@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap");

:root {
  --header-height: 4.5rem;
  --first-hue: 250;
  --sat: 66%;
  --lig: 75%;
  --second-hue: 219;
  --first-color: hsl(var(--first-hue), var(--sat), var(--lig));
  --first-color-alt: hsl(var(--first-hue), var(--sat), 71%);
  --title-color: hsl(var(--second-hue), 18%, 96%);
  --text-color: hsl(var(--second-hue), 10%, 76%);
  --text-color-light: hsl(var(--second-hue), 10%, 58%);
  --body-color: hsl(var(--second-hue), 48%, 8%);
  --body-accent: radial-gradient(
      circle at top left,
      hsla(var(--first-hue), var(--sat), var(--lig), 0.18),
      transparent 35%
    ),
    radial-gradient(
      circle at 80% 10%,
      hsla(207, 90%, 72%, 0.14),
      transparent 28%
    ),
    linear-gradient(180deg, hsl(220, 42%, 10%), hsl(224, 45%, 7%));
  --container-color: hsl(var(--second-hue), 32%, 12%);
  --container-soft: hsla(var(--second-hue), 32%, 16%, 0.82);
  --border-color: hsla(var(--second-hue), 18%, 58%, 0.18);
  --shadow-lg: 0 24px 80px hsla(var(--second-hue), 60%, 2%, 0.42);
  --shadow-md: 0 14px 38px hsla(var(--second-hue), 60%, 2%, 0.28);
  --radius-lg: 1.6rem;
  --radius-md: 1rem;
  --radius-sm: 0.75rem;
  --body-font: "Poppins", sans-serif;
  --big-font-size: clamp(2rem, 4vw, 3.5rem);
  --h1-font-size: clamp(1.6rem, 3vw, 2.2rem);
  --h2-font-size: 1.3rem;
  --normal-font-size: 0.95rem;
  --small-font-size: 0.85rem;
  --tiny-font-size: 0.74rem;
  --font-medium: 500;
  --font-semibold: 600;
}

body.light-theme {
  --title-color: hsl(var(--second-hue), 24%, 18%);
  --text-color: hsl(var(--second-hue), 12%, 36%);
  --text-color-light: hsl(var(--second-hue), 10%, 46%);
  --body-color: hsl(0, 0%, 98%);
  --body-accent: radial-gradient(
      circle at top left,
      hsla(var(--first-hue), var(--sat), var(--lig), 0.16),
      transparent 32%
    ),
    radial-gradient(circle at 80% 10%, hsla(207, 90%, 72%, 0.12), transparent 26%),
    linear-gradient(180deg, hsl(225, 36%, 98%), hsl(218, 38%, 95%));
  --container-color: hsl(0, 0%, 100%);
  --container-soft: hsla(0, 0%, 100%, 0.88);
  --border-color: hsla(var(--second-hue), 18%, 22%, 0.09);
  --shadow-lg: 0 24px 80px hsla(var(--second-hue), 30%, 20%, 0.12);
  --shadow-md: 0 14px 38px hsla(var(--second-hue), 25%, 20%, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--body-accent);
  background-color: var(--body-color);
  color: var(--text-color);
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  line-height: 1.6;
}

body,
button,
input,
textarea,
select {
  font: inherit;
}

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

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

button,
select {
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--title-color);
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.tools-main {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: calc(var(--header-height) + 1.5rem) 0 5rem;
}

.tools-shell__header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 1rem 0 0;
  backdrop-filter: blur(24px);
}

.tools-shell__header-inner {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 2fr) auto;
  align-items: center;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border-color);
  border-radius: 1.35rem;
  background: var(--container-soft);
  box-shadow: var(--shadow-md);
}

.tools-shell__brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.tools-shell__brand-kicker {
  font-size: var(--tiny-font-size);
  color: var(--text-color-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tools-shell__brand-title {
  color: var(--title-color);
  font-weight: var(--font-semibold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tools-shell__nav {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
}

.tools-shell__nav::-webkit-scrollbar {
  display: none;
}

.tools-shell__nav-link,
.tools-shell__home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.72rem 0.9rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: hsla(var(--second-hue), 26%, 18%, 0.55);
  color: var(--text-color);
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease,
    background 0.2s ease;
}

.tools-shell__nav-link {
  flex-shrink: 0;
  scroll-snap-align: start;
}

.light-theme .tools-shell__nav-link,
.light-theme .tools-shell__home-link {
  background: hsla(0, 0%, 100%, 0.9);
}

