/* ============================================================
   12th Student's Conference — distinct visual identity
   Navy + Gold rooted in Soran palette, but with a darker, more
   "event-site" feel — bigger type, ornamental dividers, gold
   underlines, and a richer hero treatment than the main site.
============================================================ */

:root{
  --navy:        #1a3a6c;
  --navy-deep:   #0f2545;
  --navy-mid:    #2c5aa0;
  --gold:        #c8a45c;
  --gold-soft:   #e3c886;
  --gold-pale:   #f5ecd6;
  --paper:       #ffffff;
  --paper-warm:  #fbf7ed;
  --paper-soft:  #f5f7fa;
  --paper-tint:  #eef2f8;
  --ink:         #2a3144;
  --ink-soft:    #4a5168;
  --mute:        #6b7280;
  --rule:        #e0e6ef;
  --rule-soft:   #eef0f5;
  --danger:      #c62828;
  --success:     #2e7d32;

  --serif: "Source Serif 4", "Times New Roman", Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  font-family: var(--sans);
  font-size: 16px; line-height: 1.6;
  color: var(--ink); background: var(--paper-warm);
  min-height: 100vh; display: flex; flex-direction: column;
}
a{ color: var(--navy); text-decoration: none; transition: color .2s; }
a:hover{ color: var(--gold); }
img{ max-width: 100%; display: block; }
::selection{ background: var(--gold); color: var(--navy-deep); }

.wrap{ width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============================================================
   PUBLIC HEADER  ─ distinct, ornamental
============================================================ */
.c-topbar{
  background: var(--navy-deep); color: rgba(255,255,255,.85);
  font-size: 13px; padding: 8px 0;
  border-bottom: 1px solid rgba(200,164,92,.25);
}
.c-topbar .wrap{ display:flex; justify-content:space-between; flex-wrap: wrap; gap: 8px; }
.c-topbar a{ color: rgba(255,255,255,.85); margin-left: 18px; }
.c-topbar a:hover{ color: var(--gold); }
.c-topbar .back-main a{ color: var(--gold); margin-left: 0; }

.c-header{
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 2px 12px rgba(0,0,0,.04);
}
.c-header .wrap{
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; gap: 20px;
}
.c-brand{ display: flex; align-items: center; gap: 14px; }
.c-brand-mark{
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--navy); color: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 700; font-size: 18px;
  border: 2px solid var(--gold);
  position: relative;
}
.c-brand-mark::before, .c-brand-mark::after{
  content:""; position: absolute; height: 1.5px; background: var(--gold);
  width: 14px; top: 50%; transform: translateY(-50%);
}
.c-brand-mark::before{ left: -22px; }
.c-brand-mark::after{ right: -22px; }
.c-brand-text{ display: flex; flex-direction: column; line-height: 1.15; }
.c-brand-text .a{ font-family: var(--serif); font-weight: 700; font-size: 18px; color: var(--navy); letter-spacing: -.01em; }
.c-brand-text .b{ font-size: 11px; color: var(--gold); margin-top: 3px; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; }

.c-nav{ display: flex; gap: 8px; align-items: center; }
.c-nav a{
  font-size: 14px; font-weight: 600; color: var(--ink-soft);
  padding: 10px 18px; border-radius: 4px;
  transition: background .2s, color .2s;
}
.c-nav a:hover{ background: var(--paper-soft); color: var(--navy); }
.c-nav a.active{
  background: var(--navy); color: var(--paper);
}
.c-nav a.active:hover{ background: var(--navy-deep); color: var(--paper); }

.c-menu-btn{
  display:none; background:none; border:0; cursor:pointer;
  width: 38px; height: 38px; position: relative;
}
.c-menu-btn span{
  position:absolute; left:7px; right:7px; height:2.5px;
  background: var(--navy); border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.c-menu-btn span:nth-child(1){ top:12px; }
.c-menu-btn span:nth-child(2){ top:18px; }
.c-menu-btn span:nth-child(3){ top:24px; }
.c-menu-btn.open span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
.c-menu-btn.open span:nth-child(2){ opacity: 0; }
.c-menu-btn.open span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 880px){
  .c-nav{
    position: fixed; inset: 84px 0 auto 0;
    flex-direction: column; gap: 0;
    background: var(--paper); padding: 8px 24px 24px;
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 6px 24px rgba(0,0,0,.08);
    transform: translateY(-130%);
    transition: transform .35s cubic-bezier(.6,0,.2,1);
  }
  .c-nav.open{ transform: translateY(0); }
  .c-nav a{ width: 100%; padding: 14px 0; border-bottom: 1px solid var(--rule-soft); }
  .c-menu-btn{ display: block; }
}

