/* ===================================================================
   Ajay Rajendran — Portfolio
   Token system: deep ink background, signal-lime + coral accents,
   Space Grotesk (display) / Inter (body) / JetBrains Mono (data).
   Signature element: the metrics ticker — a live-feeling readout of
   real campaign numbers, because that's literally the job.
   =================================================================== */

:root{
  --bg: #0A0D16;
  --surface: #131725;
  --surface-2: #1B2033;
  --line: rgba(241,243,245,0.09);
  --line-strong: rgba(241,243,245,0.18);
  --text: #F2F4F6;
  --muted: #8D96AA;
  --lime: #C9FF4D;
  --lime-dim: #9FCC3E;
  --coral: #FF6B4A;
  --ink-on-lime: #0A0D16;

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --container: 1180px;
  --radius: 14px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* faint dot-grid atmosphere */
body::before{
  content:"";
  position: fixed; inset:0;
  background-image: radial-gradient(rgba(241,243,245,0.06) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family: var(--font-display); margin:0; font-weight: 600; letter-spacing: -0.01em; }
p{ margin:0; }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap{ max-width: var(--container); margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{ content:""; width:16px; height:1px; background: var(--lime); }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-body); font-weight:600; font-size:15px;
  padding: 13px 24px; border-radius: 999px;
  border: 1px solid var(--line-strong);
  transition: transform .25s var(--ease), background .25s, border-color .25s, color .25s;
  cursor:pointer; background: transparent; color: var(--text);
}
.btn:hover{ transform: translateY(-2px); border-color: var(--lime); }
.btn-primary{ background: var(--lime); color: var(--ink-on-lime); border-color: var(--lime); }
.btn-primary:hover{ background: #DBFF7A; }
.btn svg{ width:14px; height:14px; }

/* ---------- nav ---------- */
.site-nav{
  position: sticky; top:0; z-index: 50;
  background: rgba(10,13,22,0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.site-nav .wrap{ display:flex; align-items:center; justify-content:space-between; height:74px; }
.logo{ display:flex; align-items:center; gap:10px; }
.logo-mark{ height:32px; width:auto; display:block; }
.logo-word{ height:16px; width:auto; display:block; }
@media (max-width:420px){ .logo-word{ display:none; } }
.nav-links{ display:flex; align-items:center; gap:2px; }
.nav-links a{
  font-size:14.5px; font-weight:500; color: var(--muted);
  padding:10px 16px; border-radius:999px; transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active{ color: var(--text); background: var(--surface-2); }
.nav-links a.active{ color: var(--lime); }
.nav-cta{ display:flex; align-items:center; gap:14px; }
.nav-toggle{ display:none; }

@media (max-width: 860px){
  .nav-links{
    position:fixed; inset: 74px 0 0 0; height: calc(100vh - 74px);
    background: var(--bg); flex-direction:column; align-items:stretch;
    padding: 18px; gap:6px; transform: translateX(100%);
    transition: transform .35s var(--ease); overflow-y:auto;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-links a{ padding:16px 14px; font-size:17px; border-bottom:1px solid var(--line); border-radius:0; }
  .nav-cta .btn-secondary{ display:none; }
  .nav-toggle{
    display:flex; flex-direction:column; justify-content:center; gap:5px;
    width:38px; height:38px; background:none; border:none; cursor:pointer; z-index:60;
  }
  .nav-toggle span{ height:2px; width:100%; background: var(--text); transition: transform .3s, opacity .3s; }
  .nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2){ opacity:0; }
  .nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- hero ---------- */
.hero{ padding: 96px 0 56px; }
.hero-grid{ display:grid; grid-template-columns: 1.3fr 0.9fr; gap:56px; align-items:center; }
.hero h1{ font-size: clamp(2.4rem, 4.6vw, 3.9rem); line-height:1.05; margin: 18px 0 22px; }
.hero h1 em{ font-style:normal; color: var(--lime); }
.hero-sub{ color: var(--muted); font-size:18px; max-width:52ch; margin-bottom:34px; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

.hero-card{
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding: 26px; position:relative; overflow:hidden;
}
.hero-card::after{
  content:""; position:absolute; inset:-40% -40% auto auto; width:220px; height:220px;
  background: radial-gradient(circle, rgba(201,255,77,0.25), transparent 70%);
}
.hero-avatar{
  width:64px; height:64px; border-radius:16px; margin-bottom:18px;
  background: var(--surface-2); border: 1px solid var(--line-strong);
  display:flex; align-items:center; justify-content:center; padding:12px;
}
.hero-avatar img{ width:100%; height:100%; object-fit:contain; }
.hero-card h3{ font-size:19px; margin-bottom:6px; }
.hero-card p{ color:var(--muted); font-size:14.5px; }
.hero-stat-row{ display:flex; gap:22px; margin-top:22px; padding-top:20px; border-top:1px solid var(--line); }
.hero-stat b{ display:block; font-family: var(--font-mono); font-size:20px; color:var(--lime); }
.hero-stat span{ font-size:12px; color:var(--muted); }

