/* =========================================================
   Abdulaziz Alasaiqah — Portfolio
   Dark, minimal, with a light touch.
   ========================================================= */

:root {
  --bg:        #0c0c0d;
  --bg-alt:    #111113;
  --text:      #f2f2f3;
  --text-dim:  #a6a8ad;
  --text-mute: #6b6e75;
  --border:    #1f2024;
  --border-2:  #2c2e34;
  --accent:    #ffffff;
  --maxw: 860px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Animated background ---------- */
#bg {
  position: fixed; inset: 0; z-index: -2;
  width: 100%; height: 100%; display: block;
}
/* Fade the network out lower down the page so content stays clean & readable */
.bg-fade {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 540px at 75% 8%, rgba(43,214,106,.05), transparent 70%),
    linear-gradient(180deg, rgba(12,12,13,0) 0%, rgba(12,12,13,.55) 42%, rgba(12,12,13,.92) 78%, #0c0c0d 100%);
}
/* Sections sit on the solid base so the network only shows behind the hero */
.section, .footer { position: relative; background-color: var(--bg); }
.section--alt { background-color: var(--bg-alt); }

/* ---------- Header ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12,12,13,.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  max-width: 1080px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.nav__brand { font-weight: 600; font-size: 1rem; letter-spacing: -.2px; }
.nav__links { display: flex; gap: 28px; }
.nav__links a { font-size: .9rem; color: var(--text-mute); transition: color .15s; }
.nav__links a:hover { color: var(--text); }

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__burger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .25s; }

/* ---------- Hero ---------- */
.hero { padding: 104px 0 80px; }
.hero__avail {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .85rem; color: var(--text-dim); margin-bottom: 26px;
}
.hero__avail .dot {
  width: 8px; height: 8px; border-radius: 50%; background: #2bd66a;
  box-shadow: 0 0 0 3px rgba(43,214,106,.16);
}
.hero__name {
  font-size: clamp(2.3rem, 6vw, 3.4rem); font-weight: 700;
  letter-spacing: -1.6px; line-height: 1.08;
}
.hero__role {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem); color: var(--text-dim);
  font-weight: 500; margin-top: 12px;
}
.hero__intro {
  color: var(--text-dim); font-size: 1.05rem; max-width: 56ch; margin-top: 24px;
}
.hero__actions { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .92rem; font-weight: 500; padding: 11px 22px; border-radius: 8px;
  transition: background .18s, border-color .18s, color .18s, transform .12s;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #0c0c0d; }
.btn--primary:hover { background: #d6d6d8; }
.btn--ghost { border: 1px solid var(--border-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--text-mute); }

/* ---------- Sections ---------- */
.section { padding: 76px 0; border-top: 1px solid var(--border); }
.section--alt { background: var(--bg-alt); }
.kicker {
  font-size: .78rem; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase;
  color: var(--text-mute); margin-bottom: 32px;
}

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; }
.about__text p { color: var(--text-dim); margin-bottom: 18px; }
.about__text p:last-child { margin-bottom: 0; }
.about__text strong { color: var(--text); font-weight: 600; }
.about__facts { display: flex; flex-direction: column; gap: 18px; }
.about__facts dt {
  font-size: .76rem; text-transform: uppercase; letter-spacing: .8px;
  color: var(--text-mute); margin-bottom: 2px;
}
.about__facts dd { font-size: .95rem; color: var(--text); }

/* ---------- Research list ---------- */
.list { list-style: none; }
.item {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  padding: 22px 0; border-bottom: 1px solid var(--border);
}
.item:last-child { border-bottom: 0; }
.item__title { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.item__desc { color: var(--text-dim); font-size: .94rem; }
.item__tag {
  flex-shrink: 0; font-size: .76rem; font-weight: 500; color: var(--text-dim);
  border: 1px solid var(--border-2); padding: 3px 11px; border-radius: 100px;
  white-space: nowrap; margin-top: 2px;
}

/* ---------- Certifications ---------- */
.certs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cert {
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 26px;
}
.cert h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.cert p { color: var(--text-dim); font-size: .94rem; }

/* ---------- Skills ---------- */
.skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.skillset {
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 24px;
}
.skillset h3 { font-size: 1rem; font-weight: 600; margin-bottom: 12px; }
.skillset p { color: var(--text-dim); font-size: .92rem; }

/* ---------- Projects ---------- */
.repos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.repo {
  display: block; border: 1px solid var(--border); border-radius: 12px; padding: 22px;
  transition: border-color .18s, transform .15s; background: var(--bg);
}
.repo:hover { border-color: var(--border-2); transform: translateY(-2px); }
.repo h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.repo p { color: var(--text-dim); font-size: .9rem; }
.repo__lang { display: inline-block; margin-top: 14px; font-size: .8rem; color: var(--text-mute); }
.repos__all { display: inline-block; margin-top: 28px; font-size: .92rem; color: var(--text); font-weight: 500; border-bottom: 1px solid var(--border-2); padding-bottom: 2px; }
.repos__all:hover { border-color: var(--text); }

/* ---------- Contact ---------- */
.contact__title { font-size: 1.6rem; font-weight: 700; letter-spacing: -.5px; }
.contact__lead { color: var(--text-dim); margin-top: 10px; }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 32px; }
.contact__item {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 20px 22px;
  transition: border-color .18s, transform .15s; word-break: break-word;
}
.contact__item:hover { border-color: var(--border-2); transform: translateY(-2px); }
.contact__item span { font-size: .76rem; text-transform: uppercase; letter-spacing: .8px; color: var(--text-mute); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--text-mute); font-size: .88rem; }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .about { grid-template-columns: 1fr; gap: 36px; }
  .certs, .repos, .contact { grid-template-columns: 1fr; }
  .skills { grid-template-columns: 1fr; }
  .nav__burger { display: flex; }
  .nav__links {
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--bg);
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%); transition: transform .3s; pointer-events: none;
  }
  .nav__links.open { transform: translateY(0); pointer-events: auto; }
  .nav__links a { padding: 15px 24px; border-top: 1px solid var(--border); }
}

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