/* SPLICE — макет, БЭМ */

/* токены */
:root {
  --color-night: #0A1931;
  --color-deep: #1A3D63;
  --color-steel: #4A7FA7;
  --color-mist: #B3CFE5;
  --color-snow: #F6FAFD;

  --color-text: var(--color-snow);
  --color-text-muted: rgba(179, 207, 229, 0.78);
  --color-line: rgba(179, 207, 229, 0.18);
  --color-surface: #0F2442;

  --font-text: "Manrope", system-ui, sans-serif;
  --font-display: "Inter Tight", "Arial", sans-serif;
  --display-weight: 500;
  --margin-block: 150px;
  --gutter: clamp(16px, 4vw, 56px);
  --header-h: 84px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

[hidden] {
  display: none !important;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 15px;
}

section {
  margin: var(--margin-block) 0;
  padding: 0;
  display: block;
}

.hero {
  margin-top: 0;
}

.page {
  background: var(--color-night);
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
}

.page__body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-night);
  color: var(--color-text);
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.page__body--locked {
  overflow: hidden;
}

.page__main {
  display: block;
}

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

img,
svg {
  display: block;
}

button {
  font: inherit;
  color: inherit;
}

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

/* кнопки */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 54px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-text);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  transition: border-color 0.5s var(--ease-out), color 0.5s var(--ease-out), transform 0.3s var(--ease-out);
}

/* заливка при наведении: растёт слева направо */
.button::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--button-fill);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.5s var(--ease-out);
}

.button:hover::before,
.button:focus-visible::before {
  transform: scaleX(1);
}

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

.button--primary {
  --button-fill: var(--color-mist);
  background: var(--color-snow);
  color: var(--color-night);
}

.button--ghost {
  --button-fill: var(--color-snow);
  border-color: rgba(246, 250, 253, 0.28);
  background: transparent;
}

.button--ghost:hover,
.button--ghost:focus-visible {
  border-color: var(--color-snow);
  color: var(--color-night);
}

/* тёмная — для светлых карточек */
.button--dark {
  --button-fill: var(--color-deep);
  background: var(--color-night);
  color: var(--color-snow);
}

.button--small {
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

.button__icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.3s var(--ease-out);
}

.button:hover .button__icon {
  transform: translateX(3px);
}