/*
 * KeMCo Labs portal
 * Typography-first, white base, no external fonts or scripts.
 */

:root {
  color-scheme: light;
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #555b66;      /* 7.0:1 on white */
  --color-rule: #d9dce1;
  --color-accent: #1d2b4f;     /* 13.9:1 on white */
  --color-focus: #0b57d0;
  --measure: 40rem;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
  --space-5: 6rem;
  --font-sans: system-ui, -apple-system, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo,
    Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  font-kerning: normal;
  overflow-wrap: break-word;
}

.container {
  width: 100%;
  max-width: calc(var(--measure) + 2 * var(--space-3));
  margin-inline: auto;
  padding-inline: var(--space-3);
}

@media (max-width: 30rem) {
  .container {
    padding-inline: var(--space-2);
  }
}

/* Links and focus */

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -100%;
  padding: var(--space-1) var(--space-2);
  background: var(--color-bg);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  z-index: 1;
}

.skip-link:focus {
  top: var(--space-2);
}

/* Header / footer */

.site-header {
  border-bottom: 1px solid var(--color-rule);
}

.site-name {
  margin: 0;
  padding-block: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-name a {
  color: var(--color-text);
  text-decoration: none;
}

.site-name a:hover {
  text-decoration: underline;
}

main {
  flex: 1;
}

.site-footer {
  border-top: 1px solid var(--color-rule);
  color: var(--color-muted);
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
  padding-block: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-2);
}

/* Content */

.intro {
  padding-block: var(--space-5) var(--space-4);
}

h1 {
  margin: 0 0 var(--space-2);
  color: var(--color-accent);
  font-size: clamp(2.25rem, 1.6rem + 3vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.lead {
  margin: 0 0 var(--space-2);
  font-size: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  line-height: 1.5;
}

.org {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
}

.projects {
  padding-block: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-rule);
}

h2 {
  margin: 0 0 var(--space-1);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.empty {
  margin: 0;
  color: var(--color-text);
}

.status-code {
  margin: 0 0 var(--space-1);
  color: var(--color-muted);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.back {
  margin: var(--space-3) 0 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}