/* ============================================================
   ICCETT-2027 | Main Stylesheet
   Design: Deep Navy + Gold | Modern Academic
   ============================================================ */

:root {
  --navy: #0d1b4b;
  --navy-mid: #1a3275;
  --gold: #c9952e;
  --gold-light: #f0b429;
  --accent: #2196f3;
  --success: #16a34a;
  --surface: #ffffff;
  --surface-2: #f8f9fc;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(13,27,75,.10);
  --shadow-lg: 0 12px 40px rgba(13,27,75,.15);
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

[data-bs-theme="dark"] {
  --surface: #0f172a;
  --surface-2: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #334155;
  --shadow: 0 4px 24px rgba(0,0,0,.4);
}

/* ── Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.65;
}
h1, h2, h3, .display-font {
  font-family: 'Playfair Display', serif;
}
a { color: var(--navy-mid); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold); }
img { max-width: 100%; height: auto; }

/* ── News Ticker ──────────────────────────────────────────── */
.news-ticker {
  background: var(--gold);
  color: #fff;
  display: flex;
  align-items: center;
  overflow: hidden;
  height: 36px;
  font-size: .82rem;
  font-weight: 500;
}
.ticker-label {
  background: var(--navy);
  padding: 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  white-space: nowrap;
  flex-shrink: 0;
}
.ticker-wrap { flex: 1; overflow: hidden; }
.ticker-content {
  display: inline-flex;
  gap: 60px;
  white-space: nowrap;
  animation: ticker 30s linear infinite;
}
.ticker-content span::before { content: '◆ '; opacity: .6; }
@keyframes ticker {
  from { transform: translateX(100%); }
  to   { transform: translateX(-100%); }
}

/* ── Navbar ───────────────────────────────────────────────── */
#mainNav {
  background: #ffffff;
  box-shadow: var(--shadow);
  padding: .6rem 0;
  transition: all var(--transition);
}
#mainNav.scrolled {
  padding: .35rem 0;
  box-shadow: 0 8px 32px rgba(13,27,75,.12);
}
.brand-badge {
  background: var(--gold);
  color: var(--navy);
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  flex-shrink: 0;
}
/* ── Reusable site logo class (used in public header, admin header, login) ── */
.site-logo {
  height: 42px;
  max-height: 42px;
  width: auto;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .site-logo { height: 32px; max-height: 32px; }
}
@media (max-width: 480px) {
  .site-logo { height: 28px; max-height: 28px; }
}
.brand-acronym { font-weight: 700; font-size: 1rem; color: var(--navy); display: block; }
.brand-dates   { font-size: .72rem; color: rgba(13,27,75,.6); }
.navbar-nav .nav-link {
  font-size: .84rem;
  font-weight: 500;
  color: var(--navy) !important;
  border-radius: 6px;
  transition: all var(--transition);
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--gold) !important;
  background: rgba(13,27,75,.06);
}

/* ── Hero Section ─────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #162c6b 60%, #0a1435 100%);
  color: #fff;
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Ccircle cx='50' cy='50' r='40' fill='none' stroke='rgba(201,149,46,.06)' stroke-width='1'/%3E%3C/svg%3E") repeat;
  background-size: 120px 120px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,149,46,.15);
  border: 1px solid rgba(201,149,46,.3);
  color: var(--gold-light);
  padding: 8px 20px;
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: .75rem;
}
.hero h1 .highlight {
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  margin-bottom: 2rem;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  color: rgba(255,255,255,.85);
}
.hero-meta-item i { color: var(--gold-light); font-size: 1.1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 3rem; }

/* ── Countdown ────────────────────────────────────────────── */
.countdown {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.countdown-unit {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius);
  padding: 14px 20px;
  text-align: center;
  min-width: 80px;
  backdrop-filter: blur(10px);
}
.countdown-num {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: 'Playfair Display', serif;
  color: var(--gold-light);
  line-height: 1;
  display: block;
}
.countdown-lbl { font-size: .68rem; color: rgba(255,255,255,.6); text-transform: uppercase; letter-spacing: 1px; }

/* ── Section Styles ───────────────────────────────────────── */
.section-eyebrow {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: .5rem;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--navy);
  margin-bottom: .75rem;
}
[data-bs-theme="dark"] .section-title { color: #e2e8f0; }
.section-divider {
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 2px;
  margin: 0 auto .75rem;
}
.section-divider.left { margin-left: 0; }
.bg-surface { background: var(--surface) !important; }
.bg-surface-2 { background: var(--surface-2) !important; }

