/* ============================================
   CONFERENCE WEBSITE - DESIGN SYSTEM
   Color Scheme: Navy Blue + Yellow Accent
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@700;800&display=swap');

:root {
  --navy: #001f3e;
  --navy-dark: #001529;
  --navy-light: #003366;
  --yellow: #ffcc00;
  --yellow-hover: #ffd633;
  --yellow-dark: #e6b800;
  --white: #ffffff;
  --light-gray: #f5f6f8;
  --gray: #e0e0e0;
  --mid-gray: #888;
  --dark-gray: #333;
  --text-dark: #2c3e50;
  --text-light: #ecf0f1;
  --shadow: 0 4px 20px rgba(0, 31, 62, 0.12);
  --shadow-lg: 0 8px 40px rgba(0, 31, 62, 0.18);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: var(--text-dark); background: var(--light-gray); line-height: 1.7; min-height: 100vh; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; }

/* === Top Bar === */
.top-bar { background: var(--navy-dark); padding: 8px 0; font-size: 0.82rem; color: rgba(255,255,255,0.7); border-bottom: 1px solid rgba(255,255,255,0.08); }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar a { color: rgba(255,255,255,0.7); }
.top-bar a:hover { color: var(--yellow); }
.top-bar-links { display: flex; gap: 20px; }
.top-bar-links a { font-weight: 500; letter-spacing: 0.3px; display: flex; align-items: center; gap: 5px; }

/* === Header === */
.site-header { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 50%, var(--navy) 100%); color: var(--white); position: relative; overflow: hidden; }
.site-header::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(ellipse at 30% 50%, rgba(255,204,0,0.06) 0%, transparent 60%), radial-gradient(ellipse at 70% 20%, rgba(255,255,255,0.04) 0%, transparent 50%); animation: headerBgShift 20s ease-in-out infinite alternate; }
@keyframes headerBgShift { 0% { transform: translateX(0) translateY(0); } 100% { transform: translateX(30px) translateY(-20px); } }
.header-content { position: relative; z-index: 2; text-align: center; padding: 55px 20px 50px; flex: 1; }

/* Header Logos Layout */
.header-logos {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
}
.header-logo-left,
.header-logo-right {
  flex-shrink: 0;
  width: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.header-logo-left img,
.header-logo-right img {
  max-height: 100px;
  max-width: 110px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 10px;
  padding: 6px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
}
.header-logo-left img:hover,
.header-logo-right img:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}
.header-badge { display: inline-block; background: rgba(255,204,0,0.15); border: 1px solid rgba(255,204,0,0.3); color: var(--yellow); padding: 6px 20px; border-radius: 30px; font-size: 0.8rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 18px; animation: fadeInDown 0.8s ease; }
.header-content h1 { font-family: 'Playfair Display', serif; font-size: 2.8rem; font-weight: 800; line-height: 1.2; margin-bottom: 12px; animation: fadeInUp 0.8s ease; }
.header-content h1 span { color: var(--yellow); }
.header-subtitle { font-size: 1.15rem; font-weight: 300; color: rgba(255,255,255,0.8); margin-bottom: 8px; animation: fadeInUp 1s ease; }
.header-location { font-size: 0.95rem; color: rgba(255,255,255,0.6); display: flex; align-items: center; justify-content: center; gap: 8px; animation: fadeInUp 1.2s ease; }
.header-location svg { width: 16px; height: 16px; fill: var(--yellow); }

/* === Navigation === */
.main-nav { background: var(--navy); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.main-nav .container { display: flex; justify-content: center; align-items: center; }
.nav-links { display: flex; gap: 0; }
.nav-links a { color: rgba(255,255,255,0.85); padding: 16px 16px; font-weight: 500; font-size: 0.8rem; letter-spacing: 0.4px; text-transform: uppercase; position: relative; transition: var(--transition); }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 3px; background: var(--yellow); transition: width 0.3s ease; border-radius: 3px 3px 0 0; }
.nav-links a:hover, .nav-links a.active { color: var(--yellow); background: rgba(255,204,0,0.08); }
.nav-links a:hover::after, .nav-links a.active::after { width: 60%; }

/* Hamburger */
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1010; }
.hamburger span { display: block; width: 26px; height: 2px; background: var(--white); margin: 6px 0; transition: var(--transition); border-radius: 2px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* === Container === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* === Main Layout === */
.main-layout { display: grid; grid-template-columns: 280px 1fr; gap: 30px; padding: 30px 0; min-height: 60vh; }

/* === Sidebar === */
.sidebar { position: sticky; top: 70px; align-self: start; }
.sidebar-title { background: var(--navy); color: var(--white); padding: 14px 20px; font-weight: 700; font-size: 0.85rem; letter-spacing: 1.5px; text-transform: uppercase; border-radius: var(--radius-lg) var(--radius-lg) 0 0; display: flex; align-items: center; gap: 8px; }
.sidebar-title svg { width: 18px; height: 18px; fill: var(--yellow); }
.sidebar-menu { background: var(--white); border-radius: 0 0 var(--radius-lg) var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.sidebar-menu a { display: flex; align-items: center; gap: 12px; padding: 14px 20px; color: var(--text-dark); font-weight: 500; font-size: 0.9rem; border-bottom: 1px solid var(--light-gray); transition: var(--transition); position: relative; }
.sidebar-menu a::before { content: ''; position: absolute; left: 0; top: 0; width: 3px; height: 100%; background: var(--yellow); transform: scaleY(0); transition: transform 0.3s ease; }
.sidebar-menu a:hover { background: rgba(0,31,62,0.04); padding-left: 26px; color: var(--navy); }
.sidebar-menu a:hover::before, .sidebar-menu a.active::before { transform: scaleY(1); }
.sidebar-menu a.active { background: var(--navy); color: var(--yellow); font-weight: 600; }
.sidebar-menu a:last-child { border-bottom: none; }
.sidebar-menu a svg { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; opacity: 0.6; }
.sidebar-menu a.active svg { fill: var(--yellow); opacity: 1; }

/* === Content Area === */
.content-area { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 40px; animation: fadeIn 0.5s ease; }
.content-section { display: none; animation: fadeInUp 0.4s ease; }
.content-section.active { display: block; }
.content-section h2 { font-family: 'Playfair Display', serif; font-size: 2rem; color: var(--navy); margin-bottom: 8px; position: relative; padding-bottom: 15px; }
.content-section h2::after { content: ''; position: absolute; bottom: 0; left: 0; width: 60px; height: 3px; background: linear-gradient(90deg, var(--yellow), var(--yellow-dark)); border-radius: 3px; }
.content-section h3 { font-size: 1.2rem; color: var(--navy); margin: 25px 0 12px; }
.section-subtitle { color: var(--mid-gray); font-size: 0.95rem; margin-bottom: 25px; }
.content-section p { margin-bottom: 16px; color: #555; line-height: 1.8; }

/* === Info Box === */
.info-box { background: linear-gradient(135deg, #f8faff 0%, #eef2f7 100%); border-left: 4px solid var(--yellow); border-radius: var(--radius); padding: 30px 36px; margin: 20px 0; box-shadow: 0 2px 10px rgba(0,31,62,0.06); }
.info-box p { color: #444; line-height: 1.9; }

/* === Signature Block === */
.signature-block { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--gray); }
.signature-block p { margin-bottom: 4px; color: #444; line-height: 1.6; }

/* Placeholder info box */
.placeholder-box { background: linear-gradient(135deg, var(--light-gray) 0%, #eef2f7 100%); border: 2px dashed var(--gray); border-radius: var(--radius); padding: 40px; text-align: center; color: var(--mid-gray); font-style: italic; margin: 20px 0; }
.placeholder-box svg { width: 48px; height: 48px; fill: var(--gray); margin-bottom: 12px; }
.placeholder-box p { color: var(--mid-gray); margin-bottom: 0; }

