/* ==========================================================================
   IRSPL — Intellique Research School Private Limited
   Shared design system: navy / teal / amber
   ========================================================================== */

:root {
  --navy: #0b1f3a;
  --navy-deep: #061527;
  --navy-soft: #13294f;
  --teal: #0e7c86;
  --teal-light: #12a5b3;
  --amber: #d98e2b;
  --amber-light: #f0ad4e;
  --paper: #f7f8fa;
  --paper-raised: #ffffff;
  --ink: #101720;
  --ink-soft: #4a5a6a;
  --ink-faint: #7d8b98;
  --line: #e1e6eb;
  --shadow: 0 2px 8px rgba(11, 31, 58, 0.06), 0 12px 32px rgba(11, 31, 58, 0.08);
  --radius: 12px;
  --font-serif: "Source Serif 4", Georgia, serif;
  --font-sans: "Inter", -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 0.5em;
  font-weight: 600;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-light); }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 72px 0; }
section.tight { padding: 48px 0; }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
  display: inline-block;
}

.section-head { max-width: 680px; margin: 0 0 40px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary { background: var(--amber); color: var(--navy-deep); }
.btn-primary:hover { background: var(--amber-light); color: var(--navy-deep); }

.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-light); color: #fff; }

.btn-outline { background: transparent; border-color: rgba(255,255,255,0.5); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); color: #fff; }

.btn-outline-navy { background: transparent; border-color: var(--navy); color: var(--navy); }
.btn-outline-navy:hover { background: var(--navy); color: #fff; }

/* ---------- Header / Nav ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
}
.brand .mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--teal) 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.brand .full { display: flex; flex-direction: column; line-height: 1.15; }
.brand .full small {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.65rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
}

nav.primary-nav { display: flex; align-items: center; gap: 30px; }
nav.primary-nav a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.94rem;
}
nav.primary-nav a:hover, nav.primary-nav a.active { color: var(--navy); }
nav.primary-nav a.active { font-weight: 700; }

.nav-cta { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--navy);
  margin: 5px 0;
  transition: 0.2s;
}

@media (max-width: 880px) {
  nav.primary-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper-raised);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    display: none;
  }
  nav.primary-nav.open { display: flex; }
  nav.primary-nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
  .nav-cta .btn span.long { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(circle at 15% 20%, var(--navy-soft), var(--navy-deep) 65%);
  color: #fff;
  padding: 96px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 30%, rgba(14,124,134,0.35), transparent 55%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero .eyebrow { color: var(--amber-light); }
.hero h1 { color: #fff; max-width: 780px; }
.hero .lede { color: rgba(255,255,255,0.82); font-size: 1.12rem; max-width: 640px; margin-bottom: 36px; }

.page-hero {
  background: linear-gradient(135deg, var(--navy-deep), var(--navy-soft));
  color: #fff;
  padding: 76px 0 64px;
}
.page-hero .eyebrow { color: var(--amber-light); }
.page-hero h1 { color: #fff; max-width: 760px; }
.page-hero .lede { color: rgba(255,255,255,0.82); font-size: 1.08rem; max-width: 640px; margin: 0; }

/* ---------- Stats ---------- */
.stats-bar {
  background: var(--navy-deep);
  padding: 0 0 56px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  background: var(--paper-raised);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 24px;
  transform: translateY(-40px);
  margin: 0;
}
.stat { text-align: center; }
.stat .num {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--teal);
}
.stat .label { color: var(--ink-faint); font-size: 0.9rem; margin-top: 4px; }

@media (max-width: 640px) {
  .stats-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ---------- About summary ---------- */
.about-summary { text-align: center; }
.about-summary p { max-width: 720px; margin-left: auto; margin-right: auto; font-size: 1.05rem; }

/* ---------- Pillars ---------- */
.pillars-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.pillar-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.pillar-card .icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: #fff;
}
.pillar-card.research .icon { background: var(--navy); }
.pillar-card.ai .icon { background: var(--teal); }
.pillar-card p { flex-grow: 1; }
.pillar-card .btn { align-self: flex-start; margin-top: 8px; }

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

/* ---------- Updates ---------- */
.updates-list { display: grid; gap: 18px; }
.update-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 26px;
}
.update-item .date { color: var(--ink-faint); font-size: 0.85rem; font-weight: 600; }
.update-item .tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(14,124,134,0.1);
  color: var(--teal);
  margin-bottom: 8px;
}
.update-item h3 { margin-bottom: 4px; font-size: 1.05rem; }
@media (max-width: 600px) {
  .update-item { grid-template-columns: 1fr; }
}

/* ---------- Trust partners ---------- */
.partners-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.partner-chip {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--teal) 0%, var(--navy) 100%);
  color: #fff;
  text-align: center;
  border-radius: var(--radius);
  padding: 56px 32px;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 28px; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info .item { margin-bottom: 22px; }
.contact-info .item .k {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  font-weight: 700;
  margin-bottom: 4px;
}
.contact-info .item .v { font-size: 1.02rem; color: var(--navy); font-weight: 600; }

form.contact-form {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
}
form.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}
form.contact-form input,
form.contact-form textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--paper);
}
form.contact-form input:focus,
form.contact-form textarea:focus {
  outline: none;
  border-color: var(--teal);
}
form.contact-form .status { font-size: 0.85rem; color: var(--teal); min-height: 1.2em; }

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

/* ---------- Generic content blocks (about/leadership/services) ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
@media (max-width: 780px) { .two-col { grid-template-columns: 1fr; } }

.card-block {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}

.leader-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  margin-bottom: 28px;
}
.leader-card .photo {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
}
.leader-card .role {
  color: var(--amber);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  display: block;
}
.leader-card ul { margin: 12px 0 0; padding-left: 20px; color: var(--ink-soft); }
.leader-card li { margin-bottom: 6px; }

@media (max-width: 700px) {
  .leader-card { grid-template-columns: 1fr; }
  .leader-card .photo { max-width: 140px; }
}

.service-list { display: grid; gap: 16px; margin-top: 20px; }
.service-list .row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
}
.service-list .row .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
  margin-top: 8px;
  flex-shrink: 0;
}
.service-list .row strong { color: var(--navy); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 700px) { .feature-grid { grid-template-columns: 1fr; } }
.feature-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.feature-card .icon {
  width: 40px; height: 40px;
  border-radius: 9px;
  background: rgba(14,124,134,0.1);
  color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  font-weight: 700;
}

.product-strip {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.product-pill {
  background: rgba(217,142,43,0.12);
  color: var(--amber);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 700;
}

/* ---------- Footer ---------- */
footer.site-footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.75);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-grid h4 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.footer-grid a { color: rgba(255,255,255,0.7); display: block; margin-bottom: 10px; font-size: 0.92rem; }
.footer-grid a:hover { color: #fff; }
.footer-brand .brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.9rem; max-width: 320px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}
@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; }
}