/* ============================================================
   Niazur Rahman, portfolio
   Palette derived from personal brand (green + deep ink)
   ============================================================ */
:root{
  --bg:        #FAFAF7;
  --surface:   #F1F2EB;
  --ink:       #16180F;
  --muted:     #5C6153;
  --green:     #3E8934;
  --green-ink: #2C6425;
  --green-soft:#E9F2E4;
  --line:      #E1E3D8;
  --max: 1140px;
  --pad: clamp(20px, 5vw, 56px);
  --header-h: 70px;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ animation-duration:.01ms !important; transition-duration:.01ms !important; }
}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:"Manrope", system-ui, sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--green); color:#fff; }
img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; }
:focus-visible{ outline:2px solid var(--green); outline-offset:2px; border-radius:2px; }

h1,h2,h3{
  font-family:"Syne", system-ui, sans-serif;
  font-weight:700;
  line-height:1.06;
  letter-spacing:-0.015em;
  text-wrap:balance;
}

/* Anchor targets clear the sticky header */
[id]{ scroll-margin-top:calc(var(--header-h) + 18px); }

.wrap{ max-width:var(--max); margin:0 auto; padding-left:var(--pad); padding-right:var(--pad); }

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:100;
  background:var(--ink); color:var(--bg); font-weight:700; font-size:14px;
  padding:12px 20px; border-radius:0 0 8px 0; text-decoration:none;
}
.skip-link:focus{ left:0; }

.label{
  font-family:"Space Mono", monospace;
  font-size:12px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--green-ink);
  display:flex; align-items:center; gap:12px;
}
.label::before{ content:""; width:10px; height:10px; background:var(--green); border-radius:2px; flex:none; }

/* ---------- Header ---------- */
header{
  position:sticky; top:0; z-index:50;
  background:rgba(250,250,247,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{ display:flex; align-items:center; justify-content:space-between; height:var(--header-h); gap:20px; }
.logo{
  font-family:"Syne", sans-serif; font-weight:700; font-size:19px;
  text-decoration:none; letter-spacing:-0.01em;
}
.logo span{ color:var(--green); }
.nav-links{ display:flex; gap:34px; list-style:none; align-items:center; }
.nav-links a{
  text-decoration:none; font-size:14.5px; font-weight:600; color:var(--muted);
  transition:color .2s;
}
.nav-links a:hover, .nav-links a:focus-visible, .nav-links a[aria-current="page"]{ color:var(--ink); }
.nav-cta{
  font-size:14px; font-weight:700; text-decoration:none;
  background:var(--ink); color:var(--bg);
  padding:10px 22px; border-radius:8px;
  transition:background .2s;
}
.nav-cta:hover, .nav-cta:focus-visible{ background:var(--green-ink); }
.menu-btn{
  display:none; background:none; border:1.5px solid var(--ink); border-radius:8px;
  padding:8px 16px; font-family:"Space Mono", monospace; font-size:12px;
  letter-spacing:.1em; text-transform:uppercase; cursor:pointer; color:var(--ink);
}
@media (max-width: 860px){
  .nav-links, .nav-cta{ display:none; }
  .menu-btn{ display:block; }
  .nav-links.open{
    display:flex; flex-direction:column; align-items:stretch; gap:0;
    position:absolute; top:var(--header-h); left:0; right:0;
    background:var(--bg); border-bottom:1px solid var(--line);
    box-shadow:0 16px 32px rgba(22,24,15,.06);
  }
  .nav-links.open li{ border-top:1px solid var(--line); }
  .nav-links.open a{ display:block; padding:18px var(--pad); font-size:16px; color:var(--ink); }
}

/* ---------- Buttons & links ---------- */
.btn{
  display:inline-block; text-decoration:none; font-size:15px; font-weight:700;
  padding:15px 32px; border-radius:10px; transition:background .2s, color .2s, transform .15s;
}
.btn-solid{ background:var(--ink); color:var(--bg); }
.btn-solid:hover, .btn-solid:focus-visible{ background:var(--green-ink); }
.btn-ghost{ border:1.5px solid var(--ink); color:var(--ink); }
.btn-ghost:hover, .btn-ghost:focus-visible{ background:var(--ink); color:var(--bg); }
.text-link{
  font-weight:700; font-size:15px; text-decoration:none; color:var(--green-ink);
}
.text-link:hover, .text-link:focus-visible{ text-decoration:underline; text-underline-offset:4px; }

