/* ============================================================
   Francisco Antonio — Security Research Portfolio
   Theme: minimalist research terminal · amber phosphor on slate
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg:        #0b0e11;  /* page background — deep slate, not pure black */
  --bg-raised: #10151b;  /* cards, terminal */
  --bg-inset:  #0d1116;  /* code-ish insets */
  --line:      #1d2630;  /* hairline borders */
  --line-soft: #161d25;

  --ink:       #d9e0e8;  /* primary text */
  --ink-dim:   #8b96a3;  /* secondary text */
  --ink-faint: #5d6873;  /* labels, metadata */

  --amber:     #e7ab4f;  /* phosphor accent */
  --amber-dim: #b88438;
  --amber-glow: rgba(231, 171, 79, 0.14);

  --ok:        #84bd8f;  /* status: positive */
  --steel:     #7fa3bf;  /* status: neutral/closed */

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

  --maxw: 1080px;
  --maxw-narrow: 760px;
  --radius: 4px;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px; /* keep anchors clear of sticky header */
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; }

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; }
ul, ol, dl { margin: 0; padding: 0; }
li { list-style: none; }

a {
  color: var(--amber);
  text-decoration: none;
}
a:hover { text-decoration: underline; text-underline-offset: 3px; }

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

::selection { background: var(--amber); color: #14110a; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: var(--maxw-narrow); }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--amber);
  color: #14110a;
  font-family: var(--mono);
  font-size: 0.85rem;
  border-radius: var(--radius);
  transition: top 0.15s ease;
}
.skip-link:focus { top: 12px; text-decoration: none; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 17, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--mono);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  padding: 8px 0;
}
.brand:hover { text-decoration: none; }
.brand-path { color: var(--amber); }
.brand-sep { color: var(--ink-dim); }
.brand-cursor {
  color: var(--amber);
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
}

.site-nav ul {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.site-nav a {
  display: block;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-dim);
  white-space: nowrap;
  border-radius: var(--radius);
}
.site-nav a:hover {
  color: var(--ink);
  text-decoration: none;
  background: var(--bg-raised);
}
.site-nav a[aria-current="true"] {
  color: var(--amber);
}
.site-nav a[aria-current="true"]::before { content: "["; color: var(--ink-faint); }
.site-nav a[aria-current="true"]::after  { content: "]"; color: var(--ink-faint); }

/* ---------- Command-line section headers ---------- */
.cmd {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}
.cmd::before { content: ""; }

.section { padding: 88px 0; border-top: 1px solid var(--line-soft); }

.section-head { margin-bottom: 40px; }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.section-subtitle {
  color: var(--ink-dim);
  max-width: 62ch;
  margin-top: 4px;
}

/* ---------- Hero ---------- */
.hero { padding: 96px 0 88px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.3rem);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.hero-subtitle {
  font-family: var(--mono);
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: var(--amber);
  margin-bottom: 20px;
}

.hero-lede {
  color: var(--ink-dim);
  max-width: 58ch;
  margin-bottom: 24px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.badges li {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  background: var(--bg-raised);
  padding: 5px 10px;
  border-radius: 999px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease,
              color 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--amber);
  color: #14110a;
  font-weight: 600;
}
.btn-primary:hover {
  background: #f0bc68;
  box-shadow: 0 0 22px var(--amber-glow);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
}

.btn-sm { padding: 8px 14px; font-size: 0.78rem; }

/* ---------- Hero terminal (signature element) ---------- */
.term {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.2), 0 18px 50px rgba(0,0,0,0.45);
  overflow: hidden;
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-inset);
}
.term-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
  opacity: 0.8;
}
.term-title {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
}

.term-body {
  padding: 20px 18px 22px;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.9;
  min-height: 152px;
}
.term-line { margin: 0; color: var(--ink-dim); white-space: nowrap; }
.term-value { color: var(--amber); transition: opacity 0.3s ease; }
.term-ok { color: var(--ok); }
.term-cursor {
  color: var(--amber);
  margin-left: 4px;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0; }
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.prose p { color: var(--ink-dim); max-width: 62ch; }
.prose p:last-child { margin-bottom: 0; }

.facts {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 8px 0;
}
.fact {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  padding: 12px 18px;
}
.fact + .fact { border-top: 1px solid var(--line-soft); }
.fact dt {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--amber-dim);
  padding-top: 2px;
}
.fact dd { margin: 0; font-size: 0.92rem; color: var(--ink-dim); }

/* ---------- Skill cards ---------- */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.cards-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.15s ease;
}
.card:hover { border-color: #2a3543; }

.card-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--amber-dim);
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.card h3 { font-size: 1.05rem; margin-bottom: 14px; }
.card h3 a { color: var(--ink); }
.card h3 a:hover { color: var(--amber); text-decoration: none; }
.card p { color: var(--ink-dim); font-size: 0.94rem; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.tag-list li {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-dim);
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  padding: 4px 9px;
  border-radius: 3px;
}

