/* Saichand Gourishetti — Professional Consulting Site
   Design goals: technical authority, clarity, accessibility, performance.
*/

:root{
  --bg: #0b0f14;
  --bg-elev: #0f1620;
  --surface: rgba(255,255,255,0.04);
  --surface-2: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.10);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --muted-2: rgba(255,255,255,0.55);
  --accent: #00d9ff;
  --accent-2: #7c5cff; /* subtle secondary */
  --success: #10b981;
  --danger: #ef4444;

  --shadow: 0 10px 35px rgba(0,0,0,0.45);
  --radius: 18px;
  --radius-sm: 14px;

  --maxw: 1120px;
  --pad: clamp(18px, 3vw, 28px);
  --gap: clamp(14px, 2.2vw, 22px);

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation:none !important; transition:none !important; }
}

body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% -10%, rgba(0,217,255,0.16), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(124,92,255,0.12), transparent 60%),
              var(--bg);
  line-height:1.6;
}

a{ color: inherit; text-underline-offset: 3px; }
a:hover{ color: var(--accent); }
img{ max-width:100%; display:block; }

.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left: var(--pad);
  top: var(--pad);
  width:auto; height:auto;
  padding: 10px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  z-index: 9999;
}

.container{
  width: min(var(--maxw), calc(100% - 2*var(--pad)));
  margin-inline:auto;
}

header.site-header{
  position: sticky;
  top:0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(11,15,20,0.72);
  border-bottom: 1px solid var(--border);
}

.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand{
  display:flex; align-items:center; gap: 12px;
  text-decoration:none;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand img{
  width:34px; height:34px;
  border-radius: 10px;
  box-shadow: 0 0 0 1px var(--border);
}
.brand span{ display:flex; flex-direction:column; line-height:1.1; }
.brand small{ font-weight: 500; color: var(--muted); letter-spacing: 0.1px; }

.nav-links{
  display:flex;
  gap: 18px;
  align-items:center;
}
.nav-links a{
  text-decoration:none;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 10px;
  border-radius: 12px;
}
.nav-links a[aria-current="page"],
.nav-links a.active{
  color: var(--text);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 0 0 1px var(--border);
}

.actions{
  display:flex; gap: 10px; align-items:center;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  text-decoration:none;
  font-weight: 700;
  color: var(--text);
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}
.btn:hover{ border-color: rgba(0,217,255,0.45); background: rgba(0,217,255,0.08); }
.btn.primary{
  border-color: rgba(0,217,255,0.55);
  background: linear-gradient(180deg, rgba(0,217,255,0.18), rgba(0,217,255,0.08));
}
.btn.primary:hover{ background: linear-gradient(180deg, rgba(0,217,255,0.24), rgba(0,217,255,0.10)); }
.btn.ghost{
  background: transparent;
  box-shadow: none;
}
.btn.ghost:hover{ background: rgba(255,255,255,0.06); }

.icon-btn{
  display:none;
  border:1px solid var(--border);
  background: rgba(255,255,255,0.04);
  padding: 10px 12px;
  border-radius: 14px;
  color: var(--text);
}

.hero{
  padding: clamp(42px, 6vw, 74px) 0 36px 0;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(18px, 4vw, 40px);
  align-items:center;
}
.kicker{
  display:inline-flex; gap: 10px; align-items:center;
  padding: 8px 12px;
  border:1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-weight: 700;
  width: fit-content;
}
.kicker code{
  font-family: var(--mono);
  font-size: 0.82rem;
  color: rgba(0,217,255,0.9);
}
h1{
  font-size: clamp(2.0rem, 4vw, 3.1rem);
  line-height: 1.15;
  margin: 14px 0 10px 0;
  letter-spacing: -0.02em;
}
.hero p{
  color: var(--muted);
  font-size: clamp(1.05rem, 1.6vw, 1.15rem);
  margin: 0 0 18px 0;
  max-width: 60ch;
}
.hero-cta{
  display:flex; flex-wrap:wrap; gap: 12px;
  margin-top: 14px;
}
.hero-meta{
  margin-top: 20px;
  display:flex; flex-wrap:wrap;
  gap: 10px;
  color: var(--muted-2);
  font-weight: 600;
}
.badge{
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
}

.hero-media{
  border-radius: var(--radius);
  overflow:hidden;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(0,217,255,0.06), rgba(124,92,255,0.04));
  box-shadow: var(--shadow);
}
.hero-media img{
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  object-position: center;
}
.hero-media figcaption{
  padding: 12px 14px;
  color: var(--muted-2);
  font-size: 0.88rem;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.18);
}

