/* =========================================================
   Mubin Al-Manaf — portfolio
   Direction: career as an institutional cost report
   Ink ground · champagne accent · Fraunces / Inter / Plex Mono
   ========================================================= */

:root {
  /* palette */
  --bg:        #0C0F14;
  --bg-elev:   #12161D;
  --bg-elev-2: #171C24;
  --line:      rgba(236, 234, 228, 0.10);
  --line-soft: rgba(236, 234, 228, 0.06);
  --text:      #ECEAE4;
  --text-dim:  #9AA0A8;
  --text-faint:#5E646D;
  --accent:    #6CA9C9;       /* soft teal accent */
  --accent-2:  #B6D1E5;
  --accent-soft: rgba(108, 169, 201, 0.12);
  --data:      #7FA8C4;       /* cool secondary, used sparingly */

  /* type */
  --display: "Roboto", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* scale */
  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --section-y: clamp(72px, 11vw, 150px);

  --r: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: clamp(16px, 1.05vw, 17px);
  line-height: 1.65;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* subtle grain/vignette so the ink doesn't read flat */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(1100px 600px at 78% -8%, rgba(201,169,106,0.07), transparent 60%),
    radial-gradient(900px 700px at -5% 110%, rgba(127,168,196,0.05), transparent 60%);
  pointer-events: none; z-index: 0;
}
main, .nav, .footer { position: relative; z-index: 1; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol, dl { margin: 0; padding: 0; list-style: none; }
h1, h2, h3 { margin: 0; font-weight: 500; }

::selection { background: var(--accent); color: #11141A; }

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

.skip-link {
  position: absolute; left: -999px; top: 8px; z-index: 100;
  background: var(--accent); color: #11141A;
  padding: 10px 16px; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { left: 12px; }

/* ---------- layout primitives ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }

.section { padding-block: var(--section-y); border-top: 1px solid var(--line-soft); }
.section--alt { background: var(--bg-elev); }

.eyebrow {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex; align-items: center; gap: 12px;
}
.eyebrow .idx { color: var(--accent); }

.section__head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 60px); }
.section__title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.6rem, 3.8vw, 2.4rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
}
#projects .section__sub {
  font-size: clamp(0.95rem, 1.2vw, 1rem);
  max-width: 100%;
}
.section__sub { margin: 18px 0 0; color: var(--text-dim); max-width: 56ch; }

.lead { font-size: clamp(1.15rem, 1.7vw, 1.4rem); line-height: 1.5; color: var(--text); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 24px;
  border-radius: 100px;
  font-size: 0.92rem; font-weight: 500;
  border: 1px solid transparent;
  transition: transform .35s var(--ease), background .25s, color .25s, border-color .25s;
}
.btn--primary { background: var(--accent); color: #11141A; }
.btn--primary:hover { background: var(--accent-2); transform: translateY(-2px); }
.btn--secondary { background: var(--accent-2); color: #11141A; }
.btn--secondary:hover { background: var(--accent); transform: translateY(-2px); }
.btn--ghost { border-color: var(--line); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(12, 15, 20, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav__mark { display: flex; align-items: center; gap: 12px; }
.nav__mono {
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.1em;
  color: #11141A; background: var(--accent);
  width: 30px; height: 30px; border-radius: 7px;
  display: grid; place-items: center; font-weight: 500;
}
.nav__name { font-family: var(--display); font-size: 1.02rem; letter-spacing: -0.01em; }
.nav__photo {
  width: 40px;
  height: 40px;
  object-fit: cover;
  object-position: center 12%;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.06);
  box-shadow: 0 8px 20px rgba(0,0,0,0.55);
  flex: none;
}
.nav__links { display: flex; align-items: center; gap: 30px; }
.nav__links a { font-size: 0.9rem; color: var(--text-dim); transition: color .2s; position: relative; }
.nav__links a:hover, .nav__links a.is-active { color: var(--text); }
.nav__links a:not(.nav__cta).is-active::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 100%; height: 1px; background: var(--accent);
}
.nav__cta {
  border: 1px solid var(--line); padding: 8px 18px; border-radius: 100px;
  color: var(--text) !important; transition: border-color .2s, color .2s;
}
.nav__cta:hover { border-color: var(--accent); color: var(--accent) !important; }

.nav__toggle { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; position: relative; }
.nav__toggle span {
  position: absolute; left: 9px; width: 22px; height: 1.5px; background: var(--text);
  transition: transform .3s var(--ease), opacity .2s;
}
.nav__toggle span:nth-child(1) { top: 16px; }
.nav__toggle span:nth-child(2) { top: 23px; }
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

.nav__mobile {
  display: none; flex-direction: column;
  background: rgba(12,15,20,0.97); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
  padding: 8px var(--gutter) 24px;
}
.nav__mobile a { padding: 14px 0; border-bottom: 1px solid var(--line-soft); font-size: 1.05rem; color: var(--text-dim); }
.nav__mobile a:last-child { border-bottom: 0; }
.nav.is-open .nav__mobile { display: flex; }

