/* =====================================================
   Rifa Tasfia Ratri — portfolio
   Palette drawn from the portrait: plum-ink ground,
   rose accent, warm amber highlight.
   ===================================================== */

/* ---------- tokens ---------- */
:root{
  --bg:            #0C0A10;
  --bg-2:          #131019;
  --bg-3:          #1A1622;
  --line:          rgba(242,237,233,0.10);
  --line-strong:   rgba(242,237,233,0.18);
  --text:          #F2EDE9;
  --text-2:        #C5BDC8;
  --text-dim:      #8E8697;
  --accent:        #E8538A;
  --accent-soft:   #F58FB3;
  --amber:         #E8A33D;
  --glow-a:        rgba(232,83,138,0.30);
  --glow-b:        rgba(232,163,61,0.16);
  --shadow:        0 26px 60px -34px rgba(0,0,0,0.85);

  --font-display:  "Bricolage Grotesque", Georgia, serif;
  --font-body:     "Manrope", system-ui, -apple-system, sans-serif;
  --font-mono:     "JetBrains Mono", ui-monospace, monospace;

  --shell:         1200px;
  --pad:           clamp(20px, 5vw, 56px);
  --r-sm:          10px;
  --r-md:          16px;
  --r-lg:          26px;
  --ease:          cubic-bezier(.22,.61,.36,1);
}

:root[data-theme="light"]{
  --bg:            #F7F4F0;
  --bg-2:          #FFFFFF;
  --bg-3:          #F0EAE5;
  --line:          rgba(22,17,28,0.11);
  --line-strong:   rgba(22,17,28,0.20);
  --text:          #17121C;
  --text-2:        #463E4E;
  --text-dim:      #6B6274;
  --accent:        #C2185B;
  --accent-soft:   #A8134E;
  --amber:         #9C6A12;
  --glow-a:        rgba(194,24,91,0.14);
  --glow-b:        rgba(156,106,18,0.10);
  --shadow:        0 24px 50px -34px rgba(23,18,28,0.30);
}

/* ---------- base ---------- */
*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; scroll-padding-top:90px; }

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .4s var(--ease), color .4s var(--ease);
}

img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3{ margin:0; font-family:var(--font-display); font-weight:600; line-height:1.06; letter-spacing:-0.02em; }
p{ margin:0; }

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

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

.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad);
}

.skip{
  position:absolute; left:-9999px; top:10px;
  background:var(--accent); color:#fff;
  padding:10px 16px; border-radius:var(--r-sm);
  z-index:300;
}
.skip:focus{ left:16px; }

/* ---------- ambient glow + progress ---------- */
.glow{
  position:fixed;
  top:0; left:0;
  width:640px; height:640px;
  margin:-320px 0 0 -320px;
  border-radius:50%;
  background:radial-gradient(circle, var(--glow-a) 0%, transparent 62%);
  filter:blur(40px);
  pointer-events:none;
  z-index:0;
  opacity:0;
  transition:opacity .8s var(--ease);
  will-change:transform;
}
.glow.on{ opacity:1; }

.progress{
  position:fixed;
  top:0; left:0;
  height:2px;
  width:0%;
  background:linear-gradient(90deg, var(--accent), var(--amber));
  z-index:250;
}

/* ---------- nav ---------- */
.nav{
  position:fixed;
  inset:0 0 auto 0;
  z-index:200;
  transition:background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.stuck{
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-display);
  font-weight:600;
  font-size:17px;
  letter-spacing:-0.01em;
}
.brand-mark{
  width:11px; height:11px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent);
  flex:none;
}
.nav-links{ display:flex; gap:4px; }
.nav-link{
  position:relative;
  padding:8px 13px;
  font-size:14.5px;
  font-weight:500;
  color:var(--text-dim);
  border-radius:99px;
  transition:color .25s var(--ease), background .25s var(--ease);
}
.nav-link:hover{ color:var(--text); }
.nav-link.active{
  color:var(--text);
  background:color-mix(in srgb, var(--text) 8%, transparent);
}
.nav-actions{ display:flex; align-items:center; gap:8px; }

.icon-btn{
  width:38px; height:38px;
  display:grid; place-items:center;
  border:1px solid var(--line);
  border-radius:50%;
  background:transparent;
  color:var(--text);
  cursor:pointer;
  transition:border-color .25s var(--ease), background .25s var(--ease), transform .2s var(--ease);
}
.icon-btn:hover{ border-color:var(--line-strong); background:color-mix(in srgb, var(--text) 6%, transparent); }
.icon-btn:active{ transform:scale(.94); }

