/* =========================================================
   Dr. Amrendra Kumar — shared stylesheet
   Design system modelled on nalinbharti.in:
   light ground, navy type, gold accent, serif display face,
   generous whitespace, pill buttons, hairline rules.
   ========================================================= */

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

:root{
  --navy:        #0f1f38;
  --navy-soft:   #4a5872;
  --ink-muted:   #5b6472;
  --gold:        #c9992e;
  --gold-dark:   #a97f21;
  --line:        #e7e3da;
  --paper:       #ffffff;
  --paper-tint:  #f7f5f0;
  --radius:      10px;
  --shadow:      0 10px 30px rgba(15,31,56,0.08);
  --container:   1180px;
}

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

html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family:'Inter', sans-serif;
  color:var(--navy);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-size:16px;
  line-height:1.6;
}

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

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

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

h1,h2,h3,h4{
  font-family:'Playfair Display', serif;
  color:var(--navy);
  line-height:1.18;
  margin:0 0 0.6em 0;
  font-weight:600;
}

h1{ font-size:clamp(2.3rem, 4vw, 3.4rem); }
h2{ font-size:clamp(1.6rem, 2.6vw, 2.2rem); }
h3{ font-size:1.25rem; }

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

.eyebrow{
  display:inline-block;
  font-size:0.72rem;
  font-weight:700;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--gold-dark);
  margin-bottom:0.9rem;
}

.section{ padding:5.5rem 0; }
.section.tint{ background:var(--paper-tint); }
.section-head{ max-width:640px; margin:0 0 3rem 0; }
.section-head p{ margin:0; }

hr.rule{
  border:none;
  border-top:1px solid var(--line);
  margin:0;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  padding:0.9rem 1.85rem;
  border-radius:999px;
  font-weight:600;
  font-size:0.94rem;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
}
.btn-gold{ background:var(--gold); color:#1a1408; border-color:var(--gold); }
.btn-gold:hover{ background:var(--gold-dark); border-color:var(--gold-dark); transform:translateY(-1px); box-shadow:0 8px 18px rgba(201,153,46,.32); }
.btn-outline{ background:transparent; color:var(--navy); border-color:var(--navy); }
.btn-outline:hover{ background:var(--navy); color:#fff; transform:translateY(-1px); }
.btn-sm{ padding:0.6rem 1.3rem; font-size:0.85rem; }

/* ---------- Utility bar ---------- */
.utility-bar{
  background:var(--navy);
  color:#cfd6e4;
  font-size:0.82rem;
}
.utility-bar .wrap{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:0.55rem; padding-bottom:0.55rem; gap:1rem; flex-wrap:wrap;
}
.utility-bar a{ color:#e9ecf3; }
.utility-bar .u-contact{ display:flex; gap:1.4rem; flex-wrap:wrap; }
.utility-bar .u-social{ display:flex; gap:1rem; }
.utility-bar .u-social a{ opacity:.85; }
.utility-bar .u-social a:hover{ opacity:1; color:var(--gold); }

/* ---------- Header / nav ---------- */
header.site-header{
  border-bottom:1px solid var(--line);
  background:var(--paper);
  position:sticky; top:0; z-index:50;
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:1rem 0;
  gap:1.5rem;
}
.brand{ display:flex; align-items:center; gap:0.85rem; }
.brand .mark{
  width:48px; height:48px; border-radius:50%;
  background:var(--navy); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family:'Playfair Display', serif; font-weight:700; font-size:1.05rem;
  flex:none;
}
.brand .name{ font-family:'Playfair Display', serif; font-weight:700; font-size:1.12rem; color:var(--navy); }
.brand .role{ font-size:0.76rem; color:var(--ink-muted); }