/* ---------- ticker (signature element) ---------- */
.ticker{
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background: var(--surface); overflow:hidden; white-space:nowrap;
  padding: 16px 0;
}
.ticker-track{ display:inline-flex; gap:0; animation: ticker 34s linear infinite; }
.ticker:hover .ticker-track{ animation-play-state: paused; }
@keyframes ticker{ from{ transform: translateX(0); } to{ transform: translateX(-50%); } }
.ticker-item{
  display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-mono); font-size:14px; color: var(--text);
  padding: 0 30px; border-right: 1px solid var(--line);
}
.ticker-item b{ color: var(--lime); }
.ticker-item .dot{ width:6px; height:6px; border-radius:50%; background: var(--coral); }

/* ---------- section scaffolding ---------- */
.section{ padding: 88px 0; }
.section-head{ margin-bottom: 44px; display:flex; justify-content:space-between; align-items:flex-end; gap:20px; flex-wrap:wrap; }
.section-head h2{ font-size: clamp(1.7rem, 3vw, 2.4rem); margin-top:14px; }
.section-head .section-link{ font-size:14px; color: var(--muted); border-bottom:1px solid var(--line-strong); padding-bottom:2px; transition: color .2s, border-color .2s; }
.section-head .section-link:hover{ color: var(--lime); border-color: var(--lime); }

/* reveal-on-scroll */
.reveal{ opacity:0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }

/* ---------- about preview (home) ---------- */
.about-preview{ display:grid; grid-template-columns: 0.85fr 1.15fr; gap:56px; align-items:center; }
.about-preview p{ color: var(--muted); font-size:16.5px; margin-bottom:16px; }
.about-preview .avatar-block{
  aspect-ratio: 4/5; border-radius: var(--radius); border:1px solid var(--line);
  background: linear-gradient(155deg, var(--surface-2), var(--surface) 60%);
  display:flex; align-items:center; justify-content:center; position:relative; overflow:hidden;
}
.avatar-block .big-initials{ font-family: var(--font-display); font-size: 96px; font-weight:700; color: var(--line-strong); }
.avatar-block svg{ position:absolute; inset:0; width:100%; height:100%; opacity:.5; }
.avatar-photo{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; object-position: center 20%;
  filter: grayscale(35%) contrast(1.05);
}
.avatar-block::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(10,13,22,0) 55%, rgba(10,13,22,0.65) 100%),
              linear-gradient(155deg, rgba(201,255,77,0.12), rgba(255,107,74,0.1));
  pointer-events:none;
}

/* ---------- work grid (scrolling row, home) ---------- */
.work-row{ display:flex; gap:20px; overflow-x:auto; padding-bottom:12px; scroll-snap-type: x mandatory; }
.work-row::-webkit-scrollbar{ height:6px; }
.work-row::-webkit-scrollbar-thumb{ background: var(--line-strong); border-radius:4px; }
.work-card{
  flex: 0 0 320px; scroll-snap-align: start;
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding:26px; transition: transform .3s var(--ease), border-color .3s;
}
.work-card:hover{ transform: translateY(-6px); border-color: var(--lime); }
.work-card .tag{ font-family: var(--font-mono); font-size:11.5px; color: var(--coral); text-transform:uppercase; letter-spacing:.08em; }
.work-card h3{ font-size:20px; margin: 12px 0 8px; }
.work-card .metric{ font-family: var(--font-mono); font-size:26px; color: var(--lime); margin: 14px 0 6px; }
.work-card .metric-label{ font-size:12.5px; color:var(--muted); margin-bottom:14px; }
.work-card p.desc{ color:var(--muted); font-size:14px; }

/* ---------- feature banner ---------- */
.banner{
  background: linear-gradient(120deg, var(--surface-2), var(--surface));
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding: 90px 0; text-align:center; position:relative; overflow:hidden;
}
.banner h2{
  font-size: clamp(3rem, 9vw, 7rem); line-height:0.95;
  color: transparent; -webkit-text-stroke: 1.5px var(--line-strong);
}
.banner h2 .fill{ -webkit-text-stroke: 0; color: var(--lime); }
.banner p{ color: var(--muted); margin: 22px auto 30px; max-width: 50ch; font-size:16px; }

/* ---------- footer ---------- */
.site-footer{ padding: 56px 0 40px; border-top:1px solid var(--line); }
.footer-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:30px; flex-wrap:wrap; margin-bottom:36px; }
.footer-links{ display:flex; gap:26px; flex-wrap:wrap; }
.footer-links a{ font-size:14px; color: var(--muted); transition: color .2s; }
.footer-links a:hover{ color: var(--lime); }
.footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:13px; color: var(--muted); }