.ico-sun{ display:none; }
:root[data-theme="light"] .ico-sun{ display:block; }
:root[data-theme="light"] .ico-moon{ display:none; }

.menu-btn{ display:none; flex-direction:column; gap:4px; }
.menu-btn .bar{
  width:15px; height:1.6px;
  background:currentColor;
  border-radius:2px;
  transition:transform .28s var(--ease), opacity .2s var(--ease);
}
.menu-btn[aria-expanded="true"] .bar:first-child{ transform:translateY(2.8px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .bar:last-child{ transform:translateY(-2.8px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero{
  position:relative;
  z-index:1;
  padding:calc(72px + clamp(56px, 10vh, 110px)) 0 clamp(60px, 9vh, 104px);
}
.hero-inner{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);
  gap:clamp(36px, 6vw, 80px);
  align-items:center;
}

.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-dim);
  border:1px solid var(--line);
  border-radius:99px;
  padding:7px 14px 7px 11px;
  margin-bottom:26px;
}
.pulse{
  width:7px; height:7px; border-radius:50%;
  background:var(--accent);
  flex:none;
  position:relative;
}
.pulse::after{
  content:"";
  position:absolute; inset:0;
  border-radius:50%;
  background:var(--accent);
  animation:ping 2.2s var(--ease) infinite;
}
@keyframes ping{
  0%{ transform:scale(1); opacity:.7; }
  70%,100%{ transform:scale(3); opacity:0; }
}

.hero-title{
  font-size:clamp(46px, 8.4vw, 104px);
  font-weight:700;
  letter-spacing:-0.035em;
}
.hero-title .line{ display:block; overflow:hidden; padding-bottom:.06em; }
.hero-title .word{
  display:inline-block;
  transform:translateY(105%);
  animation:riseIn .95s var(--ease) forwards;
}
.hero-title .line:nth-child(1) .word:nth-child(1){ animation-delay:.05s; }
.hero-title .line:nth-child(1) .word:nth-child(2){ animation-delay:.14s; }
.hero-title .line:nth-child(2) .word:nth-child(1){ animation-delay:.23s; }
.hero-title .accent{
  color:var(--accent);
  font-style:italic;
  font-weight:500;
}
@keyframes riseIn{ to{ transform:translateY(0); } }

.hero-role{
  margin-top:20px;
  font-size:clamp(17px, 2.2vw, 21px);
  font-weight:500;
  color:var(--text-2);
}
.rotator{
  display:inline-block;
  min-width:11ch;
  color:var(--amber);
  font-family:var(--font-mono);
  font-size:.86em;
  border-bottom:1.5px dashed color-mix(in srgb, var(--amber) 45%, transparent);
  padding-bottom:1px;
}

.hero-lede{
  margin-top:22px;
  max-width:53ch;
  color:var(--text-dim);
  font-size:16.5px;
}

.hero-actions{
  margin-top:34px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 22px;
  border-radius:99px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn svg{ transition:transform .3s var(--ease); }
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 14px 30px -16px var(--accent);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 20px 38px -16px var(--accent); }
.btn-primary:hover svg{ transform:translateX(4px); }
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}
.btn-ghost:hover svg{ transform:translateY(2px); }

/* portrait */
.hero-visual{ justify-self:end; width:100%; max-width:380px; }
.portrait{
  position:relative;
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow);
  animation:fadeUp 1s var(--ease) .3s backwards;
}
.portrait img{
  width:100%;
  aspect-ratio:1/1;
  object-fit:cover;
  transition:transform .7s var(--ease);
}
.portrait:hover img{ transform:scale(1.035); }
.portrait-badge{
  position:absolute;
  left:14px; bottom:14px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:99px;
  font-family:var(--font-mono);
  font-size:12px;
  color:#fff;
  background:rgba(12,10,16,0.62);
  backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,0.14);
}
@keyframes fadeUp{ from{ opacity:0; transform:translateY(22px); } }

.portrait-stats{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  animation:fadeUp 1s var(--ease) .45s backwards;
}
.portrait-stats li{
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:12px 10px;
  text-align:center;
}
.portrait-stats strong{
  display:block;
  font-family:var(--font-display);
  font-size:21px;
  font-weight:700;
  letter-spacing:-0.02em;
}
.portrait-stats span{
  display:block;
  margin-top:2px;
  font-size:11.5px;
  color:var(--text-dim);
  line-height:1.3;
}