nav.primary-nav{ display:flex; align-items:center; }
nav.primary-nav > ul{ display:flex; list-style:none; margin:0; padding:0; gap:2.1rem; }
nav.primary-nav > ul > li{ position:relative; }
nav.primary-nav > ul > li > a{
  font-weight:600; font-size:0.93rem; color:var(--navy);
  padding:0.4rem 0.1rem; display:inline-block;
  border-bottom:2px solid transparent;
}
nav.primary-nav > ul > li > a:hover,
nav.primary-nav > ul > li.active > a{ color:var(--gold-dark); border-color:var(--gold); }

nav.primary-nav .dropdown{
  position:absolute; top:100%; left:0;
  background:var(--paper); border:1px solid var(--line); border-radius:8px;
  min-width:220px; padding:0.5rem 0; box-shadow:var(--shadow);
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s ease;
}
nav.primary-nav > ul > li:hover .dropdown{ opacity:1; visibility:visible; transform:translateY(0); }
nav.primary-nav .dropdown a{
  display:block; padding:0.55rem 1.1rem; font-size:0.88rem; color:var(--navy-soft); font-weight:500;
}
nav.primary-nav .dropdown a:hover{ background:var(--paper-tint); color:var(--gold-dark); }

.nav-toggle{ display:none; }

/* ---------- Mobile nav toggle (checkbox hack, no JS) ---------- */
.nav-toggle-label{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:28px; height:28px;
  cursor:pointer;
  flex:none;
}
.nav-toggle-label span{
  display:block; height:2px; width:100%;
  background:var(--navy); border-radius:2px;
  transition:transform .2s ease, opacity .2s ease;
}
#nav-toggle:checked ~ .nav-toggle-label span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
#nav-toggle:checked ~ .nav-toggle-label span:nth-child(2){ opacity:0; }
#nav-toggle:checked ~ .nav-toggle-label span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ---------- Hero (home) ---------- */
.hero{ display:flex; min-height:600px; }
.hero-left{
  flex:0 0 46%; display:flex; flex-direction:column; justify-content:center;
  padding:4.5rem 3.5rem 4.5rem max(24px, calc((100vw - 1180px) / 2));
}
.hero-left .wrap-inner{ max-width:520px; }
.hero-left .subtitle{ font-size:1.02rem; max-width:32rem; }
.hero-left .tags{ display:flex; gap:0.55rem; flex-wrap:wrap; margin:1.4rem 0 1.8rem; }
.hero-left .tags span{
  font-size:0.76rem; font-weight:600; color:var(--navy-soft);
  border:1px solid var(--line); padding:0.35rem 0.85rem; border-radius:999px;
  background:var(--paper-tint);
}
.hero-left .lede{ font-style:italic; color:var(--navy-soft); }
.hero-buttons{ display:flex; gap:1rem; flex-wrap:wrap; }
.hero-right{
  flex:0 0 54%; position:relative; background:var(--paper-tint);
}
.hero-right img{ width:100%; height:100%; object-fit:cover; }

/* ---------- Stat strip ---------- */
.stat-strip{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--paper-tint); }
.stat-strip .wrap{ display:flex; padding:2.2rem 24px; }
.stat-strip .stat{ flex:1; text-align:center; border-right:1px solid var(--line); }
.stat-strip .stat:last-child{ border-right:none; }
.stat-strip .stat .num{ font-family:'Playfair Display', serif; font-size:2.1rem; font-weight:700; color:var(--navy); }
.stat-strip .stat .label{ font-size:0.82rem; color:var(--ink-muted); margin-top:0.2rem; }

/* ---------- Cards ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3, 1fr); gap:1.8rem; }
.grid-2{ display:grid; grid-template-columns:repeat(2, 1fr); gap:1.8rem; }

.card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:2rem; transition:box-shadow .15s ease, transform .15s ease;
}
.card:hover{ box-shadow:var(--shadow); transform:translateY(-3px); }
.card .icon{
  width:46px; height:46px; border-radius:10px; background:var(--paper-tint);
  color:var(--gold-dark); display:flex; align-items:center; justify-content:center;
  font-size:1.25rem; margin-bottom:1.1rem;
}
.card a.more{ font-weight:600; font-size:0.88rem; color:var(--gold-dark); }