.section{
  padding: 54px 0;
}
.section-header{
  display:flex; flex-direction:column; gap: 10px;
  margin-bottom: 20px;
}
.section-header h2{
  margin:0;
  font-size: clamp(1.55rem, 2.6vw, 2.15rem);
  letter-spacing: -0.01em;
}
.section-header p{
  margin:0;
  color: var(--muted);
  max-width: 78ch;
}

.grid{
  display:grid;
  gap: var(--gap);
}
.grid.cols-2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 10px 26px rgba(0,0,0,0.28);
}
.card h3{
  margin: 2px 0 8px 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.card p{
  margin: 0 0 10px 0;
  color: var(--muted);
}
.card ul{
  margin: 10px 0 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.card li{ margin: 6px 0; }

.card .meta{
  margin-top: 12px;
  display:flex; flex-wrap:wrap; gap: 8px;
}
.tag{
  font-size: 0.85rem;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-weight: 650;
}

.media-card{
  overflow:hidden;
  padding: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.media-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}
.media-card picture{
  display: block;
  position: relative;
  background: linear-gradient(135deg, rgba(0,217,255,0.08), rgba(124,92,255,0.06));
}
.media-card picture::after{
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.15));
  pointer-events: none;
}
.media-card img{
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center;
  opacity: 0.92;
  transition: opacity 0.2s ease;
}
.media-card:hover img{
  opacity: 1;
}
.media-card .body{
  padding: 18px 20px 20px 20px;
}
.media-card .body p{ margin-bottom: 12px; }

.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items:start;
}

.callout{
  border: 1px solid rgba(0,217,255,0.32);
  background: linear-gradient(180deg, rgba(0,217,255,0.10), rgba(255,255,255,0.03));
  border-radius: var(--radius);
  padding: 18px;
}
.callout p{ color: var(--muted); margin: 0; }
.callout strong{ color: var(--text); }

.divider{
  height:1px;
  background: var(--border);
  margin: 22px 0;
}

.publication{
  display:flex;
  flex-direction:column;
  gap: 6px;
}
.publication .title{
  font-weight: 800;
}
.publication .authors, .publication .venue{
  color: var(--muted);
  font-size: 0.97rem;
}
.publication .links{
  display:flex; flex-wrap:wrap; gap: 10px;
}
.link{
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}
.link:hover{ text-decoration: underline; }

.form{
  display:grid;
  gap: 12px;
}
.field{
  display:grid;
  gap: 8px;
}
label{
  font-weight: 750;
  color: rgba(255,255,255,0.86);
}
input, textarea, select{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  outline: none;
}
textarea{ min-height: 120px; resize: vertical; }
input:focus, textarea:focus, select:focus{
  border-color: rgba(0,217,255,0.6);
  box-shadow: 0 0 0 3px rgba(0,217,255,0.14);
}
.help{
  color: var(--muted-2);
  font-size: 0.92rem;
}
.form-actions{
  display:flex; flex-wrap:wrap; gap: 10px; align-items:center;
}

footer{
  padding: 34px 0 40px 0;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.12);
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--gap);
}
.footer-links{
  display:flex; flex-wrap:wrap; gap: 12px 16px;
  align-items:center;
}
.footer-links a{
  color: var(--muted);
  text-decoration:none;
  font-weight: 700;
}
.footer-links a:hover{ color: var(--accent); }
.small{
  color: var(--muted-2);
  font-size: 0.92rem;
}

.cookie-banner{
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 2000;
  display:none;
}
.cookie-inner{
  max-width: min(var(--maxw), calc(100% - 32px));
  margin-inline:auto;
  border:1px solid var(--border);
  background: rgba(11,15,20,0.88);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 14px 14px;
  box-shadow: var(--shadow);
  display:flex;
  gap: 14px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
}
.cookie-inner p{
  margin:0;
  color: var(--muted);
  max-width: 80ch;
  font-size: 0.95rem;
}
.cookie-actions{
  display:flex; gap: 10px; flex-wrap:wrap;
}

@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-media img{ max-height: 280px; }
  .grid.cols-3{ grid-template-columns: 1fr; }
  .grid.cols-2{ grid-template-columns: 1fr; }
  .media-card img{ height: 180px; }
  .split{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .nav-links{ display:none; }
  .icon-btn{ display:inline-flex; }
  .nav-links.open{
    display:flex;
    position:absolute;
    left: var(--pad);
    right: var(--pad);
    top: 64px;
    flex-direction:column;
    padding: 12px;
    border:1px solid var(--border);
    border-radius: 16px;
    background: rgba(11,15,20,0.96);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
  }
  .nav-links.open a{ width:100%; }
}

.sr-only{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }