/* ============================================================
   APSN — Andhra Pradesh Society of Nephrology
   Modern medical theme
   ============================================================ */
:root{
  --brand:#8c3b3b;         /* kidney maroon */
  --brand-2:#a84a4a;       /* lighter maroon (hover) */
  --brand-3:#4a1f1f;       /* deep burgundy */
  --accent:#c9a227;        /* muted gold */
  --accent-2:#e0b940;
  --ink:#2a1c1a;
  --muted:#7a6560;
  --bg:#faf6f4;            /* warm off-white */
  --card:#ffffff;
  --line:#ede3df;
  --radius:16px;
  --shadow:0 10px 30px rgba(74,31,31,.10);
  --shadow-sm:0 4px 14px rgba(74,31,31,.08);
}
*{box-sizing:border-box}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;
}
h1,h2,h3,h4,h5,h6,.navbar-brand strong{font-family:'Sora',sans-serif;font-weight:700;color:var(--ink);letter-spacing:-.01em}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-2)}
main{min-height:60vh}
.section{padding:72px 0}
.section-sm{padding:48px 0}
.bg-soft{background:var(--bg)}
.text-brand{color:var(--brand)!important}
.eyebrow{color:var(--brand-2);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;margin-bottom:.5rem}

/* ---------- top bar / nav ---------- */
.topbar{background:var(--brand-3);color:#eadfdc;padding:8px 0;font-size:.85rem}
.topbar a{color:#eadfdc;text-decoration:none}.topbar a:hover{color:#fff}
.topbar-sep{display:inline-block;width:1px;height:14px;background:rgba(255,255,255,.25)}
.site-nav{background:#fff;box-shadow:0 2px 18px rgba(16,50,64,.06);padding:.6rem 0;z-index:1030}
.navbar-brand .brand-text strong{font-size:1.25rem;color:var(--brand);line-height:1}
.navbar-brand .brand-text small{font-size:.68rem;color:var(--muted);letter-spacing:.02em}
.site-nav .nav-link{font-weight:600;color:var(--ink);padding:.55rem .85rem!important;border-radius:8px;position:relative;font-size:.96rem}
.site-nav .nav-link:hover,.site-nav .nav-link.active{color:var(--brand);background:rgba(140,59,59,.07)}
.site-nav .nav-link.dropdown-toggle::after{border-top-color:currentColor;opacity:.55;margin-left:.4em}
.dropdown-menu{border:0;box-shadow:var(--shadow);border-radius:12px;padding:.4rem;margin-top:.4rem!important}
.dropdown-item{border-radius:8px;padding:.55rem .8rem;font-weight:500}
.dropdown-item:hover{background:rgba(140,59,59,.09);color:var(--brand)}

/* ---------- mega menu ---------- */
.site-nav .container{position:relative}
/* 70% of the screen, centred, regardless of which item opened it.
   NOTE: the [data-bs-popper] selector is needed to beat Bootstrap's
   `.dropdown-menu[data-bs-popper]{left:0}` — without it the panel
   only gets the transform and slides off the left edge. */
.site-nav .dropdown-menu.mega-menu,
.site-nav .dropdown-menu.mega-menu[data-bs-popper]{
  position:absolute;top:100%;
  left:50%;right:auto;transform:translateX(-50%);
  width:70vw;max-width:1120px;min-width:620px;
  border:0;border-radius:14px;padding:0;margin-top:.5rem;
  box-shadow:0 20px 54px rgba(74,31,31,.18);border-top:3px solid var(--brand);
  /* NOTE: no `overflow:hidden` here — it would clip the ::before hover bridge
     below and make the gap under the navbar close the panel (flicker). The
     bottom corners are rounded on .mega-foot instead. */
}
.mega-inner{padding:1.4rem 1.5rem 0}
.mega-col-title{
  font-family:'Sora',sans-serif;font-size:.72rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.12em;color:var(--brand);margin-bottom:.6rem;padding-bottom:.45rem;border-bottom:1px solid var(--line);
}
.mega-col-title.is-blank{visibility:hidden}

