:root {
  --bg-page: #f7f7f9;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-sub: #6b7280;
  --primary: #0b7aff;
  --primary-dark: #0754b8;
  --border-soft: #e5e7eb;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.08);
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
}

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

/* HEADER */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.header-inner {
  width: 100%;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-img {
  height: 72px;
  width: auto;
  display: block;
}

nav {
  display: flex;
  gap: 18px;
  font-size: 20px;
}

nav a {
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  color: var(--text-sub);
}

nav a:hover {
  background: #e5edff;
  color: var(--text-main);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.header-contact {
  font-size: 20px;
  color: var(--text-sub);
  white-space: nowrap;
}

.lang-switch {
  display: flex;
  gap: 6px;
}

.lang-btn {
  border: none;
  background: transparent;
  font-size: 16px;
  padding: 4px 8px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-sub);
}

.lang-btn.active {
  background: #e5edff;
  color: #1d4ed8;
  font-weight: 600;
}

/* Burger */

.burger {
  display: none;
  width: 28px;
  height: 24px;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}

.burger span {
  display: block;
  height: 3px;
  border-radius: 999px;
  background: #111827;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.burger.open span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}
.burger.open span:nth-child(2) {
  opacity: 0;
}
.burger.open span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* MOBILE MENU */

.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(230, 230, 230, 0.97);
  color: #111111;
  display: none;
  flex-direction: column;
  padding: 80px 24px 24px;
  z-index: 35;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-size: 22px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  color: #111111;
}

.mobile-close {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 44px;
  font-weight: 300;
  color: #111;
  cursor: pointer;
  z-index: 50;
}

.mobile-lang {
  margin-top: 24px;
  display: flex;
  gap: 8px;
}

.mobile-lang button {
  border: 1px solid #444;
  background: #fff;
  color: #111;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 16px;
  cursor: pointer;
}

.mobile-lang button.active {
  background: #1d4ed8;
  color: #fff;
  border-color: #1d4ed8;
}

@media (max-width: 900px) {
  nav {
    display: none;
  }
  .burger {
    display: flex;
  }
  .header-inner {
    padding: 10px 16px;
  }
  .header-contact {
    display: none;
  }
}

/* =========================
   HERO SLIDER (упорядочено)
   ========================= */

.hero-slider {
  position: relative;
  overflow: hidden;
  margin-top: 72px;
}

/* Слайды по умолчанию (desktop / tablet) */
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  /* показываем нижнюю часть — город */
  background-position: center bottom;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

/* Градиент поверх баннера */
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%,
      rgba(255, 255, 255, 0.85),
      rgba(255, 255, 255, 0.2) 55%,
      rgba(255, 255, 255, 0) 75%);
  pointer-events: none;
}

/* Контент по центру hero */
.hero-center {
  position: absolute;
  inset: 0;
  z-index: 10;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* Десктоп/планшет: фиксируем пропорции блока через ширину экрана */
@media (min-width: 768px) {
  .hero-slider {
    height: calc(100vw / 1.5); /* твоя формула */
    min-height: 520px;
  /*  max-height: 900px; */        /* чтобы на очень больших мониторах не раздувало */
  }

  .hero-subtitle {
    font-size: 20px;
  }

  .btn-primary {
    width: auto;
  }
}

/* Мобильный (<768px): картинка сверху, текст под ней */
@media (max-width: 767px) {
  .hero-slider {
    margin-top: 64px;
    height: auto;
    min-height: 0;
  }

  /* только активный слайд виден, блок даёт высоту за счёт padding-top */
  .hero-slide {
    position: relative;
    inset: auto;
    display: none;
    padding-top: 66.666%; /* 3:2 — то же, что 100vw / 1.5 */
  }

  .hero-slide.active {
    display: block;
    opacity: 1;
  }

  /* убираем градиент */
  .hero-overlay {
    display: none;
  }

  /* текст становится обычным блоком под баннером */
  .hero-center {
    position: static;
    height: auto;
    max-width: 100%;
    padding: 24px 16px 40px;
    display: block;
    text-align: center;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .btn-primary {
    width: 100%;
  }
}

/* Текст и кнопка в hero */

.hero-content {
  max-width: 820px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(28px, 4.3vw, 46px);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: #0b2164;
}

