/* ═══════════════════════════════════════════════════════════════════
   Syntarxis Landing — Design System
   Premium, moderno, performance-first. Sem dependências de frameworks.
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─────────────────────────────────────────────── */
:root {
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.08);
  --border: #e2e8f0;
  --border-light: #f1f5f9;

  --text: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;

  --accent: #06b6d4;
  --accent-dark: #0891b2;
  --accent-light: rgba(6, 182, 212, 0.12);
  --accent-glow: rgba(6, 182, 212, 0.35);

  --green: #10b981;      --green-light: rgba(16, 185, 129, 0.12);
  --blue: #3b82f6;       --blue-light: rgba(59, 130, 246, 0.12);
  --purple: #8b5cf6;     --purple-light: rgba(139, 92, 246, 0.12);
  --red: #ef4444;         --red-light: rgba(239, 68, 68, 0.12);
  --orange: #f97316;      --orange-light: rgba(249, 115, 22, 0.12);
  --teal: #14b8a6;        --teal-light: rgba(20, 184, 166, 0.12);
  --pink: #ec4899;        --pink-light: rgba(236, 72, 153, 0.12);

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);

  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.container { max-width: 1152px; margin: 0 auto; padding: 0 28px; }
.accent { color: var(--accent); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.55rem, 3.4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--text);
}

.section-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 540px;
  margin: 0 auto;
}

section { padding: 92px 0; }
.section-alt { background: var(--bg-alt); }

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  padding: 12px 24px;
  font-size: 0.92rem;
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-glass {
  background: transparent;
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  padding: 12px 24px;
  font-size: 0.92rem;
}
.btn-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
}

.btn-lg { padding: 15px 30px; font-size: 0.96rem; border-radius: var(--radius-lg); }

/* ─── Navbar ────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(255, 255, 255, 0.94); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon { border-radius: 7px; display: flex; flex-shrink: 0; }
.logo-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.nav-links { display: flex; align-items: center; gap: 6px; }

.nav-links > a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-links > a:hover { color: var(--text); background: var(--bg-alt); }

.nav-btn-blog {
  background: var(--accent) !important;
  color: #ffffff !important;
  font-weight: 600 !important;
  margin-left: 6px;
  padding: 8px 18px !important;
}
.nav-btn-blog:hover { background: var(--accent-dark) !important; box-shadow: 0 2px 8px var(--accent-glow); }

.nav-divider { width: 1px; height: 24px; background: var(--border); margin: 0 4px; }
.nav-toggle { display: none; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 7px 10px;
  font-size: 14px;
  line-height: 1;
  transition: all var(--transition);
  display: flex;
  align-items: center;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: none; }
:root:not([data-theme]) .theme-icon-dark { display: none; }

.lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 22px 7px 10px;
  transition: all var(--transition);
}
.lang-select:hover { color: var(--accent); border-color: var(--accent); }
.lang-select option { background: var(--bg); color: var(--text); font-family: var(--font); }

/* ─── Hero ──────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
  padding: 120px 0 80px;
  background: linear-gradient(170deg, #0f172a 0%, #164e63 45%, #0e7490 75%, #0f172a 100%);
  color: #ffffff;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(100px); }
.hero-glow-1 { width: 500px; height: 500px; background: #06b6d4; top: -180px; right: -120px; opacity: 0.45; }
.hero-glow-2 { width: 380px; height: 380px; background: #8b5cf6; bottom: -140px; left: -100px; opacity: 0.45; }
.hero-glow-3 { width: 300px; height: 300px; background: #10b981; top: 40%; left: 50%; transform: translate(-50%, -50%); opacity: 0.25; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 70%);
}
.hero .container { position: relative; z-index: 2; }

.hero-badge {
  display: inline-block;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  margin-bottom: 28px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}