/* ---------- marquee ---------- */
.marquee{
  position:relative;
  z-index:1;
  border-block:1px solid var(--line);
  padding:16px 0;
  overflow:hidden;
  background:var(--bg-2);
  mask-image:linear-gradient(90deg, transparent, #000 9%, #000 91%, transparent);
}
.marquee-track{
  display:flex;
  align-items:center;
  gap:26px;
  width:max-content;
  animation:slide 34s linear infinite;
}
.marquee-track span{
  font-family:var(--font-display);
  font-size:clamp(20px, 2.6vw, 29px);
  font-weight:500;
  color:var(--text-dim);
  white-space:nowrap;
}
.marquee-track i{ color:var(--accent); font-size:12px; font-style:normal; }
@keyframes slide{ to{ transform:translateX(-50%); } }

/* ---------- sections ---------- */
.section{
  position:relative;
  z-index:1;
  padding:clamp(72px, 11vh, 118px) 0;
}
.section-alt{ background:var(--bg-2); border-block:1px solid var(--line); }

.sec-head{ margin-bottom:clamp(38px, 6vh, 62px); }
.sec-label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--accent);
  margin-bottom:14px;
}
.sec-title{
  font-size:clamp(28px, 4.2vw, 46px);
  max-width:20ch;
}

/* about */
.about-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,.85fr);
  gap:clamp(32px, 5vw, 66px);
  align-items:start;
}
.about-text p{ color:var(--text-2); max-width:62ch; }
.about-text p + p{ margin-top:16px; }

.about-card{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px;
  background:var(--bg-3);
}
.meta-list > div{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:14px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
}
.meta-list > div:last-of-type{ border-bottom:none; }
.meta-list dt{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-dim);
}
.meta-list dd{
  margin:0;
  font-size:14.5px;
  font-weight:600;
  text-align:right;
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  font-size:14.5px;
  font-weight:600;
  color:var(--accent);
}
.card-link svg{ transition:transform .3s var(--ease); }
.card-link:hover svg{ transform:translateX(4px); }

/* skills */
.skills-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(270px, 1fr));
  gap:18px;
}
.skill-card{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px;
  background:var(--bg);
  transition:border-color .3s var(--ease), transform .3s var(--ease);
}
.skill-card:hover{ border-color:var(--line-strong); transform:translateY(-3px); }
.skill-card h3{ font-size:20px; margin-bottom:9px; }
.skill-card p{ color:var(--text-dim); font-size:14.5px; margin-bottom:16px; }

.chips{ display:flex; flex-wrap:wrap; gap:7px; }
.chips li{
  font-family:var(--font-mono);
  font-size:12.5px;
  padding:5px 11px;
  border-radius:99px;
  border:1px solid var(--line);
  color:var(--text-2);
  background:color-mix(in srgb, var(--text) 4%, transparent);
}

/* timeline */
.timeline{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.tl-item{
  display:grid;
  grid-template-columns:200px minmax(0,1fr);
  gap:28px;
  padding:30px 0;
  border-top:1px solid var(--line);
}
.timeline .tl-item:last-child{ border-bottom:1px solid var(--line); }
.tl-when{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text-dim);
  padding-top:5px;
}
.tl-what h3{ font-size:24px; }
.tl-org{
  color:var(--accent);
  font-weight:600;
  font-size:15px;
  margin:5px 0 14px;
}
.tl-what ul li{
  position:relative;
  padding-left:20px;
  color:var(--text-2);
  font-size:15.5px;
  margin-bottom:7px;
}
.tl-what ul li::before{
  content:"";
  position:absolute;
  left:0; top:.63em;
  width:6px; height:6px;
  border-radius:50%;
  background:var(--accent);
  opacity:.65;
}

/* projects */
.proj-list{ display:flex; flex-direction:column; gap:20px; }
.proj{
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:24px;
  padding:32px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--bg);
  transition:border-color .35s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.proj:hover{
  border-color:color-mix(in srgb, var(--accent) 45%, transparent);
  transform:translateY(-4px);
  box-shadow:var(--shadow);
}
.proj-index{
  font-family:var(--font-display);
  font-size:56px;
  font-weight:700;
  line-height:1;
  letter-spacing:-0.04em;
  color:transparent;
  -webkit-text-stroke:1.4px var(--line-strong);
  transition:-webkit-text-stroke-color .35s var(--ease);
}
.proj:hover .proj-index{ -webkit-text-stroke-color:var(--accent); }
.proj-main h3{ font-size:clamp(22px, 3vw, 30px); }
.proj-sum{
  margin:10px 0 16px;
  color:var(--text-2);
  max-width:64ch;
}
.proj-points{ margin-bottom:18px; }
.proj-points li{
  position:relative;
  padding-left:20px;
  color:var(--text-dim);
  font-size:15px;
  margin-bottom:6px;
}
.proj-points li::before{
  content:"";
  position:absolute;
  left:0; top:.68em;
  width:9px; height:1.5px;
  background:var(--accent);
}