.tools-shell__nav-link:hover,
.tools-shell__home-link:hover {
  transform: translateY(-1px);
  border-color: hsla(var(--first-hue), var(--sat), var(--lig), 0.34);
  color: var(--title-color);
}

.tools-shell__nav-link--active {
  background: linear-gradient(
    135deg,
    hsla(var(--first-hue), var(--sat), var(--lig), 0.24),
    hsla(207, 90%, 72%, 0.18)
  );
  border-color: hsla(var(--first-hue), var(--sat), var(--lig), 0.4);
  color: var(--title-color);
}

.tools-shell__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.6rem;
}

.tools-shell__language-label {
  display: flex;
}

.tools-shell__language,
.tools-shell__theme-button {
  height: 2.85rem;
  border-radius: 0.9rem;
  background: hsla(var(--second-hue), 24%, 18%, 0.62);
  color: var(--title-color);
  border: 1px solid var(--border-color);
}

.light-theme .tools-shell__language,
.light-theme .tools-shell__theme-button {
  background: hsla(0, 0%, 100%, 0.92);
}

.tools-shell__language {
  min-width: 4.3rem;
  padding: 0 0.85rem;
}

.tools-shell__theme-button {
  width: 2.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.tools-shell__footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto 2rem;
  padding: 2rem 1.2rem;
  border: 1px solid var(--border-color);
  border-radius: 1.6rem;
  background: var(--container-soft);
  box-shadow: var(--shadow-md);
}

.tools-shell__footer-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: minmax(0, 1.8fr) repeat(2, minmax(0, 1fr));
}

.tools-shell__footer-copy {
  display: grid;
  gap: 0.85rem;
}

.tools-shell__footer-copy h2 {
  font-size: 1.25rem;
}

.tools-shell__footer-note {
  color: var(--first-color);
  font-size: var(--small-font-size);
}

.tools-shell__footer-links {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.tools-shell__footer-links h3 {
  font-size: var(--small-font-size);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-color-light);
}

.tools-shell__footer-links a {
  color: var(--title-color);
}

.tools-shell__footer-bottom {
  margin-top: 1.5rem;
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--border-color);
  color: var(--text-color-light);
  font-size: var(--small-font-size);
}

@media screen and (max-width: 1024px) {
  .tools-shell__header-inner {
    grid-template-columns: 1fr;
  }

  .tools-shell__actions {
    justify-content: space-between;
  }

  .tools-shell__footer-grid {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 768px) {
  .tools-shell__header-inner {
    gap: 0.85rem;
    padding: 0.95rem 1rem;
  }

  .tools-shell__nav {
    padding-bottom: 0.2rem;
  }

  .tools-shell__nav-link,
  .tools-shell__home-link {
    min-height: 2.9rem;
  }

  .tools-shell__actions {
    flex-wrap: wrap;
    width: 100%;
  }

  .tools-shell__home-link {
    flex: 1 1 100%;
    justify-content: center;
  }

  .tools-shell__language-label {
    flex: 1 1 auto;
  }

  .tools-shell__language {
    width: 100%;
    min-width: 0;
  }
}

@media screen and (max-width: 640px) {
  .tools-main {
    width: min(100% - 1rem, 1180px);
    padding-top: calc(var(--header-height) + 2.5rem);
  }

  .tools-shell__header {
    padding-top: 0.5rem;
  }

  .tools-shell__header-inner,
  .tools-shell__footer {
    width: min(100% - 1rem, 1180px);
    padding: 1rem;
    border-radius: 1.1rem;
  }
}

@media screen and (max-width: 480px) {
  .tools-main {
    width: min(100% - 0.75rem, 1180px);
    padding-top: calc(var(--header-height) + 2rem);
    padding-bottom: 4rem;
  }

  .tools-shell__header {
    padding-top: 0.35rem;
  }

  .tools-shell__header-inner,
  .tools-shell__footer {
    width: min(100% - 0.75rem, 1180px);
    padding: 0.85rem;
    border-radius: 1rem;
  }

  .tools-shell__brand-kicker {
    display: none;
  }

  .tools-shell__brand-title {
    font-size: 0.98rem;
  }

  .tools-shell__nav-link,
  .tools-shell__home-link {
    padding: 0.68rem 0.8rem;
    font-size: 0.9rem;
  }

  .tools-shell__footer {
    padding-top: 1.5rem;
  }

  .tools-shell__footer-bottom {
    gap: 0.5rem;
  }
}