/* =========================================================
   HERO
   ========================================================= */
.hero { padding-top: clamp(118px, 16vh, 180px); padding-bottom: clamp(56px, 9vw, 110px); }
.hero__grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 38px; }
.hero__meta { display: flex; flex-wrap: wrap; gap: 12px; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--text-faint); margin-top: 12px; }

.ledger {
  background: linear-gradient(180deg, var(--bg-elev-2), var(--bg-elev));
  border: 1px solid rgba(236,234,228,0.14);
  border-radius: var(--r);
  padding: clamp(24px, 3vw, 34px);
  box-shadow: 0 36px 90px -36px rgba(0,0,0,0.72);
  margin-top: clamp(28px, 3.2vw, 38px);
}
.ledger__head {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.18em;
  color: var(--text-dim); padding-bottom: 16px; margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}
.ledger__ref {
  font-size: 0.85rem;
}
.ledger__ref--dim { color: var(--text-faint); }
.ledger__row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding: 18px 0; border-bottom: 1px solid var(--line-soft);
}
.ledger__row dt { color: var(--text-dim); font-size: 0.92rem; }
.ledger__row dd { margin: 0; display: flex; align-items: baseline; gap: 2px; }
.ledger__row .num {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(1.5rem, 3.2vw, 2.05rem); color: var(--text);
  font-variant-numeric: tabular-nums;
}
.ledger__row .unit { font-family: var(--mono); color: var(--accent); font-size: 1.05rem; }
.ledger__foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 14px; padding-top: 16px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--text-dim);
}
.ledger__foot-val { color: var(--accent); }

.hero__scroll {
  display: flex; align-items: center; gap: 12px; margin-top: clamp(40px, 6vw, 72px);
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint);
}

/* Hero typography tweaks */
.hero__title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.4rem, 6.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 6px 0 18px;
}
.hero__lead {
  font-size: clamp(1.02rem, 1.6vw, 1.35rem);
  line-height: 1.45;
  max-width: 34ch;
  color: var(--text);
  margin: 0 0 16px;
}

/* (duplicate hero portrait rules removed; single definition above is used) */
.hero__scroll-line { width: 60px; height: 1px; background: var(--line); position: relative; overflow: hidden; }
.hero__scroll-line::after {
  content: ""; position: absolute; inset: 0; width: 24px; background: var(--accent);
  animation: slide 2.4s var(--ease) infinite;
}
@keyframes slide { 0% { transform: translateX(-26px); } 60%,100% { transform: translateX(62px); } }

/* =========================================================
   ABOUT
   ========================================================= */
.section__grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(36px, 5vw, 72px); align-items: start; }
.about__body { margin-top: 32px; }
.about__body > p { margin: 0 0 18px; color: var(--text-dim); }
.about__body > p.lead { color: var(--text); margin-bottom: 26px; }
.about__pillars { display: grid; gap: 4px; margin-top: 36px; border-top: 1px solid var(--line); }
.about__pillars li { display: flex; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line-soft); }
.pillar__mark {
  flex: none; width: 42px; height: 42px; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-family: var(--display); font-size: 1.2rem;
}
.about__pillars h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.about__pillars p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

/* =========================================================
   HIGHLIGHTS
   ========================================================= */
.highlights__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r); overflow: hidden;
}
.stat { background: var(--bg-elev); padding: clamp(26px, 3vw, 40px) clamp(22px, 2.5vw, 32px); }
.stat__num {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(2.4rem, 5vw, 3.4rem); line-height: 1; letter-spacing: -0.02em; margin: 0 0 16px;
}
.stat__num span { font-family: var(--mono); font-size: 0.4em; color: var(--accent); margin-left: 4px; vertical-align: baseline; }
.stat__label { margin: 0; color: var(--text-dim); font-size: 0.9rem; line-height: 1.5; }

/* =========================================================
   TIMELINE
   ========================================================= */
.timeline { border-top: 1px solid var(--line); }
.tl {
  display: grid; grid-template-columns: 200px 1fr; gap: clamp(20px, 4vw, 56px);
  padding: clamp(28px, 3.5vw, 44px) 0; border-bottom: 1px solid var(--line-soft);
}
.tl__date time {
  font-family: var(--mono); font-size: 0.82rem; letter-spacing: 0.04em; color: var(--accent);
  display: inline-block; padding-top: 4px;
}
.tl__role { font-family: var(--display); font-size: clamp(1.25rem, 2.4vw, 1.6rem); font-weight: 400; }
.tl__org { font-family: var(--mono); font-size: 0.82rem; color: var(--text-dim); margin: 6px 0 16px; letter-spacing: 0.03em; }
.tl__points { display: grid; gap: 10px; }
.tl__points li { position: relative; padding-left: 22px; color: var(--text-dim); font-size: 0.97rem; }
.tl__points li::before {
  content: ""; position: absolute; left: 0; top: 11px; width: 7px; height: 1px; background: var(--accent);
}
.timeline__note { margin-top: 28px; color: var(--text-faint); font-size: 0.92rem; font-style: italic; }

