/* === CORE FONTS === */
@font-face {
  font-family: "CS-Heading";
  src: url("../fonts/Rajdhani-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "CS-Body";
  src: url("../fonts/IBMPlexSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "CS-Body";
  src: url("../fonts/IBMPlexSans-Medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: "CS-Body", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background-color: #05070a;
  color: #f5f5f5;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

/* === THEME TOKENS === */
:root {
  --cs-bg: #05070a;
  --cs-surface: #10131a;
  --cs-surface-soft: #131724;
  --cs-surface-soft-alt: #111622;
  --cs-border-subtle: rgba(255, 255, 255, 0.09);

  --cs-accent: #f6a723;
  --cs-accent-soft: #ffce66;
  --cs-brick: #c46744;
  --cs-teal: #20d0b2;

  --cs-text-main: #f5f5f5;
  --cs-text-muted: #b7bfcc;
  --cs-text-soft: #8e96a5;

  --cs-radius-lg: 24px;
  --cs-radius-md: 16px;
  --cs-radius-sm: 999px;

  --cs-shadow-soft: 0 22px 60px rgba(0, 0, 0, 0.78);
  --cs-shadow-subtle: 0 14px 40px rgba(0, 0, 0, 0.6);

  --cs-header-height: 76px;
}

/* === GLOBAL LAYOUT === */

.cs-main {
  padding-top: var(--cs-header-height);
  background: radial-gradient(circle at top left, #141827 0, #05070a 60%);
  min-height: 100vh;
}

.cs-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-inline: 20px;
}

.cs-section {
  position: relative;
  padding: 120px 0 96px;
  overflow: hidden;
}

/* === HEADER === */

.cs-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--cs-header-height);
  z-index: 1000;
  background: linear-gradient(90deg, #05070a 0, #111622 40%, #05070a 100%);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--cs-border-subtle);
}

.cs-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding-inline: 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cs-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.cs-logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 11px;
  background: radial-gradient(circle at 30% 30%, #f6a723, #c46744 55%, #05070a 100%);
  box-shadow: 0 0 24px rgba(246, 167, 35, 0.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "CS-Heading", system-ui, sans-serif;
  font-size: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cs-logo-text {
  font-family: "CS-Heading", system-ui, sans-serif;
  font-size: 18px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cs-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
}

.cs-nav-link {
  position: relative;
  padding-block: 4px;
  color: var(--cs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
}

.cs-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cs-accent) 0, var(--cs-teal) 100%);
  transition: width 0.25s ease-out;
}

.cs-nav-link:hover::after,
.cs-nav-link:focus-visible::after {
  width: 100%;
}

.cs-nav-link--active {
  color: #ffffff;
}

.cs-nav-link--active::after {
  width: 100%;
}

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

.cs-header-phone {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, #f6a723 0, #c46744 40%, #111622 100%);
  box-shadow: 0 0 18px rgba(246, 167, 35, 0.5);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* === BURGER === */

.cs-burger {
  display: none;
  width: 36px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: radial-gradient(circle at 0 0, #f6a72322, #111622 70%);
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-direction: column;
}

.cs-burger-line {
  width: 58%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cs-accent) 0, var(--cs-teal) 100%);
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.cs-header--nav-open .cs-burger-line:first-child {
  transform: translateY(3px) rotate(37deg);
}

.cs-header--nav-open .cs-burger-line:last-child {
  transform: translateY(-3px) rotate(-37deg);
}

/* === BUTTONS === */

.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease,
    border-color 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}

.cs-btn--primary {
  background: linear-gradient(
    135deg,
    var(--cs-accent) 0,
    var(--cs-brick) 40%,
    #f05b21 100%
  );
  color: #05070a;
  box-shadow: 0 0 32px rgba(246, 167, 35, 0.65);
}

.cs-btn--primary:hover,
.cs-btn--primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 0 40px rgba(246, 167, 35, 0.95);
}

.cs-btn--ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--cs-text-main);
  background: radial-gradient(circle at 0 0, #20d0b220, transparent 70%);
}

.cs-btn--ghost:hover,
.cs-btn--ghost:focus-visible {
  border-color: var(--cs-teal);
  box-shadow: 0 0 26px rgba(32, 208, 178, 0.5);
  transform: translateY(-1px);
}

