/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-400: #60a5fa;
  --blue-50: #eff6ff;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--slate-700);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; }
a { color: inherit; }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 32px;
}
.nav-logo {
  display: inline-flex; align-items: center;
  text-decoration: none;
}
.nav-logo img { height: 32px; width: auto; display: block; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  font-size: 15px; font-weight: 500; color: var(--slate-700);
  text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover { color: var(--blue-600); }
.nav-links a.active { color: var(--blue-600); }
.nav-cta {
  background: var(--blue-600) !important; color: var(--white) !important;
  padding: 10px 24px !important; border-radius: 8px;
  font-weight: 600 !important; font-size: 14px !important;
  transition: background 0.2s;
}
.nav-cta:hover { background: #1d4ed8 !important; }
.nav-hamburger {
  display: none; background: none; border: none; cursor: pointer;
  width: 32px; height: 32px; flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px; background: var(--slate-700);
  border-radius: 2px; transition: all 0.3s;
}
/* Hamburger → X animation */
.menu-open .nav-hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-open .nav-hamburger span:nth-child(2) {
  opacity: 0;
}
.menu-open .nav-hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* Mobile slide-down menu */
.mobile-menu {
  display: none; flex-direction: column; padding: 0 32px;
  gap: 0; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease;
}
.mobile-menu a {
  font-size: 16px; font-weight: 500; color: var(--slate-700);
  text-decoration: none; padding: 12px 0;
  border-bottom: 1px solid var(--slate-100); transition: color 0.2s;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--blue-600); }
.mobile-menu a.active { color: var(--blue-600); }
.mobile-menu a.nav-cta {
  background: var(--blue-600); color: var(--white) !important;
  padding: 12px 24px; border-radius: 8px; text-align: center;
  margin-top: 8px; border-bottom: none;
}
.mobile-menu a.nav-cta:hover { background: #1d4ed8; }
.menu-open .mobile-menu {
  max-height: 400px; padding: 0 32px 20px;
}

/* ===== LANGUAGE TOGGLE ===== */
.lang-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.5px;
  margin-left: 16px;
}
.lang-toggle a {
  text-decoration: none; color: var(--slate-400);
  transition: color 0.2s;
}
.lang-toggle a:hover { color: var(--blue-600); }
.lang-toggle a.active-lang { color: var(--blue-600); }
.lang-toggle .lang-sep { color: var(--slate-300); user-select: none; }
.mobile-menu .lang-toggle {
  margin-left: 0; padding: 12px 0; justify-content: center;
  font-size: 15px; gap: 8px;
}

/* ===== HERO ===== */
.hero {
  padding: 160px 32px 100px;
  background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%);
  text-align: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner { max-width: 820px; margin: 0 auto; position: relative; }

.page-hero {
  padding: 160px 32px 80px;
  background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%);
  text-align: center;
  position: relative;
}
.page-hero-inner { max-width: 720px; margin: 0 auto; }

/* ===== BADGES ===== */
.badge {
  display: inline-block;
  font-size: 13px; font-weight: 600;
  color: var(--blue-600); background: var(--blue-50);
  padding: 6px 18px; border-radius: 999px;
  letter-spacing: 0.8px; text-transform: uppercase;
  margin-bottom: 24px;
  border: 1px solid rgba(59,130,246,0.15);
}
.solution-block .badge {
  font-size: 16px; padding: 8px 22px;
}

/* ===== TYPOGRAPHY ===== */
h1 {
  font-size: clamp(40px, 5.5vw, 62px);
  font-weight: 700; line-height: 1.1;
  color: var(--slate-900); margin-bottom: 24px;
  letter-spacing: -1.5px;
}
h1 .accent { color: var(--blue-600); }
h2 {
  font-size: clamp(32px, 3.5vw, 44px);
  font-weight: 700; line-height: 1.15;
  color: var(--slate-900); margin-bottom: 16px;
  letter-spacing: -0.8px;
}
h3 {
  font-size: 20px; font-weight: 700;
  color: var(--slate-900); margin-bottom: 10px;
}
.subtitle {
  font-size: 19px; line-height: 1.7;
  color: var(--slate-500); max-width: 600px;
  margin: 0 auto 40px;
}
.section-dark h2 { color: var(--white); }
.section-dark .subtitle { color: var(--slate-400); }

