/* ===== Variables — Monochrome Beach (Coolors) ===== */
:root {
  --palette-graphite: #353535;
  --palette-teal: #3c6e71;
  --palette-white: #ffffff;
  --palette-dust: #d9d9d9;
  --palette-yale: #284b63;
  --shadow-rgb: 40, 75, 99;

  --color-bg: var(--palette-dust);
  --color-surface: var(--palette-white);
  --color-text: var(--palette-graphite);
  --color-text-muted: var(--palette-graphite);
  --color-primary: var(--palette-yale);
  --color-primary-light: var(--palette-graphite);
  --color-accent: var(--palette-teal);
  --color-accent-hover: #326367;
  --color-accent-soft: #c5d8da;
  --color-border: #c4c4c4;
  --color-border-strong: #b3b3b3;
  --color-telegram: #229ed9;
  --color-max: var(--palette-yale);
  --font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(var(--shadow-rgb), 0.05), 0 16px 40px rgba(var(--shadow-rgb), 0.07);
  --shadow-hover: 0 1px 2px rgba(var(--shadow-rgb), 0.07), 0 20px 48px rgba(var(--shadow-rgb), 0.1);
  --header-height: 68px;
  --container-max: 1080px;
  --section-y: clamp(4.5rem, 9vw, 6rem);
  --section-header-gap: 2.5rem;
  --leading-tight: 1.12;
  --leading-body: 1.55;
  --leading-relaxed: 1.65;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 0.22s var(--ease-out);
}

/* ===== Reset & base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(60, 110, 113, 0.35);
  color: var(--color-primary);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.5rem 0.875rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-primary);
  transform: translateY(-140%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

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

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

ul {
  list-style: none;
}

code {
  font-size: 0.85em;
  background: var(--color-border);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card,
  .btn,
  .contact__item {
    transition: none;
  }
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(217, 217, 217, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

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

.logo {
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

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

.nav {
  display: none;
  gap: 1.25rem;
  align-items: center;
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.nav__link--cta {
  background: var(--color-max);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  color: #fff;
  box-shadow: 0 1px 0 rgba(var(--shadow-rgb), 0.12);
}

.nav__link--cta:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

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

.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);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 1.25rem 1rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav__link {
  padding: 0.75rem 0;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__link:last-child {
  border-bottom: none;
  color: var(--color-primary);
  font-weight: 600;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .burger {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--color-max);
  color: #fff;
  border-color: var(--color-max);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
}

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

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

.btn--telegram {
  background: var(--color-telegram);
  color: #fff;
  width: 100%;
}

.btn--telegram:hover {
  filter: brightness(1.08);
}

.btn--max {
  background: var(--color-max);
  color: #fff;
  width: 100%;
}

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

/* ===== Hero ===== */
.hero {
  position: relative;
  isolation: isolate;
  padding: clamp(3.5rem, 8vw, 5rem) 0 clamp(3rem, 7vw, 4.25rem);
  background: var(--palette-yale) url("../assets/hero-1c-bg.png") center right / cover no-repeat;
  color: #fff;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(
      105deg,
      rgba(40, 75, 99, 0.94) 0%,
      rgba(40, 75, 99, 0.88) 36%,
      rgba(60, 110, 113, 0.55) 58%,
      rgba(40, 75, 99, 0.25) 78%,
      rgba(53, 53, 53, 0.12) 100%
    );
}

.hero > .container {
  position: relative;
  z-index: 1;
}

.hero__inner {
  max-width: 36rem;
}

.hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 100px;
  margin-bottom: 0.875rem;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 0.625rem;
  text-wrap: balance;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.25vw, 1.125rem);
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.88);
  max-width: 34rem;
  margin-bottom: 1.25rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
}

.hero__actions .btn--outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.hero__actions .btn--outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  color: #fff;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero__tag--lead {
  order: -1;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.32);
}

.hero__tag {
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* ===== Sections ===== */
.section-header {
  margin-bottom: var(--section-header-gap);
  max-width: 40rem;
}

.section-title {
  font-size: clamp(1.625rem, 3.2vw, 2.125rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: var(--leading-tight);
  text-wrap: balance;
  color: var(--color-primary);
  margin-bottom: 0.625rem;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: var(--leading-body);
  margin-bottom: 0;
  max-width: 36rem;
}

