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

:root {
  --bg:       #0d0f14;
  --bg2:      #13161e;
  --bg3:      #1a1e28;
  --border:   #252a38;
  --accent:   #6c63ff;
  --accent2:  #00d4aa;
  --text:     #e8eaf0;
  --text2:    #9198b0;
  --text3:    #5c6380;
  --radius:   12px;
  --radius-lg:20px;
  --shadow:   0 4px 32px rgba(0,0,0,.45);
  --font:     'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

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

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

/* ===== CONTAINER ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== SECTION ===== */
.section { padding: 96px 0; }

.section__head { text-align: center; margin-bottom: 60px; }

.section__label {
  display: inline-block;
  color: var(--accent);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section__desc {
  color: var(--text2);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity .2s, transform .15s, background .2s;
  background: var(--accent);
  color: #fff;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--sm  { padding: 8px 20px; font-size: .85rem; }
.btn--lg  { padding: 15px 36px; font-size: 1rem; }
.btn--full{ width: 100%; }

.btn--ghost {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); opacity: 1; }

.btn--accent {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
}
.btn--accent:hover { opacity: .88; }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,20,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 68px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -.02em;
  white-space: nowrap;
}
.logo__rozum { color: var(--text); }
.logo__hub   { color: var(--accent); }

.nav {
  display: flex;
  gap: 32px;
  margin-left: auto;
}
.nav a {
  color: var(--text2);
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav a:hover { color: var(--text); }

.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 0;
}

.header__phone {
  display: flex;
  align-items: center;
  color: var(--text2);
  font-size: .85rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color .2s;
}
.header__phone:hover { color: var(--accent); }

.mobile-menu__phone {
  color: var(--accent) !important;
  font-weight: 600 !important;
}

.lang-toggle {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: .05em;
  transition: color .2s, border-color .2s;
}
.lang-toggle:hover { color: var(--accent); border-color: var(--accent); }

/* ===== BURGER ===== */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
}
.mobile-menu a {
  color: var(--text2);
  font-size: 1rem;
  font-weight: 500;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border-bottom: none; margin-top: 12px; }
.mobile-menu.open { display: flex; }

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 96px;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108,99,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,.06) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(108,99,255,.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-block;
  background: rgba(108,99,255,.12);
  border: 1px solid rgba(108,99,255,.3);
  color: var(--accent);
  font-size: .82rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: .04em;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  color: var(--text2);
  font-size: clamp(.95rem, 1.5vw, 1.15rem);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat { text-align: center; }
.stat__num {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -.02em;
}
.stat__label {
  display: block;
  font-size: .78rem;
  color: var(--text3);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

/* ===== SERVICES ===== */
.services { background: var(--bg2); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(108,99,255,.18);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  background: rgba(108,99,255,.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}
.service-card__icon svg { width: 24px; height: 24px; }

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}

.service-card p {
  color: var(--text2);
  font-size: .88rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.service-card__tags li {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text3);
  font-size: .73rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: .02em;
}

/* ===== CTA BAND ===== */
.cta-band {
  background: linear-gradient(135deg, rgba(108,99,255,.12) 0%, rgba(0,212,170,.08) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 72px 0;
}

.cta-band__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.cta-band__text h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-band__text p { color: var(--text2); font-size: .95rem; }

.mini-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== FORM STYLES ===== */
input, textarea, select {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: .9rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color .2s;
  resize: vertical;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
input::placeholder, textarea::placeholder { color: var(--text3); }
select { appearance: none; }
select option { background: var(--bg2); color: var(--text); }

.form__status {
  font-size: .83rem;
  margin-top: 4px;
  min-height: 1.2em;
}
.form__status.ok  { color: var(--accent2); }
.form__status.err { color: #ff6b6b; }

/* ===== HOW WE WORK ===== */
.how { background: var(--bg2); }

.how__steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 8px;
}

.step {
  flex: 1;
  min-width: 180px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}

.step__num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  opacity: .5;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.step h3 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step p { color: var(--text2); font-size: .85rem; line-height: 1.6; }

.step__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.4rem;
  padding: 0 16px;
  padding-top: 28px;
  flex-shrink: 0;
}

/* ===== WHY ===== */
.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color .25s, transform .2s;
}
.why-card:hover { border-color: var(--accent2); transform: translateY(-3px); }

.why-card__icon { font-size: 2rem; margin-bottom: 16px; }
.why-card h3 { font-size: .95rem; font-weight: 700; margin-bottom: 10px; }
.why-card p  { color: var(--text2); font-size: .85rem; line-height: 1.6; }

/* ===== CONTACT ===== */
.contact { background: var(--bg2); }

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}

.contact__info .section__label { margin-bottom: 12px; }
.contact__info .section__title { text-align: left; font-size: clamp(1.5rem, 2.5vw, 2rem); margin-bottom: 16px; }
.contact__info > p { color: var(--text2); font-size: .95rem; margin-bottom: 32px; }

.contact__details { display: flex; flex-direction: column; gap: 16px; }

.contact__item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text2);
  font-size: .93rem;
}
.contact__item svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--accent); }
.contact__item a:hover { color: var(--accent); transition: color .2s; }

.contact-form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  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: 8px;
}

.form-group label {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text2);
  letter-spacing: .02em;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.footer__brand p {
  color: var(--text3);
  font-size: .82rem;
  margin-top: 6px;
}

.footer__phone {
  display: inline-block;
  color: var(--text2);
  font-size: .85rem;
  margin-top: 10px;
  transition: color .2s;
}
.footer__phone:hover { color: var(--accent); }

.footer__links {
  display: flex;
  gap: 28px;
}
.footer__links a {
  color: var(--text3);
  font-size: .85rem;
  transition: color .2s;
}
.footer__links a:hover { color: var(--text); }

.footer__copy { text-align: right; color: var(--text3); font-size: .8rem; }
.footer__copy p + p { margin-top: 4px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .why__grid      { grid-template-columns: repeat(2, 1fr); }
  .contact__inner { grid-template-columns: 1fr; gap: 48px; }
  .cta-band__inner{ grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav, .header__actions .btn, .header__phone { display: none; }
  .burger { display: flex; }
  .header__actions { gap: 8px; }
  .header__actions .btn { display: none; }

  .hero { padding: 72px 0 64px; }
  .hero__stats { gap: 28px; }

  .services__grid { grid-template-columns: 1fr; }
  .why__grid      { grid-template-columns: 1fr; }

  .how__steps {
    flex-direction: column;
    overflow: visible;
  }
  .step__arrow {
    transform: rotate(90deg);
    padding: 0;
    align-self: center;
    padding-bottom: 8px;
  }
  .step { width: 100%; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__copy  { text-align: left; }

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

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; align-items: center; }
  .hero__cta .btn { width: 100%; max-width: 320px; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__badge, .hero__title, .hero__sub, .hero__cta, .hero__stats {
  animation: fadeUp .7s ease both;
}
.hero__title { animation-delay: .08s; }
.hero__sub   { animation-delay: .16s; }
.hero__cta   { animation-delay: .24s; }
.hero__stats { animation-delay: .34s; }