/* ============ Переменные и база ============ */
:root {
  --bg: #0b1220;
  --bg-alt: #101a2e;
  --card: #152238;
  --card-hover: #1a2942;
  --border: #22314d;
  --text: #e8eefc;
  --muted: #9aa8c4;
  --accent: #2f8ff7;
  --accent-strong: #0d83f7;
  --accent-soft: rgba(45, 143, 247, 0.12);
  --radius: 16px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --container: 1140px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 820px;
}

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

/* ============ Кнопки ============ */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #061a33;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(45, 143, 247, 0.35);
}

.btn--outline {
  border-color: var(--border);
  color: var(--text);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 14px 32px;
  font-size: 16px;
}

/* ============ Шапка ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
}

.logo__img {
  height: 32px;
  width: auto;
  border-radius: 6px;
}

.logo__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #061a33;
  font-size: 20px;
  font-weight: 800;
}

.logo__text {
  letter-spacing: -0.02em;
}

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

.nav__link[aria-current="page"] {
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__list {
  display: flex;
  gap: 24px;
}

.nav__link {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav__link:hover {
  color: var(--accent);
}

.nav__close,
.burger {
  display: none;
}

/* ============ Первый экран ============ */
.hero {
  position: relative;
  padding: 96px 0 72px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -300px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(45, 143, 247, 0.18), transparent 65%);
  z-index: 0;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 64px;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid rgba(45, 143, 247, 0.4);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero__title {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero__subtitle {
  color: var(--muted);
  font-size: 17px;
  max-width: 520px;
  margin-bottom: 32px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero__stats {
  display: flex;
  gap: 40px;
}

.hero__stats strong {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.hero__stats span {
  color: var(--muted);
  font-size: 13px;
}

/* Телефон-мокап */
.hero__mock {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone {
  width: 300px;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 36px;
  padding: 16px 14px 20px;
  box-shadow: var(--shadow);
}

.phone__notch {
  width: 100px;
  height: 20px;
  background: var(--bg);
  border-radius: 0 0 15px 15px;
  margin: -16px auto 12px;
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat__msg {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 13px;
  max-width: 85%;
  animation: msg-in 0.5s ease both;
}

.chat__msg--in {
  background: var(--bg-alt);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat__msg--out {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #061a33;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat__done {
  margin-top: 6px;
  padding: 12px 14px;
  background: var(--accent-soft);
  border: 1px dashed rgba(45, 143, 247, 0.5);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12.5px;
  color: var(--accent);
  animation: msg-in 0.5s ease 1.8s both;
}

@keyframes msg-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__floating {
  position: absolute;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow);
  animation: float 5s ease-in-out infinite;
}

.hero__floating::before {
  content: '📈';
  margin-right: 6px;
}

.hero__floating--1 {
  top: 12%;
  right: -8%;
}

.hero__floating--2 {
  bottom: 16%;
  left: -12%;
  animation-delay: 2.5s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ============ Клиенты ============ */
.clients {
  padding: 24px 0 48px;
  border-top: 1px solid var(--border);
}

.clients__title {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.clients__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 48px;
}

.clients__list li {
  color: var(--muted);
  font-weight: 600;
  font-size: 16px;
  opacity: 0.75;
}

/* ============ Секции ============ */
.section {
  padding: 88px 0;
}

.section--alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section__head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section__head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section__tag {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.section__sub {
  color: var(--muted);
  font-size: 16px;
}

.section__note {
  margin-top: 32px;
  text-align: center;
  color: var(--muted);
  font-size: 15px;
}

/* ============ Сетки и карточки ============ */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 143, 247, 0.4);
  background: var(--card-hover);
}

.card__icon {
  font-size: 34px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.card p {
  color: var(--muted);
  font-size: 14.5px;
  margin-bottom: 16px;
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
}

.card__list li {
  padding-left: 24px;
  position: relative;
}

.card__more {
  display: inline-block;
  margin-top: 14px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}

.card__more:hover {
  text-decoration: underline;
}

.card__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.card--cta {
  background: linear-gradient(150deg, rgba(45, 143, 247, 0.14), rgba(13, 131, 247, 0.06));
  border-color: rgba(45, 143, 247, 0.35);
}

.card--cta .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ============ Кейсы ============ */
.case {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.case:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 143, 247, 0.4);
}

.case__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.case__num {
  font-size: 40px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(45, 143, 247, 0.6);
}

.case__tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(45, 143, 247, 0.35);
  padding: 5px 12px;
  border-radius: 100px;
}

.case h3 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 12px;
}

.case p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 24px;
}

.case__metrics {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.case__metrics strong {
  display: block;
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
}