.hero-title { display: flex; flex-direction: column; gap: 4px; margin-bottom: 24px; }
.hero-title-line {
  display: block;
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.08;
}
.hero-title-accent {
  background: linear-gradient(135deg, #22d3ee 0%, #a78bfa 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.65;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 52px; }
.hero-trust { display: flex; gap: 16px 32px; justify-content: center; flex-wrap: wrap; }
.hero-trust-item { display: flex; align-items: center; gap: 8px; font-size: 0.84rem; color: rgba(255, 255, 255, 0.55); font-weight: 500; }
.hero-trust-item i { color: rgba(255, 255, 255, 0.35); font-size: 15px; }

.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: rgba(255, 255, 255, 0.4); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase;
  animation: bounce-down 2s ease-in-out infinite; z-index: 2;
}
@keyframes bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ─── Stats ─────────────────────────────────────────────────────── */
.stats { padding: 0; margin-top: -1px; position: relative; z-index: 3; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  margin-top: -40px;
}
.stat-item { background: var(--bg); padding: 36px 20px; text-align: center; }
.stat-number { font-size: 2.5rem; font-weight: 900; color: var(--accent); letter-spacing: -0.03em; line-height: 1; margin-bottom: 6px; }
.stat-plus { font-size: 1.3rem; font-weight: 700; }
.stat-label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }

/* ─── About ─────────────────────────────────────────────────────── */
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 44px; }
.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--transition);
}
.about-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.about-card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius);
  background: var(--accent-light);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto 18px;
}
.about-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.about-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }

.about-differentiators { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.diff-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 18px 22px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  font-size: 0.9rem; color: var(--text-secondary);
  line-height: 1.6;
  transition: all var(--transition);
}
.diff-item:hover { background: var(--accent-light); }
.diff-item i { color: var(--accent); font-size: 1.15rem; flex-shrink: 0; margin-top: 2px; }
.diff-item strong { color: var(--text); font-weight: 600; }

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

.product-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px 28px 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.product-card-glow {
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  transition: height 0.35s ease;
  opacity: 0;
}

.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); border-color: transparent; }
.product-card:hover .product-card-glow { opacity: 1; height: 5px; }

.product-card-green .product-card-glow  { background: linear-gradient(90deg, #10b981, #34d399); }
.product-card-blue .product-card-glow   { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.product-card-purple .product-card-glow { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.product-card-red .product-card-glow    { background: linear-gradient(90deg, #ef4444, #f87171); }
.product-card-orange .product-card-glow { background: linear-gradient(90deg, #f97316, #fb923c); }
.product-card-teal .product-card-glow   { background: linear-gradient(90deg, #14b8a6, #5eead4); }
.product-card-pink .product-card-glow   { background: linear-gradient(90deg, #ec4899, #f472b6); }

.product-card-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 18px; }

.product-badge {
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.badge-green  { background: var(--green-light);  color: var(--green); }
.badge-blue   { background: var(--blue-light);   color: var(--blue); }
.badge-purple { background: var(--purple-light); color: var(--purple); }
.badge-red    { background: var(--red-light);    color: var(--red); }
.badge-orange { background: var(--orange-light); color: var(--orange); }
.badge-teal   { background: var(--teal-light);   color: var(--teal); }
.badge-pink   { background: var(--pink-light);   color: var(--pink); }

.product-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; color: var(--accent);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.product-name { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 10px; color: var(--text); }
.product-desc { font-size: 0.87rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 20px; flex: 1; }

.product-features {
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 22px;
  padding: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  font-size: 0.82rem; color: var(--text-secondary);
}
.product-features span { display: flex; align-items: center; gap: 8px; }
.product-features i { color: var(--accent); font-size: 0.75rem; flex-shrink: 0; }

.product-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.88rem; font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  transition: gap var(--transition);
}
.product-link:hover { gap: 10px; }
.product-link i.fa-clock { color: var(--text-tertiary); }

/* ─── Services ──────────────────────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}
.service-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.service-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--accent-light);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin-bottom: 16px;
}
.service-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.service-card p { font-size: 0.86rem; color: var(--text-secondary); line-height: 1.6; }

