/* ============================================================
   Zakriya Paracha — Portfolio
   Dark minimalist theme with a subtle embedded/circuit accent
   ============================================================ */

:root {
  --bg: #0d1117;
  --bg-raised: #11161d;
  --bg-raised-2: #151b23;
  --border: #212830;
  --border-soft: #1a2029;
  --text: #e6e6e6;
  --text-dim: #9aa4af;
  --text-dimmer: #6b7580;
  --accent: #3ddc84;
  --accent-dim: rgba(61, 220, 132, 0.12);
  --accent-border: rgba(61, 220, 132, 0.35);
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, "SF Mono", Consolas, monospace;
  --maxw: 1100px;
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-mono);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; color: var(--text); }

.text-dim { color: var(--text-dim); }

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

.accent { color: var(--accent); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  background: var(--accent);
  color: #05130a;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  z-index: 200;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  background: var(--bg-raised);
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
  text-decoration: none;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--accent-border);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent-dim);
  border-color: var(--accent-border);
  color: var(--accent);
}

.btn-primary:hover {
  background: rgba(61, 220, 132, 0.2);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

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

.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

.logo .bracket {
  color: var(--accent);
}

.logo:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--text-dim);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  text-decoration: none;
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
  font-family: var(--font-mono);
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-raised);
    border-bottom: 1px solid var(--border-soft);
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-soft);
    border-left: 2px solid transparent;
  }

  .nav-links a[aria-current="page"] {
    border-bottom: 1px solid var(--border-soft);
    border-left-color: var(--accent);
  }
}

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

.hero {
  position: relative;
  padding: 120px 24px 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-soft);
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.07;
  pointer-events: none;
  background-repeat: repeat;
  background-size: 340px;
}

.hero-inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
}

.hero-kicker {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.hero h1 {
  margin-bottom: 10px;
}

.hero .cursor {
  display: inline-block;
  width: 0.5em;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-title {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  margin-bottom: 20px;
}

.hero-pitch {
  max-width: 640px;
  font-size: 1.05rem;
  color: var(--text-dim);
}

.social-row {
  display: flex;
  gap: 20px;
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.social-row a {
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
}

.social-row a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* ---------- Scroll reveal ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Sections ---------- */

.section {
  padding: 80px 24px;
}

.section-alt {
  background: var(--bg-raised);
}

.section-head {
  margin-bottom: 44px;
}

.section-label {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.circuit-divider {
  border: none;
  height: 12px;
  margin: 0;
  background-image:
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 24px 100%;
  position: relative;
}

.circuit-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--border) 0 10px, transparent 10px 18px);
}

/* ---------- About / bio ---------- */

.bio p {
  max-width: 760px;
  color: var(--text-dim);
  font-size: 1.02rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.stat-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--bg-raised-2);
}

.stat-card .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.6rem;
  display: block;
}

.stat-card .label {
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-top: 4px;
}

/* ---------- Timeline (experience) ---------- */

.timeline {
  position: relative;
  border-left: 1px dashed var(--border);
  padding-left: 30px;
  margin-left: 6px;
}

.timeline-item {
  position: relative;
  padding-bottom: 44px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}

.timeline-role {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--text);
}

.timeline-role .company {
  color: var(--accent);
}

.timeline-date {
  font-family: var(--font-mono);
  color: var(--text-dimmer);
  font-size: 0.85rem;
  white-space: nowrap;
}

.timeline-stack {
  font-family: var(--font-mono);
  color: var(--text-dimmer);
  font-size: 0.82rem;
  margin-bottom: 10px;
}

.timeline-item ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-dim);
}

.timeline-item li {
  margin-bottom: 6px;
}

/* ---------- Education ---------- */

.edu-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--bg-raised-2);
}

.edu-card h3 {
  margin-bottom: 4px;
}

.edu-meta {
  font-family: var(--font-mono);
  color: var(--text-dimmer);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

/* ---------- Skills ---------- */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.skill-group h4 {
  color: var(--accent);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 9px;
  background: var(--bg-raised);
}

/* ---------- Projects ---------- */

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  color: var(--text);
  border-color: var(--accent-border);
}

.filter-btn.active {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-dim);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}

.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--bg-raised-2);
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.project-card .cat {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.project-card h3 {
  margin-bottom: 8px;
}

.project-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
  flex-grow: 1;
}

.project-links {
  display: flex;
  gap: 16px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

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

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 56px 24px 32px;
  background: var(--bg-raised);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-dim);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: var(--maxw);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-dimmer);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Resume page ---------- */

.resume-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}

.resume-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
  margin-bottom: 40px;
}

.resume-header h1 {
  margin-bottom: 6px;
}

.resume-contact {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: right;
}

.resume-section {
  margin-bottom: 40px;
}

.resume-section h2 {
  font-size: 1.1rem;
  color: var(--accent);
  border-bottom: 1px dashed var(--border);
  padding-bottom: 10px;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.resume-entry {
  margin-bottom: 22px;
}

.resume-entry:last-child {
  margin-bottom: 0;
}

.resume-entry-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.resume-entry-title {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text);
}

.resume-entry-title .company {
  color: var(--accent);
}

.resume-entry-date {
  font-family: var(--font-mono);
  color: var(--text-dimmer);
  font-size: 0.82rem;
  white-space: nowrap;
}

.resume-entry-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dimmer);
  margin: 3px 0 8px;
}

.resume-entry ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.resume-entry li {
  margin-bottom: 4px;
}

#resume-download-bar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 20px;
}

@media print {
  :root {
    --bg: #ffffff;
    --bg-raised: #ffffff;
    --bg-raised-2: #ffffff;
    --text: #111318;
    --text-dim: #454b54;
    --text-dimmer: #6b7580;
    --border: #cfd4da;
    --accent: #1a7a45;
  }

  .site-nav, .site-footer, #resume-download-bar, .skip-link {
    display: none !important;
  }

  body {
    background: #fff;
    color: var(--text);
  }

  .resume-wrap {
    max-width: 100%;
    padding: 0;
  }

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

@media (max-width: 640px) {
  .resume-header {
    flex-direction: column;
  }

  .resume-contact {
    text-align: left;
  }

  .timeline-head, .resume-entry-head {
    flex-direction: column;
  }
}