/* ============================================================
   PAGE HEADER (sub-header below nav, ornamental)
============================================================ */
.page-head{
  background: linear-gradient(120deg, var(--navy-deep), var(--navy) 70%);
  color: var(--paper);
  padding: 50px 0 60px;
  position: relative; overflow: hidden;
}
.page-head::before{
  content:""; position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 30px, rgba(255,255,255,.03) 30px 31px),
    radial-gradient(circle at 85% 15%, rgba(200,164,92,.18), transparent 50%);
}
.page-head .wrap{ position: relative; z-index: 2; }
.page-head .crumb{
  font-size: 13px; opacity: .8; margin-bottom: 14px;
}
.page-head .crumb a{ color: var(--gold-soft); }
.page-head .crumb .sep{ margin: 0 10px; opacity: .5; }
.page-head .label{
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--gold);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gold);
  margin-bottom: 14px;
}
.page-head h1{
  font-family: var(--serif);
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.15; font-weight: 700;
  letter-spacing: -.01em;
  max-width: 900px;
}
.page-head h1 .accent{ color: var(--gold); }
.page-head .lead{
  margin-top: 12px; max-width: 640px;
  font-size: 16px; opacity: .88;
}

.page-head .deco{
  position: absolute;
  bottom: -1px; left: 0; right: 0; height: 14px;
  background-image:
    repeating-linear-gradient(90deg,
      var(--gold) 0 12px, transparent 12px 26px);
  opacity: .5;
}

/* ============================================================
   BUTTONS
============================================================ */
.btn{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 4px;
  font-family: inherit; font-weight: 600; font-size: 14px;
  border: 0; cursor: pointer;
  transition: background .2s, color .2s, transform .12s, box-shadow .2s;
  text-decoration: none;
}
.btn:active{ transform: scale(.98); }
.btn-navy{ background: var(--navy); color: var(--paper); }
.btn-navy:hover{ background: var(--navy-deep); color: var(--paper); }
.btn-gold{ background: var(--gold); color: var(--navy-deep); }
.btn-gold:hover{ background: var(--gold-soft); color: var(--navy-deep); }
.btn-out{ background: var(--paper); color: var(--navy); border: 1.5px solid var(--navy); }
.btn-out:hover{ background: var(--navy); color: var(--paper); }
.btn-out-light{ background: transparent; color: var(--paper); box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.7); }
.btn-out-light:hover{ background: var(--paper); color: var(--navy); }
.btn-danger{ background: #fce8e8; color: var(--danger); }
.btn-danger:hover{ background: #f5c0c0; color: var(--danger); }
.btn-sm{ padding: 8px 14px; font-size: 13px; }

/* ============================================================
   ALERTS / FLASHES
============================================================ */
.alert{
  padding: 12px 18px; border-radius: 4px;
  margin-bottom: 18px; font-size: 14px;
  border-left: 4px solid;
}
.alert-success{ background: #e8f5e9; color: #1b5e20; border-color: var(--success); }
.alert-error{   background: #fdecec; color: #b71c1c; border-color: var(--danger); }
.alert-info{    background: var(--gold-pale); color: var(--navy); border-color: var(--gold); }

/* ============================================================
   AGENDA PAGE
============================================================ */
.agenda-frame-wrap{
  background: var(--paper-soft);
  padding: 30px 0 50px; flex: 1;
}
.agenda-frame{
  width: 100%; height: 88vh; min-height: 600px;
  border: 1px solid var(--rule); border-radius: 6px;
  background: var(--paper);
  box-shadow: 0 8px 30px rgba(0,0,0,.08);
}
.agenda-actions{
  margin-top: 18px;
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
}
.empty-state{
  background: var(--paper); border: 2px dashed var(--rule);
  border-radius: 8px; padding: 60px 30px; text-align: center;
}
.empty-state .ico{ font-size: 60px; opacity: .3; margin-bottom: 14px; }
.empty-state h3{ color: var(--navy); margin-bottom: 8px; font-family: var(--serif); }
.empty-state p{ color: var(--mute); max-width: 480px; margin: 0 auto 18px; }

