/* ============================================================
   Juan Claro Sanjinez — CV / Portfolio
   Design concept: an engineer's changelog. The page reads like
   well-kept technical documentation — a terminal intro, a
   commit-log career history, dependency-manifest skills — built
   from the person's own working vocabulary (git, semver, code).
   ============================================================ */

:root{
  /* ---- Dark theme (default) ---- */
  --bg: #10141c;
  --surface: #161c26;
  --surface2: #1c2431;
  --text: rgba(255,255,255,.94);
  --muted: rgba(255,255,255,.62);
  --muted-dim: rgba(255,255,255,.42);
  --border: rgba(255,255,255,.09);
  --shadow: 0 20px 60px rgba(0,0,0,.45);

  --accent: #d99a44;       /* warm brass — decorative fills/borders */
  --accent-ink: #f0b768;   /* readable accent text on dark surfaces */
  --accent2: #4fb3a9;      /* muted teal — secondary tag/data colour */
  --accent2-ink: #7fd0c6;

  --diff-add: #7fbf8f;
  --diff-del: #c97b6c;

  --radius: 18px;
  --radius-sm: 12px;
  --container: 1160px;

  --font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --focus: color-mix(in srgb, var(--accent) 55%, white);

  color-scheme: dark;
}

:root[data-theme="light"]{
  --bg: #eef1f5;
  --surface: #ffffff;
  --surface2: #e7ebf1;
  --text: #12161d;
  --muted: rgba(18,22,29,.66);
  --muted-dim: rgba(18,22,29,.44);
  --border: rgba(15,23,35,.11);
  --shadow: 0 20px 50px rgba(15,23,42,.12);

  --accent-ink: #8a5a1e;
  --accent2-ink: #1f7a70;
  --diff-add: #2f7a45;
  --diff-del: #a5402e;
  color-scheme: light;
}

@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg: #eef1f5;
    --surface: #ffffff;
    --surface2: #e7ebf1;
    --text: #12161d;
    --muted: rgba(18,22,29,.66);
    --muted-dim: rgba(18,22,29,.44);
    --border: rgba(15,23,35,.11);
    --shadow: 0 20px 50px rgba(15,23,42,.12);

    --accent-ink: #8a5a1e;
    --accent2-ink: #1f7a70;
    --diff-add: #2f7a45;
    --diff-del: #a5402e;
    color-scheme: light;
  }
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-sans);
  background:
    radial-gradient(1100px 640px at 12% -12%, color-mix(in srgb, var(--accent) 10%, transparent) 0%, transparent 55%),
    radial-gradient(900px 620px at 92% 4%, color-mix(in srgb, var(--accent2) 9%, transparent) 0%, transparent 52%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible{
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 10px;
}

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

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

.skip{
  position: absolute;
  left: -999px;
  top: 10px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  z-index: 999;
}
.skip:focus{ left: 10px; }

/* ============ Header ============ */
.header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header__inner{
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand__mark{
  flex: none;
  width: 38px; height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: -0.02em;
  color: var(--accent-ink);
  background: color-mix(in srgb, var(--accent) 16%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
}
.brand__text{ display: grid; line-height: 1.15; min-width: 0; }
.brand__name{ font-weight: 700; letter-spacing: -0.01em; white-space: nowrap; }
.brand__role{
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--muted);
  font-size: 11.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav{ display: flex; align-items: center; gap: 10px; }
.nav__toggle{
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  cursor: pointer;
}
.burger{
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  position: relative;
}
.burger::before, .burger::after{
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 180ms ease;
}
.burger::before{ top: -6px; }
.burger::after{ top: 6px; }
.nav__toggle[aria-expanded="true"] .burger{ background: transparent; }
.nav__toggle[aria-expanded="true"] .burger::before{ transform: translateY(6px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .burger::after{ transform: translateY(-6px) rotate(-45deg); }

.nav__menu{
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.nav__menu a{
  display: inline-flex;
  color: var(--muted);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12.5px;
  padding: 8px 10px;
  border-radius: 8px;
  white-space: nowrap;
}
.nav__menu a:hover{
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  text-decoration: none;
}
.nav__menu a[aria-current="true"]{
  color: var(--accent-ink);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.nav__menu .btn{ font-family: var(--font-sans); margin-left: 6px; }

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

.theme-toggle{
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.theme-toggle svg{ width: 17px; height: 17px; }
.theme-toggle .i-sun{ display: none; }
:root[data-theme="light"] .theme-toggle .i-moon{ display: none; }
:root[data-theme="light"] .theme-toggle .i-sun{ display: block; }

