/* ===== Design tokens ===== */
:root {
  --color-bg: #EEF3F6;
  --color-surface: #FFFFFF;
  --color-accent: #E67E22;
  --color-accent-2: #244A66;
  --color-muted: #7A8B99;
  --color-light: #DCE5EB;
  --color-dark: #1A2A36;
  --color-overlay: rgba(36, 74, 102, 0.82);

  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Inter", system-ui, sans-serif;

  --radius-button: 0 1.75rem 0 1.75rem;
  --radius-card: 0 1.25rem 0 1.25rem;
  --shadow-sm: 0 4px 16px rgba(36, 74, 102, 0.06);
  --shadow-md: 0 12px 40px rgba(36, 74, 102, 0.10);
  --shadow-lg: 0 20px 60px rgba(36, 74, 102, 0.14);

  --transition-base: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  --container: 1280px;
}

/* ===== Reset & base ===== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--color-dark);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent-2);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover,
a:focus {
  color: var(--color-accent);
}

address {
  font-style: normal;
}

h1, h2, h3, h4, p {
  margin: 0 0 1rem;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-accent-2);
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ===== Layout ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
}

.section {
  position: relative;
  padding: 6rem 0;
  overflow: hidden;
}

.section__header {
  max-width: 760px;
  margin-bottom: 3rem;
}

.section__eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
}

.section__lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 640px;
}

.section--clip {
  clip-path: polygon(0 0, 100% 3vw, 100% 100%, 0 calc(100% - 3vw));
}

.section--accent-strip {
  border-left: 10px solid var(--color-accent);
}

.section--blue {
  background-color: var(--color-accent-2);
  color: #F4F8FA;
}

.section--blue .section__title,
.section--blue h2,
.section--blue h3 {
  color: #FFFFFF;
}

.section--blue .section__lead,
.section--blue p {
  color: #DCE5EB;
}

/* ===== Header ===== */
.page-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(238, 243, 246, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(122, 139, 153, 0.18);
  transform: translateZ(0);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.page-header--scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.96);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: 1.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-accent-2);
}

.logo:hover,
.logo:focus {
  color: var(--color-accent-2);
}

.logo__img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

@media (min-width: 420px) {
  .logo__brand {
    display: inline;
  }
}

.nav__list {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.nav__link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-weight: 600;
  color: var(--color-accent-2);
  border-radius: 0.5rem;
  transition: color var(--transition-base), background var(--transition-base);
}

.nav__link:hover,
.nav__link:focus,
.nav__link[aria-current="page"] {
  color: var(--color-accent);
  background: rgba(230, 126, 34, 0.08);
}

.header-contacts {
  display: none;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.header-contacts__item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.header-contacts__link {
  color: var(--color-accent-2);
}

@media (min-width: 1024px) {
  .header-contacts {
    display: flex;
  }
}

.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 48px;
  height: 48px;
  gap: 5px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.75rem;
}

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

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

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

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

.nav--mobile {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  border-top: 1px solid var(--color-light);
}

.nav--mobile.is-open {
  display: block;
}

.nav--mobile .nav__list {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
}

.nav--mobile .nav__link {
  width: 100%;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-light);
}

.nav--mobile .header-contacts {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

@media (min-width: 1024px) {
  .burger,
  .nav--mobile {
    display: none;
  }
}

/* ===== Buttons ===== */
.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font: inherit;
  font-weight: 700;
  border: 0;
  border-radius: var(--radius-button);
  cursor: pointer;
  overflow: hidden;
  z-index: 1;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-accent-2);
  z-index: -1;
  transform: translateX(-110%);
  transition: transform var(--transition-base);
}

.button:hover,
.button:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button:hover::before,
.button:focus::before {
  transform: translateX(0);
}

.button--primary {
  background: var(--color-accent);
  color: #FFFFFF;
}

.button--primary::before {
  background: var(--color-accent-2);
}

.button--secondary {
  background: var(--color-surface);
  color: var(--color-accent-2);
  border: 2px solid var(--color-light);
}

.button--secondary::before {
  background: var(--color-light);
}

.button--secondary:hover,
.button--secondary:focus {
  color: var(--color-accent-2);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: flex-end;
  padding: 8rem 0 4rem;
  overflow: hidden;
  color: #FFFFFF;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4vw), 0 100%);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

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

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(36, 74, 102, 0.86) 0%,
    rgba(36, 74, 102, 0.45) 50%,
    rgba(230, 126, 34, 0.25) 100%
  );
  z-index: -1;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 2rem;
  background: rgba(36, 74, 102, 0.72);
  backdrop-filter: blur(8px);
  border-radius: 0 2.5rem 0 2.5rem;
  border-left: 8px solid var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.hero--small {
  min-height: 55vh;
  align-items: center;
}

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.hero__text {
  font-size: 1.125rem;
  color: #E8EEF2;
  margin-bottom: 1.75rem;
  max-width: 620px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  position: relative;
  border-radius: var(--radius-card);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent);
  transition: height var(--transition-base);
  z-index: 0;
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card:hover::before,
.card:focus-within::before {
  width: 8px;
}

.card:hover::after,
.card:focus-within::after {
  height: 100%;
  opacity: 0.08;
}

.card__image {
  width: calc(100% + 4rem);
  height: 200px;
  margin: -2rem -2rem 1.5rem -2rem;
  object-fit: cover;
  border-radius: 0 1.25rem 0 0;
}

.card__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1rem;
  color: var(--color-accent);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card__text {
  color: var(--color-muted);
  margin-bottom: 1rem;
}

.card__price {
  display: inline-block;
  font-weight: 800;
  color: var(--color-accent);
  margin-top: auto;
}