@media (max-width: 768px){
  .agenda-frame{ height: 70vh; min-height: 500px; }
}

/* ============================================================
   BOOKLET LIST + FILTERS
============================================================ */
.filter-bar{
  background: var(--paper); border-bottom: 1px solid var(--rule);
  padding: 18px 0; position: sticky; top: 84px; z-index: 9;
  box-shadow: 0 4px 14px rgba(0,0,0,.04);
}
.filter-row{
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr auto;
  gap: 12px;
}
@media (max-width: 768px){ .filter-row{ grid-template-columns: 1fr; } }

.filter-bar input, .filter-bar select{
  width: 100%; padding: 10px 14px;
  border: 1.5px solid var(--rule); border-radius: 4px;
  font-size: 14px; background: var(--paper);
  font-family: inherit; color: var(--ink);
}
.filter-bar input:focus, .filter-bar select:focus{
  outline: none; border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26,58,108,.1);
}
.search-wrap{ position: relative; }
.search-wrap input{ padding-left: 40px; }
.search-wrap::before{
  content: "🔍"; position: absolute; left: 14px; top: 50%;
  transform: translateY(-50%); font-size: 13px; opacity: .6;
}

.results-section{
  background: var(--paper-soft); padding: 30px 0 60px; flex: 1;
}
.results-meta{
  margin-bottom: 22px;
  font-size: 14px; color: var(--ink-soft);
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.results-meta strong{ color: var(--navy); font-size: 16px; }
.results-meta .clear{ color: var(--danger); font-weight: 600; }

.bk-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 768px){ .bk-grid{ grid-template-columns: 1fr; } }

.bk-card{
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: 6px; padding: 22px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
}
.bk-card::before{
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: var(--gold);
  transform: scaleY(0); transform-origin: top;
  transition: transform .35s;
}
.bk-card:hover{
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(26,58,108,.14);
  border-color: var(--gold);
}
.bk-card:hover::before{ transform: scaleY(1); }

.bk-card .tags{ display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.bk-card .tag{
  font-size: 11px; font-weight: 600;
  padding: 4px 10px; border-radius: 3px;
  background: var(--paper-tint); color: var(--navy);
  text-transform: uppercase; letter-spacing: .04em;
}
.bk-card .tag.gold{ background: var(--gold); color: var(--navy-deep); }
.bk-card h3{
  font-family: var(--serif);
  font-size: 17px; line-height: 1.4;
  color: var(--navy); margin-bottom: 12px; font-weight: 700;
}
.bk-card .info{
  display: flex; gap: 8px; align-items: flex-start;
  font-size: 13.5px; color: var(--ink); margin-bottom: 7px; line-height: 1.5;
}
.bk-card .info .ico{ color: var(--gold); font-weight: 700; flex-shrink: 0; min-width: 18px; }
.bk-card .info strong{ color: var(--navy); }
.bk-card .panel-line{
  font-size: 12px; color: var(--mute); font-style: italic;
  margin-top: 8px; padding-top: 10px;
  border-top: 1px dashed var(--rule); line-height: 1.5;
}
.bk-card .more{
  display: inline-block; margin-top: 14px; padding-top: 12px;
  border-top: 1px solid var(--rule-soft);
  font-size: 13px; font-weight: 600; color: var(--navy);
}
.bk-card .more::after{ content: " →"; transition: transform .2s; display: inline-block; }
.bk-card:hover .more::after{ transform: translateX(4px); }

