/* ========================================
   VARIABLES & RESET
======================================== */
:root {
  --clr-bg:        #f8fafc;
  --clr-bg-dark:   #0f172a;
  --clr-primary:   #1d4ed8;
  --clr-primary-h: #1e40af;
  --clr-accent:    #f97316;
  --clr-text:      #1e293b;
  --clr-muted:     #64748b;
  --clr-border:    #e2e8f0;
  --clr-card:      #ffffff;
  --clr-success:   #16a34a;

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:  0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 10px 40px rgba(0,0,0,.13);

  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --max-w: 1120px;
  --section-gap: 96px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }

/* ========================================
   UTILITIES
======================================== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--clr-accent); }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header--left { text-align: left; margin-bottom: 36px; }

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--clr-muted);
  max-width: 600px;
  margin: 0 auto;
}
.section-header--left .section-sub { margin: 0; }

/* ========================================
   BUTTONS
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(29, 78, 216, 0.35);
}
.btn--primary:hover {
  background: var(--clr-primary-h);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(29, 78, 216, 0.45);
}

.btn--outline {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: transparent;
}
.btn--outline:hover {
  background: var(--clr-primary);
  color: #fff;
}

.btn--ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: rgba(255,255,255,0.25);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.22);
}

.btn--full { width: 100%; justify-content: center; }

/* ========================================
   NAV
======================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248,250,252,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.nav--scrolled {
  border-color: var(--clr-border);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--clr-bg-dark);
  letter-spacing: -0.03em;
  flex-shrink: 0;
}
.logo__icon { font-size: 1.4rem; }

.nav__links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav__links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--clr-primary); }

.nav__cta { padding: 10px 20px; font-size: 0.9rem; }

/* Hamburger button */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
  flex-shrink: 0;
}
.burger span {
  display: block;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}
.burger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger--open span:nth-child(2) { opacity: 0; }
.burger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================================
   HERO
======================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a6e 50%, #1d4ed8 100%);
  color: #fff;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero__bg-shape {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(249,115,22,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  padding: 6px 18px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.9);
}

.hero__title {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 780px;
  margin-bottom: 24px;
}
.hero__title .accent { color: var(--clr-accent); }

.hero__sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.stat__num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}
.stat__label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  font-weight: 400;
}

/* ========================================
   NICHES
======================================== */
.niches {
  padding: var(--section-gap) 0;
}

.niches__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.niche-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.niche-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.niche-card--featured {
  border-color: var(--clr-primary);
  background: linear-gradient(135deg, #eff6ff 0%, #fff 100%);
  grid-column: span 1;
}
.niche-card--cta {
  border: 2px dashed var(--clr-accent);
  background: linear-gradient(135deg, #fff7ed 0%, #fff 100%);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.niche-card--cta .niche-card__icon { font-size: 2.6rem; }
.niche-card--cta .niche-card__title { color: var(--clr-accent); }
.niche-card__cta-btn {
  display: inline-block;
  margin-top: auto;
  padding: 10px 24px;
  background: var(--clr-accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 100px;
  transition: background 0.2s, transform 0.2s;
  text-decoration: none;
}
.niche-card__cta-btn:hover {
  background: #ea6c0a;
  transform: translateY(-2px);
}

.niche-card__icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  line-height: 1;
}
.niche-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--clr-text);
}
.niche-card__desc {
  font-size: 0.9rem;
  color: var(--clr-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.niche-card__tag {
  display: inline-block;
  background: #f1f5f9;
  color: var(--clr-primary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
}
.niche-card--featured .niche-card__tag {
  background: #dbeafe;
}
.niche-card__tag--link {
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
}
.niche-card__tag--link:hover {
  background: var(--clr-primary);
  color: #fff;
}

/* ========================================
   ADVANTAGES
======================================== */
.advantages {
  background: var(--clr-bg-dark);
  color: #fff;
  padding: var(--section-gap) 0;
}
.advantages .section-title { color: #fff; }
.advantages .section-sub { color: rgba(255,255,255,0.55); }

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.adv-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: background 0.25s;
}
.adv-card:hover { background: rgba(255,255,255,0.09); }

.adv-card__num {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--clr-accent);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.adv-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.adv-card__desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.65;
}

/* ========================================
   REQUIREMENTS
======================================== */
.requirements {
  padding: var(--section-gap) 0;
}

.requirements__inner {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 60px;
  align-items: start;
}

.req-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.req-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.req-item__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: #f1f5f9;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.req-item div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.req-item strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text);
}
.req-item span {
  font-size: 0.88rem;
  color: var(--clr-muted);
  line-height: 1.55;
}

/* CTA box */
.cta-box__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.cta-box__title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.cta-box__desc {
  font-size: 0.9rem;
  color: var(--clr-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

.requirements__cta-box {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: sticky;
  top: 88px;
}

/* ========================================
   CONTACT
======================================== */
.contact {
  background: #f1f5f9;
  padding: var(--section-gap) 0;
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 60px;
  align-items: start;
}

.contact-form {
  background: var(--clr-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text);
}
.optional {
  font-weight: 400;
  color: var(--clr-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--clr-text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  resize: vertical;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.12);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #94a3b8; }

.form-note {
  font-size: 0.78rem;
  color: var(--clr-muted);
  text-align: center;
  margin-top: 12px;
}
.form-status {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
}
.form-status--ok  { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.form-status--err { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* Contact info */
.contact__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-top: 8px;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--clr-card);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.contact-info-item__icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}
.contact-info-item strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 2px;
}
.contact-info-item span {
  font-size: 0.82rem;
  color: var(--clr-muted);
}

.contact-promise {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 16px 18px;
  font-size: 0.85rem;
  color: #166534;
  line-height: 1.5;
}

/* ========================================
   FOOTER
======================================== */
.footer {
  background: var(--clr-bg-dark);
  color: rgba(255,255,255,0.5);
  padding: 36px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer .logo { color: #fff; }

.footer__copy {
  font-size: 0.85rem;
  margin-left: auto;
}

.footer__links {
  display: flex;
  gap: 20px;
}
.footer__links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  transition: color 0.2s;
}
.footer__links a:hover { color: #fff; }

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 900px) {
  .requirements__inner,
  .contact__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .requirements__cta-box { position: static; }
  .nav__links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(248,250,252,0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 0;
    box-shadow: var(--shadow-md);
  }
  .nav__links--open { display: flex; }
  .nav__links a {
    padding: 13px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--clr-border);
    color: var(--clr-text);
  }
  .nav__links a:last-child { border-bottom: none; }
  .nav__links-cta {
    margin-top: 8px;
    color: var(--clr-primary) !important;
    font-weight: 700 !important;
    border-bottom: none !important;
  }
  .burger { display: flex; }
  .nav__cta { display: none; }
}

@media (max-width: 600px) {
  :root { --section-gap: 64px; }

  .nav__cta { display: none; }

  .hero { padding: 72px 0 60px; }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { text-align: center; justify-content: center; }
  .hero__stats { gap: 24px; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px 20px; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__copy { margin-left: 0; }
  .footer__links { flex-wrap: wrap; justify-content: center; }
}