/* saliolabs.com — Apple-aesthetic minimalism */

:root {
  --brand-primary: #004FFE;
  --brand-primary-hover: #0040DA;
  --brand-accent: #4030F0;
  --ink-primary: #1d1d1f;
  --ink-secondary: #6e6e73;
  --surface: #FFFFFF;
  --surface-subtle: #F5F5F7;
  --hairline: rgba(0, 0, 0, 0.08);

  --max-content: 980px;
  --gutter: 24px;
  --gutter-mobile: 20px;

  --section-gap: 120px;
  --section-gap-mobile: 80px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Segoe UI", Roboto, "Helvetica Neue", Inter, system-ui, sans-serif;
  color: var(--ink-primary);
  background: var(--surface);
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: -0.01em;
}

::selection { background: var(--brand-primary); color: #fff; }

/* ── Layout primitives ─────────────────────────────── */

.container {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
@media (max-width: 640px) {
  .container { padding: 0 var(--gutter-mobile); }
}

.section {
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.section:first-of-type { padding-top: 80px; }
@media (max-width: 640px) {
  .section { padding-top: var(--section-gap-mobile); padding-bottom: var(--section-gap-mobile); }
  .section:first-of-type { padding-top: 56px; }
}

.hairline { border-top: 1px solid var(--hairline); }

/* ── Header ──────────────────────────────────────── */

.site-header {
  padding: 24px var(--gutter);
  background: var(--surface);
}
@media (max-width: 640px) {
  .site-header { padding: 20px var(--gutter-mobile); }
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand img {
  height: 32px;
  width: auto;
  display: block;
}
@media (max-width: 640px) {
  .brand img { height: 28px; }
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 0.95rem;
  font-weight: 500;
}
.nav a {
  color: var(--ink-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}
.nav a:hover { color: var(--brand-primary); }

@media (max-width: 480px) {
  .nav { gap: 18px; font-size: 0.9rem; }
}

/* ── Hero ─────────────────────────────────────────── */

.hero {
  text-align: center;
  padding-top: 96px;
  padding-bottom: 96px;
}
@media (max-width: 640px) {
  .hero { padding-top: 64px; padding-bottom: 64px; }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw + 1rem, 3.6rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  max-width: 18ch;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: clamp(1.1rem, 0.9vw + 1rem, 1.35rem);
  color: var(--ink-secondary);
  max-width: 38ch;
  margin: 0 auto 40px;
  line-height: 1.4;
  font-weight: 400;
}

/* ── Buttons ──────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.1s ease;
  border: none;
  cursor: pointer;
  letter-spacing: -0.01em;
}
.btn-primary {
  background: var(--brand-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--brand-primary-hover); }
.btn-primary:active { transform: scale(0.98); }

/* ── Generic content sections ─────────────────────── */

.content {
  max-width: 720px;
  margin: 0 auto;
}
.content h1 {
  font-size: clamp(1.8rem, 3vw + 1rem, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 32px;
}
.content h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 56px;
  margin-bottom: 16px;
}
.content h2:first-child { margin-top: 0; }
.content p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--ink-primary);
  margin-bottom: 20px;
}
.content p.lede {
  font-size: 1.25rem;
  color: var(--ink-secondary);
  margin-bottom: 40px;
  letter-spacing: -0.01em;
}
.content em.signature {
  display: block;
  margin-top: 64px;
  color: var(--ink-secondary);
  font-style: italic;
  font-size: 1rem;
}
.content ul, .content ol {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 20px;
  padding-left: 22px;
}
.content li { margin-bottom: 8px; }
.content a {
  color: var(--brand-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}
.content a:hover { border-bottom-color: var(--brand-primary); }

.content .updated {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  margin-bottom: 40px;
  font-style: italic;
}

/* ── Contact page (single mailto, big) ───────────── */

.contact-card {
  text-align: center;
  padding-top: 96px;
  padding-bottom: 96px;
}
.contact-card h1 {
  font-size: clamp(2rem, 4vw + 1rem, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}
.contact-card .email {
  display: inline-block;
  font-size: clamp(1.3rem, 2vw + 1rem, 1.8rem);
  color: var(--brand-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
  font-weight: 500;
}
.contact-card .email:hover { border-bottom-color: var(--brand-primary); }

/* ── About — Munyu/salt page ─────────────────────── */

.about {
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
  padding-top: 80px;
}
.about h1 {
  font-size: clamp(2rem, 4vw + 1rem, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}
.about p {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--ink-primary);
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}
.about p .munyu {
  color: var(--ink-secondary);
  font-style: italic;
}
.about hr {
  border: none;
  height: 1px;
  background: var(--hairline);
  margin: 56px 0;
}
.about .signature {
  font-size: 1.05rem;
  color: var(--ink-secondary);
  font-style: italic;
}

/* ── Footer ──────────────────────────────────────── */

.site-footer {
  background: var(--surface-subtle);
  padding: 56px var(--gutter);
  margin-top: 80px;
}
@media (max-width: 640px) {
  .site-footer { padding: 40px var(--gutter-mobile) 32px; }
}

.site-footer .container {
  text-align: center;
  font-size: 0.9rem;
  color: var(--ink-secondary);
  padding: 0;
}
.site-footer p { margin-bottom: 12px; }
.site-footer a {
  color: var(--ink-secondary);
  text-decoration: none;
  margin: 0 12px;
  transition: color 0.15s ease;
}
.site-footer a:hover { color: var(--ink-primary); }

/* ── Focus states (a11y) ─────────────────────────── */

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Reduced motion ──────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}