/* ============================================================
   SURYA S — PORTFOLIO
   Design language: a dark "systems console" — deep navy panels,
   hairline dividers, an amber signal accent (nodding to his
   real-time GPS/dispatch work) and a mint accent for metrics.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  --ink:#0A0F1C;
  --panel:#131B2C;
  --panel-2:#1A2338;
  --line:#232D42;
  --text:#E9EDF5;
  --muted:#8891A5;
  --muted-dim:#5C6478;
  --signal:#FFB238;
  --signal-dim:#8a611f;
  --mint:#46E6B0;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;
  --maxw:1080px;
}

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

html{ scroll-behavior:smooth; }

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

body.lock{ overflow:hidden; height:100vh; }

h1,h2,h3{
  font-family:var(--font-display);
  color:var(--text);
  line-height:1.15;
  margin:0;
}

p{ margin:0; }

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

ul{ margin:0; padding:0; list-style:none; }

img{ max-width:100%; display:block; }

::selection{ background:var(--signal); color:var(--ink); }

:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}

.section-tag{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--signal);
  margin:0 0 14px;
}

.section-head{
  font-size:clamp(26px,3.4vw,36px);
  max-width:560px;
  margin-bottom:44px;
}

section{ padding:110px 0; border-bottom:1px solid var(--line); }
section:last-of-type{ border-bottom:none; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

/* ============================== LOADER ============================== */

#loader{
  position:fixed; inset:0; z-index:999;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:34px;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(255,178,56,0.10), transparent 60%),
    var(--ink);
  transition:opacity .9s ease, visibility .9s ease;
}

#loader.hide{ opacity:0; visibility:hidden; pointer-events:none; }

.loader-frame{
  width:190px; height:190px;
  border-radius:26px;
  padding:5px;
  background:linear-gradient(160deg, var(--signal), var(--panel) 60%);
  animation:spin-once 2.1s cubic-bezier(.65,0,.35,1) both;
  box-shadow:0 0 60px rgba(255,178,56,0.18);
}

.loader-frame img{
  width:100%; height:100%;
  object-fit:cover;
  border-radius:22px;
  display:block;
}

@keyframes spin-once{
  from{ transform:rotate(0deg) scale(.9); opacity:0; }
  15%{ opacity:1; }
  to{ transform:rotate(360deg) scale(1); opacity:1; }
}

.loader-text{
  text-align:center;
  opacity:0;
  animation:rise-in .7s ease forwards;
  animation-delay:1.5s;
}

.loader-text .l1{
  font-family:var(--font-display);
  font-size:clamp(22px,3vw,30px);
  font-weight:600;
}

.loader-text .l2{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--signal);
  margin-top:8px;
  letter-spacing:.02em;
}

@keyframes rise-in{
  from{ opacity:0; transform:translateY(14px); }
  to{ opacity:1; transform:translateY(0); }
}

/* ============================== NAV ============================== */

.nav{
  position:fixed; top:0; left:0; right:0; z-index:200;
  background:rgba(10,15,28,0.72);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  opacity:0; transform:translateY(-100%);
  transition:opacity .6s ease, transform .6s ease;
}

.nav.show{ opacity:1; transform:translateY(0); }

.nav-inner{
  max-width:var(--maxw); margin:0 auto; padding:0 32px;
  height:68px; display:flex; align-items:center; justify-content:space-between;
}

.nav-mark{
  font-family:var(--font-mono); font-size:15px; color:var(--text);
  display:flex; align-items:center; gap:9px;
}
.nav-mark .dot{
  width:8px; height:8px; border-radius:50%; background:var(--mint);
  box-shadow:0 0 8px var(--mint);
  animation:pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot{
  0%,100%{ opacity:1; transform:scale(1); }
  50%{ opacity:.5; transform:scale(.8); }
}

.nav-links{ display:flex; gap:34px; }

.nav-links a{
  position:relative; font-size:14.5px; color:var(--muted);
  padding:6px 0; transition:color .25s ease;
}
.nav-links a::after{
  content:''; position:absolute; left:0; bottom:0; height:1.5px; width:0;
  background:var(--signal); transition:width .32s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover, .nav-links a.active{ color:var(--text); }
.nav-links a:hover::after, .nav-links a.active::after{ width:100%; }