/* ---------- Hero (home) ---------- */
.hero{ padding:clamp(64px, 10vh, 120px) 0; }
.hero-grid{
  display:grid; grid-template-columns: 1.5fr auto; gap:clamp(36px,6vw,80px);
  align-items:center;
}
.status{
  display:inline-flex; align-items:center; gap:9px;
  font-family:"Space Mono", monospace; font-size:12px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--green-ink); background:var(--green-soft);
  border-radius:999px; padding:8px 18px; margin-bottom:26px;
}
.status .dot{ width:8px; height:8px; border-radius:50%; background:var(--green); animation:pulse 2.4s infinite; }
@keyframes pulse{ 0%,100%{opacity:1} 50%{opacity:.35} }
.hero h1{ font-size:clamp(40px, 6.4vw, 76px); }
.hero h1 .accent{ color:var(--green); }
.hero .tagline{
  margin-top:26px; max-width:50ch; font-size:clamp(16px,1.6vw,18px); color:var(--muted);
}
.hero-actions{ margin-top:38px; display:flex; gap:14px; flex-wrap:wrap; }
.portrait-frame{
  position:relative;
  width:min(100%, 280px); aspect-ratio:1/1; flex:none;
  border-radius:50%; overflow:hidden;
  background:var(--green-soft); border:1px solid var(--line);
}
.portrait-frame img{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; border-radius:50%;
}
.portrait-ring{
  position:relative; justify-self:center; align-self:center;
  margin-inline:auto; padding:14px;
  border-radius:50%; border:1.5px dashed var(--green);
}
@media (max-width: 860px){
  .hero-grid{ grid-template-columns:1fr; }
  .portrait-ring{ grid-row:1; }
  .portrait-frame{ width:min(52vw, 220px); }
}

/* ---------- Sections ---------- */
section{ padding:clamp(60px, 9vh, 110px) 0; border-top:1px solid var(--line); }
.section-head{ display:flex; align-items:baseline; justify-content:space-between; gap:24px; flex-wrap:wrap; margin-bottom:44px; }
.section-head h2{ font-size:clamp(28px,3.6vw,44px); margin-top:14px; }

/* ---------- Client logos ---------- */
.clients{ padding:36px 0; border-top:1px solid var(--line); }
.clients p{
  font-family:"Space Mono", monospace; font-size:11px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted); text-align:center; margin-bottom:24px;
}
.logo-row{
  display:flex; justify-content:center; align-items:center; gap:clamp(28px,5vw,64px); flex-wrap:wrap;
}
.logo-row img{
  height:44px; width:auto; max-width:150px; object-fit:contain;
  filter:grayscale(1); opacity:.65; transition:filter .25s, opacity .25s;
}
.logo-row img:hover{ filter:none; opacity:1; }
/* Touch devices never hover, so show the logos as they are */
@media (hover: none){
  .logo-row img{ filter:none; opacity:.9; }
}

/* ---------- About ---------- */
.about-grid{ display:grid; grid-template-columns: 1.3fr 1fr; gap:clamp(36px,6vw,80px); align-items:start; }
.about-grid .body{ color:var(--muted); max-width:58ch; font-size:17px; }
.about-grid .body + .body{ margin-top:18px; }
.about-links{ margin-top:30px; display:flex; gap:28px; flex-wrap:wrap; }
.fact-list{ list-style:none; border-top:1px solid var(--line); }
.fact-list li{
  display:flex; justify-content:space-between; gap:16px; align-items:baseline;
  padding:18px 0; border-bottom:1px solid var(--line);
}
.fact-list .k{ font-family:"Space Mono", monospace; font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); }
.fact-list .v{ font-weight:700; text-align:right; }
@media (max-width: 860px){ .about-grid{ grid-template-columns:1fr; } }

/* ---------- Services ---------- */
.svc-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:26px; }
.svc{
  background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:34px;
}
.svc h3{ font-size:21px; margin-bottom:12px; }
.svc p{ font-size:15px; color:var(--muted); }
@media (max-width: 720px){ .svc-grid{ grid-template-columns:1fr; } }