/* === TYPOGRAPHY BLOCKS === */

.cs-kicker,
.cs-section-kicker {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cs-text-soft);
  margin: 0 0 12px;
}

.cs-section-header {
  max-width: 620px;
  margin-bottom: 40px;
}

.cs-section-header--center {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.cs-section-title {
  font-family: "CS-Heading", system-ui, sans-serif;
  font-size: 30px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

.cs-section-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cs-text-muted);
}

/* === IMAGE GENERIC === */

.cs-img {
  border-radius: 16px;
  max-width: 350px;
  width: 100%;
  box-shadow: var(--cs-shadow-subtle);
}

/* === REVEAL ANIMATION (JS HOOK) === */

.js-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.19, 1, 0.22, 1),
    transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}

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

/* === FOOTER === */

.cs-footer {
  border-top: 1px solid var(--cs-border-subtle);
  background: radial-gradient(circle at top center, #171c2b, #05070a 70%);
  padding: 40px 0 24px;
  margin-top: 40px;
}

.cs-footer-inner {
  display: grid;
  gap: 30px;
  grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr));
  align-items: flex-start;
}

.cs-footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.cs-logo-mark--footer {
  box-shadow: 0 0 26px rgba(246, 167, 35, 0.9);
}

.cs-footer-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--cs-text-muted);
}

.cs-footer-title {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.cs-footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: var(--cs-text-muted);
}

.cs-footer-list li + li {
  margin-top: 4px;
}

.cs-footer-list a:hover,
.cs-footer-list a:focus-visible {
  color: #ffffff;
}

.cs-footer-bottom {
  margin-top: 28px;
  border-top: 1px solid var(--cs-border-subtle);
  padding-top: 14px;
  text-align: center;
}

.cs-footer-copy {
  margin: 0;
  font-size: 12px;
  color: var(--cs-text-soft);
}

/* === RESPONSIVE === */

@media (max-width: 1024px) {
  .cs-section {
    padding: 90px 0 72px;
  }
}

@media (max-width: 880px) {
  .cs-nav {
    position: fixed;
    inset: calc(var(--cs-header-height) + 8px) 20px auto 20px;
    padding: 16px 18px;
    border-radius: 18px;
    background: radial-gradient(circle at 0 0, #171c2b, #05070a 70%);
    border: 1px solid var(--cs-border-subtle);
    flex-direction: column;
    gap: 14px;
    box-shadow: var(--cs-shadow-soft);
    transform: translateY(-18px);
    opacity: 0;
    pointer-events: none;
  }

  .cs-header--nav-open .cs-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .cs-burger {
    display: inline-flex;
  }

  .cs-header-phone {
    display: none;
  }

  .cs-footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  :root {
    --cs-header-height: 70px;
  }

  .cs-header-inner {
    padding-inline: 16px;
  }

  .cs-section {
    padding: 76px 0 64px;
  }

  .cs-section-title {
    font-size: 24px;
  }

  .cs-section-header {
    margin-bottom: 26px;
  }

  .cs-footer-inner {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .cs-container {
    padding-inline: 14px;
  }

  .cs-btn {
    width: 100%;
    justify-content: center;
  }

  .cs-footer {
    padding-inline: 0;
  }
}
.cs-footer-bottom {
  margin-top: 28px;
  border-top: 1px solid var(--cs-border-subtle);
  padding-top: 14px;
  text-align: center;
}

.cs-footer-copy {
  margin: 0;
  font-size: 12px;
  color: var(--cs-text-soft);
}

/* LEGAL LINKS */
.cs-footer-legal {
  margin-top: 6px;
  font-size: 12px;
  color: var(--cs-text-soft);
}

.cs-footer-legal a {
  color: var(--cs-text-soft);
}

.cs-footer-legal a:hover,
.cs-footer-legal a:focus-visible {
  color: #ffffff;
}

.cs-footer-dot {
  margin: 0 6px;
}

/* адаптив на мобилке всё так же по центру */
@media (max-width: 480px) {
  .cs-footer-legal {
    line-height: 1.6;
  }
}