/* ============================================================
   Adelaide Baron — Portfolio
   Design system: "Signal" — sonar/radar motif for a backend &
   automation engineer whose day job is literally pulling signal
   out of noise (hydrophone data, flaky tests, manual toil).
   ============================================================ */

:root {
  /* Color tokens */
  --ink:        #0E1420;   /* base background, sonar-depth navy */
  --ink-2:      #141C2E;   /* panel background */
  --ink-3:      #1B2438;   /* raised panel / hover */
  --line:       #2A3450;   /* hairline borders on dark */
  --paper:      #F4F1E8;   /* primary text on dark */
  --muted:      #8C97B3;   /* secondary text on dark */
  --signal:     #3FE8B0;   /* sonar ping green — primary accent */
  --signal-dim: #1F6F55;   /* deep green for subtle fills */
  --coral:      #FF7A66;   /* warm accent — volunteering / energy */
  --amber:      #FFC857;   /* secondary accent — education */
  --violet:     #9C8CFF;   /* tertiary accent — used sparingly */

  /* Type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 14px;
  --radius-sm: 8px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
}

/* ---------- Eyebrow / kicker labels (mono, ping-prefixed) ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(63, 232, 176, 0.18);
  flex-shrink: 0;
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14, 20, 32, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: 1120px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .nav-inner { padding: 16px 20px; }
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--paper);
}

.nav-brand .blip {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(63, 232, 176, 0.15);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(63, 232, 176, 0.15); }
  50% { box-shadow: 0 0 0 8px rgba(63, 232, 176, 0.05); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 13.5px;
}

.nav-links a.page-link {
  color: var(--muted);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-links a.page-link:hover,
.nav-links a.page-link[aria-current="page"] {
  color: var(--paper);
  border-color: var(--signal);
}

.nav-icons {
  display: flex;
  align-items: center;
  gap: 14px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--muted);
  transition: color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.icon-btn:hover {
  color: var(--signal);
  border-color: var(--signal);
  transform: translateY(-2px);
}

.btn-cv {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 9px 16px;
  border-radius: 999px;
  transition: transform 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn-cv:hover {
  background: #56f0c0;
  transform: translateY(-2px);
}

.nav-mobile-hide { display: flex; }

@media (max-width: 780px) {
  .nav-links .page-link-label { display: none; }
}

@media (max-width: 560px) {
  .nav-mobile-hide { display: none; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
}

.hero-eyebrow { margin-bottom: 22px; }

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  color: var(--paper);
}

.hero h1 .hi { color: var(--signal); }

.hero-role {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--muted);
}

.hero-lede {
  margin-top: 22px;
  max-width: 46ch;
  font-size: 17px;
  color: #C7CEE0;
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid var(--line);
  color: var(--paper);
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  border-color: var(--signal);
  transform: translateY(-2px);
}

.btn.primary {
  background: var(--signal);
  color: var(--ink);
  border-color: var(--signal);
  font-weight: 600;
}

.btn.primary:hover { background: #56f0c0; }

/* ---------- Radar / sonar sweep (signature element) ---------- */

.radar {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(63,232,176,0.05) 0%, rgba(63,232,176,0) 70%),
    var(--ink-2);
  border: 1px solid var(--line);
}

.radar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--line);
}
.radar-ring.r2 { inset: 15%; }
.radar-ring.r3 { inset: 30%; }
.radar-ring.r4 { inset: 45%; }

.radar-cross {
  position: absolute;
  inset: 0;
}
.radar-cross::before, .radar-cross::after {
  content: "";
  position: absolute;
  background: var(--line);
}
.radar-cross::before { top: 0; bottom: 0; left: 50%; width: 1px; }
.radar-cross::after { left: 0; right: 0; top: 50%; height: 1px; }

.radar-sweep {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(63,232,176,0.35) 0deg, rgba(63,232,176,0) 55deg, rgba(63,232,176,0) 360deg);
  animation: sweep 4.5s linear infinite;
}