.pagination{
  margin-top: 30px;
  display: flex; justify-content: center; gap: 4px;
  list-style: none;
}
.pagination a, .pagination span{
  padding: 9px 14px; border: 1px solid var(--rule);
  background: var(--paper); color: var(--navy);
  font-size: 14px; font-weight: 500;
  border-radius: 4px; min-width: 40px; text-align: center;
}
.pagination a:hover{ background: var(--paper-tint); }
.pagination .current{ background: var(--navy); color: var(--paper); border-color: var(--navy); }
.pagination .disabled{ opacity: .4; pointer-events: none; }

/* ============================================================
   BOOKLET DETAIL
============================================================ */
.detail-section{ background: var(--paper-soft); padding: 40px 0 60px; flex: 1; }
.detail-card{
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: 6px; padding: 36px 38px;
  max-width: 920px; margin: 0 auto;
  box-shadow: 0 4px 14px rgba(0,0,0,.04);
}
@media (max-width: 600px){ .detail-card{ padding: 26px 22px; } }

.detail-meta{
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 20px; margin-bottom: 30px;
  padding-bottom: 24px; border-bottom: 1px solid var(--rule);
}
@media (max-width: 600px){ .detail-meta{ grid-template-columns: 1fr; gap: 14px; } }
.meta-key{
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .12em;
  color: var(--gold); margin-bottom: 5px;
}
.meta-val{
  font-size: 15px; color: var(--navy);
  font-weight: 600; line-height: 1.5;
}
.meta-val.normal{ font-weight: 500; font-size: 14px; color: var(--ink); }

.detail-section h2{
  font-family: var(--serif);
  font-size: 14px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .14em;
  color: var(--gold); margin-bottom: 14px;
  padding-bottom: 10px; border-bottom: 2px solid var(--gold);
  display: inline-block;
}
.detail-block{ margin-bottom: 28px; }
.detail-block:last-child{ margin-bottom: 0; }
.detail-block .body{ color: var(--ink); line-height: 1.75; font-size: 15.5px; }
.detail-block .body p{ margin-bottom: 12px; }

.student-list{ list-style: none; padding: 0; }
.student-list li{
  padding: 11px 16px; background: var(--paper-tint);
  border-left: 3px solid var(--gold); margin-bottom: 6px;
  border-radius: 0 4px 4px 0; font-weight: 500; color: var(--navy);
}
.student-list li::before{ content: "👤  "; }

.detail-actions{
  margin-top: 30px; padding-top: 24px;
  border-top: 1px solid var(--rule);
  display: flex; gap: 10px; flex-wrap: wrap;
}

/* ============================================================
   FOOTER
============================================================ */
.c-footer{
  background: var(--navy-deep); color: rgba(255,255,255,.85);
  padding: 50px 0 24px; margin-top: auto;
}
.c-foot-grid{
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 40px; padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
@media (max-width: 768px){ .c-foot-grid{ grid-template-columns: 1fr; gap: 28px; } }
.c-foot-grid h4{
  font-family: var(--serif); color: var(--paper);
  font-size: 16px; margin-bottom: 14px; padding-bottom: 8px;
  border-bottom: 2px solid var(--gold); display: inline-block;
}
.c-foot-grid ul{ list-style: none; }
.c-foot-grid li{ padding: 6px 0; font-size: 14px; }
.c-foot-grid a{ color: rgba(255,255,255,.78); }
.c-foot-grid a:hover{ color: var(--gold); }
.c-foot-grid li::before{ content: "› "; color: var(--gold); }
.c-foot-about p{ font-size: 14px; line-height: 1.7; color: rgba(255,255,255,.75); margin-top: 8px; }
.c-foot-bot{
  text-align: center; padding-top: 22px;
  font-size: 13px; color: rgba(255,255,255,.5);
}

/* ============================================================
   ADMIN — separate look
============================================================ */
.admin-body{ background: var(--paper-soft); }

.adm-login-wrap{
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--navy-deep), var(--navy));
  padding: 30px 20px;
}
.adm-login-card{
  background: var(--paper); border-radius: 8px;
  padding: 40px 36px; max-width: 420px; width: 100%;
  box-shadow: 0 24px 60px rgba(0,0,0,.3);
  border-top: 4px solid var(--gold);
}
.adm-login-card h1{
  font-family: var(--serif); font-size: 24px;
  color: var(--navy); margin-bottom: 6px;
}
.adm-login-card .sub{ color: var(--mute); font-size: 14px; margin-bottom: 26px; }

