/* ============================
   BlueHorizon Drone Services
   Global Stylesheet — Light Theme
   ============================ */

:root {
  --bg-deep: #e8f0f2;
  --bg-dark: #dce8ec;
  --bg-card: #ffffff;
  --bg-card-hover: #f4f9fa;
  --accent: #1a7a7a;
  --accent-dim: #15635f;
  --accent-light: #2ba3a0;
  --accent-glow: rgba(26, 122, 122, 0.07);
  --text: #1a2e35;
  --text-secondary: #4a6d78;
  --muted: #7a9faa;
  --danger: #c0392b;
  --success: #1a7a7a;
  --white: #ffffff;
  --dark-block-bg: #142d35;
  --dark-block-text: #e2eff3;
  --dark-block-muted: #9cbac6;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(20, 45, 53, 0.06);
  --shadow-md: 0 4px 16px rgba(20, 45, 53, 0.08);
  --shadow-lg: 0 12px 40px rgba(20, 45, 53, 0.1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-display);
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-dim); }
img { max-width: 100%; display: block; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 1.5rem; }

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 1rem 0;
  background: rgba(232, 240, 242, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(26, 122, 122, 0.08);
  transition: var(--transition);
}
.nav.scrolled { padding: 0.6rem 0; background: rgba(232, 240, 242, 0.96); box-shadow: var(--shadow-sm); }
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 0.6rem; }
.logo-img { height: 36px; width: auto; }
.logo-text { font-size: 1.1rem; color: var(--text); letter-spacing: 0.08em; }
.logo-text strong { color: var(--accent); }

.nav-links { list-style: none; display: flex; align-items: center; gap: 2rem; }
.nav-links a {
  color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.02em; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--accent); transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  background: var(--accent) !important; color: var(--white) !important;
  padding: 0.55rem 1.3rem !important; border-radius: 999px; font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--accent-dim) !important; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text);
  margin: 5px 0; transition: var(--transition);
}

.btn {
  display: inline-block; padding: 0.85rem 2rem; border-radius: 999px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  cursor: pointer; transition: var(--transition); border: none; letter-spacing: 0.02em;
}
.btn-primary {
  background: var(--accent); color: var(--white);
  box-shadow: 0 4px 20px rgba(26, 122, 122, 0.2);
}
.btn-primary:hover {
  background: var(--accent-dim); color: var(--white);
  box-shadow: 0 6px 28px rgba(26, 122, 122, 0.3);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent); color: var(--white);
  transform: translateY(-2px);
}

.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; padding: 8rem 1.5rem 4rem; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(26, 122, 122, 0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(26, 122, 122, 0.03) 0%, transparent 50%),
              var(--bg-deep);
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(26, 122, 122, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 122, 122, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content { position: relative; z-index: 2; max-width: 800px; text-align: center; }
.hero-tag {
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent);
  letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1.5rem;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 800;
  line-height: 1.1; margin-bottom: 1.5rem; letter-spacing: -0.02em; color: var(--text);
}
.accent-text { color: var(--accent); }
.hero-sub {
  font-size: 1.15rem; color: var(--text-secondary); max-width: 600px;
  margin: 0 auto 2.5rem; line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 4rem; }
.hero-stats { display: flex; gap: 3rem; justify-content: center; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-num { display: block; font-size: 2.2rem; font-weight: 800; color: var(--accent); font-family: var(--font-mono); }
.stat-label { font-size: 0.8rem; color: var(--muted); letter-spacing: 0.05em; text-transform: uppercase; }
.hero-scroll-indicator {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  color: var(--muted); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px; background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }

.section { padding: 6rem 0; }
.section-dark { background: var(--dark-block-bg); color: var(--dark-block-text); }
.section-dark .section-title { color: var(--dark-block-text); }
.section-dark .section-tag { color: var(--accent-light); }
.section-dark .accent-text { color: var(--accent-light); }
.section-dark p, .section-dark li { color: var(--dark-block-muted); }
.section-dark .service-card, .section-dark .trust-stat {
  background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.08);
}
.section-dark .service-card:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); }
.section-dark .service-card h3 { color: var(--dark-block-text); }
.section-dark .btn-outline { color: var(--accent-light); border-color: var(--accent-light); }
.section-dark .btn-outline:hover { background: var(--accent-light); color: var(--dark-block-bg); }
.section-dark .trust-num { color: var(--accent-light); }
.section-dark .trust-content p { color: var(--dark-block-muted); }

.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent);
  letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700;
  line-height: 1.2; letter-spacing: -0.01em; color: var(--text);
}

