/* ==========================================================================
   Variables & base
   ========================================================================== */

:root {
  --color-header-bg: #000000;
  --color-accent: #ffd700;
  --color-text-dark: #1a1a1a;
  --color-bg-light: #f5f5f5;
  --color-white: #ffffff;
  --color-overlay: rgba(0, 0, 0, 0.55);
  --font-family: "Montserrat", "Roboto", "Inter", sans-serif;
  --container-max: 1200px;
  --container-padding: 16px;
  --header-height: 72px;
  --radius-btn: 6px;
  --transition: 0.25s ease;
  --shadow-header: 0 2px 12px rgba(0, 0, 0, 0.35);
  --z-header: 100;
  --z-hero-content: 2;
  --z-hero-overlay: 1;
  --z-hero-bg: 0;
  --section-padding-y: 64px;
  --radius-card: 8px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
  --z-modal: 200;
  --z-toast: 300;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
}

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

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

.nobr {
  white-space: nowrap;
}

/* ==========================================================================
   Skip link
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 200;
  padding: 8px 16px;
  background: var(--color-accent);
  color: var(--color-header-bg);
  font-weight: 600;
  border-radius: var(--radius-btn);
}

.skip-link:focus {
  top: 8px;
}

/* ==========================================================================
   Container
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: background-color var(--transition), opacity var(--transition),
    box-shadow var(--transition), transform var(--transition);
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-header-bg);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: #e6c200;
  box-shadow: 0 4px 16px rgba(255, 215, 0, 0.35);
}

.btn--header {
  background-color: var(--color-accent);
  color: var(--color-header-bg);
  padding: 10px 20px;
  font-size: 14px;
}

.btn--header:hover,
.btn--header:focus-visible {
  opacity: 0.88;
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: var(--color-header-bg);
  box-shadow: var(--shadow-header);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-height);
}

.header__logo {
  flex-shrink: 0;
  font-size: clamp(15px, 3.5vw, 20px);
  font-weight: 700;
  color: var(--color-accent);
  transition: opacity var(--transition);
}

.header__logo:hover,
.header__logo:focus-visible {
  opacity: 0.85;
}

.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-header) + 1);
}

.header__burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.header__burger[aria-expanded="true"] .header__burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__burger[aria-expanded="true"] .header__burger-line:nth-child(2) {
  opacity: 0;
}

.header__burger[aria-expanded="true"] .header__burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header__menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 8px;
}

.header__link {
  color: var(--color-accent);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 4px;
  transition: opacity var(--transition);
  text-decoration: underline transparent;
  text-underline-offset: 4px;
  transition: opacity var(--transition), text-decoration-color var(--transition);
}

.header__link:hover,
.header__link:focus-visible {
  opacity: 0.75;
  text-decoration-color: var(--color-accent);
}

.header__phone {
  display: none;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  transition: opacity var(--transition);
}

.header__phone:hover,
.header__phone:focus-visible {
  opacity: 0.75;
}

.header__cta {
  display: none;
}

/* Mobile menu open */
.header__nav--open {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 24px var(--container-padding) 32px;
  background-color: var(--color-header-bg);
  overflow-y: auto;
}

.header__nav--open .header__menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.header__nav--open .header__link {
  font-size: 18px;
  padding: 12px 0;
}

.header__nav--open .header__phone {
  display: flex;
  margin-top: 16px;
  font-size: 18px;
}

.header__nav--open .header__cta {
  display: inline-flex;
  margin-top: 20px;
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 16px;
}

body.menu-open,
body.modal-open {
  overflow: hidden;
}

@media (min-width: 1024px) {
  .header__burger {
    display: none;
  }

  .header__nav {
    flex: 1;
    justify-content: flex-end;
  }

  .header__menu {
    display: flex;
    flex-direction: row;
    align-items: center;
    margin-right: auto;
    margin-left: 32px;
  }

  .header__phone {
    display: flex;
  }

  .header__cta {
    display: inline-flex;
  }

  .header__nav--open {
    position: static;
    inset: auto;
    flex-direction: row;
    padding: 0;
    overflow: visible;
  }

  .header__nav--open .header__menu {
    flex-direction: row;
  }

  .header__nav--open .header__link {
    font-size: 15px;
    padding: 8px 4px;
  }

  .header__nav--open .header__phone {
    margin-top: 0;
    font-size: 14px;
  }

  .header__nav--open .header__cta {
    margin-top: 0;
    width: auto;
    padding: 10px 20px;
    font-size: 14px;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100dvh - var(--header-height));
  overflow: visible;
  scroll-margin-top: var(--header-height);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: var(--z-hero-bg);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url("../assets/img/New.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  will-change: transform;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: var(--z-hero-overlay);
  background-color: var(--color-overlay);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: var(--z-hero-content);
  padding-top: 32px;
  padding-bottom: 32px;
  max-width: 720px;
}

.hero__title {
  margin: 0 0 20px;
  font-size: clamp(26px, 5vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-white);
}

.hero__subtitle {
  margin: 0 0 32px;
  font-size: clamp(15px, 2.5vw, 18px);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.92);
  max-width: 65ch;
}

.hero__btn {
  width: 100%;
}

@media (min-width: 480px) {
  .hero__btn {
    width: auto;
  }
}

@media (min-width: 768px) {
  :root {
    --container-padding: 24px;
  }

  .hero__content {
    transform: translateX(-150px);
  }
}

@media (max-width: 767px) {
  .hero__content {
    transform: none;
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero__bg {
    will-change: auto;
  }
}

/* ==========================================================================
   Sections (common)
   ========================================================================== */