/* ---------- Publication / timeline items ---------- */
.pub-item{
  padding:1.6rem 0; border-bottom:1px solid var(--line);
  display:grid; grid-template-columns:120px 1fr; gap:1.4rem;
}
.pub-item:first-child{ padding-top:0; }
.pub-tag{
  font-size:0.72rem; font-weight:700; letter-spacing:0.05em; text-transform:uppercase;
  color:var(--gold-dark); background:var(--paper-tint); border-radius:999px;
  padding:0.3rem 0.7rem; height:fit-content; text-align:center;
}
.pub-item h3{ font-size:1.08rem; margin-bottom:0.35rem; font-family:'Inter',sans-serif; font-weight:700; }
.pub-meta{ font-size:0.9rem; color:var(--ink-muted); margin-bottom:0.3rem; }
.pub-meta strong{ color:var(--navy); font-weight:600; }
.pub-note{ font-size:0.87rem; color:var(--ink-muted); margin:0.2rem 0 0; }
.pub-links a{ font-size:0.83rem; font-weight:600; color:var(--gold-dark); margin-right:1rem; }

.filter-row{ display:flex; gap:0.6rem; flex-wrap:wrap; margin-bottom:2.2rem; }
.filter-row a{
  font-size:0.83rem; font-weight:600; padding:0.5rem 1.1rem; border-radius:999px;
  border:1px solid var(--line); color:var(--navy-soft);
}
.filter-row a.active, .filter-row a:hover{ background:var(--navy); color:#fff; border-color:var(--navy); }

/* ---------- News / timeline ---------- */
.news-item{ display:grid; grid-template-columns:80px 1fr; gap:1.6rem; padding:1.7rem 0; border-bottom:1px solid var(--line); }
.news-date{ text-align:center; }
.news-date .d{ font-family:'Playfair Display', serif; font-size:1.7rem; font-weight:700; color:var(--navy); line-height:1; }
.news-date .my{ font-size:0.78rem; color:var(--ink-muted); text-transform:uppercase; letter-spacing:.04em; }
.news-tag{ font-size:0.74rem; font-weight:700; color:var(--gold-dark); text-transform:uppercase; letter-spacing:.05em; margin-bottom:0.3rem; display:block; }

/* ---------- Timeline (about: education / positions) ---------- */
.timeline{ border-left:2px solid var(--line); padding-left:2rem; }
.timeline-item{ position:relative; padding-bottom:2.2rem; }
.timeline-item:last-child{ padding-bottom:0; }
.timeline-item::before{
  content:''; position:absolute; left:-2.45rem; top:0.3rem;
  width:11px; height:11px; border-radius:50%; background:var(--gold); border:2px solid var(--paper);
  box-shadow:0 0 0 2px var(--gold);
}
.timeline-item .when{ font-size:0.82rem; color:var(--gold-dark); font-weight:700; letter-spacing:.03em; }
.timeline-item h3{ margin:0.25rem 0 0.15rem; font-size:1.05rem; }
.timeline-item .where{ font-size:0.9rem; color:var(--ink-muted); }

/* ---------- Sidebar (about / contact pages) ---------- */
.side-card{
  background:var(--paper-tint); border:1px solid var(--line); border-radius:var(--radius);
  padding:2rem; text-align:center;
}
.side-card .mark-lg{
  width:88px; height:88px; border-radius:50%; background:var(--navy); color:#fff;
  display:flex; align-items:center; justify-content:center; margin:0 auto 1.2rem;
  font-family:'Playfair Display', serif; font-size:1.8rem; font-weight:700;
}
.side-card h3{ font-size:1.15rem; margin-bottom:0.2rem; }
.side-card .role{ font-size:0.85rem; color:var(--ink-muted); margin-bottom:1.4rem; }
.side-card .info{ text-align:left; font-size:0.88rem; border-top:1px solid var(--line); padding-top:1.2rem; margin-top:1.2rem; }
.side-card .info div{ margin-bottom:0.7rem; color:var(--navy-soft); }
.side-card .info strong{ display:block; color:var(--navy); font-size:0.78rem; text-transform:uppercase; letter-spacing:.04em; margin-bottom:0.15rem; }
.side-card .socials{ display:flex; justify-content:center; gap:0.8rem; margin-top:1.3rem; flex-wrap:wrap; }
.side-card .socials a{
  font-size:0.78rem; font-weight:600; color:var(--navy-soft); border:1px solid var(--line);
  border-radius:999px; padding:0.35rem 0.85rem;
}
.side-card .socials a:hover{ background:var(--navy); color:#fff; border-color:var(--navy); }