/* ---------- Experience ---------- */
.xp-list{ list-style:none; border-top:1px solid var(--line); }
.xp-list li{
  display:grid; grid-template-columns: 1fr auto; gap:8px 24px; align-items:baseline;
  padding:26px 0; border-bottom:1px solid var(--line);
}
.xp-role{ font-family:"Syne", sans-serif; font-weight:600; font-size:clamp(19px,2.4vw,25px); }
.xp-org{ font-size:14.5px; color:var(--muted); font-weight:600; }

/* ---------- Work ---------- */
.work-grid{ display:grid; grid-template-columns:repeat(3, 1fr); gap:26px; }
.project{
  text-decoration:none; display:flex; flex-direction:column;
  background:var(--surface); border:1px solid var(--line); border-radius:16px; overflow:hidden;
  transition:transform .18s ease, box-shadow .18s ease;
}
.project:hover, .project:focus-visible{
  transform:translateY(-5px);
  box-shadow:0 18px 40px rgba(22,24,15,.08);
}
.project img{ aspect-ratio:16/10; object-fit:cover; object-position:top; width:100%; height:auto; border-bottom:1px solid var(--line); }
.project .info{ padding:24px 26px 28px; }
.project .type{
  font-family:"Space Mono", monospace; font-size:11px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--green-ink);
}
.project h3{ margin-top:10px; font-size:22px; }
.project p{ margin-top:8px; font-size:14.5px; color:var(--muted); }
.project .go{ margin-top:16px; font-weight:700; font-size:14px; color:var(--green-ink); display:block; }
@media (max-width: 960px){ .work-grid{ grid-template-columns:1fr; } .project img{ aspect-ratio:16/8; } }

/* ---------- Testimonials ---------- */
.quote-grid{ display:grid; grid-template-columns:1fr 1fr; gap:26px; }
.quote{
  border:1px solid var(--line); border-radius:16px; padding:36px;
  display:flex; flex-direction:column; gap:22px; background:var(--bg);
}
.quote blockquote{ font-size:clamp(16.5px,1.8vw,19px); line-height:1.6; font-weight:500; }
.quote .who{ display:flex; align-items:center; gap:14px; }
.quote .who img{ width:44px; height:44px; border-radius:10px; object-fit:contain; background:#fff; border:1px solid var(--line); padding:4px; flex:none; }
.quote .who p{ font-size:14px; color:var(--muted); }
.quote .who strong{ display:block; color:var(--ink); font-size:15px; }
@media (max-width: 720px){ .quote-grid{ grid-template-columns:1fr; } }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns: 1fr 1.15fr; gap:clamp(36px,6vw,72px); }
.contact-info p{ color:var(--muted); max-width:42ch; }
.contact-info dl{ margin-top:30px; display:grid; gap:18px; }
.contact-info dt{
  font-family:"Space Mono", monospace; font-size:11px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted);
}
.contact-info dd a{ text-decoration:none; font-size:17px; font-weight:700; }
.contact-info dd a:hover{ color:var(--green-ink); }
form{ display:grid; gap:18px; }
.field label{
  display:block; font-size:13.5px; font-weight:700; margin-bottom:7px;
}
.field input, .field textarea{
  width:100%; background:#fff; border:1px solid var(--line); border-radius:10px;
  padding:14px 16px; font:inherit; color:var(--ink);
}
.field textarea{ resize:vertical; min-height:120px; }
.field input:focus, .field textarea:focus{
  outline:2px solid var(--green); outline-offset:1px; border-color:var(--green);
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
form button{
  justify-self:start; cursor:pointer; border:none; font:inherit; font-weight:700; font-size:15px;
  background:var(--ink); color:var(--bg); padding:15px 34px; border-radius:10px;
  transition:background .2s;
}
form button:hover, form button:focus-visible{ background:var(--green-ink); }
.form-note{ font-size:13.5px; color:var(--green-ink); font-weight:600; }
.form-note:empty{ display:none; }
.hp{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
@media (max-width: 860px){
  .contact-grid{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
}

/* ---------- Footer ---------- */
footer{ border-top:1px solid var(--line); background:var(--surface); padding:42px 0; }
.foot{ display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap; }
.foot .small{ font-size:13.5px; color:var(--muted); }
.socials{ display:flex; gap:26px; list-style:none; }
.socials a{ text-decoration:none; font-size:14px; font-weight:700; }
.socials a:hover{ color:var(--green-ink); }