/* ─── CTA Blog ──────────────────────────────────────────────────── */
.cta-blog { padding: 0 0 92px; }
.cta-blog-card {
  display: flex; align-items: center; gap: 48px;
  background: linear-gradient(140deg, #0f172a 0%, #164e63 70%, #0e7490 100%);
  border-radius: var(--radius-xl);
  padding: 52px 56px;
  overflow: hidden; position: relative;
  color: #ffffff;
}
.cta-blog-card::before {
  content: '';
  position: absolute;
  width: 320px; height: 320px;
  background: rgba(6, 182, 212, 0.15);
  border-radius: 50%; filter: blur(80px);
  top: -100px; right: -80px;
  pointer-events: none;
}
.cta-blog-content { flex: 1; position: relative; z-index: 1; }
.cta-blog-content .section-tag {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
}
.cta-blog-content h2 { font-size: clamp(1.4rem, 2.5vw, 1.85rem); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 10px; }
.cta-blog-content p { color: rgba(255, 255, 255, 0.65); font-size: 0.94rem; margin-bottom: 24px; max-width: 440px; line-height: 1.6; }
.cta-blog-visual { position: relative; z-index: 1; flex-shrink: 0; }
.cta-blog-icon-wrap {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; color: rgba(255, 255, 255, 0.5);
}

/* ─── FAQ ───────────────────────────────────────────────────────── */
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--accent); }
.faq-item[open] { border-color: var(--accent); box-shadow: var(--shadow-md); }
.faq-item summary {
  cursor: pointer; font-weight: 600;
  padding: 20px 24px;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
  font-size: 0.95rem; color: var(--text);
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 400; line-height: 1;
  transition: all var(--transition);
}
.faq-item[open] summary::after { content: '\2212'; border-color: var(--accent); background: var(--accent-light); }
.faq-answer { padding: 0 24px 22px; }
.faq-answer p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.65; }
.faq-answer a { color: var(--accent); font-weight: 500; }

/* ─── Contact ───────────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 820px; margin: 0 auto; }
.contact-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-decoration: none;
  color: var(--text);
  cursor: pointer;
  font-family: var(--font);
  transition: all var(--transition);
}
.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.contact-card-icon {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; margin-bottom: 16px;
  transition: all var(--transition);
}
.contact-card:hover .contact-card-icon { background: var(--accent); color: #ffffff; }
.contact-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.contact-card p { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 8px; }
.contact-card-hint { font-size: 0.75rem; color: var(--text-tertiary); font-weight: 500; }
.contact-card-whatsapp .contact-card-icon { background: rgba(37, 211, 102, 0.12); color: #25d366; }
.contact-card-whatsapp:hover .contact-card-icon { background: #25d366; color: #ffffff; }
.contact-social-links { display: flex; gap: 10px; margin-top: 8px; }
.contact-social-links a {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  transition: all var(--transition);
}
.contact-social-links a:hover { background: var(--accent); border-color: var(--accent); color: #ffffff; }

/* ─── Footer ────────────────────────────────────────────────────── */
.footer { background: var(--text); color: #94a3b8; padding: 60px 0 28px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-logo { display: inline-flex; text-decoration: none; margin-bottom: 14px; }
.footer-logo .logo-text { color: #ffffff; font-size: 1.15rem; }
.footer-desc { font-size: 0.84rem; line-height: 1.6; max-width: 340px; margin-bottom: 18px; }
.footer-social-inline { display: flex; gap: 10px; }
.footer-social-inline a {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  display: flex; align-items: center; justify-content: center;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all var(--transition);
}
.footer-social-inline a:hover { background: var(--accent); color: #ffffff; }
.footer-col h4 {
  font-size: 0.82rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: #ffffff; margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  color: #94a3b8; text-decoration: none;
  font-size: 0.86rem;
  transition: color var(--transition);
}
.footer-col ul a:hover { color: #ffffff; }
.footer-links-social { display: flex; flex-direction: column; gap: 10px; }
.footer-links-social a {
  display: inline-flex; align-items: center; gap: 8px;
  color: #94a3b8; text-decoration: none;
  font-size: 0.86rem;
  transition: color var(--transition);
}
.footer-links-social a:hover { color: #ffffff; }
.footer-links-social a i { font-size: 14px; width: 18px; text-align: center; }
.footer-bottom { text-align: center; padding-top: 24px; font-size: 0.8rem; color: #64748b; }

