/* =========================================
   SEATNGA 2026 — Submission Section Styles
   Light • Clean • Accessible • Performant
========================================= */

/* Section wrapper */
.paper-submission {
  width: 100%;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 30%, #f1f5f9 70%, #ffffff 100%);
  padding: 72px 24px;
  margin: 0;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
}

/* Subtle background accents */
.paper-submission::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(50% 50% at 18% 82%, rgba(190, 38, 51, 0.05) 0%, transparent 65%),
    radial-gradient(50% 50% at 82% 18%, rgba(36, 54, 88, 0.05) 0%, transparent 65%);
  pointer-events: none;
}

.paper-submission .container {
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Headings */
.paper-submission h3 {
  margin: 0 0 22px;
  font: 800 clamp(1.3rem, 3.2vw, 2rem)/1.2 Inter, "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
  color: #243658;
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
  letter-spacing: clamp(0.4px, 0.25vw, 1.2px);
  text-transform: uppercase;
  background: linear-gradient(135deg, #243658 0%, #BE2633 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.paper-submission h3::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: clamp(64px, 12vw, 96px);
  height: 3px;
  background: linear-gradient(135deg, #BE2633, #243658);
  border-radius: 3px;
  box-shadow: 0 3px 12px rgba(190, 38, 51, 0.28);
}

.paper-submission .container > h3:not(:first-child) {
  margin-top: 28px;
}

/* Paragraphs */
.paper-submission p {
  margin: 0 0 14px;
  color: #394a5c;
  font: 500 clamp(1rem, 1.9vw, 1.06rem)/1.85 Inter, "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
}

.paper-submission p + p {
  margin-top: 6px;
}

/* Simpler lists (disc bullets) */
.paper-submission ul {
  list-style: disc;
  margin: 0 0 18px 22px;
  padding: 0;
}

.paper-submission ul li {
  margin: 0 0 8px;
  color: #3a4657;
  font: 500 clamp(0.98rem, 1.6vw, 1.04rem)/1.75 Inter, "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
}

/* Nested lists, if any */
.paper-submission ul ul {
  margin: 6px 0 6px 18px;
}

/* Links */
.paper-submission a {
  color: #1d4ed8;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px dotted rgba(29, 78, 216, 0.5);
}

.paper-submission a:hover {
  text-decoration: underline;
  border-bottom-color: transparent;
}

.paper-submission a:focus-visible {
  outline: 3px solid rgba(29, 78, 216, 0.35);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .paper-submission * {
    transition: none !important;
    animation: none !important;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .paper-submission { padding: 56px 20px; }
}

@media (max-width: 560px) {
  .paper-submission { padding: 44px 16px; }
  .paper-submission .container { max-width: 100%; }
  .paper-submission h3 { text-transform: none; letter-spacing: 0.5px; }
  .paper-submission h3::after { width: 72px; }
}

/* Print */
@media print {
  .paper-submission {
    background: #fff;
    padding: 20px;
    box-shadow: none;
  }
  .paper-submission::before { display: none; }
  .paper-submission h3,
  .paper-submission p,
  .paper-submission ul li { break-inside: avoid; }
}