/* ── Cards ────────────────────────────────────────────────── */
.card-conference {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: all var(--transition);
  overflow: hidden;
}
.card-conference:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gold);
}

/* ── Highlights Cards ─────────────────────────────────────── */
.highlight-card {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.highlight-card:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: var(--shadow); }
.highlight-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--navy), var(--navy-mid));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.5rem;
  color: var(--gold-light);
}

/* ── Theme Badges ─────────────────────────────────────────── */
.theme-badge {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition);
}
.theme-badge:hover { transform: translateX(4px); box-shadow: var(--shadow); }
.theme-num {
  background: var(--gold);
  color: var(--navy);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 800;
  flex-shrink: 0;
}
.theme-name { font-size: .88rem; font-weight: 500; color: rgba(255,255,255,.9); }

/* ── Dates Table ──────────────────────────────────────────── */
.dates-table { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.dates-table th { background: var(--navy); color: #fff; font-size: .82rem; font-weight: 600; padding: 14px 20px; }
.dates-table td { padding: 14px 20px; vertical-align: middle; font-size: .9rem; border-bottom: 1px solid var(--border); }
.dates-table tr:last-child td { border-bottom: none; }
.dates-table tr.highlight-row td { background: rgba(201,149,46,.08); font-weight: 600; }
.date-badge { font-size: .78rem; background: var(--navy-mid); color: #fff; padding: 3px 10px; border-radius: 100px; }

/* ── Registration Table ───────────────────────────────────── */
.reg-table { border-radius: var(--radius); overflow: hidden; }
.reg-table th { background: var(--navy); color: #fff; padding: 14px 20px; font-size: .82rem; }
.reg-table td { padding: 14px 20px; vertical-align: middle; border-bottom: 1px solid var(--border); }
.reg-table tr:last-child td { border-bottom: none; }
.price-tag { font-weight: 700; color: var(--navy); font-size: 1rem; }
[data-bs-theme="dark"] .price-tag { color: var(--gold-light); }
.early-bird-tag { font-size: .72rem; background: #d1fae5; color: var(--success); padding: 2px 8px; border-radius: 100px; }

/* ── Paper Submission Form ────────────────────────────────── */
.form-step {
  display: none;
}
.form-step.active {
  display: block;
}
.step-indicator {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  counter-reset: step;
}
.step-item {
  flex: 1;
  text-align: center;
  position: relative;
}
.step-item::after {
  content: '';
  position: absolute;
  top: 18px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}
.step-item:last-child::after { display: none; }
.step-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .85rem;
  margin: 0 auto 6px;
  position: relative;
  z-index: 1;
}
.step-item.active .step-circle  { background: var(--navy); color: #fff; }
.step-item.done .step-circle    { background: var(--success); color: #fff; }

/* ── Schedule ─────────────────────────────────────────────── */
.schedule-day-header {
  background: linear-gradient(135deg, var(--navy), var(--navy-mid));
  color: #fff;
  padding: 16px 24px;
  border-radius: var(--radius) var(--radius) 0 0;
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
}
.schedule-item {
  display: flex;
  gap: 20px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  align-items: flex-start;
  transition: background var(--transition);
}
.schedule-item:last-child { border-bottom: none; border-radius: 0 0 var(--radius) var(--radius); }
.schedule-item:hover { background: var(--surface-2); }
.schedule-time {
  min-width: 120px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--navy-mid);
  padding-top: 2px;
}
[data-bs-theme="dark"] .schedule-time { color: var(--gold-light); }
.schedule-type-badge {
  font-size: .7rem;
  padding: 2px 8px;
  border-radius: 100px;
  font-weight: 600;
  display: inline-block;
  margin-top: 4px;
}
.type-plenary   { background: #dbeafe; color: #1d4ed8; }
.type-parallel  { background: #ede9fe; color: #7c3aed; }
.type-break, .type-lunch, .type-dinner { background: #fef3c7; color: #92400e; }
.type-opening, .type-valedictory { background: #dcfce7; color: #166534; }
.type-cultural  { background: #fce7f3; color: #9d174d; }
.type-poster    { background: #e0f2fe; color: #0369a1; }
.type-registration { background: #f1f5f9; color: #475569; }