/* === Scope Grid === */
.scope-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 20px 0; }
.scope-item { background: var(--light-gray); border: 1px solid var(--gray); border-left: 3px solid var(--yellow); border-radius: var(--radius); padding: 12px 16px; font-size: 0.88rem; color: var(--text-dark); font-weight: 500; transition: var(--transition); }
.scope-item:hover { background: var(--navy); color: var(--yellow); border-color: var(--navy); transform: translateY(-2px); box-shadow: var(--shadow); }

/* === Countdown Section === */
.countdown-section { background: linear-gradient(135deg, var(--yellow) 0%, var(--yellow-dark) 100%); padding: 35px 0; text-align: center; position: relative; overflow: hidden; }
.countdown-section::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: repeating-linear-gradient(45deg, transparent, transparent 30px, rgba(255,255,255,0.03) 30px, rgba(255,255,255,0.03) 60px); }
.countdown-title { font-size: 1rem; font-weight: 700; color: var(--navy); text-transform: uppercase; letter-spacing: 3px; margin-bottom: 20px; position: relative; z-index: 1; }
.countdown-wrapper { display: flex; justify-content: center; gap: 20px; position: relative; z-index: 1; }
.countdown-item { background: var(--navy); color: var(--white); border-radius: var(--radius-lg); padding: 18px 24px; min-width: 90px; box-shadow: 0 4px 15px rgba(0,31,62,0.3); transition: transform 0.3s ease; }
.countdown-item:hover { transform: translateY(-4px); }
.countdown-number { font-size: 2.2rem; font-weight: 800; display: block; line-height: 1; color: var(--yellow); }
.countdown-label { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-top: 6px; color: rgba(255,255,255,0.7); }

/* === Quick Links === */
.quick-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 25px 0; }
.quick-card { background: var(--white); border-radius: var(--radius-lg); padding: 30px 24px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid transparent; cursor: pointer; }
.quick-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--yellow); }
.quick-card-icon { width: 56px; height: 56px; background: linear-gradient(135deg, var(--yellow), var(--yellow-dark)); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; transition: var(--transition); }
.quick-card:hover .quick-card-icon { transform: scale(1.1) rotate(5deg); }
.quick-card-icon svg { width: 26px; height: 26px; fill: var(--navy); }
.quick-card h3 { font-size: 1rem; color: var(--navy); margin-bottom: 8px; font-weight: 700; }
.quick-card p { font-size: 0.85rem; color: var(--mid-gray); line-height: 1.5; }

/* === Dates Table === */
.dates-table { width: 100%; border-collapse: collapse; margin: 20px 0; border-radius: var(--radius); overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.06); }
.dates-table thead th { background: var(--navy); color: var(--white); padding: 14px 20px; font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; text-align: left; }
.dates-table tbody td { padding: 14px 20px; border-bottom: 1px solid var(--light-gray); font-size: 0.92rem; }
.dates-table tbody tr:nth-child(even) { background: var(--light-gray); }
.dates-table tbody tr:hover { background: rgba(255,204,0,0.08); }
.date-badge { display: inline-block; background: var(--yellow); color: var(--navy); padding: 4px 12px; border-radius: 20px; font-weight: 600; font-size: 0.82rem; }

/* === Payment Cards === */
.payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 20px 0; }
.payment-card { background: var(--light-gray); border-radius: var(--radius-lg); padding: 28px; border: 1px solid var(--gray); transition: var(--transition); }
.payment-card:hover { border-color: var(--yellow); box-shadow: var(--shadow); }
.payment-card h4 { color: var(--navy); font-size: 1rem; margin-bottom: 8px; }
.payment-card .price { font-size: 1.8rem; font-weight: 800; color: var(--navy); margin-bottom: 12px; }
.payment-card .price span { font-size: 0.9rem; color: var(--mid-gray); font-weight: 400; }
.payment-card ul li { padding: 5px 0; font-size: 0.88rem; color: #555; display: flex; align-items: center; gap: 8px; }
.payment-card ul li::before { content: '✓'; color: var(--yellow-dark); font-weight: 700; }