.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.compare-card { padding: 2.5rem; border-radius: var(--radius); }
.compare-old { background: rgba(192, 57, 43, 0.04); border: 1px solid rgba(192, 57, 43, 0.12); }
.compare-new { background: rgba(26, 122, 122, 0.05); border: 1px solid rgba(26, 122, 122, 0.15); }
.section-dark .compare-old { background: rgba(192, 57, 43, 0.08); border-color: rgba(192, 57, 43, 0.2); }
.section-dark .compare-new { background: rgba(43, 163, 160, 0.1); border-color: rgba(43, 163, 160, 0.2); }
.section-dark .compare-card h3 { color: var(--dark-block-text); }
.compare-icon {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 700; margin-bottom: 1.2rem;
}
.compare-old .compare-icon { background: rgba(192, 57, 43, 0.1); color: var(--danger); }
.compare-new .compare-icon { background: rgba(26, 122, 122, 0.1); color: var(--accent); }
.compare-card h3 { font-size: 1.3rem; margin-bottom: 1.2rem; }
.compare-card ul { list-style: none; display: flex; flex-direction: column; gap: 0.8rem; }
.compare-card li { color: var(--text-secondary); font-size: 0.95rem; padding-left: 1.2rem; position: relative; }
.compare-card li::before { content: ''; position: absolute; left: 0; top: 0.55rem; width: 6px; height: 6px; border-radius: 50%; }
.compare-old li::before { background: var(--danger); }
.compare-new li::before { background: var(--accent); }

.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.service-card {
  background: var(--bg-card); border: 1px solid rgba(26, 122, 122, 0.08);
  border-radius: var(--radius); padding: 2rem; transition: var(--transition); box-shadow: var(--shadow-sm);
}
.service-card:hover { background: var(--bg-card-hover); border-color: rgba(26, 122, 122, 0.15); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-icon { width: 48px; height: 48px; color: var(--accent); margin-bottom: 1.2rem; }
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 1.05rem; margin-bottom: 0.6rem; color: var(--text); }
.service-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

.trust-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.trust-content p { color: var(--text-secondary); margin-bottom: 1rem; line-height: 1.7; }
.trust-numbers { display: flex; flex-direction: column; gap: 2rem; }
.trust-stat { background: var(--bg-card); border: 1px solid rgba(26, 122, 122, 0.08); border-radius: var(--radius); padding: 1.8rem 2rem; box-shadow: var(--shadow-sm); }
.trust-num { display: block; font-family: var(--font-mono); font-size: 2rem; font-weight: 700; color: var(--accent); margin-bottom: 0.3rem; }
.trust-label { font-size: 0.88rem; color: var(--text-secondary); }

.cta-section { padding: 4rem 0 6rem; }
.cta-box {
  text-align: center; padding: 4rem 2rem; border-radius: var(--radius);
  background: var(--dark-block-bg); color: var(--dark-block-text);
}
.cta-box h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 1rem; color: var(--dark-block-text); }
.cta-box p { color: var(--dark-block-muted); max-width: 540px; margin: 0 auto 2rem; }
.cta-box .btn-primary { background: var(--accent-light); }
.cta-box .btn-primary:hover { background: var(--white); color: var(--dark-block-bg); }

.footer { background: var(--dark-block-bg); border-top: 1px solid rgba(255,255,255,0.06); padding: 4rem 0 2rem; color: var(--dark-block-text); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.5fr; gap: 2rem; margin-bottom: 3rem; }
.footer .logo-text { color: var(--dark-block-text); }
.footer .logo-text strong { color: var(--accent-light); }
.footer-brand p { color: var(--dark-block-muted); font-size: 0.9rem; margin-top: 0.8rem; }
.footer-social { display: flex; gap: 1rem; margin-top: 1rem; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center;
  color: var(--dark-block-muted); transition: var(--transition);
}
.footer-social a svg { width: 18px; height: 18px; }
.footer-social a:hover { background: var(--accent-light); color: var(--dark-block-bg); }
.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--dark-block-text); margin-bottom: 0.5rem; }
.footer-links a { color: var(--dark-block-muted); font-size: 0.88rem; }
.footer-links a:hover { color: var(--accent-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 1.5rem; text-align: center; }
.footer-bottom p { color: var(--dark-block-muted); font-size: 0.8rem; }

.page-hero {
  padding: 10rem 1.5rem 4rem; text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(26,122,122,0.05) 0%, transparent 60%), var(--bg-deep);
}
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; margin-bottom: 1rem; color: var(--text); }
.page-hero p { color: var(--text-secondary); max-width: 600px; margin: 0 auto; font-size: 1.1rem; }

.timeline { position: relative; padding: 2rem 0; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--accent), rgba(26,122,122,0.1)); transform: translateX(-50%);
}
.timeline-item { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-bottom: 4rem; position: relative; }
.timeline-item::before {
  content: ''; position: absolute; left: 50%; top: 1.5rem;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); transform: translateX(-50%);
  box-shadow: 0 0 16px rgba(26,122,122,0.3);
}
.timeline-date { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); letter-spacing: 0.08em; }
.timeline-content { padding: 1.5rem; background: var(--bg-card); border-radius: var(--radius); border: 1px solid rgba(26,122,122,0.08); box-shadow: var(--shadow-sm); }
.timeline-content h3 { font-size: 1.15rem; margin-bottom: 0.6rem; color: var(--text); }
.timeline-content p { font-size: 0.93rem; color: var(--text-secondary); line-height: 1.7; }
.timeline-item:nth-child(odd) .timeline-date { text-align: right; padding-right: 2rem; }
.timeline-item:nth-child(odd) .timeline-content { grid-column: 2; }
.timeline-item:nth-child(even) .timeline-date { grid-column: 2; padding-left: 2rem; }
.timeline-item:nth-child(even) .timeline-content { grid-column: 1; grid-row: 1; }