.section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
  scroll-margin-top: var(--header-height);
}

.section--alt {
  background-color: var(--color-white);
}

.section__title {
  margin: 0 0 32px;
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-dark);
}

.section__footer {
  margin-top: 40px;
  text-align: center;
}

@media (min-width: 768px) {
  :root {
    --section-padding-y: 80px;
  }

  .section__footer {
    text-align: left;
  }
}

/* ==========================================================================
   About
   ========================================================================== */

.about__body {
  max-width: 65ch;
}

.about__text {
  margin: 0 0 28px;
  font-size: 17px;
  line-height: 1.65;
}

/* ==========================================================================
   Services
   ========================================================================== */

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.services__card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--color-bg-light);
  border: 2px solid transparent;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition), transform var(--transition);
}

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

.services__card-title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
}

.services__card-text {
  margin: 0;
  flex: 1;
  font-size: 15px;
  line-height: 1.55;
  color: #444;
}

@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .services__card:nth-child(4),
  .services__card:nth-child(5) {
    grid-column: span 1;
  }
}

/* ==========================================================================
   Advantages
   ========================================================================== */

.advantages__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.advantages__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.advantages__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  font-size: 22px;
  color: var(--color-header-bg);
  background-color: var(--color-accent);
  border-radius: 50%;
}

.advantages__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
}

.advantages__text {
  margin: 0;
  font-size: 15px;
  color: #444;
}

@media (min-width: 768px) {
  .advantages__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

/* ==========================================================================
   Steps
   ========================================================================== */

.steps__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.steps__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-light);
  border-radius: var(--radius-card);
  border-left: 4px solid var(--color-accent);
}

.steps__num {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-header-bg);
  background-color: var(--color-accent);
  border-radius: 50%;
}

.steps__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.5;
}

@media (min-width: 768px) {
  .steps__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .steps__list {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps__item:nth-child(7) {
    grid-column: 2;
  }
}

/* ==========================================================================
   Gallery
   ========================================================================== */

.gallery__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.gallery__item {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.gallery__img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.gallery__caption {
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  background: var(--color-white);
}

@media (min-width: 768px) {
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================================================
   Contacts & Form
   ========================================================================== */

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

.contacts__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contacts__item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 16px;
  line-height: 1.5;
}

.contacts__label {
  flex-shrink: 0;
  font-size: 20px;
}

.contacts__item a {
  color: var(--color-text-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

.contacts__item a:hover,
.contacts__item a:focus-visible {
  color: #8a7200;
}

.form__field {
  margin-bottom: 20px;
}

.form__label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
}

.form__required {
  color: #c00;
}

.form__input {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.4;
  color: var(--color-text-dark);
  background: var(--color-white);
  border: 2px solid #ddd;
  border-radius: var(--radius-btn);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.35);
}

.form__input[aria-invalid="true"] {
  border-color: #c00;
}

.form__textarea {
  min-height: 120px;
  resize: vertical;
}

.form__error {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: #c00;
  min-height: 1.2em;
}

.form__submit {
  width: 100%;
}

.form__hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: #666;
}

.form__consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}

.form__checkbox {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form__consent-label {
  font-size: 13px;
  line-height: 1.5;
  color: #444;
  cursor: pointer;
}

.form__consent-label a {
  color: var(--color-text-dark);
  font-weight: 600;
  text-decoration: underline;
}

.form__error--consent {
  display: block;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .contacts__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .form__submit {
    width: auto;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: 40px 0;
  background-color: var(--color-header-bg);
  color: var(--color-accent);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
}

.footer__copy {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 24px;
}

.footer__link {
  font-size: 14px;
  transition: opacity var(--transition);
}

.footer__link:hover,
.footer__link:focus-visible {
  opacity: 0.75;
  text-decoration: underline;
}

.footer__disclaimer {
  margin: 0;
  font-size: 12px;
  opacity: 0.75;
  line-height: 1.5;
}

@media (min-width: 768px) {
  .footer__inner {
    text-align: left;
  }
}

/* ==========================================================================
   Modal
   ========================================================================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  visibility: hidden;
  opacity: 0;
  transition: visibility var(--transition), opacity var(--transition);
}

.modal--open {
  visibility: visible;
  opacity: 1;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  cursor: pointer;
}

.modal__dialog {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px 24px 24px;
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
}

.modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  font-size: 28px;
  line-height: 1;
  color: var(--color-text-dark);
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-btn);
}

.modal__close:hover,
.modal__close:focus-visible {
  background: var(--color-bg-light);
}

.modal__title {
  margin: 0 0 24px;
  padding-right: 40px;
  font-size: 22px;
  font-weight: 700;
}

/* ==========================================================================
   Toast
   ========================================================================== */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  z-index: var(--z-toast);
  max-width: calc(100% - 32px);
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-header-bg);
  background: var(--color-accent);
  border-radius: var(--radius-card);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  transform: translateX(-50%) translateY(120%);
  transition: transform 0.35s ease;
}

.toast--visible {
  transform: translateX(-50%) translateY(0);
}

.toast--error {
  color: var(--color-white);
  background: #b91c1c;
}

.form__submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* ==========================================================================
   Privacy page
   ========================================================================== */

.page-privacy {
  padding: calc(var(--header-height) + 40px) 0 80px;
}

.page-privacy__title {
  margin: 0 0 24px;
  font-size: 28px;
}

.page-privacy__text {
  max-width: 65ch;
  line-height: 1.65;
}

.page-privacy__back {
  display: inline-block;
  margin-top: 32px;
  font-weight: 600;
  color: var(--color-text-dark);
  text-decoration: underline;
}