/* ── Committee Cards ──────────────────────────────────────── */
.member-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  background: var(--surface);
  transition: all var(--transition);
}
.member-card:hover { border-color: var(--gold); box-shadow: var(--shadow); }
.member-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--gold);
  margin: 0 auto 12px;
}
.member-avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--navy-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--gold-light);
  margin: 0 auto 12px;
}
.member-name { font-weight: 700; color: var(--navy); font-size: .95rem; margin-bottom: 4px; }
[data-bs-theme="dark"] .member-name { color: #e2e8f0; }
.member-role { font-size: .75rem; color: var(--gold); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.member-inst { font-size: .78rem; color: var(--text-muted); margin-top: 4px; }

/* ── Sponsorship Tiers ────────────────────────────────────── */
.sponsor-tier-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid var(--border);
  transition: all var(--transition);
  position: relative;
}
.sponsor-tier-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.tier-platinum { border-color: #e5e4e2; }
.tier-gold     { border-color: #d4af37; }
.tier-silver   { border-color: #c0c0c0; }
.tier-bronze   { border-color: #cd7f32; }
.tier-header   { padding: 24px; text-align: center; }
.tier-platinum .tier-header { background: linear-gradient(135deg, #e8e6e0, #d4d0c8); }
.tier-gold     .tier-header { background: linear-gradient(135deg, #d4af37, #f0c040); }
.tier-silver   .tier-header { background: linear-gradient(135deg, #8e9eab, #b0b8c0); }
.tier-bronze   .tier-header { background: linear-gradient(135deg, #cd7f32, #d4945a); }
.tier-amount { font-size: 1.8rem; font-weight: 800; color: var(--navy); font-family: 'Playfair Display', serif; }
.tier-benefits { list-style: none; padding: 20px 24px; margin: 0; }
.tier-benefits li { padding: 6px 0; font-size: .88rem; border-bottom: 1px dashed var(--border); }
.tier-benefits li::before { content: '✓ '; color: var(--success); font-weight: 700; }
.tier-benefits li:last-child { border-bottom: none; }

/* ── Gallery ──────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.gallery-item {
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13,27,75,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-item-overlay i { color: #fff; font-size: 2rem; }

/* ── Lightbox ─────────────────────────────────────────────── */
#lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
#lightbox.open { opacity: 1; pointer-events: all; }
#lightbox img { max-width: 90vw; max-height: 85vh; border-radius: 8px; }
#lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* ── Forms ────────────────────────────────────────────────── */
.form-control, .form-select {
  border-color: var(--border);
  border-radius: 8px;
  font-size: .9rem;
  transition: all var(--transition);
}
.form-control:focus, .form-select:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(13,27,75,.1);
}
.form-label { font-weight: 500; font-size: .88rem; color: var(--text); margin-bottom: 6px; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn-navy {
  background: var(--navy);
  color: #fff;
  border: none;
}
.btn-navy:hover { background: var(--navy-mid); color: #fff; }
.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy);
  font-weight: 700;
  border: none;
}
.btn-gold:hover { opacity: .9; color: var(--navy); transform: translateY(-1px); }
.btn { border-radius: 8px; font-weight: 500; transition: all var(--transition); }

/* ── Page Hero ────────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  color: #fff;
  padding: 72px 0 60px;
}
.page-hero h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: .5rem;
}
.breadcrumb-item, .breadcrumb-item a { color: rgba(255,255,255,.65); font-size: .85rem; }
.breadcrumb-item.active { color: var(--gold-light); }
.breadcrumb-divider { color: rgba(255,255,255,.4); }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer { background: var(--navy); }
.footer-top { border-bottom: 1px solid rgba(255,255,255,.1); }
.site-footer .text-muted { color: rgba(255,255,255,.78) !important; }
.site-footer .col-lg-4 p { color: rgba(255,255,255,.78) !important; }
.footer-brand { display: flex !important; flex-direction: row !important; align-items: center !important; gap: 12px; flex-wrap: nowrap; }
.footer-brand img { flex-shrink: 0; }
.footer-brand span { color: #fff !important; white-space: nowrap; }
.footer-heading {
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gold-light);
  margin-bottom: 16px;
}
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: rgba(255,255,255,.65); font-size: .88rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--gold-light); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; color: rgba(255,255,255,.7); font-size: .88rem; margin-bottom: 10px; }
.footer-contact i { color: var(--gold-light); margin-top: 2px; flex-shrink: 0; }
.footer-contact a { color: rgba(255,255,255,.7); }
.footer-contact a:hover { color: var(--gold-light); }
.footer-bottom { background: rgba(0,0,0,.2); }