/* credentials */
.cred-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(280px,1fr));
  gap:clamp(24px, 4vw, 48px);
}
.cred-head{
  font-family:var(--font-mono);
  font-size:12.5px;
  font-weight:500;
  letter-spacing:0.02em;
  color:var(--accent);
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  margin-bottom:20px;
}
.cred-head-2{ margin-top:32px; }
.cred{ margin-bottom:22px; }
.cred:last-child{ margin-bottom:0; }
.c-t{ font-weight:700; font-size:15.5px; line-height:1.35; }
.c-s{ color:var(--text-dim); font-size:14px; margin-top:4px; line-height:1.45; }
.c-m{ font-family:var(--font-mono); font-size:12px; color:var(--amber); margin-top:6px; }

/* contact */
.contact{ padding-bottom:clamp(60px, 9vh, 96px); }
.contact-box{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(32px, 5vw, 62px);
  background:
    radial-gradient(760px 320px at 88% -10%, var(--glow-b), transparent 70%),
    var(--bg-2);
}
.contact-title{
  font-size:clamp(32px, 5.6vw, 60px);
  letter-spacing:-0.035em;
}
.contact-lede{
  margin-top:16px;
  max-width:46ch;
  color:var(--text-dim);
}
.contact-links{
  margin-top:36px;
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(250px,1fr));
  gap:2px;
  border-top:1px solid var(--line);
}
.c-link{
  display:flex;
  flex-direction:column;
  gap:5px;
  padding:20px 4px;
  border-bottom:1px solid var(--line);
  transition:padding-left .3s var(--ease), color .3s var(--ease);
}
.c-link:hover{ padding-left:12px; }
.c-key{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--text-dim);
}
.c-val{
  font-size:16.5px;
  font-weight:600;
  word-break:break-word;
  transition:color .3s var(--ease);
}
.c-link:hover .c-val{ color:var(--accent); }

/* footer */
.footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--line);
  padding:26px 0 34px;
  background:var(--bg);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-dim);
}

/* back to top */
.to-top{
  position:fixed;
  right:22px; bottom:22px;
  width:44px; height:44px;
  display:grid; place-items:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:var(--bg-2);
  color:var(--text);
  cursor:pointer;
  z-index:150;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .3s var(--ease), transform .3s var(--ease), visibility .3s, border-color .25s var(--ease);
}
.to-top.show{ opacity:1; visibility:visible; transform:none; }
.to-top:hover{ border-color:var(--accent); color:var(--accent); }

/* ---------- reveal on scroll ---------- */
.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .75s var(--ease), transform .75s var(--ease);
}
.reveal.in{ opacity:1; transform:none; }

/* ---------- responsive ---------- */
@media (max-width: 1000px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-visual{ justify-self:start; max-width:320px; }
  .about-grid{ grid-template-columns:1fr; }
  .tl-item{ grid-template-columns:1fr; gap:10px; }
  .tl-when{ padding-top:0; }
}

@media (max-width: 820px){
  .nav-links{
    position:fixed;
    top:72px; left:0; right:0;
    flex-direction:column;
    gap:2px;
    padding:14px var(--pad) 22px;
    background:var(--bg-2);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
  }
  .nav-links.open{ opacity:1; visibility:visible; transform:none; }
  .nav-link{ padding:12px 14px; font-size:16px; }
  .menu-btn{ display:flex; }
  .proj{ grid-template-columns:1fr; gap:12px; padding:26px; }
  .proj-index{ font-size:38px; }
  .to-top{ right:16px; bottom:16px; }
}

@media (max-width: 460px){
  .portrait-stats{ grid-template-columns:1fr; }
  .portrait-stats li{ display:flex; align-items:baseline; gap:10px; text-align:left; }
  .portrait-stats strong{ font-size:18px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .hero-title .word{ transform:none; }
  .reveal{ opacity:1; transform:none; }
  .glow{ display:none; }
}