/* ---------- Case study pages ---------- */
.case-hero{ padding:clamp(56px,9vh,100px) 0 clamp(40px,6vh,64px); }
.case-hero h1{ font-size:clamp(36px,5.6vw,66px); margin-top:16px; max-width:18ch; }
.case-hero .intro{ margin-top:24px; max-width:62ch; font-size:clamp(16px,1.7vw,18.5px); color:var(--muted); }
.case-meta{
  margin-top:40px; display:grid; grid-template-columns:repeat(4, auto); gap:16px clamp(28px,5vw,72px);
  border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:22px 0;
  justify-content:start;
}
.case-meta .k{ font-family:"Space Mono", monospace; font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }
.case-meta .v{ font-weight:700; font-size:15px; margin-top:4px; }
@media (max-width: 720px){ .case-meta{ grid-template-columns:1fr 1fr; } }

.case-body{ padding:clamp(40px,6vh,72px) 0; border-top:none; }
.case-section{ margin-bottom:clamp(48px,7vh,80px); }
.case-section h2{ font-size:clamp(24px,3vw,34px); margin-bottom:18px; }
.case-section p{ color:var(--muted); max-width:70ch; font-size:16.5px; }
.case-section p + p{ margin-top:14px; }
.case-gallery{ margin-top:28px; display:grid; grid-template-columns:1fr 1fr; gap:22px; }
.case-gallery figure{
  border:1px solid var(--line); border-radius:14px; overflow:hidden; background:#fff;
}
.case-gallery img{ width:100%; height:auto; }
.case-gallery figcaption{
  font-family:"Space Mono", monospace; font-size:11.5px; letter-spacing:.08em;
  color:var(--muted); padding:12px 16px; border-top:1px solid var(--line);
}
.case-gallery .full{ grid-column:1 / -1; }
@media (max-width: 720px){ .case-gallery{ grid-template-columns:1fr; } }

.pdf-link{ margin-top:26px; }

.case-nav{
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  border-top:1px solid var(--line); padding:34px 0 8px;
}
.case-nav a{ text-decoration:none; font-weight:700; }
.case-nav a:hover{ color:var(--green-ink); }
.case-nav a.next{ text-align:right; margin-left:auto; }
.case-nav .dir{
  display:block; font-family:"Space Mono", monospace; font-size:11px;
  letter-spacing:.14em; text-transform:uppercase; color:var(--muted); margin-bottom:6px; font-weight:400;
}

/* ---------- Simple message pages (thanks, not found) ---------- */
.msg{ padding:clamp(80px,14vh,160px) 0; text-align:center; }
.msg h1{ font-size:clamp(32px,5vw,56px); margin:18px 0 20px; }
.msg p{ color:var(--muted); max-width:52ch; margin:0 auto 32px; }
.msg .label{ justify-content:center; }

/* ---------- Reveal on scroll ----------
   Only hidden once scripting is confirmed, so if the script fails to load the
   page still renders every section at full opacity. */
html:not(.no-js) .reveal{ opacity:0; transform:translateY(12px); transition:opacity .4s ease, transform .4s ease; }
html:not(.no-js) .reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ html:not(.no-js) .reveal{ opacity:1; transform:none; } }

/* ---------- Print ---------- */
@media print{
  header, footer, .case-nav, .hero-actions, .menu-btn, form, .skip-link{ display:none !important; }
  body{ background:#fff; color:#000; font-size:11pt; }
  .reveal{ opacity:1 !important; transform:none !important; }
  .case-gallery{ grid-template-columns:1fr 1fr; }
  a[href^="http"]::after{ content:" (" attr(href) ")"; font-size:9pt; color:#555; }
  section{ border:none; page-break-inside:avoid; }
}

/* ---------- Utility pages (404, thanks) ---------- */
.msg{
  padding:clamp(80px,16vh,160px) 0;
  display:flex; flex-direction:column; align-items:flex-start; gap:20px;
  min-height:52vh;
}
.msg h1{ font-size:clamp(34px,5.2vw,58px); max-width:16ch; }
.msg p{ color:var(--muted); max-width:52ch; font-size:17px; }
.msg .btn{ margin-top:10px; }