/* --- open on HOVER (desktop) --- */
@media(min-width:992px){
  .site-nav .nav-item.dropdown:hover > .dropdown-menu.mega-menu,
  .site-nav .nav-item.dropdown:focus-within > .dropdown-menu.mega-menu{display:block}
  /* invisible bridge across the gap so the panel doesn't close mid-move.
     Must be at least as tall as the panel's margin-top (.5rem = 8px). */
  .site-nav .dropdown-menu.mega-menu::before{
    content:"";position:absolute;left:0;right:0;top:-16px;height:16px;
  }
  .site-nav .nav-item.dropdown:hover > .nav-link{color:var(--brand);background:rgba(140,59,59,.07)}
  .site-nav .nav-item.dropdown:hover > .nav-link.dropdown-toggle::after{transform:rotate(180deg)}
  .site-nav .nav-link.dropdown-toggle::after{transition:transform .18s ease}
}
/* --- tap to expand (mobile) --- */
@media(max-width:991.98px){
  .site-nav .nav-item.dropdown.open > .dropdown-menu.mega-menu{display:block}
  .site-nav .nav-item.dropdown.open > .nav-link.dropdown-toggle::after{transform:rotate(180deg)}
}
/* even column rhythm + subtle separators between columns */
.mega-menu .row > [class*="col-"]{position:relative}
.mega-menu .row > [class*="col-"] + [class*="col-"]::before{
  content:"";position:absolute;left:-.75rem;top:.2rem;bottom:.6rem;width:1px;background:var(--line);
}
@media(max-width:991.98px){ .mega-menu .row > [class*="col-"] + [class*="col-"]::before{display:none} }
.mega-link{
  display:flex;gap:.7rem;align-items:flex-start;padding:.5rem .6rem;border-radius:10px;
  color:var(--ink);text-decoration:none;transition:.16s;margin-bottom:.15rem;
}
.mega-link:hover{background:rgba(140,59,59,.07);color:var(--brand);transform:translateX(2px)}
.mega-link i{color:var(--brand);font-size:1rem;margin-top:.15rem;flex:0 0 auto}
.mega-link strong{display:block;font-weight:600;font-size:.9rem;line-height:1.3}
.mega-link small{display:block;color:var(--muted);font-size:.76rem;line-height:1.35;margin-top:.1rem}
.mega-feature{
  background:linear-gradient(150deg,#3a1616,#8c3b3b);color:#fff;border-radius:12px;padding:1.1rem;height:100%;
}
.mega-feature h6{color:#fff;font-size:.95rem}
.mega-feature p{color:rgba(255,255,255,.72)}
.mega-feature-tag{
  display:inline-block;background:var(--accent);color:#3a2a05;font-weight:700;font-size:.66rem;
  letter-spacing:.1em;text-transform:uppercase;border-radius:50px;padding:.15rem .6rem;margin-bottom:.6rem;
}
.mega-feature-img{width:100%;max-height:130px;object-fit:cover;border-radius:8px;margin-bottom:.7rem}
.mega-foot{
  margin-top:1.2rem;padding:.75rem 1.5rem;background:var(--bg);border-top:1px solid var(--line);
  margin-left:-1.5rem;margin-right:-1.5rem;   /* match .mega-inner's side padding */
  border-radius:0 0 14px 14px;                /* panel no longer clips this */
}
.mega-foot a{font-weight:600;font-size:.86rem;color:var(--brand);text-decoration:none}
.mega-foot a:hover{color:var(--brand-2)}

/* mobile: flatten the mega panel */
@media(max-width:991.98px){
  .site-nav .dropdown-menu.mega-menu,
  .site-nav .dropdown-menu.mega-menu[data-bs-popper]{
    position:static;transform:none;left:auto;right:auto;
    width:auto;min-width:0;max-width:none;
    box-shadow:none;border-top:0;margin-top:0;background:transparent;
  }
  .mega-inner{padding:.4rem 0 0}
  .mega-feature{display:none}
  .mega-foot{margin:0;padding:.6rem 0;background:transparent;border-radius:0}
  .site-nav .navbar-collapse{max-height:78vh;overflow-y:auto}
}

/* ---------- buttons ---------- */
.btn{border-radius:10px;font-weight:600;padding:.6rem 1.3rem}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-2);border-color:var(--brand-2);color:#fff}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#3a2a05}
.btn-accent:hover{filter:brightness(1.05);color:#3a2a05}
.btn-outline-brand{border-color:var(--brand);color:var(--brand)}
.btn-outline-brand:hover{background:var(--brand);color:#fff}