/* === Submission Steps === */
.submission-steps { display: flex; flex-direction: column; gap: 16px; margin: 20px 0; }
.step-item { display: flex; gap: 16px; align-items: flex-start; background: var(--light-gray); padding: 20px; border-radius: var(--radius); border-left: 4px solid var(--yellow); transition: var(--transition); }
.step-item:hover { transform: translateX(4px); box-shadow: var(--shadow); }
.step-number { background: var(--navy); color: var(--yellow); width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.9rem; flex-shrink: 0; }
.step-item h4 { color: var(--navy); margin-bottom: 4px; font-size: 0.95rem; }
.step-item p { font-size: 0.85rem; color: #666; margin: 0; }

/* === CMT Submit Button === */
.cmt-submit-btn {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, #0078d4 0%, #005a9e 100%);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 16px 36px;
  border-radius: 8px;
  text-decoration: none;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 18px rgba(0,120,212,0.35);
  transition: all 0.25s ease;
}
.cmt-submit-btn:hover {
  background: linear-gradient(135deg, #005a9e 0%, #004578 100%);
  box-shadow: 0 6px 24px rgba(0,120,212,0.5);
  transform: translateY(-2px);
}
.cmt-submit-btn:active { transform: translateY(0); }

/* === Supporting Journals === */
.journals-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 20px 0; }
.journal-card { display: flex; align-items: center; gap: 16px; background: var(--white); border-radius: var(--radius-lg); padding: 24px; text-decoration: none; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid transparent; }
.journal-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--yellow); }
.journal-icon { width: 50px; height: 50px; background: rgba(0,31,62,0.05); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: var(--transition); }
.journal-cover { width: 65px; height: 90px; object-fit: cover; border-radius: 4px; box-shadow: 0 2px 6px rgba(0,0,0,0.1); flex-shrink: 0; transition: var(--transition); border: 1px solid var(--light-gray); }
.journal-card:hover .journal-cover { transform: scale(1.05); box-shadow: 0 4px 10px rgba(0,0,0,0.15); border-color: var(--yellow); }
.journal-card:hover .journal-icon { background: var(--navy); }
.journal-icon svg { width: 24px; height: 24px; fill: var(--navy); transition: var(--transition); }
.journal-card:hover .journal-icon svg { fill: var(--yellow); }
.journal-info h3 { font-size: 1rem; color: var(--navy); margin-bottom: 6px; font-weight: 700; transition: var(--transition); }
.journal-card:hover .journal-info h3 { color: var(--yellow-dark); }
.journal-info p { font-size: 0.85rem; color: var(--mid-gray); margin: 0; }


/* === Footer === */
.site-footer { background: linear-gradient(180deg, var(--navy) 0%, var(--navy-dark) 100%); color: rgba(255,255,255,0.7); padding: 50px 0 0; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding-bottom: 40px; }
.footer-col h4 { color: var(--yellow); font-size: 0.9rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--yellow); }
.footer-col p { font-size: 0.85rem; line-height: 1.7; margin-bottom: 8px; }
.footer-col a { display: block; padding: 4px 0; font-size: 0.85rem; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-col a:hover { color: var(--yellow); padding-left: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.4); }

/* === Committee List === */
.committee-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0;
}
.committee-member {
  background: var(--light-gray);
  border: 1px solid var(--gray);
  border-left: 4px solid var(--yellow);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: var(--transition);
}
.committee-member:hover {
  border-left-color: var(--navy);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.member-title {
  font-size: 0.75rem;
  color: var(--mid-gray);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}
.member-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}
.member-affiliation {
  font-size: 0.82rem;
  color: #666;
  display: flex;
  align-items: center;
  gap: 4px;
}
.member-affiliation::before {
  content: '🏛️';
  font-size: 0.7rem;
}
@media (max-width: 768px) {
  .committee-list { grid-template-columns: 1fr; }
}

/* === Footer Organizers === */
.footer-organizers .organizer-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition);
}
.footer-organizers .organizer-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--yellow);
}
.organizer-logo {
  width: 60px;
  height: 60px;
  object-fit: contain;
  background: white;
  border-radius: 6px;
  padding: 4px;
  flex-shrink: 0;
}
.organizer-item p {
  margin-bottom: 2px !important;
  font-size: 0.85rem;
}
.organizer-role {
  color: var(--yellow) !important;
  font-weight: 600;
  font-size: 0.75rem !important;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* === Animations === */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-15px); } to { opacity: 1; transform: translateY(0); } }

