/* ==========================================================================
   Ivan Ball-llovera - personal site
   Single stylesheet. No build step. Light + dark via CSS custom properties.
   ========================================================================== */

/* ----- Design tokens ----- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Cascadia Code", Consolas, "Liberation Mono", Menlo, monospace;

  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --surface: #ffffff;
  --surface-alt: #eef2f7;
  --border: #d9e0e8;
  --text: #16202c;
  --text-muted: #56657a;
  --accent: #2257c7;
  --accent-strong: #16409a;
  --accent-contrast: #ffffff;
  --accent-soft: #e7eefb;
  --shadow: 0 1px 2px rgba(16, 32, 44, 0.06), 0 6px 20px rgba(16, 32, 44, 0.07);
  --shadow-sm: 0 1px 2px rgba(16, 32, 44, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1100px;
  --maxw-prose: 760px;
}

:root[data-theme="dark"] {
  --bg: #0e151f;
  --bg-alt: #131c28;
  --surface: #18222f;
  --surface-alt: #1f2c3c;
  --border: #2b3a4d;
  --text: #e8eef6;
  --text-muted: #a3b1c4;
  --accent: #6ea0ff;
  --accent-strong: #9cc0ff;
  --accent-contrast: #0b1019;
  --accent-soft: #1c2c47;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 22px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e151f;
    --bg-alt: #131c28;
    --surface: #18222f;
    --surface-alt: #1f2c3c;
    --border: #2b3a4d;
    --text: #e8eef6;
    --text-muted: #a3b1c4;
    --accent: #6ea0ff;
    --accent-strong: #9cc0ff;
    --accent-contrast: #0b1019;
    --accent-soft: #1c2c47;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 22px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  }
}

/* ----- Reset / base ----- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--text); }
h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }

/* Inline links are underlined by default so they are distinguishable without relying
   on color alone (WCAG: link-in-text-block). Chrome components opt out below. */
a { color: var(--accent); text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
.brand, .nav-links a, .btn, .footer-links a, .contact-card, .skip-link, .adr { text-decoration: none; }
.brand:hover, .nav-links a:hover, .btn:hover, .footer-links a:hover, .contact-card:hover, .adr:hover { text-decoration: none; }

img { max-width: 100%; height: auto; display: block; }
code, kbd { font-family: var(--font-mono); font-size: 0.92em; }

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

/* ----- Layout helpers ----- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 4rem 0; }
.section--alt { background: var(--bg-alt); }
.prose { max-width: var(--maxw-prose); }
.muted { color: var(--text-muted); }
.center { text-align: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ----- Header / nav ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 64px;
}
.brand {
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: 9px;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: -0.03em;
}
.nav-links { display: flex; align-items: center; gap: 0.35rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-sm);
}
.nav-links a:hover { color: var(--text); background: var(--surface-alt); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }

.nav-tools { display: flex; align-items: center; gap: 0.4rem; }
.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}
.icon-btn:hover { background: var(--surface-alt); }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: inline; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .moon { display: inline; }
}

.nav-toggle { display: none; }

@media (max-width: 760px) {
  .nav-toggle { display: inline-grid; }
  .nav-links {
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1rem 1rem;
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 0.6rem; font-size: 1rem; }
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: var(--accent-contrast); }
.btn--primary:hover { background: var(--accent-strong); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface-alt); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ----- Hero ----- */
.hero { padding: 4.5rem 0 3.5rem; }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.5rem;
  align-items: center;
}
.hero h1 { margin: 0 0 0.6rem; }
.hero .role { font-size: 1.25rem; font-weight: 600; color: var(--accent); margin: 0 0 1rem; }
.hero .lede { font-size: 1.12rem; color: var(--text-muted); max-width: 60ch; }
.avatar {
  width: 168px; height: 168px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--accent), var(--accent-strong));
  color: var(--accent-contrast);
  display: grid; place-items: center;
  font-size: 3.4rem; font-weight: 800; letter-spacing: -0.04em;
  box-shadow: var(--shadow);
  flex-shrink: 0;
}
@media (max-width: 760px) {
  .hero-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .avatar { width: 120px; height: 120px; font-size: 2.4rem; order: -1; }
}