/* =========================================================
   PROJECTS
   ========================================================= */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(16px, 2vw, 24px); }
.project {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--r); padding: clamp(26px, 3vw, 38px);
  display: flex; flex-direction: column;
  transition: transform .4s var(--ease), border-color .3s, background .3s;
}
.section--alt .project { background: var(--bg); }
.project:hover { transform: translateY(-5px); border-color: rgba(201,169,106,0.4); }
.project__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.project__no { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; color: var(--accent); }
.project__field {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-faint); border: 1px solid var(--line); border-radius: 100px; padding: 4px 12px;
}
.project__title {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(1.3rem, 2.3vw, 1.7rem); line-height: 1.15; margin-bottom: 16px; letter-spacing: -0.01em;
}
.project__desc { color: var(--text-dim); font-size: 0.96rem; margin: 0 0 24px; flex-grow: 1; }
.project__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project__tags li {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.02em;
  color: var(--text-dim); background: var(--bg-elev-2); border: 1px solid var(--line-soft);
  border-radius: 6px; padding: 5px 10px;
}

/* =========================================================
   SKILLS
   ========================================================= */
.skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 48px); }
.skillset { border-top: 1px solid var(--accent); padding-top: 24px; }
.skillset__title { font-family: var(--display); font-size: 1.2rem; font-weight: 400; margin-bottom: 22px; }
.skillset__tags { display: flex; flex-wrap: wrap; gap: 9px; }
.skillset__tags li {
  font-size: 0.85rem; color: var(--text); background: var(--bg-elev-2);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 13px;
  transition: border-color .2s, color .2s;
}
.skillset__tags li:hover { border-color: var(--accent); color: var(--accent); }

/* =========================================================
   EDUCATION + CERTS
   ========================================================= */
.section__split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.split__col .section__head { margin-bottom: 28px; }
.cards { display: grid; gap: 14px; }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; }
.card__meta {
  display: flex; justify-content: space-between; gap: 12px;
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--text-dim); margin-bottom: 12px;
}
.card__title { font-size: 1.05rem; font-weight: 600; line-height: 1.3; margin-bottom: 8px; }
.card__detail { margin: 0; color: var(--text-dim); font-size: 0.92rem; }

.certs { display: grid; gap: 2px; }
.certs li { display: flex; align-items: flex-start; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line-soft); }
.certs__mark { flex: none; width: 8px; height: 8px; margin-top: 7px; border-radius: 50%; border: 1px solid var(--accent); }
.certs strong { display: block; font-weight: 600; font-size: 0.98rem; }
.certs span { color: var(--text-faint); font-size: 0.85rem; font-family: var(--mono); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 80px); align-items: center; }
.contact__title {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(2rem, 4.6vw, 3.2rem); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 18px;
}
.contact__sub { color: var(--text-dim); max-width: 46ch; }
.contact__links { display: grid; gap: 2px; }
.contact__links li {
  display: grid; grid-template-columns: 110px 1fr; gap: 16px; align-items: baseline;
  padding: 20px 0; border-bottom: 1px solid var(--line); 
}
.contact__links li:first-child { border-top: 1px solid var(--line); }
.contact__k { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-faint); }
.contact__links a { font-size: 1.05rem; transition: color .2s; word-break: break-word; }
.contact__links a:hover { color: var(--accent); }
.contact__static { color: var(--text-dim); }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { border-top: 1px solid var(--line-soft); padding-block: 30px; }
.footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer__mono { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--text-dim); }
.footer__dim { color: var(--text-faint); }

/* =========================================================
   REVEAL ANIMATION
   ========================================================= */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js [data-line] { opacity: 0; transform: translateY(10px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js [data-line].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal, [data-line] { opacity: 1 !important; transform: none !important; transition: none !important; }
  .hero__scroll-line::after { animation: none; }
  .btn, .project, .skillset__tags li { transition: none; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; justify-items: start; }
  .ledger { max-width: 460px; }
  .ledger { margin-left: 0; margin-right: 0; }
  .section__grid { grid-template-columns: 1fr; }
  .highlights__grid { grid-template-columns: repeat(2, 1fr); }
  .skills { grid-template-columns: 1fr; gap: 36px; }
  .section__split { grid-template-columns: 1fr; gap: 56px; }
  .contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__toggle { display: block; }
  .projects { grid-template-columns: 1fr; }
  .tl { grid-template-columns: 1fr; gap: 8px; }
  .tl__date time { padding-top: 0; }
  .nav__photo { width: 36px; height: 36px; }
}

@media (max-width: 480px) {
  .highlights__grid { grid-template-columns: 1fr; }
  .hero__meta { font-size: 0.72rem; }
  .contact__links li { grid-template-columns: 1fr; gap: 4px; }
  .nav__photo { width: 30px; height: 30px; object-position: center 12%; }
}