/* ==========================================================================
   CJAK — shared design tokens + base styles
   IT & Security Consulting · personal blog
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* surfaces */
  --bg:        oklch(15% 0.014 250);
  --bg-alt:    oklch(17.5% 0.016 250);
  --surface:   oklch(20% 0.017 250);
  --surface-2: oklch(23.5% 0.019 250);

  /* text */
  --fg:        oklch(95% 0.004 250);
  --muted:     oklch(70% 0.018 250);
  --muted-2:   oklch(60% 0.016 250);

  /* borders — semi-transparent white on dark surfaces */
  --border:        oklch(100% 0 0 / 0.09);
  --border-strong:  oklch(100% 0 0 / 0.18);

  /* one accent, used sparingly */
  --accent:     oklch(74% 0.15 165);
  --accent-dim: oklch(74% 0.15 165 / 0.14);
  --accent-ink: oklch(16% 0.03 165);

  /* semantic */
  --danger:  oklch(66% 0.19 25);
  --success: var(--accent);

  /* type */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --fs-display: clamp(2.25rem, 1.5rem + 3vw, 4rem);
  --fs-h1:      clamp(1.875rem, 1.4rem + 1.6vw, 2.75rem);
  --fs-h2:      clamp(1.4rem, 1.2rem + 0.8vw, 1.875rem);
  --fs-h3:      clamp(1.15rem, 1.05rem + 0.4vw, 1.375rem);
  --fs-body:    1rem;
  --fs-small:   0.875rem;
  --fs-caption: 0.75rem;

  --container: 1160px;
  --pad: clamp(1.25rem, 4vw, 3rem);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-pill: 999px;

  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-emphasized: cubic-bezier(0.2, 0.9, 0.2, 1);
  --dur-fast: 160ms;
  --dur-base: 280ms;
  --dur-slow: 520ms;
}

/* ---- reset ------------------------------------------------------------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

html {
  background: var(--bg);
  color-scheme: dark;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--accent-dim); color: var(--fg); }

:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--pad);
}

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

section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section-alt { background: var(--bg-alt); }

/* ---- type utilities ------------------------------------------------------ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; }
h1 { font-size: var(--fs-display); line-height: 1.05; letter-spacing: -0.025em; }
h2 { font-size: var(--fs-h2); line-height: 1.15; letter-spacing: -0.015em; }
h3 { font-size: var(--fs-h3); line-height: 1.25; letter-spacing: -0.01em; }

.lede {
  font-size: clamp(1.05rem, 1rem + 0.3vw, 1.2rem);
  line-height: 1.6;
  color: var(--muted);
  max-width: 56ch;
}

.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }

/* ---- buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  height: 48px;
  padding-inline: 1.4em;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 550;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-standard),
    background-color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }
.btn[disabled]:active { transform: none; }

.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: oklch(80% 0.15 165); }

.btn-ghost { background: transparent; color: var(--fg); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--fg); }

/* ---- badges / pills --------------------------------------------------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  height: 34px;
  padding-inline: 0.9em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
}
.pill-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px oklch(74% 0.15 165 / 0.18);
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding-inline: 0.7em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.tag.is-draft { color: var(--muted-2); border-style: dashed; }

/* ---- nav --------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(15% 0.014 250 / 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand-mark { width: 26px; height: 26px; object-fit: contain; flex-shrink: 0; }
.brand .cursor {
  display: inline-block;
  color: var(--accent);
}
.terminal .cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1.6s steps(1) infinite;
}
@keyframes blink { 0%, 46% { opacity: 1; } 54%, 100% { opacity: 0; } }

.nav-right {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 2vw, 2.5rem);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2vw, 2.25rem);
  font-size: var(--fs-small);
  font-weight: 500;
}
.nav-links a { color: var(--muted); transition: color var(--dur-fast) var(--ease-standard); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--fg); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); color: var(--fg);
}
.nav-toggle svg { width: 20px; height: 20px; }

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  padding-block: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
}
.nav-mobile a {
  display: block;
  padding: 0.85rem 0.25rem;
  font-size: 1rem;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.nav-mobile a:last-child { border-bottom: 0; }
.nav.is-open .nav-mobile { display: flex; }

/* ---- footer -------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 3rem;
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-links { display: flex; gap: 1.75rem; flex-wrap: wrap; }
.footer-links a {
  color: var(--muted);
  font-size: var(--fs-small);
  transition: color var(--dur-fast) var(--ease-standard);
}
.footer-links a:hover { color: var(--fg); }
.footer-note {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--muted-2);
  margin-top: 1.5rem;
}

/* ---- cards --------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 2vw, 2rem);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---- hero ---------------------------------------------------------------- */
.hero { position: relative; overflow: hidden; padding-block: clamp(3.5rem, 9vw, 7rem) clamp(3rem, 7vw, 5rem); }
.hero-bg {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 150%;
  background-image: radial-gradient(var(--border-strong) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.6;
  -webkit-mask-image: radial-gradient(ellipse 65% 55% at 72% 28%, black 0%, transparent 72%);
  mask-image: radial-gradient(ellipse 65% 55% at 72% 28%, black 0%, transparent 72%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-actions { display: flex; gap: 0.9rem; margin-top: 2.1rem; flex-wrap: wrap; }