/* ----- Stat strip ----- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.stats--3 { grid-template-columns: repeat(3, 1fr); }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat .num { font-size: 1.9rem; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; }
.stat .label { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.2rem; }
@media (max-width: 620px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ----- Generic card grid ----- */
.grid { display: grid; gap: 1.25rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.card h3 { margin: 0 0 0.5rem; }
.card p { color: var(--text-muted); margin-bottom: 1rem; }
.card .card-foot { margin-top: auto; }
.card--link { transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease; }
.card--link:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }

.section-head { margin-bottom: 2rem; }
.section-head h2 { margin: 0 0 0.4rem; }
.section-head p { color: var(--text-muted); margin: 0; max-width: 65ch; }

/* ----- Tags / badges ----- */
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; margin: 0; padding: 0; }
.tag {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.tag--accent { background: var(--accent-soft); color: var(--accent-strong); border-color: transparent; }

/* ----- Resume timeline ----- */
.timeline { border-left: 2px solid var(--border); margin-left: 0.4rem; padding-left: 1.6rem; }
.job { position: relative; padding-bottom: 2rem; }
.job::before {
  content: "";
  position: absolute;
  left: -1.6rem;
  top: 0.45rem;
  transform: translateX(-50%);
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
}
.job:last-child { padding-bottom: 0; }
.job h3 { margin: 0; }
.job .job-meta { color: var(--text-muted); font-size: 0.92rem; margin: 0.15rem 0 0.7rem; font-weight: 600; }
.job ul { margin: 0; padding-left: 1.1rem; }
.job li { margin-bottom: 0.45rem; color: var(--text); }

/* Definition-style skill list */
.deflist { display: grid; gap: 1rem; }
.deflist .row { display: grid; grid-template-columns: 200px 1fr; gap: 1rem; }
.deflist dt { font-weight: 700; color: var(--text); }
.deflist dd { margin: 0; color: var(--text-muted); }
@media (max-width: 620px) { .deflist .row { grid-template-columns: 1fr; gap: 0.2rem; } }

/* ----- Package / ADR pills ----- */
.pill-list { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; padding: 0; margin: 0; }
.pill {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.adr-list { display: grid; gap: 0.6rem; }
.adr {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: baseline;
  padding: 0.6rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.adr .adr-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 0.85rem;
}
.adr .adr-title { font-weight: 600; color: var(--text); }
.adr .adr-sum { color: var(--text-muted); display: block; font-size: 0.92rem; font-weight: 400; }
/* Rows are links into the full ADR pages */
a.adr { transition: transform 0.1s ease, box-shadow 0.1s ease, border-color 0.1s ease; }
a.adr:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--shadow-sm);
}
a.adr:hover .adr-title { color: var(--accent); }

/* ----- Article cards (Writing) ----- */
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.75rem; }
.filter-btn {
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
}
.filter-btn:hover { background: var(--surface-alt); color: var(--text); }
.filter-btn[aria-pressed="true"] { background: var(--accent); color: var(--accent-contrast); border-color: transparent; }

.article-card { padding: 0; overflow: hidden; }
.article-card .thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--accent-soft), var(--surface-alt));
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--border);
}
.article-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-card .thumb .thumb-num {
  font-size: 2.4rem; font-weight: 800; color: var(--accent); opacity: 0.55; letter-spacing: -0.03em;
}
.article-card .body { padding: 1.2rem 1.25rem; display: flex; flex-direction: column; flex: 1; }
.article-card .body h3 { font-size: 1.08rem; margin: 0.4rem 0 0.5rem; }
.article-card .body p { font-size: 0.95rem; }
.article-card .kicker { font-size: 0.75rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.coming-soon {
  font-size: 0.82rem; font-weight: 600; color: var(--text-muted);
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.count-note { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.25rem; }

