:root {
  color-scheme: light;
  --color-page: #eff3f6;
  --color-surface: #fafcfe;
  --color-surface-soft: #f4f7f9;
  --color-surface-raised: #ffffff;
  --color-ink: #0d1116;
  --color-ink-soft: #33383e;
  --color-muted: #595e64;
  --color-border: #bfc5ca;
  --color-border-soft: #dbdee3;
  --color-primary: #b75e2b;
  --color-primary-strong: #9c470e;
  --color-primary-wash: rgb(183 94 43 / 11%);
  --color-on-primary: #ffffff;
  --font-display: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Atkinson Hyperlegible", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-2xl: clamp(2.25rem, 3.5vw, 2.875rem);
  --text-display: clamp(2.95rem, 5vw, 4.125rem);
  --section-space: clamp(4.5rem, 6vw, 5.5rem);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --motion-micro: 120ms;
  --motion-control: 220ms;
  --motion-orbit: 600ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --shell: 1180px;
  --gutter: clamp(1rem, 4vw, 2rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--color-page);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body,
button,
input {
  font: inherit;
}

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

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.035em;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--color-primary-strong);
  color: var(--color-on-primary);
  font-weight: 700;
  transform: translateY(calc(-100% - 2rem));
}

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

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

.shell {
  width: min(calc(100% - (2 * var(--gutter))), var(--shell));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-space);
}

.site-header {
  position: relative;
  z-index: 20;
  padding-block: 1.25rem;
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 48px;
}

.site-header__brand {
  justify-self: start;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
}

.brand--inverse {
  color: #f7f9fb;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-full);
  background: rgb(250 252 254 / 78%);
  box-shadow: 0 8px 24px rgb(13 17 22 / 4%);
  backdrop-filter: blur(12px);
  font-family: var(--font-display);
  font-size: var(--text-sm);
}

.site-nav a {
  min-height: 36px;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-full);
  transition:
    background var(--motion-control) var(--ease-out),
    color var(--motion-control) var(--ease-out);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--color-primary-wash);
  color: var(--color-primary-strong);
}

.site-header__login {
  justify-self: end;
  padding: 0.6rem 0;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
}

.site-header__login::after {
  display: block;
  width: 0;
  height: 1px;
  margin-top: 2px;
  background: var(--color-primary);
  content: "";
  transition: width var(--motion-control) var(--ease-out);
}

.site-header__login:hover::after {
  width: 100%;
}

.tools-hero {
  display: grid;
  min-height: 720px;
  align-items: center;
  padding: 0 0 4rem;
}

.tools-hero__inner {
  text-align: center;
}

.tools-hero h1 {
  max-width: 720px;
  margin-inline: auto;
  font-size: var(--text-display);
  font-weight: 500;
  line-height: 1.02;
}

.url-entry {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  width: min(570px, 100%);
  min-height: 70px;
  margin: 2.25rem auto 0;
  padding: 6px;
  border: 1px solid var(--color-border);
  border-radius: 19px;
  background: var(--color-surface-raised);
  box-shadow:
    0 18px 40px rgb(13 17 22 / 10%),
    0 0 0 0 rgb(183 94 43 / 0%);
  text-align: left;
  transition:
    border-color var(--motion-control) var(--ease-out),
    box-shadow var(--motion-control) var(--ease-out);
}

.url-entry:focus-within,
.url-entry[data-state="valid"] {
  border-color: rgb(183 94 43 / 64%);
  box-shadow:
    0 18px 44px rgb(13 17 22 / 11%),
    0 0 0 7px rgb(183 94 43 / 9%);
}

.url-entry[data-state="error"] {
  border-color: var(--color-primary-strong);
}

.url-entry input {
  width: 100%;
  min-width: 0;
  padding: 0 1rem;
  border: 0;
  outline: 0;
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.url-entry input::placeholder {
  color: #858b91;
  opacity: 1;
}

.url-entry button {
  min-width: 78px;
  min-height: 58px;
  padding: 0 1rem;
  border: 1px solid var(--color-primary-strong);
  border-radius: 14px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  transition:
    background var(--motion-control) var(--ease-out),
    transform var(--motion-control) var(--ease-out);
}

.url-entry button:hover {
  background: var(--color-primary-strong);
}

.url-entry[data-state="valid"] button {
  transform: translateX(2px);
}

.url-entry__message {
  position: absolute;
  top: calc(100% + 8px);
  left: 14px;
  color: var(--color-primary-strong);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.tools-list-section {
  border-top: 1px solid var(--color-border-soft);
  background: var(--color-surface-soft);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 3rem;
}

.section-heading--center {
  margin-inline: auto;
  text-align: center;
}

.section-heading h2 {
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: 1.05;
}