/* ---------- hero ---------- */
.hero{position:relative;background:linear-gradient(135deg,#3a1616 0%,#8c3b3b 65%,#a84a4a 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.12),transparent 45%),radial-gradient(circle at 10% 90%,rgba(255,255,255,.08),transparent 40%)}
.hero .container{position:relative;z-index:3;padding:90px 15px 100px}
/* rotating background photos */
.hero-slides{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-slide{
  position:absolute;inset:0;background-size:cover;background-position:center top;background-repeat:no-repeat;
  opacity:0;transition:opacity 1.6s ease-in-out;transform:scale(1.04);
}
.hero-slide.active{opacity:1;animation:heroZoom 9s ease-out forwards}
@keyframes heroZoom{from{transform:scale(1.04)}to{transform:scale(1.10)}}
/* Lighter overlay so the photograph stays clearly visible,
   but still dark enough on the left for the headline to read. */
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(100deg, rgba(46,17,17,.90) 0%, rgba(74,31,31,.66) 38%, rgba(140,59,59,.34) 70%, rgba(140,59,59,.26) 100%),
    linear-gradient(to top, rgba(46,17,17,.55) 0%, rgba(46,17,17,0) 45%);
}
/* extra legibility just behind the text block */
.hero h1,.hero p.lead{text-shadow:0 2px 14px rgba(30,10,10,.45)}
@media (prefers-reduced-motion: reduce){
  .hero-slide{transition:none}
  .hero-slide.active{animation:none}
}
.hero h1{color:#fff;font-size:clamp(2rem,4vw,3.2rem);line-height:1.1}
.hero p.lead{color:#d6ecf0;font-size:1.15rem;max-width:640px}
.hero .badge-soft{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:50px;padding:.4rem 1rem;font-weight:600;font-size:.85rem}

/* ---------- conference banner card ---------- */
.conf-banner{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);backdrop-filter:blur(6px);padding:1.4rem 1.6rem}
.conf-banner .label{color:var(--accent);font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-size:.75rem}

/* ---------- cards ---------- */
.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-sm);transition:.25s;overflow:hidden}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.card-body{padding:1.4rem}
.icon-badge{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;font-size:1.5rem;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:1rem}

.stat{background:#fff;border-radius:var(--radius);padding:1.6rem;text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--line);height:100%}
.stat .num{font-family:'Sora';font-size:2.4rem;font-weight:800;color:var(--brand);line-height:1}
.stat .lbl{color:var(--muted);font-weight:600;font-size:.9rem;margin-top:.3rem}

/* ---------- page header ---------- */
.page-head{background:linear-gradient(120deg,#3a1616,#8c3b3b);color:#fff;padding:56px 0 46px}
.page-head h1{color:#fff;margin-bottom:.35rem}
.page-head .breadcrumb{--bs-breadcrumb-divider-color:#cfe3ea;margin:0}
.page-head .breadcrumb a{color:#cfe3ea}
.page-head .breadcrumb .active{color:#fff}

/* ---------- rich content ---------- */
.content h1,.content h2{margin:1.6rem 0 .8rem;font-size:1.6rem}
.content h3{margin:1.3rem 0 .6rem;font-size:1.25rem;color:var(--brand-3)}
.content p{margin-bottom:1rem;color:#334}
.content ul,.content ol{margin-bottom:1rem}
.content li{margin-bottom:.4rem}
.content img{max-width:100%;height:auto;border-radius:12px;box-shadow:var(--shadow-sm);margin:.5rem 0}
.content figure{margin:0 0 1rem}
.content a{text-decoration:underline}
.content table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.95rem}
.content table th{background:var(--brand);color:#fff;padding:.7rem;text-align:left}
.content table td{padding:.65rem .7rem;border-bottom:1px solid var(--line)}
.content table tr:nth-child(even) td{background:#f7fafb}

/* ---------- members table ---------- */
.table-members thead th{background:var(--brand-3);color:#fff;border:0;white-space:nowrap;font-size:.85rem;text-transform:uppercase;letter-spacing:.03em}
.table-members td{vertical-align:middle}
.member-tag{display:inline-block;background:rgba(18,163,168,.12);color:var(--brand);border-radius:50px;padding:.15rem .7rem;font-size:.8rem;font-weight:600}

/* ---------- pagination ---------- */
.pagination .page-link{
  color:var(--brand);border-color:var(--line);border-radius:8px;margin:0 2px;font-weight:600;
}
.pagination .page-link:hover{background:rgba(140,59,59,.08);border-color:var(--brand);color:var(--brand)}
.pagination .page-item.active .page-link{background:var(--brand);border-color:var(--brand);color:#fff}
.pagination .page-item.disabled .page-link{color:#bcaaa6;background:transparent;border-color:var(--line)}
.pagination .page-link:focus{box-shadow:0 0 0 .2rem rgba(140,59,59,.2)}

/* ---------- office bearers ---------- */
.bearer-card{text-align:center;padding:1.6rem 1rem}
.bearer-card img,.bearer-ph{width:110px;height:110px;border-radius:50%;object-fit:cover;margin:0 auto 1rem;border:4px solid #eaf4f5;background:#eaf4f5;display:grid;place-items:center;color:var(--brand);font-size:2rem}
.bearer-card .role{color:var(--brand-2);font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.05em}
.bearer-card .name{font-family:'Sora';font-weight:700;margin:.3rem 0 .1rem}
.bearer-card .place{color:var(--muted);font-size:.88rem}

