/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a2e;
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ── Navbar ────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: transparent;
  transition: background 0.4s, box-shadow 0.4s;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}
.nav-container {
  max-width: 1080px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-img {
  height: 32px; width: auto; flex-shrink: 0;
  filter: brightness(0) invert(1);
  transition: filter 0.4s;
}
.navbar.scrolled .nav-logo-img { filter: none; }
.logo-text {
  font-size: 1.15rem; font-weight: 700; color: #fff;
  letter-spacing: -0.01em; transition: color 0.4s;
}
.navbar.scrolled .logo-text { color: #111; }

.nav-links { display: flex; list-style: none; align-items: center; gap: 36px; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500; color: rgba(255,255,255,0.8);
  transition: color 0.3s; letter-spacing: 0.01em;
}
.nav-links a:hover { color: #fff; }
.navbar.scrolled .nav-links a { color: #555; }
.navbar.scrolled .nav-links a:hover { color: #111; }

.nav-cta {
  padding: 8px 20px !important;
  border: 1.5px solid rgba(255,255,255,0.4) !important;
  border-radius: 6px;
  transition: border-color 0.3s, background 0.3s, color 0.3s !important;
}
.nav-cta:hover { border-color: #fff !important; background: rgba(255,255,255,0.1); }
.navbar.scrolled .nav-cta {
  border-color: #111 !important; color: #111 !important;
}
.navbar.scrolled .nav-cta:hover {
  background: #111 !important; color: #fff !important;
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  width: 22px; height: 1.5px; background: #fff; border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s, background 0.4s;
}
.navbar.scrolled .nav-toggle span { background: #333; }

/* ── Hero ──────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 24px 100px;
  background: #0b1d35;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: url('hero-bg.jpg') center 35% / cover no-repeat;
  opacity: 0.45;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(11,29,53,0.75) 0%, rgba(11,29,53,0.5) 50%, rgba(11,29,53,0.7) 100%);
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 1080px; margin: 0 auto; width: 100%;
}
.hero-tag {
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: rgba(255,255,255,0.45);
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800; color: #fff;
  letter-spacing: -0.03em; line-height: 1.1;
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.55); font-weight: 400;
  max-width: 540px; line-height: 1.7;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 13px 28px;
  font-size: 0.9rem; font-weight: 600; border-radius: 8px;
  transition: background 0.25s, color 0.25s, transform 0.15s, box-shadow 0.25s;
  cursor: pointer; border: none;
}
.btn-primary {
  background: #fff; color: #0b1d35;
}
.btn-primary:hover {
  background: #e8edf4; transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.btn-outline {
  background: transparent; color: rgba(255,255,255,0.7);
  border: 1.5px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
  color: #fff; border-color: rgba(255,255,255,0.5);
}

/* ── About ─────────────────────────────────────────────── */
.about { padding: 120px 0; background: #fff; }

.section-header { max-width: 600px; margin-bottom: 72px; }
.section-tag {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: #5a7db5; margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800; color: #111; letter-spacing: -0.03em;
  line-height: 1.15; margin-bottom: 20px;
}
.section-subtitle {
  font-size: 1.05rem; color: #666; line-height: 1.75;
}

.features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px;
}
.feature { padding-top: 32px; border-top: 2px solid #eee; }
.feature-icon {
  width: 40px; height: 40px; margin-bottom: 24px;
}
.feature-icon svg { width: 100%; height: 100%; }
.feature h3 {
  font-size: 1.15rem; font-weight: 700; color: #111;
  margin-bottom: 12px; letter-spacing: -0.01em;
}
.feature p { font-size: 0.95rem; color: #666; line-height: 1.7; }

/* ── Contact ───────────────────────────────────────────── */
.contact { padding: 120px 0; background: #f7f8fa; }
.contact .section-header { text-align: left; margin-bottom: 0; }

.contact-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start;
}
.contact-info { margin-top: 32px; }
.contact-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.95rem; color: #5a7db5; font-weight: 500;
  transition: color 0.2s;
}
.contact-link:hover { color: #3a5d95; }
.contact-link svg { width: 18px; height: 18px; flex-shrink: 0; }

.contact-form {
  display: flex; flex-direction: column; gap: 20px;
}
.form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.form-group {
  display: flex; flex-direction: column; gap: 6px;
}
.form-group label {
  font-size: 0.8rem; font-weight: 600; color: #444;
  letter-spacing: 0.02em;
}
.form-group input,
.form-group textarea {
  font-family: inherit; font-size: 0.95rem; color: #111;
  padding: 12px 14px; border: 1.5px solid #dde1e8; border-radius: 8px;
  background: #fff; transition: border-color 0.2s, box-shadow 0.2s;
  outline: none; resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #aab0bc;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: #5a7db5;
  box-shadow: 0 0 0 3px rgba(90,125,181,0.1);
}
.btn-submit {
  align-self: flex-start;
  padding: 13px 32px; font-size: 0.9rem; font-weight: 600;
  border: none; border-radius: 8px; cursor: pointer;
  background: #0b1d35; color: #fff;
  transition: background 0.25s, transform 0.15s, box-shadow 0.25s;
}
.btn-submit:hover {
  background: #142d4f; transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(11,29,53,0.2);
}
.btn-submit:disabled {
  opacity: 0.6; cursor: not-allowed; transform: none;
  box-shadow: none;
}
.form-status {
  font-size: 0.9rem; margin-top: 8px; min-height: 1.4em;
}
.form-status.success { color: #2e7d32; }
.form-status.error { color: #c62828; }

/* ── Footer ────────────────────────────────────────────── */
.footer {
  background: #0b1d35; padding: 32px 24px;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; color: rgba(255,255,255,0.4);
}
.footer-inner a { color: rgba(255,255,255,0.5); transition: color 0.2s; }
.footer-inner a:hover { color: #fff; }

/* ── Mobile ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-container { padding: 0 20px; }
  .nav-logo-img { height: 28px; }
  .logo-text { font-size: 1rem; }

  .nav-links {
    position: fixed; top: 72px; left: 0; right: 0;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(16px);
    flex-direction: column; align-items: center; gap: 0;
    padding: 12px 0 20px; transform: translateY(-120%);
    transition: transform 0.35s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    visibility: hidden;
  }
  .nav-links.open { transform: translateY(0); visibility: visible; }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links a {
    display: block; padding: 14px 0; font-size: 0.95rem; color: #333 !important;
  }
  .nav-links a:hover { color: #111 !important; }
  .nav-cta { border: none !important; }

  .hero { padding: 120px 20px 80px; min-height: 0; }
  .hero-bg { background-position: center center; }
  .hero-title br { display: none; }
  .features { grid-template-columns: 1fr; gap: 36px; }
  .about { padding: 80px 0; }
  .contact { padding: 80px 0; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { text-align: center; }
}

/* ── Animations ────────────────────────────────────────── */
.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }