/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  --blue:        #3b82f6;
  --blue-dark:   #1e40af;
  --blue-deeper: #1e3a5f;
  --navy:        #0f172a;
  --navy-deep:   #020617;
  --white:       #ffffff;
  --gray-50:     #f8fafc;
  --gray-100:    #f1f5f9;
  --gray-200:    #e2e8f0;
  --gray-400:    #94a3b8;
  --gray-500:    #64748b;
  --gray-700:    #334155;
  --gray-800:    #1e293b;
  --text:        #0f172a;
  --font:        'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --blue-light:    #93c5fd;
  --blue-light-bg: #eff6ff;
  --green-success: #86efac;
  --red-error:     #fca5a5;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--white); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { text-decoration: none; }
button, input, textarea { font-family: var(--font); }

/* ── Navigation ────────────────────────────────────────────────── */
#navbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 48px; height: 64px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow 0.3s;
}
#navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

.nav-logo {
  font-weight: 900; font-size: 14px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text);
}
.nav-logo span { color: var(--blue); }

.nav-links {
  display: flex; align-items: center; gap: 32px;
}
.nav-links > a {
  font-size: 13px; font-weight: 500; color: var(--gray-500);
  transition: color 0.2s;
}
.nav-links > a:hover { color: var(--text); }

.lang-toggle {
  display: flex; background: var(--gray-100);
  border-radius: 20px; padding: 3px; gap: 2px;
}
.lang-btn {
  padding: 4px 10px; border-radius: 16px; border: none;
  background: transparent; cursor: pointer;
  font-size: 11px; font-weight: 700; color: var(--gray-500);
  transition: all 0.2s;
}
.lang-btn.active { background: var(--blue); color: var(--white); }
.lang-btn:hover:not(.active) { color: var(--text); }

/* ── Hero ──────────────────────────────────────────────────── */
#hero {
  position: relative; overflow: hidden;
  min-height: 90vh;
  display: flex; flex-direction: column;
  justify-content: center; padding: 80px 48px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue-deeper) 60%, var(--blue-dark) 100%);
}
#hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1600&q=80') center/cover no-repeat;
  opacity: 0.25;
}

.hero-content { position: relative; z-index: 1; max-width: 700px; }

.hero-eyebrow {
  font-size: 11px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue-light); margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(38px, 6vw, 70px);
  font-weight: 900; line-height: 1.05;
  color: var(--white); text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-title-accent { color: var(--blue); }

.hero-subtitle {
  font-size: 16px; line-height: 1.75;
  color: rgba(255,255,255,0.62);
  max-width: 500px; margin-bottom: 40px;
}

.btn-primary {
  display: inline-flex; align-items: center;
  background: var(--blue); color: var(--white);
  font-size: 13px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  padding: 16px 32px; border: none; cursor: pointer;
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--blue-dark); }

.hero-stats {
  position: absolute; bottom: 48px; right: 48px; z-index: 1;
  display: flex; gap: 48px;
}
.stat { text-align: right; }
.stat-number {
  font-size: 36px; font-weight: 900;
  color: var(--white); line-height: 1;
}
.stat-plus { color: var(--blue); font-size: 22px; }
.stat-label {
  font-size: 11px; color: rgba(255,255,255,0.45);
  letter-spacing: 1px; text-transform: uppercase; margin-top: 4px;
}

/* ── Services ──────────────────────────────────────────────── */
#services {
  padding: 100px 48px;
  background: var(--white);
}

.section-label {
  font-size: 11px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue); margin-bottom: 16px;
}
.section-title {
  font-size: clamp(26px, 4vw, 46px);
  font-weight: 900; color: var(--text);
  line-height: 1.1; margin-bottom: 64px; max-width: 500px;
}

.services-list { display: flex; flex-direction: column; gap: 2px; }

.service-card {
  display: grid;
  grid-template-columns: 80px 1fr 40px;
  align-items: center; gap: 32px;
  padding: 36px 40px;
  background: var(--gray-50);
  border-left: 3px solid transparent;
  transition: background 0.2s, border-color 0.2s;
  cursor: default;
}
.service-card:hover {
  background: var(--blue-light-bg);
  border-left-color: var(--blue);
}

.service-num {
  font-size: 48px; font-weight: 900;
  color: var(--gray-200); line-height: 1;
  user-select: none;
}
.service-body h3 {
  font-size: 18px; font-weight: 800;
  color: var(--text); margin-bottom: 6px;
}
.service-body p {
  font-size: 13px; color: var(--gray-500);
  line-height: 1.65; max-width: 520px;
}
.service-arrow {
  font-size: 20px; color: var(--gray-200);
  transition: color 0.2s;
}
.service-card:hover .service-arrow { color: var(--blue); }

/* ── Dark Band ─────────────────────────────────────────────── */
#mission {
  background: var(--navy);
  padding: 80px 48px;
  display: flex; align-items: center; justify-content: center;
}