.nav-toggle{ display:none; }

@media (max-width:760px){
  .nav-links{
    position:fixed; top:68px; right:0; left:0;
    background:var(--panel); border-bottom:1px solid var(--line);
    flex-direction:column; gap:0; padding:8px 32px;
    transform:translateY(-8px); opacity:0; visibility:hidden;
    transition:opacity .25s ease, transform .25s ease, visibility .25s ease;
  }
  .nav-links.open{ opacity:1; visibility:visible; transform:translateY(0); }
  .nav-links a{ padding:14px 0; border-bottom:1px solid var(--line); }
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px; background:none; border:none;
    cursor:pointer; padding:8px;
  }
  .nav-toggle span{ width:22px; height:2px; background:var(--text); transition:transform .3s ease, opacity .3s ease; }
  .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); }
}

/* ============================== REVEAL ============================== */

.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

#main{ opacity:0; transition:opacity .8s ease; }
#main.revealed{ opacity:1; }

/* ============================== BUTTONS ============================== */

.btn{
  position:relative; display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-body); font-weight:600; font-size:14.5px;
  padding:13px 26px; border-radius:8px; border:1px solid transparent;
  cursor:pointer; overflow:hidden; isolation:isolate;
  transition:transform .3s cubic-bezier(.4,0,.2,1), border-color .3s ease, color .3s ease;
}
.btn:active{ transform:translateY(1px) scale(.98); }

.btn-primary{ background:var(--signal); color:#1A1204; }
.btn-primary::before{
  content:''; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(120deg, var(--mint), var(--signal));
  transform:translateX(-100%); transition:transform .45s cubic-bezier(.4,0,.2,1);
}
.btn-primary:hover::before{ transform:translateX(0); }
.btn-primary:hover{ transform:translateY(-2px); }

.btn-ghost{ background:transparent; border-color:var(--line); color:var(--text); }
.btn-ghost:hover{ border-color:var(--signal); color:var(--signal); transform:translateY(-2px); }

/* ============================== HERO ============================== */

.hero{ padding:180px 0 100px; border-bottom:1px solid var(--line); }

.hero-grid{
  display:grid; grid-template-columns:1.35fr .65fr; gap:56px; align-items:center;
}

.hero-eyebrow{
  font-family:var(--font-mono); font-size:13.5px; color:var(--muted);
}
.hero-eyebrow b{ color:var(--mint); font-weight:500; }

.hero h1{
  font-size:clamp(32px,4.6vw,52px);
  margin-top:16px;
  max-width:16ch;
}
.hero h1 .accent{ color:var(--signal); }

.hero p.lede{
  margin-top:22px; max-width:56ch; color:var(--muted); font-size:16.5px;
}

.hero-actions{ display:flex; gap:16px; margin-top:34px; flex-wrap:wrap; }

.hero-photo{
  position:relative; border-radius:20px; overflow:hidden;
  border:1px solid var(--line);
  transform:rotate(1.2deg);
  transition:transform .5s cubic-bezier(.4,0,.2,1);
}
.hero-photo:hover{ transform:rotate(0deg) scale(1.015); }
.hero-photo img{ width:100%; }
.hero-photo::after{
  content:''; position:absolute; inset:0;
  box-shadow:inset 0 0 0 1px rgba(255,178,56,0.15), inset 0 -60px 60px -20px rgba(10,15,28,0.65);
  pointer-events:none;
}

.stats{
  margin-top:76px; display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:14px; overflow:hidden;
}
.stat{
  background:var(--panel); padding:26px 22px; text-align:left;
  transition:background .3s ease, transform .3s ease;
}
.stat:hover{ background:var(--panel-2); transform:translateY(-4px); }
.stat .num{
  font-family:var(--font-display); font-size:30px; font-weight:600; color:var(--mint);
  transition:text-shadow .3s ease;
}
.stat:hover .num{ text-shadow:0 0 18px rgba(70,230,176,0.55); }
.stat .lbl{ margin-top:6px; font-size:13px; color:var(--muted); max-width:20ch; }

@media (max-width:860px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-photo{ max-width:280px; }
  .stats{ grid-template-columns:repeat(2,1fr); }
}