/* ---------- conference cards ---------- */
.conf-card .poster{aspect-ratio:3/4;object-fit:cover;width:100%;background:#eef3f5}
.conf-card .meta{font-size:.85rem;color:var(--muted)}
.conf-pill{position:absolute;top:12px;left:12px;background:var(--accent);color:#3a2a05;font-weight:700;border-radius:50px;padding:.25rem .8rem;font-size:.8rem}
.conf-pill.up{background:var(--brand);color:#fff}

/* ---------- gallery ---------- */
.gal-grid{columns:4;column-gap:14px}
.gal-grid img{width:100%;margin-bottom:14px;border-radius:12px;cursor:pointer;transition:.25s;box-shadow:var(--shadow-sm)}
.gal-grid img:hover{transform:scale(1.02);box-shadow:var(--shadow)}
@media(max-width:992px){.gal-grid{columns:3}}
@media(max-width:768px){.gal-grid{columns:2}}
@media(max-width:480px){.gal-grid{columns:1}}

/* ---------- footer ---------- */
.site-footer{background:#2e1414;color:#cdd9e3;padding:60px 0 28px;margin-top:0}
.footer-head{color:#fff;font-family:'Sora';font-size:1rem;margin-bottom:1rem}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:.55rem}
.footer-links a{color:#cdd9e3}.footer-links a:hover{color:var(--brand-2)}
.footer-contact li{display:flex;gap:.6rem;margin-bottom:.7rem;color:#cdd9e3}
.footer-contact i{color:var(--brand-2)}
.footer-contact a{color:#cdd9e3}

.footer-legal{color:#cdbcb7;text-decoration:none}
.footer-legal:hover{color:#fff;text-decoration:underline}
.dev-credit{color:var(--accent);font-weight:600;text-decoration:none}
.dev-credit:hover{color:var(--accent-2);text-decoration:underline}

.back-to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;z-index:1040}
.back-to-top.show{opacity:1;pointer-events:auto}
.back-to-top:hover{background:var(--brand-2);color:#fff}

/* ============================================================
   MEMBER AREA
   ============================================================ */
.bg-brand{background:var(--brand)!important}
.member-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;position:sticky;top:96px}
.member-side-head{display:flex;gap:.8rem;align-items:center;padding:1.1rem;background:linear-gradient(135deg,#3a1616,#8c3b3b);color:#fff}
.member-side-head img,.member-avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.member-avatar{background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:1.4rem;color:#fff}
.member-side-head strong{font-size:.95rem;line-height:1.2}
.member-side-head .member-tag{background:rgba(255,255,255,.2);color:#fff}
.member-side-nav{display:flex;flex-direction:column;padding:.5rem}
.member-side-nav a{display:flex;align-items:center;gap:.7rem;padding:.65rem .8rem;border-radius:10px;color:var(--ink);text-decoration:none;font-weight:500;font-size:.92rem}
.member-side-nav a:hover{background:rgba(140,59,59,.07);color:var(--brand)}
.member-side-nav a.active{background:var(--brand);color:#fff}
.member-side-nav a.active i{color:#fff}
.member-side-nav i{color:var(--brand);width:18px;text-align:center}
.member-side-nav a.active i,.member-side-nav a.text-danger i{color:inherit}
@media(max-width:991.98px){.member-side{position:static}}

/* ---------- membership certificate ---------- */
.cert-wrap{overflow-x:auto}
.cert{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:14px;min-width:640px}
.cert-border{border:3px double var(--brand);padding:2.4rem 2rem;text-align:center;position:relative;background:
   radial-gradient(circle at 12% 12%,rgba(201,162,39,.07),transparent 26%),
   radial-gradient(circle at 88% 88%,rgba(140,59,59,.06),transparent 26%)}
.cert-logo{width:74px;height:74px;border-radius:50%;object-fit:cover;margin-bottom:.6rem}
.cert-head h2{font-size:1.35rem;color:var(--brand-3);margin:0}
.cert-sub{font-size:.78rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin:.2rem 0 0}
.cert-title{font-family:'Sora',sans-serif;font-size:1.7rem;font-weight:800;color:var(--brand);margin:1.4rem 0 .8rem;letter-spacing:.02em}
.cert-lead{color:var(--muted);margin:0;font-size:.9rem}
.cert-name{font-family:'Sora',sans-serif;font-size:1.9rem;font-weight:700;color:var(--brand-3);margin:.4rem 0 .8rem;border-bottom:2px solid var(--accent);display:inline-block;padding:0 1.4rem .3rem}
.cert-body{max-width:640px;margin:0 auto 1.6rem;color:#3d2b28;line-height:1.75}
.cert-meta{display:flex;justify-content:center;gap:2.4rem;flex-wrap:wrap;margin-bottom:2.2rem}
.cert-meta span{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.cert-meta strong{color:var(--brand-3)}
.cert-sign{display:flex;justify-content:space-around;gap:2rem;margin-top:1rem}
.cert-sign>div{min-width:170px}
.cert-sign-line{border-top:1px solid #8a7a76;margin-bottom:.35rem}
.cert-sign strong{display:block;font-size:.9rem}
.cert-sign span{font-size:.75rem;color:var(--muted)}
.cert-foot{margin:1.8rem 0 0;font-size:.72rem;color:var(--muted)}