.section-heading p {
  margin-top: 1rem;
  color: var(--color-muted);
}

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

.tool-card {
  display: flex;
  min-height: 292px;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
  box-shadow: 0 12px 30px rgb(13 17 22 / 5%);
  transition:
    border-color var(--motion-control) var(--ease-out),
    box-shadow var(--motion-control) var(--ease-out),
    transform var(--motion-micro) var(--ease-out);
}

.tool-card:hover {
  border-color: rgb(183 94 43 / 38%);
  box-shadow: 0 18px 42px rgb(13 17 22 / 8%);
  transform: translateY(-2px);
}

.tool-card__name {
  color: var(--color-primary-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tool-card h3 {
  max-width: 18ch;
  margin-top: 1rem;
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  font-weight: 500;
  line-height: 1.12;
}

.tool-card > p:not(.tool-card__name) {
  max-width: 50ch;
  margin-top: 1rem;
  color: var(--color-muted);
}

.tool-card__link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-top: auto;
  padding-top: 1.5rem;
  color: var(--color-primary-strong);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgb(183 94 43 / 34%);
  text-underline-offset: 0.25em;
}

.tool-card__link:hover {
  text-decoration-color: currentColor;
}

.tools-start-section {
  padding-block: 5rem 6rem;
}

.tools-start-section .section-heading {
  margin-bottom: 2rem;
}

.start-surface {
  position: relative;
  display: grid;
  min-height: 270px;
  overflow: hidden;
  place-items: center;
  padding-inline: 1rem;
  border: 1px solid rgb(183 94 43 / 26%);
  border-radius: 32px;
  background:
    radial-gradient(circle at 50% 46%, rgb(183 94 43 / 21%), transparent 33%),
    linear-gradient(135deg, rgb(183 94 43 / 7%), rgb(183 94 43 / 13%));
}

.start-surface::before,
.start-surface::after {
  position: absolute;
  width: 500px;
  height: 130px;
  border: 1px solid rgb(183 94 43 / 22%);
  border-radius: 50%;
  content: "";
  transform: rotate(-7deg);
  transition:
    transform var(--motion-orbit) var(--ease-out),
    opacity var(--motion-orbit) var(--ease-out);
}

.start-surface::after {
  width: 620px;
  height: 180px;
  opacity: 0.55;
  transform: rotate(7deg);
}

.start-surface:hover::before {
  transform: rotate(-4deg) scale(1.03);
}

.start-surface:hover::after {
  transform: rotate(4deg) scale(0.98);
}

.url-entry--compact {
  z-index: 1;
  margin: 0;
}

.site-footer {
  margin-top: 2.5rem;
  padding: 5rem 0 2rem;
  background: var(--color-ink);
  color: #f7f9fb;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(280px, 1.8fr) repeat(3, minmax(120px, 0.7fr));
  gap: 3rem;
}

.site-footer__maker p {
  max-width: 340px;
  margin-top: 1.4rem;
  color: #aeb5bc;
}

.site-footer__maker strong {
  color: #f7f9fb;
  font-weight: 400;
}

.site-footer__grid > div:not(:first-child) {
  display: grid;
  align-content: start;
  gap: 0.75rem;
}

.footer-label {
  margin-bottom: 0.45rem;
  color: #8f979f;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer__grid a {
  width: fit-content;
  color: #cbd1d6;
  transition: color var(--motion-control) var(--ease-out);
}

.site-footer__grid a:hover {
  color: #ffffff;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #2f353c;
  color: #8f979f;
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

@media (max-width: 900px) {
  .site-header__inner {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .site-footer__grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 1rem;
    --text-display: 2.95rem;
    --text-2xl: 2.25rem;
    --section-space: 3.5rem;
  }

  .site-header {
    padding-block: 0.9rem;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .tools-hero {
    min-height: 560px;
    padding: 0 0 3rem;
  }

  .tools-hero h1 {
    max-width: 360px;
    font-size: 2.95rem;
    line-height: 1.03;
  }

  .url-entry {
    min-height: 64px;
    margin-top: 1.8rem;
    border-radius: 17px;
  }

  .url-entry input {
    padding-inline: 0.8rem;
  }

  .url-entry button {
    min-width: 70px;
    min-height: 52px;
    border-radius: 12px;
  }

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

  .tool-card {
    min-height: 260px;
  }

  .tools-start-section {
    padding-block: 3.5rem 5rem;
  }

  .start-surface {
    min-height: 220px;
    border-radius: var(--radius-lg);
  }

  .start-surface::before {
    width: 360px;
  }

  .start-surface::after {
    width: 420px;
  }

  .site-footer {
    padding-top: 4rem;
  }

  .site-footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem 1.5rem;
  }

  .site-footer__maker {
    grid-column: 1 / -1;
  }

  .site-footer__bottom {
    display: grid;
    margin-top: 3.5rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}