/* ─── Animations ────────────────────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
[data-animate].animate-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-animate] { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { max-width: 600px; }
}

@media (max-width: 768px) {
  section { padding: 64px 0; }
  .hero { min-height: auto; padding: 140px 0 70px; }
  .hero-title-line { font-size: clamp(1.8rem, 7vw, 2.6rem); }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; justify-content: center; max-width: 340px; }
  .hero-trust { display: none; }
  .hero-scroll { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); margin-top: -28px; border-radius: var(--radius-lg); }
  .stat-number { font-size: 2rem; }

  .about-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto 32px; }

  .products-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .services-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; max-width: 400px; }

  .cta-blog-card { flex-direction: column; text-align: center; padding: 36px 28px; gap: 24px; }
  .cta-blog-content p { max-width: none; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }

  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px; z-index: 1001;
  }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }
  .nav-links {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    align-items: stretch; gap: 2px;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .nav-links > a { padding: 12px 4px; font-size: 0.92rem; }
  .nav-btn-blog { margin: 10px 0 4px; text-align: center; justify-content: center; }
  .nav-divider { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .stats-grid { margin-top: -20px; }
  .stat-item { padding: 24px 12px; }
  .stat-number { font-size: 1.6rem; }
  .about-differentiators { gap: 10px; }
  .diff-item { padding: 14px 16px; font-size: 0.84rem; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════════════
   DARK MODE
   ═══════════════════════════════════════════════════════════════════ */
[data-theme="dark"] {
  --bg: #0f172a;
  --bg-alt: #1a2332;
  --bg-card: #1e293b;
  --bg-glass: rgba(30, 41, 59, 0.6);
  --border: #334155;
  --border-light: #273548;
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] body { background: var(--bg); }
[data-theme="dark"] .nav { background: rgba(15, 23, 42, 0.85); backdrop-filter: blur(18px) saturate(180%); -webkit-backdrop-filter: blur(18px) saturate(180%); }
[data-theme="dark"] .nav.scrolled { background: rgba(15, 23, 42, 0.94); }
[data-theme="dark"] .section-alt { background: #151d2b; }
[data-theme="dark"] .about-card:hover { border-color: var(--accent); }
[data-theme="dark"] .service-card:hover { border-color: var(--accent); }
[data-theme="dark"] .product-card:hover { border-color: transparent; box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.2), var(--shadow-xl); }
[data-theme="dark"] .product-card-green  { background: #1a2520; }
[data-theme="dark"] .product-card-blue   { background: #1a2230; }
[data-theme="dark"] .product-card-purple { background: #1e1a2e; }
[data-theme="dark"] .product-card-red    { background: #1f1a1a; }
[data-theme="dark"] .product-card-orange { background: #1f1c18; }
[data-theme="dark"] .product-card-teal   { background: #182420; }
[data-theme="dark"] .product-card-pink   { background: #1f1a20; }
[data-theme="dark"] .diff-item { background: #1a2332; }
[data-theme="dark"] .diff-item:hover { background: rgba(6, 182, 212, 0.08); }
[data-theme="dark"] .cta-blog-card { background: linear-gradient(140deg, #020617 0%, #1e293b 70%, #0f4c5c 100%); }
[data-theme="dark"] .nav-links > a:hover { background: rgba(255, 255, 255, 0.04); }
[data-theme="dark"] .product-features { background: rgba(0, 0, 0, 0.15); }
[data-theme="dark"] .stats-grid { background: #1e293b; }
[data-theme="dark"] .stat-item { background: #1e293b; }