.data-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.data-card { background: var(--bg-card); border: 1px solid rgba(26,122,122,0.08); border-radius: var(--radius); padding: 2rem; text-align: center; box-shadow: var(--shadow-sm); }
.data-card .big-num { font-family: var(--font-mono); font-size: 2.5rem; font-weight: 700; color: var(--accent); }
.data-card .big-label { font-size: 0.88rem; color: var(--text-secondary); margin-top: 0.4rem; }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.value-card { background: var(--bg-card); border: 1px solid rgba(26,122,122,0.08); border-radius: var(--radius); padding: 2rem; transition: var(--transition); box-shadow: var(--shadow-sm); }
.value-card:hover { border-color: rgba(26,122,122,0.18); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.value-card h3 { color: var(--accent); margin-bottom: 0.6rem; font-size: 1.1rem; }
.value-card p { color: var(--text-secondary); font-size: 0.93rem; }

.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.team-card { background: var(--bg-card); border: 1px solid rgba(26,122,122,0.08); border-radius: var(--radius); overflow: hidden; transition: var(--transition); box-shadow: var(--shadow-sm); }
.team-card:hover { border-color: rgba(26,122,122,0.18); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.team-photo { height: 260px; background: linear-gradient(135deg, var(--bg-deep), var(--bg-dark)); display: flex; align-items: center; justify-content: center; font-size: 3rem; color: var(--accent); opacity: 0.35; }
.team-info { padding: 1.5rem; }
.team-info h3 { font-size: 1.15rem; margin-bottom: 0.2rem; color: var(--text); }
.team-info .team-role { font-size: 0.85rem; color: var(--accent); font-family: var(--font-mono); margin-bottom: 0.6rem; }
.team-info p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0.8rem; }
.team-info a.team-linkedin { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: var(--muted); }
.team-info a.team-linkedin:hover { color: var(--accent); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.4rem; font-weight: 500; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 0.85rem 1rem; background: var(--bg-card);
  border: 1px solid rgba(26,122,122,0.12); border-radius: var(--radius-sm);
  color: var(--text); font-family: var(--font-display); font-size: 0.95rem; transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(26,122,122,0.08); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-card); }

.contact-info-cards { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info-card { background: var(--bg-card); border: 1px solid rgba(26,122,122,0.08); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow-sm); }
.contact-info-card h3 { font-size: 1rem; margin-bottom: 0.4rem; color: var(--text); }
.contact-info-card p, .contact-info-card a { font-size: 0.9rem; color: var(--text-secondary); }

.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.blog-card { background: var(--bg-card); border: 1px solid rgba(26,122,122,0.08); border-radius: var(--radius); overflow: hidden; transition: var(--transition); box-shadow: var(--shadow-sm); }
.blog-card:hover { border-color: rgba(26,122,122,0.18); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.blog-thumb { height: 180px; background: linear-gradient(135deg, var(--bg-deep), var(--bg-dark)); display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 0.85rem; font-family: var(--font-mono); }
.blog-body { padding: 1.5rem; }
.blog-body .blog-date { font-size: 0.78rem; color: var(--muted); font-family: var(--font-mono); margin-bottom: 0.6rem; }
.blog-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; line-height: 1.4; color: var(--text); }
.blog-body p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

@media (max-width: 968px) {
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: var(--bg-card); flex-direction: column; padding: 5rem 2rem 2rem;
    gap: 1.5rem; transition: var(--transition);
    border-left: 1px solid rgba(26,122,122,0.08); box-shadow: var(--shadow-lg);
  }
  .nav-links.open { right: 0; }
  .nav-toggle { display: block; z-index: 1001; }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .compare-grid, .trust-grid, .contact-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .values-grid, .team-grid, .data-cards, .blog-grid { grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 1.5rem; }
  .timeline-item { grid-template-columns: 1fr; padding-left: 3rem; }
  .timeline-item::before { left: 1.5rem; }
  .timeline-item:nth-child(odd) .timeline-date,
  .timeline-item:nth-child(even) .timeline-date { text-align: left; padding: 0; grid-column: 1; }
  .timeline-item:nth-child(even) .timeline-content { grid-column: 1; grid-row: auto; }
  .hero-stats { gap: 1.5rem; }
}

@media (max-width: 640px) {
  .services-grid, .values-grid, .team-grid, .data-cards, .blog-grid,
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 7rem 1.2rem 3rem; }
  .hero-title { font-size: 2rem; }
  .section { padding: 4rem 0; }
  .hero-stats { flex-direction: column; gap: 1.2rem; }
}