/* ---- terminal widget ---------------------------------------------------- */
.terminal {
  background: oklch(12% 0.012 250);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 30px 60px -20px oklch(8% 0.01 250 / 0.6);
}
.terminal-head {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
}
.terminal-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border-strong); }
.terminal-title {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted-2);
  letter-spacing: 0.04em;
}
.terminal-body {
  padding: 1.5rem 1.4rem 1.7rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.85;
  min-height: 9.5rem;
}
.terminal-body [data-line] { display: block; white-space: pre-wrap; }
.terminal-body .out { color: var(--fg); font-weight: 500; }
.terminal-body .cmd { color: var(--muted); }

/* ---- reveal-on-scroll ------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity var(--dur-base) linear,
    transform var(--dur-slow) var(--ease-emphasized);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal.is-visible,
.reveal[data-reveal-ready="true"] { will-change: auto; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .terminal .cursor { animation: none; }
  .btn,
  .nav-links a,
  .filter-btn,
  .section-head .view-all,
  .footer-links a,
  .back-link { transition: none; }
  .card:hover,
  .terminal:hover { transform: none; }
}

/* ---- about / sidekick ---------------------------------------------------- */
.photo-frame {
  aspect-ratio: 1 / 1;
}
.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ---- service / blog cards -------------------------------------------- */
.icon-box {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  margin-bottom: 1.1rem;
}
.icon-box svg { width: 21px; height: 21px; }

.post-card { display: flex; flex-direction: column; gap: 0.85rem; height: 100%; }
.post-meta { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.post-card h3 { margin-top: 0.2rem; }
.post-card .lede { font-size: var(--fs-small); }
.post-card .read-more { margin-top: auto; font-size: var(--fs-small); font-weight: 550; color: var(--accent); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  flex-wrap: wrap;
}
.section-head .view-all {
  font-size: var(--fs-small);
  font-weight: 550;
  color: var(--muted);
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-standard);
}
.section-head .view-all:hover { color: var(--fg); }

.filter-group { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-bottom: clamp(2rem, 4vw, 2.75rem); }
.filter-btn {
  height: 38px;
  padding-inline: 1em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--muted);
  font-size: var(--fs-small);
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard),
    background-color var(--dur-fast) var(--ease-standard);
}
.filter-btn:hover { color: var(--fg); border-color: var(--fg); }
.filter-btn[aria-pressed="true"] {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent);
}

.post-list { display: grid; grid-template-columns: 1fr; gap: 1.1rem; }
.post-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.6rem;
}
.post-row .post-meta { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
.post-row .read-more { white-space: nowrap; }
@media (max-width: 700px) {
  .post-row { grid-template-columns: 1fr; }
  .post-row .read-more { justify-self: start; }
}

.cta-band {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}
.cta-band .btn { margin-top: 1.8rem; }

/* ---- article prose ----------------------------------------------------- */
.prose { max-width: 65ch; }
.prose > * + * { margin-top: 1.4rem; }
.prose h2 { margin-top: 2.6rem; font-size: var(--fs-h2); }
.prose p { line-height: 1.75; color: var(--fg); }
.prose blockquote {
  margin: 0;
  padding-left: 1.25rem;
  border-left: 2px solid var(--accent);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.4;
}
.prose .checklist {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.95;
  list-style: none;
}
.prose .checklist li { display: flex; gap: 0.65rem; }
.prose .checklist li::before { content: '\203A'; color: var(--accent); }

.post-hero {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  max-width: 65ch;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--muted);
  font-size: var(--fs-small);
  transition: color var(--dur-fast) var(--ease-standard);
}
.back-link:hover { color: var(--fg); }

/* ---- forms --------------------------------------------------------------- */
.form-grid { display: flex; flex-direction: column; gap: 1.3rem; }
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label { font-size: var(--fs-small); font-weight: 550; }

.input {
  height: 48px;
  padding-inline: 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  width: 100%;
}
textarea.input { height: auto; min-height: 150px; padding-block: 0.8rem; resize: vertical; line-height: 1.6; }
.input::placeholder { color: var(--muted-2); }
.input:focus-visible { outline: 2px solid var(--fg); outline-offset: 1px; border-color: var(--fg); }
.input[aria-invalid="true"] { border-color: var(--danger); }
select.input { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 22px) center, calc(100% - 16px) center; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; }

.field-error { font-size: var(--fs-caption); color: var(--danger); min-height: 1.1em; }
.form-status {
  min-height: 1.2em;
  font-size: var(--fs-caption);
  color: var(--muted);
}

.form-success {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}
.form-success[hidden] { display: none; }
.form-note {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--muted-2);
  line-height: 1.7;
}

/* ---- responsive nav breakpoint ---------------------------------------- */
@media (max-width: 760px) {
  .nav-right { display: none; }
  .nav-toggle { display: flex; }
}

@media (hover: hover) and (pointer: fine) {
  .card,
  .terminal {
    transition:
      border-color var(--dur-fast) var(--ease-standard),
      transform var(--dur-fast) var(--ease-standard);
  }

  .card:hover,
  .terminal:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
  }
}