.two-col{ display:grid; grid-template-columns:1fr 320px; gap:3rem; align-items:start; }

/* ---------- Breadcrumb / page header ---------- */
.page-head{ background:var(--paper-tint); padding:3.2rem 0 3rem; border-bottom:1px solid var(--line); }
.breadcrumb{ font-size:0.82rem; color:var(--ink-muted); margin-bottom:0.9rem; }
.breadcrumb a{ color:var(--gold-dark); font-weight:600; }
.page-head h1{ margin-bottom:0.5rem; }
.page-head .tagline{ color:var(--navy-soft); font-weight:500; margin:0; }

/* ---------- Form ---------- */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:1.2rem; }
.form-grid .full{ grid-column:1 / -1; }
label{ display:block; font-size:0.82rem; font-weight:600; color:var(--navy); margin-bottom:0.4rem; }
input, textarea{
  width:100%; padding:0.85rem 1rem; border:1px solid var(--line); border-radius:8px;
  font-family:'Inter', sans-serif; font-size:0.95rem; color:var(--navy); background:#fff;
}
input:focus, textarea:focus{ outline:2px solid var(--gold); outline-offset:1px; border-color:var(--gold); }
textarea{ resize:vertical; min-height:140px; }

.map-frame{ border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; margin-top:1.6rem; }
.map-frame iframe{ width:100%; height:280px; border:0; display:block; }

/* ---------- Footer ---------- */
footer.site-footer{ background:var(--navy); color:#c9d1e0; padding:4.5rem 0 0; }
.footer-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr; gap:3rem; padding-bottom:3rem; }
.footer-grid h4{ color:#fff; font-family:'Inter',sans-serif; font-size:0.95rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:1.2rem; }
.footer-grid p{ color:#aab4c8; font-size:0.9rem; }
.footer-brand{ font-family:'Playfair Display', serif; font-size:1.3rem; color:#fff; margin-bottom:0.8rem; font-weight:700; }
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid ul li{ margin-bottom:0.7rem; }
.footer-grid ul a{ color:#c9d1e0; font-size:0.9rem; }
.footer-grid ul a:hover{ color:var(--gold); }
.footer-social{ display:flex; gap:0.7rem; flex-wrap:wrap; margin-top:1.2rem; }
.footer-social a{
  border:1px solid #2b3c5c; border-radius:999px; padding:0.4rem 0.95rem; font-size:0.8rem; color:#c9d1e0;
}
.footer-social a:hover{ border-color:var(--gold); color:var(--gold); }
.footer-bottom{
  border-top:1px solid #24314c; padding:1.4rem 0; text-align:center; font-size:0.82rem; color:#8794ac;
}
.footer-bottom a{ color:#8794ac; }

/* ---------- Responsive ---------- */

/* Tablet and below: collapse nav into a toggled panel, stack hero */
@media (max-width: 980px){
  .wrap{ padding:0 20px; }

  .utility-bar .wrap{ justify-content:center; text-align:center; }
  .u-social{ display:none; }