@keyframes sweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-blip {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 8px 1px rgba(63, 232, 176, 0.7);
  animation: blip 4.5s ease-in-out infinite;
}

@keyframes blip {
  0%, 20% { opacity: 0; }
  24%, 40% { opacity: 1; }
  55%, 100% { opacity: 0; }
}

.radar-label {
  position: absolute;
  bottom: -34px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .radar-sweep { animation: none; background: conic-gradient(rgba(63,232,176,0.12), rgba(63,232,176,0)); }
  .radar-blip { animation: none; opacity: 0.9; }
}

/* ---------- Section scaffolding ---------- */

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

.section:last-of-type { border-bottom: none; }

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin-top: 14px;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  color: var(--paper);
}

.section-head p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15.5px;
}

/* ---------- Stat strip ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 8px;
}

@media (max-width: 780px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}

.stat {
  background: var(--ink-2);
  padding: 26px 22px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--signal);
}

.stat-label {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
}

/* ---------- Tech chip cloud ---------- */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.chip {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper);
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: 7px 14px;
  border-radius: 999px;
}

/* ---------- Project / work panels ---------- */

.panels {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (max-width: 780px) {
  .panels { grid-template-columns: 1fr; }
}

.panel {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.panel:hover {
  border-color: var(--signal);
  transform: translateY(-3px);
}

.panel-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.panel-org {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.panel-period {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
}

.panel h3 {
  margin-top: 10px;
  font-size: 1.15rem;
  color: var(--paper);
}

.panel ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: #C7CEE0;
  font-size: 14.5px;
}

.panel ul li { margin-bottom: 7px; }
.panel ul li:last-child { margin-bottom: 0; }

.panel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.panel-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

@media (max-width: 780px) {
  .panel-featured { grid-template-columns: 1fr; }
}

.panel-featured .stat-mini {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal);
  margin-top: 6px;
}

/* ---------- Education / courses cards ---------- */

.edu-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.edu-item {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 640px) {
  .edu-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal);
}

.edu-name {
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--paper);
}

.edu-detail {
  margin-top: 4px;
  font-size: 14px;
  color: var(--muted);
}

.edu-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
  border: 1px solid rgba(255, 200, 87, 0.35);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
  height: fit-content;
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 640px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.contact-card:hover {
  border-color: var(--signal);
  transform: translateY(-2px);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(63, 232, 176, 0.08);
  color: var(--signal);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-value {
  margin-top: 3px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--paper);
}

/* ---------- Footer ---------- */

.footer {
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
}

/* ---------- Brag doc page specifics ---------- */

.intro-card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  font-size: 15px;
  color: #C7CEE0;
}

.intro-card h3 {
  color: var(--paper);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.intro-card + .intro-card { margin-top: 16px; }

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

@media (max-width: 700px) {
  .intro-grid { grid-template-columns: 1fr; }
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 44px 0 28px;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover { color: var(--paper); border-color: var(--muted); }

.filter-btn.active {
  color: var(--ink);
  background: var(--signal);
  border-color: var(--signal);
  font-weight: 600;
}

.entries {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.entry {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
}

@media (max-width: 700px) {
  .entry { grid-template-columns: 1fr; gap: 10px; }
}

.entry-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.entry-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.entry-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  width: fit-content;
}

.entry-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.entry-tag.work {
  color: var(--signal);
  background: rgba(63, 232, 176, 0.1);
}
.entry-tag.work::before { background: var(--signal); }

.entry-tag.volunteering {
  color: var(--coral);
  background: rgba(255, 122, 102, 0.1);
}
.entry-tag.volunteering::before { background: var(--coral); }

.entry-tag.education {
  color: var(--amber);
  background: rgba(255, 200, 87, 0.1);
}
.entry-tag.education::before { background: var(--amber); }

.entry h4 {
  font-size: 1.05rem;
  color: var(--paper);
}

.entry p {
  margin-top: 8px;
  font-size: 14.5px;
  color: #C7CEE0;
}

.entry.is-hidden { display: none; }

.entry-empty {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  padding: 40px 0;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}