/* ===== BUTTONS ===== */
.btn-row { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; font-family: var(--font-body);
  font-size: 16px; font-weight: 600; border-radius: 10px;
  text-decoration: none; transition: all 0.25s ease;
  cursor: pointer; border: none;
}
.btn-primary {
  background: var(--blue-600); color: var(--white);
  box-shadow: 0 1px 3px rgba(37,99,235,0.3), 0 4px 12px rgba(37,99,235,0.15);
}
.btn-primary:hover {
  background: #1d4ed8;
  box-shadow: 0 2px 6px rgba(37,99,235,0.4), 0 8px 24px rgba(37,99,235,0.2);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--white); color: var(--slate-800);
  border: 1.5px solid var(--slate-200);
}
.btn-secondary:hover {
  border-color: var(--blue-400); color: var(--blue-600);
  background: var(--blue-50);
}

/* ===== SECTIONS ===== */
.section { padding: 100px 32px; }
.section-alt { background: var(--slate-50); }
.section-dark { background: var(--slate-900); color: var(--white); }
.container { max-width: 1200px; margin: 0 auto; overflow: hidden; }
.section-header {
  text-align: center; max-width: 640px;
  margin: 0 auto 64px;
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.feature-card {
  background: var(--white); border: 1px solid var(--slate-200);
  border-radius: 16px; padding: 36px 32px;
  transition: all 0.3s ease; position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-400));
  opacity: 0; transition: opacity 0.3s;
}
.feature-card:hover {
  border-color: var(--blue-400);
  box-shadow: 0 8px 32px rgba(37,99,235,0.08);
  transform: translateY(-2px);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px; height: 56px; background: var(--blue-50);
  border-radius: 12px; display: flex; align-items: center;
  justify-content: center; margin-bottom: 20px; padding: 10px;
}
.feature-icon img {
  width: 100%; height: 100%; object-fit: contain;
}
.feature-card p {
  font-size: 15px; color: var(--slate-500); line-height: 1.7;
}

/* ===== STATS ===== */
.stats-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px;
  padding: 48px 0; border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200); margin-top: 64px;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: clamp(40px, 4vw, 56px); font-weight: 700;
  color: var(--blue-600); line-height: 1.1;
  letter-spacing: -1px; margin-bottom: 8px;
}
.stat-label {
  font-size: 15px; font-weight: 500; color: var(--slate-500);
  text-transform: uppercase; letter-spacing: 1px;
}

/* ===== CUSTOMERS ===== */
.customers-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 40px 48px; align-items: center; justify-items: center;
  max-width: 960px; margin: 0 auto;
}
.customer-logo {
  max-height: 48px; max-width: 140px; width: auto; height: auto;
  object-fit: contain; opacity: 0.7;
  filter: grayscale(100%);
  transition: all 0.3s ease;
}
.customer-logo:hover {
  opacity: 1; filter: grayscale(0%);
}

/* ===== SOLUTION CARDS ===== */
.cards-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.card {
  background: var(--white); border: 1px solid var(--slate-200);
  border-radius: 20px; padding: 40px 32px 36px;
  display: flex; flex-direction: column; transition: all 0.3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  border-color: transparent;
}
.card-label {
  font-family: var(--font-mono); font-size: 17px; font-weight: 500;
  color: var(--blue-600); letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 16px;
}
.card h3 { font-size: 24px; letter-spacing: -0.3px; }
.card p {
  font-size: 15px; color: var(--slate-500); line-height: 1.7;
  margin-bottom: 24px; flex-grow: 1;
}
.card-link {
  font-size: 15px; font-weight: 600; color: var(--blue-600);
  text-decoration: none; display: inline-flex;
  align-items: center; gap: 6px; transition: gap 0.2s;
}
.card-link:hover { gap: 10px; }
.card-link::after { content: '→'; }

/* ===== SOLUTION DETAIL (long-form) ===== */
.solution-detail { padding: 80px 32px; }
.solution-block {
  max-width: 1200px; margin: 0 auto 80px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.solution-block.reverse { direction: rtl; }
.solution-block.reverse > * { direction: ltr; }
.solution-block h2 { font-size: clamp(28px, 3vw, 36px); margin-bottom: 16px; }
.solution-block p { font-size: 16px; color: var(--slate-600); line-height: 1.7; margin-bottom: 16px; }
.solution-block ul {
  list-style: none; padding: 0;
}
.solution-block ul li {
  font-size: 15px; color: var(--slate-600);
  padding: 6px 0 6px 24px; position: relative;
}
.solution-block ul li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--blue-500); font-weight: 600;
}
.solution-img-placeholder {
  background: var(--slate-100); border-radius: 16px;
  aspect-ratio: 4/3; display: flex; align-items: center;
  justify-content: center; color: var(--slate-400);
  font-size: 14px; font-weight: 500;
  border: 2px dashed var(--slate-300);
}
.solution-img {
  width: 100%; border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  border: 1px solid var(--slate-200);
}