  .nav-row{ position:relative; flex-wrap:wrap; }
  .brand .role{ display:none; }
  .nav-toggle-label{ display:flex; }

  nav.primary-nav{
    display:block;
    position:absolute;
    top:100%; left:0; right:0;
    width:100%;
    background:var(--paper);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
    z-index:60;
  }
  #nav-toggle:checked ~ nav.primary-nav{ max-height:80vh; overflow-y:auto; }

  nav.primary-nav > ul{ flex-direction:column; gap:0; padding:0.4rem 20px 1.4rem; }
  nav.primary-nav > ul > li{ border-bottom:1px solid var(--line); }
  nav.primary-nav > ul > li:last-child{ border-bottom:none; }
  nav.primary-nav > ul > li > a{ display:block; padding:0.95rem 0; border-bottom:none; }
  nav.primary-nav > ul > li.active > a{ color:var(--gold-dark); }

  nav.primary-nav .dropdown{
    position:static; opacity:1; visibility:visible; transform:none;
    box-shadow:none; border:none; border-radius:0; min-width:0;
    padding:0 0 0.6rem 1rem; margin:0;
  }
  nav.primary-nav .dropdown a{ padding:0.5rem 0; }

  .hero{ flex-direction:column; min-height:auto; }
  .hero-left, .hero-right{ flex:1 1 100%; }
  .hero-right{ height:70vw; order:-1; }
  .hero-left{ padding:2.8rem 20px; }

  .grid-3, .grid-2{ grid-template-columns:1fr; }

  .stat-strip .wrap{ flex-wrap:wrap; gap:1.2rem; padding:1.8rem 20px; }
  .stat-strip .stat{ flex:1 1 40%; border-right:none; }

  .two-col{ grid-template-columns:1fr; }
  .two-col aside{ order:-1; }

  .footer-grid{ grid-template-columns:1fr; gap:2.4rem; }

  .pub-item, .news-item{ grid-template-columns:1fr; gap:0.5rem; }
  .pub-tag{ width:fit-content; }
  .news-date{ display:flex; align-items:baseline; gap:0.5rem; text-align:left; }
  .news-date .d{ font-size:1.3rem; }

  .section{ padding:4rem 0; }
}

/* Phones */
@media (max-width: 600px){
  .wrap{ padding:0 18px; }
  body{ font-size:15px; }

  .utility-bar{ font-size:0.76rem; }
  .u-contact{ flex-direction:column; gap:0.3rem; align-items:center; width:100%; }

  .brand .mark{ width:40px; height:40px; font-size:0.9rem; }
  .brand .name{ font-size:0.98rem; }

  .hero-left{ padding:2.2rem 18px; }
  .hero-left .tags{ gap:0.4rem; }
  .hero-buttons{ flex-direction:column; align-items:stretch; }
  .hero-buttons .btn{ justify-content:center; }
  .hero-right{ height:82vw; }

  .section{ padding:3.2rem 0; }
  .section-head{ margin-bottom:2rem; }

  .stat-strip .stat{ flex:1 1 100%; padding:0.4rem 0; border-bottom:1px solid var(--line); }
  .stat-strip .stat:last-child{ border-bottom:none; }
  .stat-strip .num{ font-size:1.7rem; }

  .card{ padding:1.5rem; }

  .filter-row{ flex-wrap:nowrap; overflow-x:auto; padding-bottom:0.4rem; -webkit-overflow-scrolling:touch; }
  .filter-row a{ flex:none; }

  .pub-item{ padding:1.3rem 0; }
  .pub-item h3{ font-size:1rem; }

  .timeline{ padding-left:1.3rem; }
  .timeline-item::before{ left:-1.75rem; width:9px; height:9px; }

  .side-card{ padding:1.5rem; }
  .side-card .mark-lg{ width:70px; height:70px; font-size:1.4rem; }

  .form-grid{ grid-template-columns:1fr; }

  .map-frame iframe{ height:220px; }

  .footer-grid{ gap:2rem; padding-bottom:2.2rem; }
  .footer-social{ gap:0.5rem; }
  .footer-social a{ font-size:0.76rem; padding:0.35rem 0.8rem; }
}