.card__link {
  position: absolute;
  inset: 0;
  font-size: 0;
  z-index: 2;
}

.cards-grid--offset .card:nth-child(even) {
  transform: translateY(2rem);
}

.cards-grid--offset .card:nth-child(even):hover,
.cards-grid--offset .card:nth-child(even):focus-within {
  transform: translateY(1.25rem);
}

/* ===== Lists ===== */
.feature-list {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--color-dark);
}

.feature-list__item svg {
  flex: 0 0 28px;
  color: var(--color-accent);
}

.bulleted-list {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 1.25rem;
}

.bulleted-list li {
  margin-bottom: 0.5rem;
  color: var(--color-muted);
}

.bulleted-list li::marker {
  color: var(--color-accent);
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat {
  background: var(--color-surface);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  text-align: center;
  border-bottom: 4px solid var(--color-accent);
}

.stat__value {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-accent-2);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  color: var(--color-muted);
  font-size: 0.9375rem;
}

/* ===== Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
}

.process-step {
  position: relative;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding-top: 3.5rem;
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #FFFFFF;
  font-weight: 800;
  border-radius: 0 0.75rem 0 0.75rem;
}

.process-step__title {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  margin-top: 0.5rem;
}

/* ===== Forms ===== */
.form {
  max-width: 640px;
  display: grid;
  gap: 1.25rem;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form__label {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-accent-2);
}

.form__input,
.form__select,
.form__textarea {
  padding: 0.875rem 1rem;
  border: 2px solid var(--color-light);
  border-radius: 0.5rem;
  font: inherit;
  color: var(--color-dark);
  background: #FFFFFF;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(230, 126, 34, 0.12);
}

.form__input--error,
.form__select--error,
.form__textarea--error {
  border-color: #D35400;
}

.form__error {
  color: #D35400;
  font-size: 0.8125rem;
  display: none;
}

.form__input--error + .form__error,
.form__select--error + .form__error,
.form__textarea--error + .form__error {
  display: block;
}

.form__success {
  display: none;
  padding: 1rem 1.5rem;
  background: rgba(36, 74, 102, 0.08);
  border-left: 4px solid var(--color-accent-2);
  color: var(--color-accent-2);
  border-radius: 0 0.75rem 0 0.75rem;
}

.form__success.is-visible {
  display: block;
}

/* ===== Contact page ===== */
.contact-list {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.contact-list__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.0625rem;
  color: var(--color-dark);
}

.contact-list__item svg {
  color: var(--color-accent);
  flex: 0 0 32px;
}

.contact-list__link {
  font-weight: 700;
  color: var(--color-accent-2);
}

/* ===== Legal text ===== */
.legal-section {
  padding-top: 8rem;
}

.legal-section h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
}

.legal-section p,
.legal-section li {
  color: var(--color-muted);
  margin-bottom: 0.75rem;
}

.legal-section ul {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 1.25rem;
}

.legal-section li::marker {
  color: var(--color-accent);
}

/* ===== Decorative backgrounds ===== */
.shape {
  position: absolute;
  pointer-events: none;
  z-index: -1;
}

.shape--line {
  width: 240px;
  height: 240px;
  color: var(--color-light);
  opacity: 0.5;
}

.shape--roof {
  top: 2rem;
  right: -2rem;
}

.shape--grid {
  bottom: 2rem;
  left: -2rem;
  width: 180px;
  height: 180px;
  color: var(--color-light);
  opacity: 0.35;
}

/* ===== Footer ===== */
.page-footer {
  background: var(--color-accent-2);
  color: #DCE5EB;
  padding: 4rem 0 1.5rem;
  border-top: 6px solid var(--color-accent);
}

.footer__grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}

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

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 2fr 1.5fr 1.5fr 2fr;
  }
}

.footer__title {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer__list li {
  margin-bottom: 0.75rem;
}

.footer__list a {
  color: #DCE5EB;
  transition: color var(--transition-base);
}

.footer__list a:hover,
.footer__list a:focus {
  color: var(--color-accent);
}

.footer__text {
  color: #A8B9C4;
  font-size: 0.9375rem;
  line-height: 1.65;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(220, 229, 235, 0.16);
  font-size: 0.8125rem;
  color: #A8B9C4;
}

/* ===== Reveal animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Misc ===== */
.text-lead {
  font-size: 1.125rem;
  color: var(--color-muted);
}

.text-white {
  color: #FFFFFF;
}

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

/* ===== Cookie banner ===== */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-accent-2);
  color: #FFFFFF;
  padding: 1.5rem;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

.cookie-banner--visible {
  transform: translateY(0);
}

.cookie-banner__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.cookie-banner__text {
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0;
}

.cookie-banner__text a {
  color: var(--color-accent);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cookie-banner__button {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: 0;
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cookie-banner__button--accept {
  background: var(--color-accent);
  color: #FFFFFF;
}

.cookie-banner__button--accept:hover,
.cookie-banner__button--accept:focus {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(230, 126, 34, 0.4);
}

.cookie-banner__button--decline {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.cookie-banner__button--decline:hover,
.cookie-banner__button--decline:focus {
  background: rgba(255, 255, 255, 0.25);
}

@media (min-width: 768px) {
  .cookie-banner__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .cookie-banner__text {
    flex: 1;
    margin-right: 1.5rem;
  }
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav--desktop {
    display: none;
  }

  .section {
    padding: 4rem 0;
  }

  .hero {
    min-height: 85vh;
  }

  .hero__content {
    border-radius: 0 1.5rem 0 1.5rem;
  }

  .cards-grid--offset .card:nth-child(even) {
    transform: none;
  }

  .cards-grid--offset .card:nth-child(even):hover,
  .cards-grid--offset .card:nth-child(even):focus-within {
    transform: translateY(-6px);
  }
}