/* ===== VALUES ===== */
.values-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.value-card {
  text-align: center; padding: 48px 32px;
  background: var(--white); border: 1px solid var(--slate-200);
  border-radius: 16px; transition: all 0.3s;
}
.value-card:hover {
  border-color: var(--blue-400);
  box-shadow: 0 8px 32px rgba(37,99,235,0.08);
}
.value-icon {
  width: 80px; height: 80px; background: var(--blue-50);
  border-radius: 16px; display: flex; align-items: center;
  justify-content: center; margin: 0 auto 20px; padding: 12px;
}
.value-icon img {
  width: 100%; height: 100%; object-fit: contain;
}
.value-card p {
  font-size: 15px; color: var(--slate-500); line-height: 1.7;
}

/* ===== CONTACT FORM ===== */
.form-wrapper {
  max-width: 620px; margin: 0 auto;
  background: var(--white); border: 1px solid var(--slate-200);
  border-radius: 20px; padding: 48px 40px;
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block; font-size: 14px; font-weight: 600;
  color: var(--slate-700); margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: 12px 16px;
  font-family: var(--font-body); font-size: 15px;
  border: 1.5px solid var(--slate-200); border-radius: 10px;
  background: var(--slate-50); color: var(--slate-800);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
  background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit {
  width: 100%; padding: 14px; font-family: var(--font-body);
  font-size: 16px; font-weight: 600; color: var(--white);
  background: var(--blue-600); border: none; border-radius: 10px;
  cursor: pointer; transition: background 0.2s;
}
.form-submit:hover { background: #1d4ed8; }

/* ===== CTA ===== */
.cta-section {
  padding: 100px 32px; background: var(--slate-900);
  text-align: center; position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(59,130,246,0.12) 0%, transparent 60%);
  pointer-events: none;
}
.cta-inner { position: relative; max-width: 640px; margin: 0 auto; }
.cta-section h2 {
  font-size: clamp(32px, 3.5vw, 44px); font-weight: 700;
  color: var(--white); margin-bottom: 16px; letter-spacing: -0.8px;
}
.cta-section p {
  font-size: 18px; color: var(--slate-400);
  margin-bottom: 40px; line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--slate-900);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 60px 32px 40px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
}
.footer-brand p {
  color: var(--slate-400); font-size: 14px;
  line-height: 1.7; margin-top: 16px; max-width: 280px;
}
.footer-col h4 {
  font-size: 13px; font-weight: 600; color: var(--slate-400);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 20px;
}
.footer-col a {
  display: block; font-size: 15px; color: var(--slate-400);
  text-decoration: none; padding: 4px 0; transition: color 0.2s;
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  max-width: 1200px; margin: 0 auto; padding-top: 32px;
  margin-top: 48px; border-top: 1px solid rgba(255,255,255,0.06);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: var(--slate-500);
}
.footer-logo {
  display: inline-flex; align-items: center;
  text-decoration: none;
}
.footer-logo img { height: 28px; width: auto; display: block; }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-inner, .page-hero-inner { animation: fadeUp 0.8s ease-out; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .features-grid, .cards-grid, .values-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .customers-grid { grid-template-columns: repeat(4, 1fr); gap: 32px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 16px; }
  .nav-links a:not(.nav-cta):not(.active) { display: none; }
  .solution-block { grid-template-columns: 1fr; gap: 32px; max-width: 100%; }
  .solution-block.reverse { direction: ltr; }
  .solution-img { max-width: 480px; margin: 0 auto; display: block; }
  .contact-info-grid { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
  .customers-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .hero, .page-hero { padding: 130px 20px 72px; }
  .section { padding: 72px 20px; }
  .cta-section { padding: 72px 20px; }
  .btn-row { flex-direction: column; align-items: center; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer { padding: 48px 20px 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .nav-inner { padding: 14px 20px; }
  .nav-logo img { height: 35px; }
  .nav-hamburger { width: 35px; height: 35px; }
  .nav-hamburger span { width: 25px; height: 2.5px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .mobile-menu { display: flex; }
  .form-wrapper { padding: 32px 24px; }
  .solution-img { max-width: 100%; }
  .stats-grid { grid-template-columns: 1fr; gap: 24px; }
  .customers-grid { max-width: 100%; }
  .customer-logo { max-height: 40px; max-width: 110px; }
  .solution-block { gap: 24px; }
}