/* ----- Callout ----- */
.callout {
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-radius: var(--radius);
  padding: 1.5rem;
}
.callout p:last-child { margin-bottom: 0; }

/* ----- Contact methods ----- */
.contact-methods { display: grid; gap: 1rem; grid-template-columns: repeat(3, 1fr); }
.contact-card {
  display: flex; align-items: center; gap: 0.9rem;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.contact-card:hover { text-decoration: none; border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.contact-card .ic { font-size: 1.4rem; width: 44px; height: 44px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-strong); border-radius: 10px; flex-shrink: 0; }
.contact-card .label { font-size: 0.8rem; color: var(--text-muted); }
.contact-card .value { font-weight: 600; color: var(--text); word-break: break-word; }
@media (max-width: 620px) { .contact-methods { grid-template-columns: 1fr; } }

/* ----- Figure ----- */
figure { margin: 0; }
.shot {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
figcaption { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.5rem; text-align: center; }

/* ----- Footer ----- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 2.5rem 0;
}
.footer-grid { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; }
.footer-links { display: flex; gap: 1.1rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-weight: 600; font-size: 0.92rem; }
.footer-links a:hover { color: var(--text); }
.footer-meta { color: var(--text-muted); font-size: 0.88rem; }

/* ----- Utility spacing ----- */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.lead-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.lead-list li { display: grid; grid-template-columns: auto 1fr; gap: 0.6rem; align-items: baseline; color: var(--text); }
.lead-list .check { color: var(--accent); font-weight: 800; }

/* ----- Print (résumé PDF export) ----- */
@media print {
  /* Force clean, ink-friendly light rendering regardless of the active theme */
  :root, :root[data-theme="dark"], :root[data-theme="light"] {
    --bg: #fff; --bg-alt: #fff; --surface: #fff; --surface-alt: #fff;
    --border: #c9d2dc; --text: #14202c; --text-muted: #38465a;
    --accent: #14409a; --accent-strong: #0f2f72; --accent-contrast: #fff; --accent-soft: #fff;
    --shadow: none; --shadow-sm: none;
  }
  @page { size: Letter; margin: 0.5in 0.6in; }
  html { font-size: 12.5px; }
  body { background: #fff; color: var(--text); line-height: 1.4; display: block; min-height: 0; }

  /* Hide site chrome and screen-only controls */
  .skip-link, .site-header, .site-footer, .nav-tools, .nav-toggle, .btn-row { display: none !important; }

  /* Full-bleed content */
  .container { max-width: none; padding: 0; }
  main { padding: 0 !important; }
  .section, .section--alt { padding: 0.35rem 0 !important; background: #fff !important; }
  .section:first-of-type { padding-top: 0 !important; }

  /* Headings tuned for paper */
  h1 { font-size: 1.7rem; margin: 0 0 0.2rem; }
  h2 { font-size: 1.05rem; margin: 0.55rem 0 0.5rem; padding-bottom: 0.15rem; border-bottom: 1px solid var(--border); }
  h3 { font-size: 0.98rem; }
  .role { font-size: 1rem !important; }
  p, li, dd, dt { font-size: 0.86rem; }

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

  /* Keep each job / card / row intact across page breaks */
  .timeline { border-left: none; margin-left: 0; padding-left: 0; }
  .job { padding-bottom: 0.7rem; }
  .job::before { display: none; }
  .job ul { padding-left: 1.05rem; }
  .job li { margin-bottom: 0.2rem; }
  .job, .row, .card, .deflist .row { break-inside: avoid; page-break-inside: avoid; }
  .deflist .row { grid-template-columns: 170px 1fr; }
  .grid--2 { grid-template-columns: 1fr 1fr; }
  .card { border: none; padding: 0; box-shadow: none; }
}