/* === Map & Venue === */
.map-container { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); margin: 20px 0; }
.map-container iframe { width: 100%; height: 350px; border: none; }
.venue-info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 20px 0; }
.venue-info-card { background: var(--light-gray); border-radius: var(--radius); padding: 20px; display: flex; gap: 14px; align-items: flex-start; border: 1px solid var(--gray); transition: var(--transition); }
.venue-info-card:hover { border-color: var(--yellow); }
.venue-info-card svg { width: 24px; height: 24px; fill: var(--yellow-dark); flex-shrink: 0; margin-top: 2px; }
.venue-info-card h4 { font-size: 0.9rem; color: var(--navy); margin-bottom: 4px; }
.venue-info-card p { font-size: 0.85rem; color: #666; margin: 0; }

/* === Schedule === */
.schedule-day { margin-bottom: 30px; }
.schedule-day h3 { background: var(--navy); color: var(--white); padding: 12px 20px; border-radius: var(--radius) var(--radius) 0 0; font-size: 1rem; }
.schedule-item { display: grid; grid-template-columns: 120px 1fr; border-bottom: 1px solid var(--light-gray); transition: var(--transition); }
.schedule-item:hover { background: rgba(255,204,0,0.05); }
.schedule-time { padding: 14px 16px; font-weight: 600; font-size: 0.85rem; color: var(--navy); background: var(--light-gray); border-right: 3px solid var(--yellow); }
.schedule-detail { padding: 14px 16px; }
.schedule-detail h4 { font-size: 0.9rem; color: var(--dark-gray); margin-bottom: 2px; }
.schedule-detail p { font-size: 0.82rem; color: var(--mid-gray); margin: 0; }

/* Nav brand mobile */
.nav-brand { color: var(--yellow); font-weight: 700; font-size: 1rem; letter-spacing: 1px; }
@media (min-width: 769px) { .nav-brand { display: none; } }

/* === Utility === */
.text-center { text-align: center; }
.text-navy { color: var(--navy); }
.text-yellow { color: var(--yellow); }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }

/* === Responsive === */
@media (max-width: 992px) {
  .main-layout { grid-template-columns: 240px 1fr; gap: 20px; }
  .header-content h1 { font-size: 2.2rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .scope-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .top-bar { display: none; }
  .hamburger { display: block; }
  .main-nav .container { justify-content: space-between; padding: 6px 20px; }
  .nav-links { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background: var(--navy-dark); flex-direction: column; align-items: center; justify-content: center; gap: 0; z-index: 1005; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.1rem; padding: 16px 30px; width: 100%; text-align: center; }
  .main-layout { grid-template-columns: 1fr; padding: 20px 0; }
  .sidebar { position: static; order: -1; }
  .content-area { padding: 24px; }
  .content-section h2 { font-size: 1.6rem; }
  .header-content { padding: 35px 15px 30px; }
  .header-content h1 { font-size: 1.7rem; }
  .header-logo-left, .header-logo-right { width: 70px; }
  .header-logo-left img, .header-logo-right img { max-height: 60px; max-width: 65px; }
  .countdown-wrapper { gap: 10px; flex-wrap: wrap; }
  .countdown-item { min-width: 70px; padding: 14px 16px; }
  .countdown-number { font-size: 1.6rem; }
  .quick-links { grid-template-columns: 1fr; }
  .payment-grid { grid-template-columns: 1fr; }
  .journals-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 25px; }
  .dates-table { font-size: 0.85rem; }
  .dates-table thead th, .dates-table tbody td { padding: 10px 12px; }
  .scope-grid { grid-template-columns: 1fr; }
  .info-box { padding: 20px; }
}

@media (max-width: 480px) {
  .header-content h1 { font-size: 1.4rem; }
  .header-subtitle { font-size: 0.95rem; }
  .content-area { padding: 18px; }
}