/* Triciti Vigyapan — shared site theme */

:root {
  --bg: #0b1120;
  --bg-2: #0a0f1e;
  --card: rgba(17, 25, 44, 0.55);
  --card-solid: #101827;
  --text: #f8fafc;
  --muted: #9aa8bd;
  --subtle: #64748b;
  --blue: #2563eb;
  --purple: #a855f7;
  --accent: #f97316;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --grad: linear-gradient(120deg, #2563eb 0%, #a855f7 48%, #f97316 100%);
  --grad-soft: linear-gradient(120deg, rgba(37, 99, 235, 0.18), rgba(168, 85, 247, 0.14), rgba(249, 115, 22, 0.16));
  --radius: 20px;
  --radius-sm: 12px;
  --display: "Sora", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --max: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 88px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.aura {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(600px circle at var(--mx, 50%) var(--my, 20%), rgba(168, 85, 247, 0.10), transparent 60%),
    radial-gradient(900px circle at 80% 0%, rgba(37, 99, 235, 0.12), transparent 55%),
    radial-gradient(700px circle at 10% 90%, rgba(249, 115, 22, 0.10), transparent 55%);
  transition: background 0.2s ease-out;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }

.container { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; position: relative; z-index: 1; }

.progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px; width: 0%;
  background: var(--grad);
  z-index: 100;
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.6);
}

.hdr {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  transition: background 0.3s var(--ease), border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}

.hdr.stuck {
  background: rgba(11, 17, 32, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.hdr-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0;
}

.brand { display: flex; align-items: center; gap: 0.9rem; }
.brand-logo { height: 64px; width: auto; background: #fff; border-radius: 12px; padding: 5px 10px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.05; font-family: var(--display); font-weight: 500; }
.brand-name .l1 { font-size: 1.5rem; letter-spacing: 0.01em; }
.brand-name .l2 {
  font-size: 1.5rem;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a { color: var(--muted); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav a:hover, .nav a.is-active { color: var(--text); }
.nav a.btn-primary { color: #fff; font-weight: 600; }
.nav a.btn-primary:hover { color: #fff; }
.nav a.btn-ghost { color: var(--text); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border-strong); border-radius: 10px; padding: 0.5rem 0.8rem; cursor: pointer; color: var(--text); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-weight: 600; font-size: 0.92rem; padding: 0.8rem 1.5rem;
  border-radius: 999px; cursor: pointer; border: none;
  transition: transform 0.2s var(--ease), box-shadow 0.3s, background 0.3s, border-color 0.3s;
  white-space: nowrap;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 10px 28px -10px rgba(0, 0, 0, 0.35), 0 4px 14px -4px rgba(124, 58, 237, 0.28);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -10px rgba(0, 0, 0, 0.4), 0 6px 18px -6px rgba(249, 115, 22, 0.32);
}
.btn-ghost { border: 1px solid var(--border-strong); background: rgba(255, 255, 255, 0.03); color: var(--text); }
.btn-ghost:hover { border-color: var(--purple); background: rgba(168, 85, 247, 0.08); transform: translateY(-2px); }
.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.85rem; }

.eyebrow {
  display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.8rem;
}

.h2 {
  font-family: var(--display); font-weight: 800; letter-spacing: -0.02em;
  font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.1; margin: 0 0 0.9rem;
}

.lead { color: var(--muted); font-size: 1.05rem; max-width: 42rem; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.socials { display: flex; gap: 0.7rem; margin-top: 1.4rem; }
.socials a {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  border: 1px solid var(--border-strong); color: var(--muted); transition: 0.25s;
}
.socials a:hover { color: var(--accent); border-color: var(--accent); background: rgba(249, 115, 22, 0.12); transform: translateY(-3px); }

footer.ft { border-top: 1px solid var(--border); padding: 3rem 0 2.5rem; margin-top: 4rem; }
.ft-inner { display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: center; justify-content: space-between; }
.ft-tag { font-family: var(--display); color: var(--accent); margin: 0.6rem 0 0; }
.ft-nav { display: flex; gap: 1.4rem; flex-wrap: wrap; }
.ft-nav a { color: var(--muted); font-size: 0.88rem; }
.ft-nav a:hover { color: var(--text); }
.ft-copy { color: var(--subtle); font-size: 0.82rem; width: 100%; margin-top: 0.5rem; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}

@media (max-width: 900px) {
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    background: rgba(11, 17, 32, 0.97); border-bottom: 1px solid var(--border);
  }
  .nav.open { display: flex; }
  .nav a { padding: 0.8rem 0; border-bottom: 1px solid var(--border); }
  .nav .btn { margin-top: 0.6rem; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 520px) {
  .brand-logo { height: 52px; }
  .brand-name .l1, .brand-name .l2 { font-size: 1.22rem; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}