/* ============================== STACK ============================== */

.stack-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:14px; overflow:hidden;
}
.stack-card{ background:var(--panel); padding:28px; }
.stack-card h3{ font-size:16px; font-weight:600; }
.stack-card .chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:16px; }

.chip{
  font-family:var(--font-mono); font-size:12.5px; color:var(--muted);
  background:var(--panel-2); border:1px solid var(--line);
  padding:6px 11px; border-radius:6px;
  transition:transform .25s cubic-bezier(.4,0,.2,1), color .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.chip:hover{
  color:var(--signal); border-color:var(--signal-dim);
  transform:translateY(-3px) rotate(var(--tilt,-1.5deg));
  box-shadow:0 8px 18px -8px rgba(255,178,56,0.45);
}
.chip:nth-child(3n+1){ --tilt:-1.5deg; }
.chip:nth-child(3n+2){ --tilt:1.5deg; }
.chip:nth-child(3n){ --tilt:-2deg; }

@media (max-width:860px){ .stack-grid{ grid-template-columns:1fr; } }

/* ============================== EXPERIENCE ============================== */

.timeline{ position:relative; padding-left:34px; }
.timeline::before{
  content:''; position:absolute; left:5px; top:8px; bottom:8px; width:1px;
  background:linear-gradient(var(--signal), var(--line) 90%);
}

.tl-item{ position:relative; padding-bottom:8px; }
.tl-node{
  position:absolute; left:-34px; top:6px; width:11px; height:11px; border-radius:50%;
  background:var(--ink); border:2px solid var(--signal);
  transition:box-shadow .3s ease, transform .3s ease;
}
.tl-item:hover .tl-node{ box-shadow:0 0 0 6px rgba(255,178,56,0.16); transform:scale(1.15); }

.tl-head{ display:flex; flex-wrap:wrap; align-items:baseline; gap:10px 16px; }
.tl-role{ font-family:var(--font-display); font-size:20px; font-weight:600; }
.tl-date{ font-family:var(--font-mono); font-size:12.5px; color:var(--signal); }
.tl-org{ color:var(--muted); margin-top:4px; font-size:14.5px; }

.tl-bullets{ margin-top:20px; display:grid; gap:14px; }
.tl-bullets li{
  position:relative; padding-left:22px; color:var(--muted); font-size:15px;
  border-left:1px solid transparent; transition:border-color .3s ease, color .3s ease, padding-left .3s ease;
}
.tl-bullets li::before{
  content:''; position:absolute; left:0; top:9px; width:8px; height:1.5px; background:var(--muted-dim);
  transition:background .3s ease, width .3s ease;
}
.tl-bullets li:hover{ color:var(--text); padding-left:26px; }
.tl-bullets li:hover::before{ background:var(--mint); width:12px; }

/* ============================== PROJECTS ============================== */

.projects-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }

.project-card{
  position:relative; background:var(--panel); border:1px solid var(--line);
  border-radius:14px; padding:28px; overflow:hidden;
  transition:transform .4s cubic-bezier(.4,0,.2,1), box-shadow .4s ease, border-color .4s ease;
}
.project-card::before{
  content:''; position:absolute; top:0; left:0; height:3px; width:0;
  background:linear-gradient(90deg, var(--signal), var(--mint));
  transition:width .45s cubic-bezier(.4,0,.2,1);
}
.project-card:hover{
  transform:translateY(-7px); border-color:var(--signal-dim);
  box-shadow:0 22px 40px -20px rgba(0,0,0,0.55);
}
.project-card:hover::before{ width:100%; }

.project-card h3{ font-size:18.5px; font-weight:600; max-width:34ch; }
.project-card p{ margin-top:12px; color:var(--muted); font-size:14.5px; }

.tag-row{ display:flex; flex-wrap:wrap; gap:7px; margin-top:20px; }
.tag{
  font-family:var(--font-mono); font-size:11.5px; color:var(--muted-dim);
  border:1px solid var(--line); padding:4px 9px; border-radius:5px;
  transition:transform .3s ease, color .3s ease, border-color .3s ease;
  transition-delay:calc(var(--i,0) * 25ms);
}
.project-card:hover .tag{ color:var(--text); border-color:var(--line); transform:translateY(-2px); }