/* ---------- Case studies ---------- */
.disclosure-note,
.why-note {
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber-dim);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 18px 22px;
  margin-bottom: 36px;
}
.disclosure-note p:last-child,
.why-note p:last-child { margin-bottom: 0; color: var(--ink-dim); font-size: 0.94rem; }

.disclosure-label {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--amber-dim);
  margin-bottom: 8px;
}

.why-note { margin-top: 36px; margin-bottom: 0; }

.case {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 28px;
  margin-bottom: 24px;
}
.case:last-child { margin-bottom: 0; }

.case-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  margin-bottom: 14px;
}
.case-head h3 { font-size: 1.2rem; margin: 0; }

.status {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  margin: 0;
  white-space: nowrap;
}
.status-disputed { color: var(--amber); border-color: rgba(231, 171, 79, 0.35); }
.status-closed   { color: var(--steel); border-color: rgba(127, 163, 191, 0.35); white-space: normal; }

.case-desc { color: var(--ink-dim); max-width: 72ch; }

.case-meta { margin: 18px 0; }
.meta-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
}
.meta-row:last-child { border-bottom: 1px solid var(--line-soft); }
.meta-row dt {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--amber-dim);
  padding-top: 3px;
}
.meta-row dd { margin: 0; font-size: 0.94rem; color: var(--ink-dim); }

.case-details {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--bg-inset);
  margin-bottom: 18px;
}
.case-details summary {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--amber);
  cursor: pointer;
  padding: 12px 16px;
  user-select: none;
}
.case-details summary::marker { color: var(--ink-faint); }
.case-details summary:hover { color: #f0bc68; }
.case-details[open] summary { border-bottom: 1px solid var(--line-soft); }

.case-details-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  padding: 18px 20px 20px;
}
.detail-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--amber-dim);
  margin-bottom: 10px;
}
.detail-col ul li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--ink-dim);
  margin-bottom: 6px;
}
.detail-col ul li::before {
  content: ">";
  position: absolute;
  left: 0;
  color: var(--amber-dim);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.case-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- Research story ---------- */
.story-prose p { max-width: 68ch; }

.quote {
  margin: 36px 0;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  background: var(--bg-raised);
}
.quote p {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.7;
}

.story-actions { display: flex; gap: 12px; }

/* ---------- AI projects ---------- */
.project p { margin-bottom: 14px; }
.project-wide { grid-column: 1 / -1; }
.project-wide p { max-width: 72ch; }

.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.metrics li {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-dim);
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  padding: 4px 9px;
  border-radius: 3px;
}

/* ---------- Links ---------- */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.link-card {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "name arrow" "url arrow";
  align-items: center;
  gap: 2px 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  color: var(--ink);
  transition: border-color 0.15s ease;
}
.link-card:hover {
  text-decoration: none;
  border-color: var(--amber-dim);
}
.link-card:hover .link-arrow { color: var(--amber); transform: translate(2px, -2px); }

.link-name { grid-area: name; font-weight: 600; font-size: 0.95rem; }
.link-url {
  grid-area: url;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.link-arrow {
  grid-area: arrow;
  font-family: var(--mono);
  color: var(--ink-faint);
  transition: color 0.15s ease, transform 0.15s ease;
}

/* ---------- Contact ---------- */
.contact-cta {
  font-size: 1.15rem;
  color: var(--ink);
  max-width: 50ch;
  margin-bottom: 36px;
}

.contact-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}
.contact-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  padding: 14px 20px;
}
.contact-row + .contact-row { border-top: 1px solid var(--line-soft); }
.contact-row dt {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--amber-dim);
  padding-top: 3px;
}
.contact-row dd {
  margin: 0;
  font-size: 0.94rem;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.copy-btn {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-dim);
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 3px 9px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.copy-btn:hover { color: var(--amber); border-color: var(--amber-dim); }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 48px 0 56px;
}
.footer-ascii {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin: 0 0 16px;
  line-height: 1.8;
}
.footer-text {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-dim);
}

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-term { max-width: 460px; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .cards-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  html { scroll-padding-top: 116px; }
  .section { padding: 64px 0; }
  .hero { padding: 64px 0; }
  .cards-3, .cards-2 { grid-template-columns: 1fr; }
  .case { padding: 20px; }
  .status { white-space: normal; }
  .case-details-body { grid-template-columns: 1fr; }
  .meta-row, .fact, .contact-row { grid-template-columns: 1fr; gap: 4px; }
  .meta-row dt, .fact dt, .contact-row dt { padding-top: 0; }
  .header-inner { padding: 8px 16px 10px; }
  .site-nav { width: 100%; }
  .container { padding: 0 18px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .brand-cursor, .term-cursor { animation: none; opacity: 1; }
}