.services {
  padding: var(--section-y) 0;
  background: var(--color-bg);
}

.services__grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Cards ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.75rem 1.625rem;
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-hover);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.card__text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== Tasks ===== */
.tasks {
  padding: var(--section-y) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.tasks__grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .tasks__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .tasks__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.task {
  padding: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.task__number {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.task__title {
  margin-bottom: 0.5rem;
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 600;
}

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

/* ===== About ===== */
.about {
  padding: var(--section-y) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.about__inner {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .about__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 3rem;
  }
}

.about__content .section-title {
  margin-bottom: 1.25rem;
}

.about__content p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: var(--leading-body);
  max-width: 38rem;
}

.about__content p:last-child {
  margin-bottom: 0;
}

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

.fact {
  flex: 1 1 calc(50% - 0.5rem);
  min-width: 90px;
  text-align: center;
  padding: 1.25rem 1rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.fact__value {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.fact__label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* ===== Industries ===== */
.industries {
  padding: var(--section-y) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.industries__grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .industries__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.industry-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.industry-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-hover);
}

.industry-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-primary);
}

.industry-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(var(--shadow-rgb), 0.32) 100%);
  pointer-events: none;
}

.industry-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.industry-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 1.125rem;
  padding: 1.375rem 1.5rem 1.5rem;
}

.industry-card__summary {
  flex: 0 0 auto;
  min-height: 8.5rem;
}

.industry-card__label {
  margin-bottom: 0.35rem;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.industry-card__title {
  margin-bottom: 0.5rem;
  color: var(--color-primary);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.industry-card__link {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--color-primary-light);
  font-size: 0.8125rem;
  font-weight: 600;
}

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

.industry-card__work {
  flex: 0 0 auto;
  margin-top: 0;
  padding: 1rem 1.125rem 1.0625rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.industry-card__work-tag {
  display: inline-block;
  max-width: 100%;
  margin-bottom: 0;
  padding: 0.35rem 0.625rem;
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.35;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: 6px;
  box-shadow: 0 1px 0 rgba(var(--shadow-rgb), 0.06);
}

.industry-card__work-text {
  margin: 0.75rem 0 0;
  padding-top: 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.55;
  border-top: 1px solid var(--color-border);
}

.industry-card__text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.industries__note {
  margin-top: 2rem;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-align: center;
}

/* ===== Cooperation (partners + contact) ===== */
.cooperation {
  display: flex;
  flex-direction: column;
  gap: clamp(2.25rem, 5vw, 3.5rem);
}

.cooperation .partners {
  padding: clamp(2.5rem, 5vw, 3.5rem) 0 clamp(3.5rem, 7vw, 5rem);
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.cooperation .partners__inner {
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  align-items: center;
}

.cooperation .contact {
  padding: clamp(2.5rem, 5vw, 3.5rem) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.cooperation .partners .partners__list li {
  background: var(--color-surface);
}

.cooperation .contact .contact__item {
  background: var(--color-bg);
}

.cooperation .section-header {
  margin-bottom: 1.75rem;
}

/* ===== Partners ===== */
.partners {
  padding: 0;
  background: transparent;
  border-top: none;
}

.partners__inner {
  display: grid;
  gap: 2rem;
  padding: clamp(1.75rem, 4vw, 2.5rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

@media (min-width: 768px) {
  .partners__inner {
    grid-template-columns: 1.15fr 1fr;
    align-items: center;
    gap: 2.5rem;
  }
}

.partners__eyebrow {
  margin-bottom: 0.5rem;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.partners__intro .section-title {
  margin-bottom: 0.75rem;
}

.partners__text {
  max-width: 36rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.partners__list {
  display: grid;
  gap: 0.625rem;
}

.partners__list li {
  padding: 0.875rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ===== Contact ===== */
.contact {
  padding: var(--section-y) 0;
  background: var(--color-bg);
  scroll-margin-top: calc(var(--header-height) + 0.5rem);
}

.contact__grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 640px) {
  .contact__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact__item {
  display: block;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact__item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow);
}

.contact__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.contact__value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
}

.contact__messengers {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ===== Footer ===== */
.footer {
  padding: 2rem 0;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: center;
}

@media (min-width: 640px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}

.footer__note {
  opacity: 0.6;
  font-size: 0.8125rem;
}

.footer code {
  background: rgba(255, 255, 255, 0.15);
  color: inherit;
}