/* ─── Tokens ────────────────────────────────────────────────── */
@font-face {
  font-family: 'Cofo Sans';
  src: url('fonts/CofoSans-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Cofo Sans';
  src: url('fonts/CofoSans-Bold.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg:           #FAFAF8;
  --surface:      #FFFFFF;
  --dark:         #0D0D0C;
  --muted:        #8C8C88;
  --accent:       #1B6B40;
  --accent-light: #EBF5EF;
  --accent-mid:   #2A9158;
  --border:       #E8E8E5;

  --r: 14px;
  --maxw: 1240px;

  --f-hero:   clamp(3rem, 8vw, 6rem);
  --f-h2:     clamp(1.75rem, 3.5vw, 2.75rem);
  --f-h3:     1.25rem;
  --f-body:   1rem;
  --f-sm:     0.8125rem;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  7rem;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-norm: 300ms;
}

/* ─── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Cofo Sans', system-ui, sans-serif;
  font-size: var(--f-body);
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ─── Layout helpers ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

/* ─── Nav ────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 200;
  background: rgba(250, 250, 248, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-norm), box-shadow var(--dur-norm);
}
.nav.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 20px rgba(13, 13, 12, 0.06);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav__logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.nav__logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}
.nav__links a {
  font-size: var(--f-sm);
  font-weight: 400;
  color: var(--muted);
  transition: color var(--dur-fast);
  letter-spacing: 0.02em;
}
.nav__links a:hover { color: var(--dark); }

/* ─── Hero ───────────────────────────────────────────────────── */
.hero {
  padding-block-start: calc(64px + var(--space-xl));
  padding-block-end: var(--space-xl);
  border-bottom: 1px solid var(--border);
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--f-sm);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.hero__eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}
.hero__name {
  font-size: var(--f-hero);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--dark);
  margin-bottom: var(--space-md);
}
.hero__name em {
  font-style: normal;
  color: var(--accent);
}
.hero__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: end;
}
.hero__bio {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--muted);
  line-height: 1.7;
  max-width: 42ch;
}
.hero__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-end;
}
.hero__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: var(--f-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.hero__contact {
  font-size: var(--f-sm);
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.hero__contact a {
  color: var(--accent);
  font-weight: 700;
  transition: opacity var(--dur-fast);
}
.hero__contact a:hover { opacity: 0.75; }

/* ─── Section header ─────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}
.section-num {
  font-size: var(--f-sm);
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}
.section-title {
  font-size: var(--f-h2);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--dark);
}

/* ─── Projects ───────────────────────────────────────────────── */
.projects { padding-block: var(--space-xl); }
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

/* ─── Card ───────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  transition: transform var(--dur-norm) var(--ease-out),
              box-shadow var(--dur-norm) var(--ease-out),
              border-color var(--dur-norm);
  position: relative;
}
.card::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--dur-norm);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(13, 13, 12, 0.1);
  border-color: rgba(27, 107, 64, 0.25);
}
.card:hover::before { opacity: 1; }
.card:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card__head {
  padding: var(--space-md) var(--space-md) var(--space-sm);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
}
.card__title-group { flex: 1; }
.card__title {
  font-size: var(--f-h3);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 0.25rem;
  line-height: 1.25;
}
.card__subtitle {
  font-size: var(--f-sm);
  color: var(--muted);
  line-height: 1.4;
}
.card__live-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4rem 0.875rem;
  border-radius: 100px;
  background: var(--accent);
  color: #fff;
  font-size: var(--f-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: background var(--dur-fast), transform var(--dur-fast);
  flex-shrink: 0;
  white-space: nowrap;
}
.card__live-btn:hover {
  background: var(--accent-mid);
  transform: scale(1.04);
}
.card__live-btn svg {
  width: 12px;
  height: 12px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ─── Accordion ──────────────────────────────────────────────── */
.card__accordion {
  border-top: 1px solid var(--border);
}
.card__accordion details {
  border-top: 1px solid var(--border);
}
.card__accordion details:first-child { border-top: none; }
.card__accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem var(--space-md);
  font-size: var(--f-sm);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: color var(--dur-fast), background var(--dur-fast);
  gap: var(--space-sm);
}
.card__accordion summary::-webkit-details-marker { display: none; }
.card__accordion summary:hover {
  color: var(--dark);
  background: var(--bg);
}
.card__accordion details[open] summary { color: var(--accent); }
.summary-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform var(--dur-norm) var(--ease-out);
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
details[open] .summary-icon { transform: rotate(45deg); }

.accordion-body {
  padding: 0 var(--space-md) var(--space-md);
  font-size: var(--f-sm);
  color: var(--muted);
  line-height: 1.7;
}
.accordion-body p { margin-bottom: 0.5rem; }
.accordion-body p:last-child { margin-bottom: 0; }

.card__tags {
  padding: var(--space-sm) var(--space-md) var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

/* ─── Repos ──────────────────────────────────────────────────── */
.repos { padding-block: var(--space-xl); border-top: 1px solid var(--border); }
.repos-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--f-sm);
}
.repos-table th {
  text-align: left;
  padding: 0.625rem var(--space-sm);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.repos-table td {
  padding: 1rem var(--space-sm);
  color: var(--dark);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.repos-table tr:last-child td { border-bottom: none; }
.repos-table tr:hover td { background: var(--accent-light); }
.repos-table .col-name { font-weight: 700; }
.repos-table .col-host {
  color: var(--muted);
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.75rem;
}
.repos-table .col-status { text-align: right; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.625rem;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.badge--ok {
  background: var(--accent-light);
  color: var(--accent);
}
.badge--ok::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.badge--rsync {
  background: #F5F0FF;
  color: #6B4FB5;
}
.badge--rsync::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6B4FB5;
  display: inline-block;
}

/* ─── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--accent);
  color: #fff;
  padding-block: var(--space-lg);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.footer__brand {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}
.footer__tagline {
  font-size: var(--f-sm);
  opacity: 0.7;
  margin-top: 0.25rem;
}
.footer__contact {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.footer__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: 100px;
  font-weight: 700;
  font-size: var(--f-sm);
  color: #fff;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.footer__link:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}
.footer__copy {
  width: 100%;
  font-size: 0.75rem;
  opacity: 0.45;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.15);
}

/* ─── Scroll animations ──────────────────────────────────────── */
[data-anim] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--d, 0ms);
}
[data-anim].in {
  opacity: 1;
  transform: translateY(0);
}
[data-anim="from-left"] {
  transform: translateX(-28px);
}
[data-anim="from-left"].in {
  transform: translateX(0);
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .hero__split { grid-template-columns: 1fr; }
  .hero__meta { align-items: flex-start; }
  .hero__stack { justify-content: flex-start; }
  .projects-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer__contact { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .card__head { flex-direction: column; }
  .card__live-btn { align-self: flex-start; }
  .repos-table .col-host { display: none; }
}

/* ─── Focus styles ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}