background: var(--blue-dark); box-shadow: 0 4px 12px rgba(37,99,235,0.3); transform: translateY(-1px); }

.btn-outline {
  background: var(--white); color: var(--gray-700);
  border: 1.5px solid var(--gray-300);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }

.btn-white {
  background: var(--white); color: var(--blue);
  box-shadow: var(--shadow);
}
.btn-white:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }

.btn-lg { padding: 16px 36px; font-size: 1rem; border-radius: var(--radius-lg); }

/* ── Hero (Homepage) ── */
.hero {
  padding: 140px 0 100px;
  background: linear-gradient(170deg, var(--blue-50) 0%, var(--white) 50%, var(--green-50) 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -200px; right: -200px;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.04) 0%, transparent 70%);
}
.hero .container { position: relative; }
.hero h1 { max-width: 680px; }
.hero-sub {
  margin-top: 20px; font-size: 1.15rem; color: var(--gray-500);
  max-width: 560px; line-height: 1.75;
}
.hero-sub strong { color: var(--gray-700); font-weight: 600; }
.hero-actions { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ── Page Hero (Sub-pages) ── */
.page-hero {
  padding: 120px 0 60px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}
.page-hero h1 { max-width: 640px; margin-bottom: 16px; }
.page-hero p { max-width: 560px; color: var(--gray-500); font-size: 1.1rem; }

/* Breadcrumb */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 20px; font-size: 0.85rem;
}
.breadcrumb a { color: var(--gray-400); text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb .sep { color: var(--gray-300); }
.breadcrumb .current { color: var(--gray-600); font-weight: 500; }

/* ── Sections ── */
section { padding: 88px 0; }

.section-label {
  font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--blue); margin-bottom: 12px;
}
.section-heading { margin-bottom: 16px; }
.section-sub {
  color: var(--gray-500); max-width: 560px; font-size: 1.05rem; line-height: 1.7;
}
.section-header { margin-bottom: 56px; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto; }

/* ── Trust Strip ── */
.trust-strip {
  padding: 56px 0; border-top: 1px solid var(--gray-100); border-bottom: 1px solid var(--gray-100);
}
.trust-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center;
}
.trust-item .trust-num {
  font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em;
  color: var(--gray-900);
}
.trust-item .trust-label {
  font-size: 0.85rem; color: var(--gray-500); margin-top: 4px; font-weight: 500;
}

/* ── Cards ── */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px;
}
.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  padding: 32px; transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--gray-300); }

.card-icon {
  width: 44px; height: 44px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.25rem;
}
.card-icon.blue { background: var(--blue-50); color: var(--blue); }
.card-icon.green { background: var(--green-50); color: var(--green); }

.card h3 { margin-bottom: 10px; }
.card p { color: var(--gray-500); font-size: 0.93rem; line-height: 1.7; }
.card .card-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 16px; font-size: 0.88rem; font-weight: 600; color: var(--blue);
}
.card .card-link:hover { gap: 10px; }

/* ── Two-Column Layout ── */
.two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }

.two-col-text .section-label { margin-bottom: 8px; }
.two-col-text h2 { margin-bottom: 16px; }
.two-col-text p { color: var(--gray-500); line-height: 1.75; }
.two-col-text ul {
  list-style: none; margin-top: 20px;
}
.two-col-text li {
  padding: 8px 0; padding-left: 24px; position: relative;
  color: var(--gray-600); font-size: 0.95rem;
}
.two-col-text li::before {
  content: ''; position: absolute; left: 0; top: 16px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--green);
}

.two-col-visual {
  background: var(--gray-50); border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200); overflow: hidden;
}
.two-col-visual img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}

/* ── Stats Strip (dark) ── */
.stats-section {
  background: var(--gray-900); padding: 64px 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center;
}
.stat-num {
  font-size: 2.75rem; font-weight: 800; letter-spacing: -0.03em;
  background: linear-gradient(135deg, #60a5fa, #34d399);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { color: var(--gray-400); font-size: 0.88rem; margin-top: 4px; }

/* ── CTA Banner ── */
.cta-banner {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  padding: 72px 0; text-align: center;
}
.cta-banner h2 { color: var(--white); margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,0.8); max-width: 480px; margin: 0 auto 32px; font-size: 1.05rem; }

/* ── Feature List ── */
.feature-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px;
}
.feature-item { padding: 24px 0; }
.feature-item h4 { margin-bottom: 6px; }
.feature-item p { color: var(--gray-500); font-size: 0.93rem; }