.mission-text {
  font-size: clamp(20px, 3.2vw, 38px);
  font-weight: 800; color: var(--white);
  line-height: 1.35; max-width: 800px;
  text-align: center;
}
.mission-text em {
  font-style: normal; color: var(--blue);
}

/* ── About + Values ────────────────────────────────────────── */
#about { padding: 100px 48px; background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start;
}

.about-image {
  aspect-ratio: 4 / 3;
  background:
    url('https://images.unsplash.com/photo-1521791136064-7986c2920216?w=900&q=80')
    center / cover no-repeat;
  border-top: 4px solid var(--blue);
}

.about-right p {
  font-size: 14px; color: var(--gray-500);
  line-height: 1.85; margin-bottom: 16px;
}
.about-right .section-title { margin-bottom: 20px; }

.values-block { margin-top: 40px; }
.values-list {
  list-style: none;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4px; margin-top: 16px;
}
.values-list li {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; color: var(--gray-700);
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
}
.value-dot {
  width: 6px; height: 6px;
  background: var(--blue); border-radius: 50%;
  flex-shrink: 0;
}

/* ── Contact ───────────────────────────────────────────────── */
#contact {
  padding: 100px 48px;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--navy) 100%);
}

.contact-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900; color: var(--white);
  line-height: 1.1; margin-bottom: 16px;
}
.contact-intro {
  font-size: 14px; color: rgba(255,255,255,0.6);
  line-height: 1.75; margin-bottom: 32px;
}
#contact .section-label { color: var(--blue-light); }

.contact-info { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.contact-info li { display: flex; align-items: center; gap: 14px; }
.contact-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  background: rgba(59,130,246,0.18); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.contact-info a, .contact-info span {
  font-size: 14px; color: rgba(255,255,255,0.7);
}
.contact-info a:hover { color: var(--white); }

#contact-form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.form-input, .form-textarea {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--white); padding: 14px 16px;
  font-size: 13px; outline: none;
  transition: border-color 0.2s;
}
.form-input::placeholder, .form-textarea::placeholder { color: rgba(255,255,255,0.35); }
.form-input:focus, .form-textarea:focus { border-color: var(--blue); }
.form-textarea { resize: vertical; min-height: 130px; }

.form-success {
  font-size: 13px; color: var(--green-success); font-weight: 600;
  padding: 12px 0;
}
.form-error {
  font-size: 13px; color: var(--red-error); font-weight: 600;
  padding: 12px 0;
}

/* ── Footer ────────────────────────────────────────────────── */
footer {
  background: var(--navy-deep); padding: 24px 48px;
  display: flex; justify-content: space-between; align-items: center;
}
footer p { font-size: 12px; color: var(--gray-500); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 12px; color: var(--gray-500); transition: color 0.2s; }
.footer-links a:hover { color: var(--blue-light); }

/* ── Responsive ────────────────────────────────────────────────── */

/* Tablet (≤ 900px) */
@media (max-width: 900px) {
  #navbar { padding: 0 24px; }

  .nav-links > a { display: none; }

  #hero { padding: 64px 24px 120px; }
  .hero-stats {
    position: static;
    flex-direction: row; justify-content: flex-start;
    gap: 32px; margin-top: 48px;
  }
  .stat { text-align: left; }

  #services { padding: 64px 24px; }
  .service-card { grid-template-columns: 56px 1fr; padding: 24px; }
  .service-arrow { display: none; }
  .service-num { font-size: 36px; }

  #mission { padding: 56px 24px; }

  #about { padding: 64px 24px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { aspect-ratio: 16 / 9; }
  .values-list { grid-template-columns: 1fr; }

  #contact { grid-template-columns: 1fr; padding: 64px 24px; gap: 48px; }
  footer { padding: 20px 24px; flex-direction: column; gap: 12px; text-align: center; }
}

/* Mobile (≤ 520px) */
@media (max-width: 520px) {
  .hero-stats { flex-direction: column; gap: 20px; }
  .form-row { grid-template-columns: 1fr; }
  .lang-toggle { gap: 1px; }
  .lang-btn { padding: 4px 7px; }
}

/* ── Mobile Nav ────────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 36px; height: 36px; background: none; border: none;
  cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; height: 2px; background: var(--text);
  border-radius: 2px; transition: all 0.25s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed; top: 64px; left: 0; right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  flex-direction: column; gap: 0;
  z-index: 99;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.25s, opacity 0.25s;
}
.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
}
.mobile-nav-link {
  padding: 16px 24px; font-size: 15px; font-weight: 600;
  color: var(--text); border-bottom: 1px solid var(--gray-100);
  transition: background 0.15s;
}
.mobile-nav-link:hover { background: var(--gray-50); }

@media (max-width: 900px) {
  .hamburger { display: flex; }
  .mobile-nav { display: flex; }
}