/* ============ Buttons ============ */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}
.btn svg{ width: 16px; height: 16px; flex: none; }
.btn:hover{ transform: translateY(-1px); text-decoration: none; }
.btn--primary{
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  border-color: color-mix(in srgb, var(--accent) 38%, var(--border));
  color: var(--accent-ink);
}
.btn--primary:hover{ background: color-mix(in srgb, var(--accent) 28%, transparent); }
.btn--secondary:hover{
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-color: color-mix(in srgb, var(--accent) 24%, var(--border));
}
.btn--ghost{ background: var(--surface); }
.btn--small{ padding: 8px 12px; font-size: 13px; }

.kicker{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px 0;
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
}
.kicker::before{ content: "#"; opacity: .7; }

.section{ padding: 76px 0; scroll-margin-top: 84px; }
.section__head{ margin-bottom: 28px; max-width: 68ch; }
.section__head h2{
  margin: 0 0 8px 0;
  letter-spacing: -0.02em;
  font-size: clamp(26px, 3vw, 32px);
}
.muted{ color: var(--muted); }
.small{ font-size: 13px; }

/* ============ Cards ============ */
.card{
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.card__title{
  margin: 0 0 10px 0;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.card__actions{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.divider{
  border: 0;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

/* ============ Hero ============ */
.hero{ padding: 52px 0 24px 0; }
.hero__grid{
  display: grid;
  grid-template-columns: 1.28fr 0.72fr;
  gap: 22px;
  align-items: start;
}
.hero__title{
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(32px, 4.4vw, 50px);
  letter-spacing: -0.03em;
}
.hero__subtitle{
  margin: 10px 0 14px 0;
  font-weight: 700;
  color: var(--muted);
  font-size: 16px;
}
.hero__lead{
  margin: 0 0 20px 0;
  color: var(--muted);
  max-width: 62ch;
}
.hero__cta{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 26px;
}

/* Terminal signature element */
.terminal{
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.terminal__bar{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.terminal__dot{
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border);
}
.terminal__dot:nth-child(1){ background: var(--diff-del); opacity: .75; }
.terminal__dot:nth-child(2){ background: var(--accent); opacity: .8; }
.terminal__dot:nth-child(3){ background: var(--diff-add); opacity: .75; }
.terminal__title{
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.terminal__body{
  padding: 18px 20px 20px;
  font-family: var(--font-mono);
  font-size: 13.5px;
}
.terminal__line, .terminal__out{
  margin: 0 0 4px 0;
  animation: lineIn .45s ease both;
  animation-delay: var(--d, 0s);
}
.terminal__line{ color: var(--muted); }
.terminal__prompt{ color: var(--accent-ink); margin-right: 8px; }
.terminal__out{
  margin: 0 0 14px 0;
  color: var(--text);
  padding-left: 20px;
}
.terminal__status{ display: flex; align-items: center; gap: 8px; }
.status-dot{
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--diff-add);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--diff-add) 22%, transparent);
  flex: none;
}
.cursor{
  display: inline-block;
  width: 8px; height: 15px;
  background: var(--accent-ink);
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}

@keyframes lineIn{ from{ opacity: 0; transform: translateY(5px); } to{ opacity: 1; transform: translateY(0); } }
@keyframes blink{ 0%, 49%{ opacity: 1; } 50%, 100%{ opacity: 0; } }

.meta{
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 10px;
}
.meta__item{
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}
.meta__label{
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--muted);
}
.meta__value{ display:block; margin-top: 6px; font-weight: 700; font-size: 14px; word-break: break-word; }

/* Hero aside profile card */
.hero__right{ display: grid; gap: 16px; }
.profile-card{ text-align: left; }
.profile-card__top{
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.profile-card__photo{
  width: 72px; height: 72px;
  border-radius: 16px;
  object-fit: cover;
  border: 1px solid var(--border);
  flex: none;
}
.profile-card__name{ font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.profile-card__role{ color: var(--muted); font-size: 13px; margin-top: 2px; }

.dl{ margin: 0; display: grid; gap: 10px; }
.dl__row dt{
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--muted);
}
.dl__row dd{ margin: 4px 0 0 0; font-weight: 600; }

.note{ margin: 14px 0 0 0; color: var(--muted); font-size: 13.5px; }

/* ============ Chips / pills ============ */
.chips{ display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip{
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
}
.pill{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 10%, var(--surface2));
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border));
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
}

/* ============ Changelog (experience) ============ */
.changelog{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  border-left: 1px solid var(--border);
  padding-left: 0;
}
.changelog__item{
  position: relative;
  padding: 20px 20px 20px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
}
.changelog__item::before{
  content: "";
  position: absolute;
  left: -1px; top: 26px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transform: translateX(-50%);
}
.changelog__head{
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.changelog__id{ display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.changelog__version{
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-ink);
  font-size: 14px;
}
.changelog__date{
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 12.5px;
}
.changelog__title{
  margin: 10px 0 2px 0;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.changelog__company{ color: var(--accent2-ink); font-weight: 600; }
.changelog__note{ margin: 2px 0 0 0; color: var(--muted); font-size: 13px; }