@media (max-width:860px){ .projects-grid{ grid-template-columns:1fr; } }

/* ============================== EDUCATION ============================== */

.edu-grid{ display:grid; grid-template-columns:1.3fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); border-radius:14px; overflow:hidden; }
.edu-card{ background:var(--panel); padding:30px; }
.edu-card h3{ font-size:15px; color:var(--muted); font-weight:500; margin-bottom:16px; font-family:var(--font-body); }
.edu-degree{ font-family:var(--font-display); font-size:19px; font-weight:600; }
.edu-meta{ color:var(--muted); font-size:14px; margin-top:8px; }
.edu-score{ font-family:var(--font-mono); color:var(--mint); font-size:13px; margin-top:10px; }

.cert-list{ display:grid; gap:14px; }
.cert-list li{
  display:flex; justify-content:space-between; gap:12px; font-size:14.5px;
  padding-bottom:14px; border-bottom:1px solid var(--line);
  transition:padding-left .3s ease;
}
.cert-list li:last-child{ border-bottom:none; padding-bottom:0; }
.cert-list li:hover{ padding-left:6px; color:var(--signal); }
.cert-list .src{ color:var(--muted-dim); font-family:var(--font-mono); font-size:12px; white-space:nowrap; }

@media (max-width:860px){ .edu-grid{ grid-template-columns:1fr; } }

/* ============================== CONTACT ============================== */

.contact-grid{ display:grid; grid-template-columns:.85fr 1.15fr; gap:56px; }

.contact-links{ display:grid; gap:12px; margin-top:28px; }

.c-link{
  display:flex; align-items:center; gap:14px;
  padding:14px 16px; border:1px solid var(--line); border-radius:10px;
  font-size:14.5px; color:var(--text);
  transition:transform .3s cubic-bezier(.4,0,.2,1), border-color .3s ease, background .3s ease;
}
.c-link .ic{
  width:34px; height:34px; border-radius:8px; background:var(--panel-2);
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
  transition:transform .35s cubic-bezier(.34,1.56,.64,1), background .3s ease;
}
.c-link .ic svg{ width:16px; height:16px; stroke:var(--muted); transition:stroke .3s ease; }

.c-link:nth-child(1):hover{ transform:translateX(6px); border-color:var(--signal-dim); }
.c-link:nth-child(1):hover .ic{ background:var(--signal); transform:rotate(-8deg); }

.c-link:nth-child(2):hover{ transform:translateX(6px); border-color:var(--mint); }
.c-link:nth-child(2):hover .ic{ background:var(--mint); transform:scale(1.15); }

.c-link:nth-child(3):hover{ transform:translateX(6px); border-color:#8a8a8a; }
.c-link:nth-child(3):hover .ic{ background:var(--text); transform:rotate(360deg); }

.c-link:nth-child(4):hover{ transform:translateX(6px); border-color:var(--signal-dim); }
.c-link:nth-child(4):hover .ic{ animation:ring 0.5s ease; }

.c-link:hover .ic svg{ stroke:var(--ink); }

@keyframes ring{
  0%,100%{ transform:rotate(0); } 20%{ transform:rotate(-18deg); } 40%{ transform:rotate(16deg); }
  60%{ transform:rotate(-10deg); } 80%{ transform:rotate(6deg); }
}

.field{ margin-bottom:18px; }
.field label{ display:block; font-size:13px; color:var(--muted); margin-bottom:8px; font-family:var(--font-mono); }
.field input, .field textarea{
  width:100%; background:var(--panel); border:1px solid var(--line); border-radius:9px;
  padding:13px 14px; color:var(--text); font-family:var(--font-body); font-size:14.5px;
  transition:border-color .3s ease, box-shadow .3s ease;
}
.field input:focus, .field textarea:focus{
  outline:none; border-color:var(--signal); box-shadow:0 0 0 3px rgba(255,178,56,0.12);
}
.field textarea{ min-height:130px; resize:vertical; }

.form-status{
  margin-top:16px; font-family:var(--font-mono); font-size:13px; min-height:18px;
}
.form-status.ok{ color:var(--mint); }
.form-status.err{ color:#ff6b6b; }

@media (max-width:860px){ .contact-grid{ grid-template-columns:1fr; } }

/* ============================== FOOTER ============================== */

footer{
  padding:36px 0; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  color:var(--muted-dim); font-size:13px;
}