/* ---------------------------------------------
   Yasin Jones: Portfolio
   Palette: deep slate + cold cyan accent
   (tech / terminal feel, deliberately not green-on-black)
--------------------------------------------- */

:root {
  --bg: #000000;
  --bg-elevated: #0a0a0a;
  --text: #c6ff00;
  --text-dim: #9a9a8a;
  --accent: #39ff14;
  --accent-dim: #1f6b0f;
  --border: #1a1a1a;
  --mono: 'Jersey 10', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  --sans: 'Jersey 10', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  --max-width: 980px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 19px;
  line-height: 1.6;
}

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

/* ---------- Side nav ---------- */

.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 220px;
  padding: 48px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--border);
  background: var(--bg-elevated);
}

.sidenav .brand {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
}

.sidenav ul {
  list-style: none;
  margin-top: 48px;
}
.sidenav li { margin-bottom: 18px; }
.sidenav a {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.sidenav a:hover { color: var(--accent); text-decoration: none; }

.social {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.8rem;
}
.social a { color: var(--text-dim); }
.social a:hover { color: var(--accent); }

/* ---------- Main layout ---------- */

main {
  margin-left: 220px;
  padding: 0 64px;
  max-width: calc(var(--max-width) + 64px);
}

section {
  padding: 120px 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }

h3 {
  font-family: var(--mono);
  color: var(--text);
  font-size: 1.1rem;
  letter-spacing: 1px;
  margin-bottom: 40px;
}
.tag { color: var(--accent); margin-right: 8px; }

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

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  padding-top: 0;
}

.eyebrow {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  color: var(--text);
  font-weight: 700;
  line-height: 1.05;
}

.typed-line {
  font-family: var(--mono);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--text-dim);
  margin-top: 16px;
  min-height: 2.4em;
}

.cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-sub {
  max-width: 540px;
  margin-top: 28px;
  color: var(--text-dim);
  font-size: 1.05rem;
}

.cta {
  display: inline-block;
  margin-top: 40px;
  padding: 14px 28px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  width: fit-content;
}
.cta:hover {
  background: var(--accent-dim);
  text-decoration: none;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
}

.about-text p { margin-bottom: 18px; color: var(--text); }

.about-facts ul { list-style: none; }
.about-facts li {
  border-left: 2px solid var(--accent-dim);
  padding-left: 16px;
  margin-bottom: 20px;
  font-size: 0.95rem;
}
.about-facts span {
  display: block;
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

/* ---------- Timeline ---------- */

.timeline { list-style: none; }
.timeline li {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}
.timeline li:first-child { border-top: none; }

.timeline-date {
  font-family: var(--mono);
  color: var(--text-dim);
  font-size: 0.85rem;
}

.timeline-body h4 { color: var(--text); margin-bottom: 6px; font-size: 1.05rem; }
.timeline-body p { color: var(--text-dim); font-size: 0.95rem; }

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

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dim);
}

.project-card h4 { color: var(--text); margin-bottom: 10px; }
.project-card p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 16px; }

.project-links { display: flex; gap: 16px; font-family: var(--mono); font-size: 0.85rem; }

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

.contact p { color: var(--text-dim); max-width: 480px; margin-bottom: 32px; }

.contact-form {
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-form label {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 14px;
}
.contact-form label:first-child { margin-top: 0; }

.contact-form input,
.contact-form textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.95rem;
  padding: 10px 12px;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact-form button {
  margin-top: 20px;
  cursor: pointer;
  background: none;
  font-family: var(--mono);
}

.contact-alt {
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

footer {
  margin-left: 220px;
  padding: 32px 64px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.8rem;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .sidenav {
    position: relative;
    height: auto;
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
  }
  .sidenav ul { display: flex; gap: 16px; margin-top: 0; }
  .sidenav li { margin-bottom: 0; }
  .social { display: none; }

  main, footer { margin-left: 0; padding: 0 24px; }
  .about-grid { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 1fr; gap: 8px; }
}