.changelog__legend{
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 10px;
}
.changelog__legend .pill{ padding: 4px 10px; font-size: 11.5px; }

/* ============ Lists ============ */
.list{
  margin: 12px 0 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.list li{ margin: 7px 0; }
.list li::marker{ color: var(--accent-ink); }

/* ============ Manifest (skills) ============ */
.grid{ display: grid; gap: 14px; }
.grid--2{ grid-template-columns: 1fr 1fr; }
.grid--3{ grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid--4{ grid-template-columns: repeat(4, minmax(0,1fr)); }

.manifest{
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 12.8px;
  line-height: 1.85;
  overflow-x: auto;
  white-space: pre;
}
.manifest .cm{ color: var(--muted-dim); font-style: italic; }
.manifest .key{ color: var(--accent2-ink); }
.manifest .str{ color: var(--text); }
.manifest .punc{ color: var(--muted); }
.manifest__filename{
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}
.manifest__filename svg{ width: 14px; height: 14px; color: var(--accent-ink); }

/* ============ Projects (MetaPlot) ============ */
.project-intro{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 18px;
}
.project-intro p{ margin: 0; color: var(--muted); max-width: 62ch; }

.modgrid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 12px;
}
.modcard{
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  transition: transform 150ms ease, border-color 150ms ease;
}
.modcard:hover{ transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 30%, var(--border)); }
.modcard__name{
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent-ink);
  margin-bottom: 8px;
  word-break: break-word;
}
.modcard__name .slash{ color: var(--muted-dim); }
.modcard__desc{ margin: 0; color: var(--muted); font-size: 13px; }

/* ============ Education ============ */
.edu{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.edu__item{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  flex-wrap: wrap;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
}
.edu__item--accent{ border-color: color-mix(in srgb, var(--accent2) 30%, var(--border)); }
.edu__title{ font-weight: 700; }
.edu__org{ color: var(--muted); margin-top: 2px; }
.edu__extra{ margin: 8px 0 0 0; color: var(--muted); font-size: 13px; max-width: 60ch; }
.two{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ============ Certificates ============ */
.cert-main{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  flex-wrap: wrap;
}
.cert-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}
.cert-list li{
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 4px;
  border-bottom: 1px dashed var(--border);
  flex-wrap: wrap;
}
.cert-list li:last-child{ border-bottom: 0; }
.cert-list .cert-name{ font-weight: 600; }
.cert-link{ display: inline; }
.cert-link:hover{ color: var(--accent-ink); text-decoration: underline; }
.cert-list .cert-issuer{ color: var(--muted); font-size: 13px; }
.cert-list .cert-date{
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 12.5px;
  white-space: nowrap;
}


/* ============ Social Sites ============ */
.social-grid{ align-items: stretch; }
.social-card{
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}
.social-card:hover{
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  background: color-mix(in srgb, var(--surface2) 92%, transparent);
  text-decoration: none;
}
.social-card__name{
  font-weight: 700;
  color: var(--accent-ink);
}
.social-card__url{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  overflow-wrap: anywhere;
}

/* ============ Contact ============ */
.contact__grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}
.contact__actions{
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

/* ============ Footer ============ */
.footer{
  border-top: 1px solid var(--border);
  padding: 20px 0 30px 0;
}
.footer__inner{
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.footer__links{ display: flex; gap: 10px; align-items: center; }
.sep{ opacity: .5; }

/* ============ Responsive ============ */
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
  .meta{ grid-template-columns: repeat(2, 1fr); }
  .grid--2{ grid-template-columns: 1fr; }
  .grid--3{ grid-template-columns: 1fr; }
  .grid--4{ grid-template-columns: repeat(2,1fr); }
  .two{ grid-template-columns: 1fr; }
  .contact__grid{ grid-template-columns: 1fr; }
  .modgrid{ grid-template-columns: repeat(2,1fr); }
  .brand__role{ display: none; }

  .nav__toggle{ display: inline-flex; }
  .nav__menu{
    display: none;
    position: absolute;
    right: 20px;
    left: 20px;
    top: 64px;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
  }
  .nav__menu a{ padding: 12px 10px; }
  .nav__menu .btn{ margin: 6px 4px 2px; justify-content: center; }
  .nav__menu.open{ display: flex; }
}

@media (max-width: 620px){
  .meta{ grid-template-columns: 1fr 1fr; }
  .modgrid{ grid-template-columns: 1fr; }
  .changelog__head{ flex-direction: column; align-items: flex-start; }
  .section{ padding: 56px 0; }
  .cert-list li{ flex-direction: column; gap: 2px; }
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ transition: none !important; animation: none !important; }
}

/* ============ Print ============ */
@media print{
  .header, .hero__cta, .btn, .nav__toggle, .theme-toggle{ display: none !important; }
  body{ background: white; color: #111; }
  .card, .changelog__item, .modcard, .edu__item{ box-shadow: none; }
}