:root {
  --color-primary: #d9531e;
  --color-primary-hover: #b84114;
  --color-dark: #1f2421;
  --color-light: #f4f6f8;
  --color-white: #ffffff;
  --color-text: #2b2d42;
  --header-height: 75px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.6;
  padding-top: var(--header-height);
}

body.no-scroll {
  overflow: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--color-dark);
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--color-primary);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: 1.8rem;
}

.nav__link {
  text-decoration: none;
  color: var(--color-dark);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

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

.header__contacts {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.header__phone {
  text-decoration: none;
  color: var(--color-dark);
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.header__phone:hover {
  color: var(--color-primary-hover);
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  text-align: center;
  font-size: 0.95rem;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
}

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

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

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

.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  z-index: 1001;
}

.burger span {
  width: 26px;
  height: 3px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.hero {
  min-height: calc(100vh - var(--header-height));
  background:
    linear-gradient(rgba(15, 20, 25, 0.65), rgba(15, 20, 25, 0.65)),
    url("../img/hero-bg.webp") center/cover no-repeat;
  display: flex;
  align-items: center;
  color: var(--color-white);
}

.hero__content {
  max-width: 680px;
}

.hero__title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: 1.2rem;
  font-weight: 800;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  margin-bottom: 2rem;
  opacity: 0.92;
  font-weight: 400;
}

.section {
  padding: 5rem 0;
  scroll-margin-top: var(--header-height);
}

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

.section__title {
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 2.8rem;
  font-weight: 700;
}

.section__title--light {
  color: var(--color-white);
}

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

.card {
  padding: 2rem;
  background: var(--color-white);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.card__icon {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 1rem;
  width: 48px;
  height: 48px;
  color: var(--color-primary);
}

.card h3 {
  margin-bottom: 0.8rem;
  color: var(--color-dark);
}

.services__note {
  margin: 3.5rem auto 0;
  padding: 1.5rem 2rem;
  background-color: var(--color-white);
  border-left: 5px solid var(--color-primary);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 850px;
}

.services__note-icon {
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.services__note-content p {
  margin: 0;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.6;
}

.services__note-content strong {
  color: var(--color-dark);
  font-weight: 700;
}

.feedback__wrapper,
.callback__wrapper {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;
}

.feedback__subtitle {
  margin-bottom: 1.8rem;
  opacity: 0.85;
}

.form__group {
  margin-bottom: 1.1rem;
  text-align: left;
}

.form__label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  font-size: 0.95rem;
}

.form__input {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.bg-dark {
  background-color: #1e293b;
  color: #ffffff;
}

.text-white {
  color: #ffffff !important;
}

.text-white-70 {
  color: rgba(255, 255, 255, 0.7) !important;
}

.form--dark .form__label {
  color: #f1f5f9;
}

.form--dark .form__input {
  background-color: #0f172a;
  border: 1px solid #334155;
  color: #ffffff;
}

.form--dark .form__input::placeholder {
  color: #64748b;
}

.form--dark .form__input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form__textarea {
  resize: none;
  min-height: 100px;
  font-family: inherit;
  overflow-y: auto;
}

.textarea-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.btn-attach {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  background: transparent;
  border: 1px dashed #475569;
  color: #94a3b8;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.btn-attach:hover {
  border-color: #3b82f6;
  color: #3b82f6;
  background-color: rgba(59, 130, 246, 0.05);
}

.file-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.preview-item {
  position: relative;
  width: 70px;
  height: 70px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid #334155;
  background-color: #0f172a;
}

.preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-remove {
  position: absolute;
  top: 2px;
  right: 2px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  border: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-remove:hover {
  background: #ef4444;
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.portfolio__card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background-color: #1e293b;
  aspect-ratio: 4 / 3;
  border: 1px solid #334155;
  cursor: pointer;
}

.portfolio__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.portfolio__card:hover .portfolio__img {
  transform: scale(1.05);
}

.portfolio__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.9), transparent);
  color: #ffffff;
  padding: 1rem 0.8rem 0.8rem;
  font-size: 0.95rem;
  font-weight: 500;
  text-align: center;
}

.portfolio-slider {
  padding-bottom: 3rem !important;
  position: relative;
}

.swiper-button-next,
.swiper-button-prev {
  color: #3b82f6 !important;
}

.swiper-pagination-bullet-active {
  background: #3b82f6 !important;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.modal__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
}

.modal__container {
  position: relative;
  z-index: 2001;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal.open .modal__container {
  transform: scale(1);
}

.modal__container--lightbox {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-radius: 8px;
  overflow: hidden;
}

.modal__img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  display: block;
}

.modal__caption {
  margin-top: 0.75rem;
  color: #f1f5f9;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
}

.modal__close {
  position: absolute;
  top: 12px;
  right: 15px;
  z-index: 2002;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease, transform 0.2s ease;
}

.modal__close:hover {
  color: var(--color-primary);
  transform: scale(1.1);
}

.modal__nav {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 70px;
  z-index: 2001;
  border: none;
  background: rgba(0, 0, 0, 0.2);
  color: var(--color-primary);
  font-size: 2.5rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  user-select: none;
  transition: background 0.3s ease, color 0.3s ease;
}

.modal__nav--prev {
  left: 0;
}

.modal__nav--next {
  right: 0;
}

.modal__nav:hover {
  background: rgba(0, 0, 0, 0.6);
  color: #ff6b35;
}

.quote-modal__container {
  width: 100%;
  max-width: 520px;
  padding: 2.5rem 2rem;
  border-radius: 12px;
  background-color: #1e293b;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.quote-modal__container .modal__close {
  top: 15px;
  right: 20px;
  color: #94a3b8;
}

.quote-modal__container .modal__close:hover {
  color: var(--color-primary);
}

.quote-modal__container::-webkit-scrollbar {
  width: 6px;
}

.quote-modal__container::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
}

.quote-modal__container::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
}

.bg-light {
  background-color: var(--color-light);
}

.step-card {
  position: relative;
  text-align: center;
  padding-top: 3.5rem;
  margin-top: 25px;
}

.step-card__number {
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 56px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 5px solid var(--color-light);
  box-shadow: 0 4px 10px rgba(217, 83, 30, 0.25);
  transition: transform 0.3s ease;
}

.step-card:hover .step-card__number {
  transform: translateX(-50%) scale(1.1);
}

.footer {
  padding: 1.8rem 0;
  text-align: center;
  background-color: #121413;
  color: #888;
  font-size: 0.9rem;
}

.mobile-logo-btn {
  display: none;
}

@media (min-width: 1100px) {
  .services__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: #ffffff;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
  }

  .header__contacts .btn {
    display: none;
  }

  .burger {
    display: flex;
  }

  .header__phone {
    font-size: 0.95rem;
  }

  .modal__nav {
    width: 48px;
    font-size: 1.8rem;
    background: rgba(0, 0, 0, 0.35);
  }

  .quote-modal__container {
    padding: 2rem 1.2rem;
  }

  .services__note {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
    gap: 1rem;
    border-left: none;
    border-top: 5px solid var(--color-primary);
  }

  .services__grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .header--scrolled .logo {
    display: none !important;
  }

  .header--scrolled .mobile-logo-btn {
    display: inline-block;
    padding: 0.5rem 1.1rem;
  }
}