.adm-shell{ display: flex; min-height: 100vh; }
.adm-sidebar{
  width: 240px; background: var(--navy-deep); color: var(--paper);
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.adm-side-brand{
  padding: 22px 22px 18px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.adm-side-brand .a{ display: block; font-family: var(--serif); font-weight: 700; font-size: 17px; color: var(--paper); }
.adm-side-brand .b{ font-size: 11px; color: var(--gold); letter-spacing: .12em; text-transform: uppercase; margin-top: 4px; }
.adm-side-nav{ flex: 1; padding: 14px 12px; overflow-y: auto; }
.adm-side-nav a{
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 4px;
  color: rgba(255,255,255,.85); font-size: 14px; font-weight: 500;
  margin-bottom: 4px;
}
.adm-side-nav a:hover{ background: rgba(255,255,255,.08); color: var(--paper); }
.adm-side-nav a.active{ background: var(--gold); color: var(--navy-deep); font-weight: 600; }
.adm-side-nav .ico{ width: 22px; text-align: center; }
.adm-side-foot{
  padding: 14px 22px; border-top: 1px solid rgba(255,255,255,.08);
  font-size: 12px; color: rgba(255,255,255,.55);
}
.adm-side-foot a{ color: var(--gold); }

.adm-main{ flex: 1; padding: 32px 36px 60px; }
.adm-page-head{
  display: flex; justify-content: space-between; align-items: flex-end;
  flex-wrap: wrap; gap: 14px;
  padding-bottom: 20px; border-bottom: 1px solid var(--rule); margin-bottom: 26px;
}
.adm-page-head h1{
  font-family: var(--serif); font-size: 26px; color: var(--navy); font-weight: 700;
}
.adm-page-head .crumb{ font-size: 13px; color: var(--mute); margin-bottom: 4px; }
.adm-page-head .crumb a{ color: var(--navy); }

.adm-mobile-btn{
  display: none; background: var(--navy); color: var(--paper);
  border: 0; padding: 8px 14px; border-radius: 4px;
  font-size: 13px; font-weight: 600;
}
@media (max-width: 880px){
  .adm-shell{ flex-direction: column; }
  .adm-sidebar{ width: 100%; height: auto; position: relative; }
  .adm-side-nav{ display: none; }
  .adm-side-nav.open{ display: block; }
  .adm-mobile-btn{ display: inline-block; }
  .adm-main{ padding: 24px 20px 50px; }
}

.adm-card{
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: 6px; padding: 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.adm-card h2{
  font-family: var(--serif); font-size: 18px;
  color: var(--navy); margin-bottom: 16px;
  padding-bottom: 10px; border-bottom: 2px solid var(--gold); display: inline-block;
}

.form-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; margin-bottom: 14px; }
@media (max-width: 720px){ .form-grid{ grid-template-columns: 1fr; } }
.form-grid.full{ grid-template-columns: 1fr; }

.form-field{ display: flex; flex-direction: column; gap: 6px; }
.form-field label{
  font-size: 13px; font-weight: 600; color: var(--navy);
}
.form-field label .req{ color: var(--danger); }
.form-field input, .form-field select, .form-field textarea{
  padding: 10px 14px; border: 1.5px solid var(--rule);
  border-radius: 4px; font-size: 14px; font-family: inherit;
  color: var(--ink); background: var(--paper);
  width: 100%;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus{
  outline: none; border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26,58,108,.1);
}
.form-field textarea{ min-height: 80px; resize: vertical; }
.form-field .hint{ font-size: 12px; color: var(--mute); }

.form-actions{
  margin-top: 22px; padding-top: 20px;
  border-top: 1px solid var(--rule);
  display: flex; gap: 10px; flex-wrap: wrap;
}

/* Admin tables */
.adm-table{ width: 100%; border-collapse: collapse; font-size: 14px; }
.adm-table th{
  text-align: left; padding: 12px 14px; background: var(--paper-tint);
  color: var(--navy); font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .04em;
  border-bottom: 2px solid var(--gold);
}
.adm-table td{
  padding: 14px; border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}
.adm-table tr:hover td{ background: var(--paper-soft); }
.adm-table .actions{ display: flex; gap: 6px; flex-wrap: wrap; }