.hero-subtitle {
  font-size: 20px;
  font-weight: 500;
  color: var(--text-sub);
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  justify-content: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 40px;
  border-radius: var(--radius-pill);
  border: none;
  background: linear-gradient(135deg, #0b7aff, #2563eb);
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.45);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary::after {
  content: "→";
  margin-left: 10px;
  font-size: 18px;
  transition: transform 0.2s ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0754b8, #1d4ed8);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.55);
}

.btn-primary:hover::after {
  transform: translateX(3px);
}

/* ===== остальная страница ===== */

main {
  background: var(--bg-page);
}

section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px;
}

h2 {
  font-size: 30px;
  margin-bottom: 14px;
}

.section-sub {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 34px;
  max-width: 100%;
}

/* CARDS */

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.cards-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

@media (max-width: 960px) {
  .cards-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  section {
    padding: 60px 16px;
  }
  .cards-3,
  .cards-2 {
    grid-template-columns: minmax(0, 1fr);
  }
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-soft);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.card-text {
  font-size: 16px;
  color: var(--text-sub);
}

.card-tag {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #2563eb;
  margin-bottom: 8px;
}

/* PROCESS */

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

@media (max-width: 1024px) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .steps {
    grid-template-columns: minmax(0, 1fr);
  }
}

.step {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 20px 18px 22px;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
}

.step-number {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: #e0ecff;
  color: #1d4ed8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-text {
  font-size: 16px;
  color: var(--text-sub);
}

/* CITY CARDS */

.city-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 22px 22px 24px;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
}

.city-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.city-caption {
  font-size: 16px;
  color: var(--text-sub);
  margin-bottom: 12px;
}

.city-list {
  font-size: 16px;
  color: var(--text-sub);
}

/* CONTACT */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 26px;
  align-items: flex-start;
}

@media (max-width: 860px) {
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

form {
  margin: 0;
}

.form-card {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 24px 22px 26px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-soft);
}

.form-row {
  margin-bottom: 14px;
}

.form-row.is-hidden {
  display: none;
}

.field-error {
  min-height: 18px;
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.3;
  color: #b91c1c;
}

.field-hint {
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.3;
  color: var(--text-sub);
}

label {
  display: block;
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 4px;
}

input,
select,
textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid #d1d5db;
  background: #ffffff;
  font-family: inherit;
  font-size: 16px;
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="tel"],
input[id^="telegram"] {
  direction: ltr;
  text-align: left;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.35);
}

input.is-invalid,
select.is-invalid,
textarea.is-invalid {
  border-color: #dc2626;
  box-shadow: 0 0 0 1px rgba(220, 38, 38, 0.22);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.form-footnote {
  margin-top: 10px;
  font-size: 14px;
  color: var(--text-sub);
}

.form-status {
  min-height: 22px;
  margin: 2px 0 14px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--text-sub);
}

.form-status.success {
  color: #047857;
}

.form-status.error {
  color: #b91c1c;
}

button[disabled] {
  cursor: wait;
  opacity: 0.72;
}

.contacts-card {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 24px 22px 26px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-soft);
  font-size: 16px;
  color: var(--text-sub);
}

.contacts-card strong {
  color: var(--text-main);
}

.contacts-list div + div {
  margin-top: 8px;
}

.contact-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.pill {
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid #d1d5db;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  background: #ffffff;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.pill:hover {
  background: #eef2ff;
  border-color: #c7d2fe;
  transform: translateY(-1px);
}

footer {
  text-align: center;
  padding: 18px 12px 22px;
  font-size: 14px;
  color: var(--text-sub);
  border-top: 1px solid var(--border-soft);
  background: #ffffff;
}

/* LANGUAGE BLOCKS */

.lang-block[data-lang="fa"] {
  display: none;
}

.fa-wrapper {
  direction: rtl;
}

.fa-wrapper ul {
  padding-right: 20px;
}

.fa-wrapper .section-sub,
.fa-wrapper .card-text,
.fa-wrapper .city-list,
.fa-wrapper .city-caption,
.fa-wrapper .step-text {
  text-align: right;
}

.hero-content.fa-wrapper {
  text-align: center;
}