/* ====== Design tokens ====== */
:root {
  --font-body: 'Onest', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --max-width: 1080px;
  --gutter: 24px;
  --duration: 200ms;
  --easing: cubic-bezier(0.4, 0, 0.2, 1);

  /* Light theme (default) */
  --color-background: #F3F5F1;
  --color-surface: #FFFFFF;
  --color-foreground: #17201B;
  --color-muted-foreground: #56625A;
  --color-border: #DFE5DF;
  --color-accent: #1E6B55;
  --color-on-accent: #FFFFFF;
  --color-accent-soft: color-mix(in srgb, var(--color-accent) 9%, var(--color-surface));
  --color-tag: color-mix(in srgb, var(--color-foreground) 5%, transparent);
  --shadow-card: 0 1px 2px color-mix(in srgb, var(--color-foreground) 4%, transparent),
    0 24px 48px -24px color-mix(in srgb, var(--color-foreground) 18%, transparent);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --color-background: #101512;
  --color-surface: #161D19;
  --color-foreground: #E6ECE7;
  --color-muted-foreground: #98A69D;
  --color-border: #25302A;
  --color-accent: #6FCFAE;
  --color-on-accent: #0D1A14;
}

/* ====== Reset ====== */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-foreground);
  background: var(--color-background);
  transition: background-color var(--duration) var(--easing), color var(--duration) var(--easing);
  min-height: 100dvh;
}
h1, h2, h3, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 6px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: var(--color-on-accent);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
}
.skip-link:focus { left: 16px; top: 16px; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}

/* ====== Buttons & chips ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  transition: transform var(--duration) var(--easing), box-shadow var(--duration) var(--easing);
}
.btn:active { transform: scale(0.98); }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary { background: var(--color-accent); color: var(--color-on-accent); }
.btn-primary:hover { box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--color-accent) 70%, transparent); }

.chip {
  position: relative;
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 44px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-muted-foreground);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  transition: color var(--duration) var(--easing), border-color var(--duration) var(--easing);
}
.chip:hover { color: var(--color-foreground); border-color: var(--color-muted-foreground); }

/* ====== Header ====== */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 100;
  background: color-mix(in srgb, var(--color-background) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}
.logo {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-foreground);
  color: var(--color-background);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
}
.main-nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-muted-foreground);
  padding: 8px 0;
  transition: color var(--duration) var(--easing);
}
.main-nav a:hover { color: var(--color-foreground); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle .icon {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px;
  height: 18px;
  transition: opacity var(--duration) var(--easing), transform var(--duration) var(--easing);
}
.theme-toggle .icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
.theme-toggle .icon-moon { opacity: 0; transform: rotate(-90deg) scale(0.6); }
html[data-theme="dark"] .theme-toggle .icon-sun { opacity: 0; transform: rotate(90deg) scale(0.6); }
html[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }

/* ====== Hero ====== */
.hero-inner {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 56px;
  align-items: center;
  padding-block: 72px 88px;
}
.intro {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 10px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  font-size: 13px;
  font-weight: 500;
}
.pulse {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}
.pulse::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--color-accent);
  animation: ping 2.4s ease-out infinite;
}
@keyframes ping {
  0% { transform: scale(1); opacity: 0.6; }
  80%, 100% { transform: scale(3); opacity: 0; }
}
.intro h1 {
  font-size: clamp(42px, 6.4vw, 76px);
  line-height: 0.98;
  font-weight: 800;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.intro h1 span {
  color: var(--color-muted-foreground);
  font-weight: 600;
}
.lead {
  font-size: 18px;
  color: var(--color-muted-foreground);
  max-width: 34em;
  text-wrap: pretty;
}
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-muted-foreground);
}
.stack li::before { content: "/ "; color: var(--color-accent); }

/* ====== Contact card ====== */
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.contact-card-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.contact-card-head h2 { font-size: 22px; letter-spacing: -0.02em; }
.contact-card-head p { font-size: 14px; color: var(--color-muted-foreground); }
.contact-card .btn-primary { width: 100%; min-height: 52px; font-size: 16px; }

.contact-rows {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}
.contact-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  border-bottom: 1px solid var(--color-border);
}
.contact-label {
  width: 72px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted-foreground);
}
.contact-value {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  overflow-wrap: anywhere;
  transition: color var(--duration) var(--easing);
}
.contact-value:hover { color: var(--color-accent); }
.copy-btn {
  flex-shrink: 0;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted-foreground);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  transition: color var(--duration) var(--easing), border-color var(--duration) var(--easing);
}
.copy-btn:hover { color: var(--color-foreground); border-color: var(--color-muted-foreground); }
.copy-btn.is-done { color: var(--color-accent); border-color: var(--color-accent); }
.clock {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-muted-foreground);
  font-variant-numeric: tabular-nums;
}
.clock b { color: var(--color-foreground); font-weight: 500; }

/* ====== Skills ====== */
.skills-inner {
  padding-block: 72px;
  border-top: 1px solid var(--color-border);
}
.section-title {
  font-size: clamp(26px, 3.4vw, 34px);
  letter-spacing: -0.025em;
  margin-bottom: 32px;
}
.skill-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 10px 32px;
  align-items: baseline;
  padding-block: 18px;
  border-bottom: 1px solid var(--color-border);
}
.skill-row:first-child { border-top: 1px solid var(--color-border); }
.skill-row h3 { font-size: 15px; font-weight: 600; }
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-list li {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  background: var(--color-tag);
}
.tag-note { color: var(--color-muted-foreground); }

/* ====== Closing CTA ====== */
.cta-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-block: 88px 96px;
  border-top: 1px solid var(--color-border);
}
.cta-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted-foreground);
}
.cta-mail {
  width: fit-content;
  padding-bottom: 6px;
  font-size: clamp(34px, 8.4vw, 104px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.045em;
  overflow-wrap: anywhere;
  background: linear-gradient(currentColor, currentColor) 0 100% / 0 3px no-repeat;
  transition: background-size 350ms ease;
}
.cta-mail span { color: var(--color-accent); }
.cta-mail:hover { background-size: 100% 3px; }
.cta-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  color: var(--color-muted-foreground);
}
.cta-sub a {
  color: var(--color-foreground);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ====== Footer ====== */
.footer-inner {
  padding-block: 24px;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted-foreground);
}

/* ====== Mobile contact dock ====== */
.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  display: none;
  gap: 8px;
  padding: 10px max(16px, env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));
  background: color-mix(in srgb, var(--color-background) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--color-border);
  transform: translateY(110%);
  /* visibility keeps the off-screen dock out of the tab order */
  visibility: hidden;
  transition: transform 300ms ease, visibility 0s 300ms;
}
.dock.is-visible { transform: none; visibility: visible; transition-delay: 0s; }
.dock .btn-primary { flex: 1; }

/* ====== Responsive ====== */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-block: 48px 64px; }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .main-nav, .header-cta { display: none; }
  .header-actions { margin-left: auto; }
  .contact-card { padding: 20px; }
  .skill-row { grid-template-columns: 1fr; }
  .dock { display: flex; }
  /* Keep the footer clear of the fixed dock */
  .site-footer { padding-bottom: 72px; }
}