.tag{
  display: inline-block;
  font-size: 11px; font-weight: 600;
  padding: 3px 9px; border-radius: 3px;
  background: var(--paper-tint); color: var(--navy);
  text-transform: uppercase; letter-spacing: .04em;
}
.tag.gold{ background: var(--gold); color: var(--navy-deep); }
.tag.green{ background: #e8f5e9; color: #1b5e20; }
.tag.gray{ background: var(--paper-tint); color: var(--mute); }

/* Stat cards */
.stat-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 26px; }
@media (max-width: 880px){ .stat-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px){ .stat-grid{ grid-template-columns: 1fr; } }
.stat-card{
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: 6px; padding: 22px;
  border-left: 4px solid var(--gold);
}
.stat-card .num{
  font-family: var(--serif); font-weight: 700; font-size: 36px;
  color: var(--navy); line-height: 1; margin-bottom: 6px;
}
.stat-card .lab{
  font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--mute);
}

/* PDF preview in admin */
.pdf-preview{
  border: 1px solid var(--rule); border-radius: 4px;
  background: var(--paper-soft); padding: 0; overflow: hidden;
  margin-bottom: 18px;
}
.pdf-preview iframe{ width: 100%; height: 500px; border: 0; }
.pdf-preview .pdf-meta{
  padding: 14px 18px; background: var(--paper);
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
  font-size: 13px;
}
.pdf-preview .pdf-meta strong{ color: var(--navy); }
.pdf-preview .pdf-meta .size{ color: var(--mute); font-family: monospace; }

.upload-area{
  border: 2px dashed var(--rule); border-radius: 6px;
  padding: 30px; text-align: center; background: var(--paper-soft);
  transition: border-color .2s, background .2s;
  cursor: pointer; display: block;
}
.upload-area:hover{ border-color: var(--navy); background: var(--paper-tint); }
.upload-area.drag{ border-color: var(--gold); background: var(--gold-pale); }
.upload-area input{ display: none; }
.upload-area .ico{ font-size: 38px; margin-bottom: 8px; opacity: .6; }
.upload-area .lbl{ font-weight: 600; color: var(--navy); }
.upload-area .hint{ font-size: 12px; color: var(--mute); margin-top: 4px; }


/* ============================================================
   APPEND THIS to the END of /assets/css/style.css
   ============================================================ */

/* ----- Public header logo ----- */
.c-brand-logo {
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  display: block;
}

@media (max-width: 540px) {
  .c-brand-logo {
    height: 30px;
    max-width: 130px;
  }
}

/* ----- Admin sidebar logo ----- */
.adm-side-logo {
  background: var(--paper);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.adm-side-logo img {
  max-height: 60px;
  max-width: 100%;
  height: auto;
  width: auto;
  object-fit: contain;
}

/* ----- Conference poster section ----- */
.poster-section {
  background: var(--paper-warm);
  padding: 40px 0 10px;
}

.poster-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 8px 28px rgba(0,0,0,.08);
  position: relative;
  overflow: hidden;
}

.poster-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(200,164,92,.04) 14px 15px);
  pointer-events: none;
}

.poster-link {
  display: block;
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  cursor: zoom-in;
}

.conference-poster {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
  transition: transform .35s cubic-bezier(.2,.8,.2,1);
}

.poster-link:hover .conference-poster {
  transform: scale(1.015);
}

.poster-zoom-hint {
  position: absolute;
  right: 12px;
  bottom: 12px;
  background: rgba(15, 37, 69, .85);
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .25s, transform .25s;
  backdrop-filter: blur(6px);
  pointer-events: none;
}

.poster-link:hover .poster-zoom-hint {
  opacity: 1;
  transform: translateY(0);
}

/* ----- Section title that sits above the agenda PDF ----- */
.section-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--gold);
  display: inline-block;
}

@media (max-width: 600px) {
  .poster-card {
    padding: 12px;
    margin: 0 4px;
  }
  .poster-section {
    padding: 24px 0 4px;
  }
}