/* ---------- case study cards (work page) ---------- */
.case{
  border:1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  padding: 36px; margin-bottom: 22px; display:grid; grid-template-columns: 1fr 260px; gap:34px;
}
.case-tag{ font-family: var(--font-mono); font-size:11.5px; color: var(--coral); text-transform:uppercase; letter-spacing:.08em; }
.case h3{ font-size:24px; margin:10px 0 4px; }
.case .client{ color: var(--muted); font-size:14px; margin-bottom:18px; }
.case ul{ display:flex; flex-direction:column; gap:9px; margin-bottom:18px; }
.case li{ font-size:14.5px; color: var(--text); padding-left:18px; position:relative; }
.case li::before{ content:"•"; position:absolute; left:0; color: var(--lime); }
.case-tools{ display:flex; gap:8px; flex-wrap:wrap; }
.chip{ font-family: var(--font-mono); font-size:11.5px; padding:5px 10px; border-radius:999px; border:1px solid var(--line-strong); color:var(--muted); }
.case-metric{ background: var(--surface-2); border-radius:12px; padding:22px; align-self:start; }
.case-metric b{ display:block; font-family: var(--font-mono); font-size:32px; color: var(--lime); line-height:1.1; }
.case-metric span{ font-size:12.5px; color:var(--muted); }
.case-metric .row{ margin-bottom:16px; }
.case-metric .row:last-child{ margin-bottom:0; }
.case-link{ margin-top:16px; display:inline-flex; font-size:13px; color:var(--lime); border-bottom:1px solid var(--lime); }

@media (max-width: 760px){
  .case{ grid-template-columns: 1fr; }
}

/* ---------- about page ---------- */
.about-hero{ display:grid; grid-template-columns: 0.7fr 1.3fr; gap:50px; align-items:center; padding: 70px 0 20px;}
.skills-groups{ display:grid; grid-template-columns: repeat(2,1fr); gap:26px; }
.skill-group{ border:1px solid var(--line); border-radius: var(--radius); padding:22px; background: var(--surface); }
.skill-group h4{ font-size:14px; font-family: var(--font-mono); color: var(--coral); text-transform:uppercase; letter-spacing:.06em; margin-bottom:14px; }
.skill-chips{ display:flex; flex-wrap:wrap; gap:8px; }
.skill-chips span{ font-size:13px; padding:6px 12px; border-radius:999px; background: var(--surface-2); color:var(--text); }

.timeline{ position:relative; padding-left: 28px; border-left: 1px solid var(--line); }
.tl-item{ position:relative; padding-bottom: 34px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-item::before{ content:""; position:absolute; left:-33px; top:4px; width:9px; height:9px; border-radius:50%; background: var(--lime); box-shadow: 0 0 0 4px rgba(201,255,77,0.15); }
.tl-item .when{ font-family: var(--font-mono); font-size:12px; color: var(--muted); margin-bottom:6px; display:block; }
.tl-item h4{ font-size:17px; margin-bottom:4px; }
.tl-item .place{ font-size:13.5px; color: var(--coral); margin-bottom:10px; }
.tl-item p{ font-size:14.5px; color: var(--muted); }

.cert-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:12px; }
.cert{ border:1px solid var(--line); border-radius:10px; padding:16px 18px; background:var(--surface); font-size:14px; display:flex; justify-content:space-between; gap:10px; }
.cert span.issuer{ color:var(--muted); font-size:12.5px; display:block; margin-top:3px; }
.cert time{ font-family: var(--font-mono); font-size:12px; color:var(--lime); white-space:nowrap; }

@media (max-width: 860px){
  .about-hero, .skills-groups, .cert-grid{ grid-template-columns: 1fr; }
}

/* ---------- contact page ---------- */
.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:56px; align-items:start; padding: 60px 0 20px; }
.contact-card{
  border:1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  padding: 26px; display:flex; justify-content:space-between; align-items:center; gap:16px; margin-bottom:14px;
}
.contact-card .label{ font-size:12px; color:var(--muted); font-family: var(--font-mono); text-transform:uppercase; letter-spacing:.08em; margin-bottom:6px; }
.contact-card .value{ font-size:17px; font-weight:600; }
.copy-btn{
  border:1px solid var(--line-strong); background:none; color:var(--text); border-radius:999px;
  padding:8px 16px; font-size:13px; cursor:pointer; transition: border-color .2s, color .2s;
  font-family: var(--font-body);
}
.copy-btn:hover{ border-color: var(--lime); color: var(--lime); }
.contact-note{ color:var(--muted); font-size:15px; margin-top:20px; }

@media (max-width: 860px){
  .hero-grid, .about-preview{ grid-template-columns: 1fr; }
  .hero-card{ order:-1; }
  .contact-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 560px){
  .section{ padding: 60px 0; }
  .hero{ padding: 70px 0 40px; }
  .work-card{ flex-basis: 260px; }
}