/* ── Back to Top ──────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--navy);
  border: none;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  box-shadow: var(--shadow);
  z-index: 1000;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--gold-light); }

/* ── Admin styles are in admin/css/ ──────────────────────── */

/* ── Utilities ────────────────────────────────────────────── */
.text-gold   { color: var(--gold) !important; }
.text-navy   { color: var(--navy) !important; }
.border-gold { border-color: var(--gold) !important; }
.bg-navy     { background: var(--navy) !important; }
.rounded-conf { border-radius: var(--radius); }
.shadow-conf  { box-shadow: var(--shadow); }
.shadow-lg-conf { box-shadow: var(--shadow-lg); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero { min-height: auto; padding: 80px 0 60px; }
  .countdown-unit { min-width: 64px; padding: 10px 14px; }
  .countdown-num  { font-size: 1.7rem; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .schedule-time { min-width: 90px; font-size: .76rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ═══════════════════════════════════════════════════════
   ORGANIZERS SECTION
═══════════════════════════════════════════════════════ */
.organizers-section {
  background: #fff;
  padding: 32px 20px 20px;
  text-align: center;
  border-bottom: 2px solid #f0f0f0;
}

/* "Organised By" label */
.org-label {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

/* JNTUA row */
.organizer-main {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  background: #f7f9fc;
  border: 1px solid #e3e8f0;
  border-radius: 12px;
  padding: 14px 28px;
  box-shadow: 0 2px 10px rgba(13,27,75,.07);
}
.organizer-logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
  flex-shrink: 0;
}
.organizer-text {
  font-size: .97rem;
  color: #1a1a2e;
  text-align: left;
  line-height: 1.5;
}
.organizer-text strong {
  font-size: 1rem;
  color: var(--navy);
}

/* Connector tree */
.collab-heading-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 6px 0 0;
  position: relative;
}
.collab-vline-top {
  width: 2px;
  height: 18px;
  background: #c9952e;
}
.collab-heading {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .07em;
  text-transform: uppercase;
  background: #fff;
  padding: 2px 16px;
  position: relative;
  z-index: 1;
}
.collab-tree {
  position: relative;
  width: 340px;
  height: 30px;
  margin-top: 0;
}
.collab-hline {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  height: 2px;
  background: #c9952e;
}
.collab-vline-left {
  position: absolute;
  top: 0;
  left: calc(50% - 130px);
  width: 2px;
  height: 30px;
  background: #c9952e;
}
.collab-vline-right {
  position: absolute;
  top: 0;
  right: calc(50% - 130px);
  width: 2px;
  height: 30px;
  background: #c9952e;
}

/* Partner cards */
.partner-container {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  margin-top: 0;
}
.partner-card {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 320px;
  padding: 16px 22px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #e3e8f0;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
  transition: transform .25s, box-shadow .25s;
  text-align: left;
}
.partner-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(13,27,75,.13);
}
.partner-logo {
  width: 90px;
  height: 90px;
  object-fit: contain;
  flex-shrink: 0;
}
.partner-text {
  font-size: .92rem;
  color: #1a1a2e;
  line-height: 1.5;
}
.partner-text strong {
  color: var(--navy);
  font-size: .95rem;
}

/* Dark mode overrides */
[data-theme="dark"] .organizers-section { background: #111827; border-color: #1f2937; }
[data-theme="dark"] .organizer-main,
[data-theme="dark"] .partner-card { background: #1f2937; border-color: #374151; }
[data-theme="dark"] .organizer-text,
[data-theme="dark"] .partner-text { color: #d1d5db; }
[data-theme="dark"] .organizer-text strong,
[data-theme="dark"] .partner-text strong { color: #f3f4f6; }
[data-theme="dark"] .collab-heading { background: #111827; }
[data-theme="dark"] .org-label { color: #93c5fd; }

/* Responsive */
@media (max-width: 767px) {
  .organizer-main { flex-direction: column; text-align: center; padding: 16px; }
  .organizer-text { text-align: center; }
  .partner-container { gap: 20px; }
  .partner-card { flex-direction: column; text-align: center; max-width: 260px; }
  .collab-tree { width: 200px; }
  .collab-hline { width: 120px; }
  .collab-vline-left { left: calc(50% - 60px); }
  .collab-vline-right { right: calc(50% - 60px); }
}