/* ---------- ID card ---------- */
.idcard-sheet{display:flex;gap:1.2rem;flex-wrap:wrap}
.idcard{width:340px;height:214px;border-radius:12px;overflow:hidden;background:#fff;
  box-shadow:var(--shadow);border:1px solid var(--line);display:flex;flex-direction:column;flex:0 0 auto}
.idcard-top{display:flex;gap:.6rem;align-items:center;padding:.55rem .8rem;background:linear-gradient(120deg,#3a1616,#8c3b3b);color:#fff}
.idcard-logo{width:34px;height:34px;border-radius:50%;object-fit:cover;background:#fff}
.idcard-org strong{display:block;font-size:.95rem;line-height:1}
.idcard-org span{font-size:.58rem;opacity:.85;letter-spacing:.03em}
.idcard-body{display:flex;gap:.7rem;padding:.7rem .8rem;flex:1}
.idcard-photo{width:66px;height:80px;border-radius:6px;overflow:hidden;background:#f3ebe9;display:grid;place-items:center;flex:0 0 auto;border:1px solid var(--line)}
.idcard-photo img{width:100%;height:100%;object-fit:cover}
.idcard-photo i{font-size:1.8rem;color:#b9a5a0}
.idcard-name{font-family:'Sora',sans-serif;font-weight:700;font-size:.92rem;color:var(--brand-3);line-height:1.15}
.idcard-role{font-size:.68rem;color:var(--brand);text-transform:uppercase;letter-spacing:.07em;margin-bottom:.35rem}
.idcard-info dl{display:grid;grid-template-columns:auto 1fr;gap:.1rem .5rem;margin:0;font-size:.65rem}
.idcard-info dt{color:var(--muted);font-weight:500}
.idcard-info dd{margin:0;font-weight:600;color:#3d2b28}
.idcard-strip{background:var(--accent);color:#3a2a05;font-size:.66rem;font-weight:800;letter-spacing:.14em;
  padding:.3rem .8rem;display:flex;justify-content:space-between;align-items:center}
.idcard-strip span{font-weight:600;letter-spacing:.04em}
.idcard-back{padding:.8rem;justify-content:space-between}
.idcard-back-head{font-size:.72rem;font-weight:700;color:var(--brand-3);border-bottom:1px solid var(--line);padding-bottom:.35rem;margin-bottom:.5rem}
.idcard-back-list{display:grid;grid-template-columns:auto 1fr;gap:.15rem .6rem;margin:0;font-size:.66rem}
.idcard-back-list dt{color:var(--muted)}
.idcard-back-list dd{margin:0;font-weight:600;word-break:break-all}
.idcard-note{font-size:.58rem;color:var(--muted);margin:.5rem 0;line-height:1.4}
.idcard-back-foot{display:flex;flex-direction:column;gap:.12rem;font-size:.58rem;color:var(--brand-3);border-top:1px solid var(--line);padding-top:.35rem}
.idcard-back-foot i{color:var(--brand);width:11px}

/* ---------- print ---------- */
@media print{
  .topbar,.site-nav,.site-footer,.back-to-top,.page-head,.d-print-none{display:none!important}
  body{background:#fff}
  .section{padding:0}
  .cert,.idcard{box-shadow:none;border:1px solid #ddd;break-inside:avoid}
  .idcard-sheet{gap:10mm}
  a[href]:after{content:none!important}
}

/* ---------- utilities ---------- */
.divider{width:60px;height:4px;background:var(--accent);border-radius:4px;margin:0 0 1.4rem}
.text-center .divider{margin-left:auto;margin-right:auto}
.lift{transition:.25s}.lift:hover{transform:translateY(-4px)}