.case__metrics span {
  color: var(--muted);
  font-size: 13px;
}

/* ============ Процесс ============ */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  counter-reset: none;
}

.step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.step__num {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(45, 143, 247, 0.4);
  color: var(--accent);
  font-weight: 800;
  font-size: 15px;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  color: var(--muted);
  font-size: 13.5px;
}

/* ============ Тарифы ============ */
.pricing__card {
  position: relative;
}

.pricing__card .btn {
  margin-top: auto;
  align-self: stretch;
  text-align: center;
}

.pricing__card--hit {
  border-color: rgba(45, 143, 247, 0.6);
  box-shadow: 0 0 0 1px rgba(45, 143, 247, 0.25), var(--shadow);
}

.pricing__badge {
  position: absolute;
  top: -14px;
  left: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #061a33;
  font-size: 12px;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: 100px;
}

.pricing__price {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

/* ============ FAQ ============ */
.faq {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq__item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  transition: border-color 0.2s;
}

.faq__item[open] {
  border-color: rgba(45, 143, 247, 0.45);
}

.faq__item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.2s;
  line-height: 1;
}

.faq__item[open] summary::after {
  transform: rotate(45deg);
}

.faq__item p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14.5px;
}

/* ============ Портфолио ============ */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.filter-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

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

.portfolio-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
}

.portfolio-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.portfolio-card__media {
  aspect-ratio: 16 / 9;
  background: var(--bg-alt);
  overflow: hidden;
}

.portfolio-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-card__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.portfolio-card__tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
}

.portfolio-card__body h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.portfolio-card__body p {
  color: var(--muted);
  font-size: 14.5px;
  flex: 1;
}

.portfolio-card__link {
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}

.portfolio-card__link:hover {
  text-decoration: underline;
}

.portfolio-empty {
  color: var(--muted);
  text-align: center;
  padding: 24px 0;
}

/* ============ МойСклад заглушка ============ */
.stub {
  padding-top: 72px;
  min-height: calc(100vh - 200px);
}

.stub-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stub-card__badge {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

.stub-card h2 {
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.02em;
}

.stub-card > p {
  color: var(--muted);
}

.stub-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* ============ Контакты ============ */
.section--contact {
  background: radial-gradient(circle at 80% 20%, rgba(45, 143, 247, 0.14), transparent 55%), var(--bg-alt);
}

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

.contact--form-only {
  grid-template-columns: 1fr;
  max-width: 560px;
  margin: 0 auto;
  gap: 28px;
}

.contact__intro {
  text-align: center;
}

.contact__title {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.contact__text {
  color: var(--muted);
  margin-bottom: 0;
}

.contact__form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field span {
  font-size: 13.5px;
  font-weight: 600;
}

.field input,
.field textarea {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.2s;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field input::placeholder,
.field textarea::placeholder {
  color: #5c6b8a;
}

.contact__agree {
  font-size: 12.5px;
  color: var(--muted);
}

.contact__success {
  color: var(--accent);
  font-weight: 600;
  font-size: 15px;
}

.contact__error {
  color: #ff6b6b;
  font-weight: 600;
  font-size: 14px;
}

.smart-captcha {
  min-height: 100px;
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

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

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

.footer__brand p {
  color: var(--muted);
  font-size: 13.5px;
  max-width: 280px;
  margin-top: 12px;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__link {
  color: var(--muted);
  font-size: 14px;
}

.footer__link:hover {
  color: var(--accent);
}

.footer__meta {
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

/* ============ Адаптив: планшет и мобильные ============ */
@media (max-width: 992px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero__mock {
    order: 2;
  }

  .hero__floating--1 {
    right: 4%;
  }

  .hero__floating--2 {
    left: 4%;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .header__inner {
    height: 64px;
  }

  /* Бургер-меню */
  .burger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
  }

  .burger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.25s, opacity 0.25s;
  }

  .burger.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .burger.is-open span:nth-child(2) {
    opacity: 0;
  }

  .burger.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav {
    position: fixed;
    inset: 0;
    background: rgba(11, 18, 32, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: 40px;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }

  .nav.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    align-items: center;
    gap: 28px;
  }

  .nav__link {
    font-size: 20px;
  }

  .nav__close {
    display: block;
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    color: var(--text);
    font-size: 40px;
    line-height: 1;
    cursor: pointer;
  }

  .hero {
    padding: 56px 0 48px;
  }

  .hero__stats {
    gap: 28px;
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
    gap: 24px;
  }

  .footer__meta {
    text-align: left;
  }

  .hero__floating {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .hero__stats {
    flex-wrap: wrap;
    gap: 20px;
  }

  .case {
    padding: 24px;
  }

  .contact__form {
    padding: 24px;
  }
}