/* ── Team Grid ── */
.team-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px;
}
.team-card { text-align: center; }
.team-avatar {
  width: 120px; height: 120px; border-radius: 50%; margin: 0 auto 16px;
  background: var(--gray-100); border: 3px solid var(--white); box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: var(--gray-400); font-weight: 600;
}
.team-card h4 { margin-bottom: 2px; }
.team-card p { color: var(--gray-500); font-size: 0.85rem; }

/* ── Process Steps ── */
.process-steps {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px;
  counter-reset: step;
}
.process-step { counter-increment: step; padding: 32px; position: relative; }
.process-step::before {
  content: counter(step, decimal-leading-zero);
  font-size: 3rem; font-weight: 800; line-height: 1; letter-spacing: -0.03em;
  color: var(--gray-100); margin-bottom: 16px; display: block;
}
.process-step h3 { margin-bottom: 8px; }
.process-step p { color: var(--gray-500); font-size: 0.93rem; line-height: 1.7; }

/* ── Contact Form ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }

.contact-form { max-width: 100%; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-700);
  margin-bottom: 6px;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--gray-200);
  border-radius: var(--radius); font-size: 0.93rem; font-family: inherit; color: var(--gray-800);
  background: var(--white); transition: border-color 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}
.form-group textarea { resize: vertical; }

.contact-info h3 { margin-bottom: 20px; }
.contact-detail { margin-bottom: 24px; }
.contact-detail h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--gray-400); margin-bottom: 4px; font-weight: 600; }
.contact-detail p { color: var(--gray-700); }

/* ── Expertise list ── */
.expertise-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px;
}
.expertise-col h3 {
  font-size: 1rem; font-weight: 700; color: var(--gray-900); margin-bottom: 16px;
  padding-bottom: 12px; border-bottom: 2px solid var(--green-light);
}
.expertise-col ul { list-style: none; }
.expertise-col li {
  padding: 10px 0; color: var(--gray-600); font-size: 0.93rem;
  border-bottom: 1px solid var(--gray-100);
  padding-left: 20px; position: relative;
}
.expertise-col li::before {
  content: ''; position: absolute; left: 0; top: 50%;
  width: 6px; height: 6px; border-radius: 50%; background: var(--green);
  transform: translateY(-50%);
}

/* ── Case Studies ── */
.case-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px;
}
.case-card {
  border: 1px solid var(--gray-200); border-radius: var(--radius-lg);
  overflow: hidden; transition: box-shadow 0.2s, transform 0.2s;
}
.case-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.case-thumb {
  height: 200px; background: var(--gray-100); overflow: hidden;
}
.case-thumb img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.case-body { padding: 24px; }
.case-tag {
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--blue); margin-bottom: 8px;
}
.case-body h3 { margin-bottom: 8px; }
.case-body p { color: var(--gray-500); font-size: 0.9rem; }

/* ── Footer ── */
.footer { background: var(--gray-900); color: var(--gray-400); padding: 72px 0 32px; }

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .logo-text { color: var(--white); font-size: 1.4rem; }
.footer-brand p { margin-top: 12px; font-size: 0.9rem; line-height: 1.7; max-width: 280px; }

.footer-col h4 {
  color: var(--gray-300); font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: 0.08em; margin-bottom: 16px; font-weight: 700;
}
.footer-col a {
  display: block; padding: 5px 0; color: var(--gray-400); font-size: 0.88rem;
  text-decoration: none; transition: color 0.15s;
}
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  padding-top: 24px; font-size: 0.82rem;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-bottom a { color: var(--gray-400); text-decoration: none; }
.footer-bottom a:hover { color: var(--white); }

/* ── Utility ── */
.bg-gray { background: var(--gray-50); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--white); flex-direction: column; padding: 16px 24px 24px;
    gap: 4px; box-shadow: var(--shadow-lg); border-top: 1px solid var(--gray-200);
  }
  .nav-links.open { display: flex; }
  .nav-links > li > a { padding: 12px 0; }
  .dropdown-menu {
    position: static; box-shadow: none; border: none; padding: 0 0 0 16px;
    min-width: auto;
  }
  .dropdown-menu::before { display: none; }

  .hero { padding: 120px 0 64px; }
  .page-hero { padding: 100px 0 48px; }

  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .two-col.reverse { direction: ltr; }

  .trust-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .form-row { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .trust-grid, .stats-grid { grid-template-columns: 1fr; }
  .card-grid, .card-grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}