/* ===== Submission Page Styles - Light Theme ===== */

.submission-header {
  padding: 140px 0 60px;
  background: linear-gradient(180deg, var(--bg-light-alt) 0%, var(--bg-light) 100%);
}

.submission-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.submission-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

.submission-main {
  padding: 2rem 1rem;
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 1200px) {
  .submission-main {
    margin-left: 5%;
    margin-right: 280px;
  }
}

/* ===== Fixed Sidebar TOC ===== */
.toc-sidebar-fixed {
  position: fixed;
  top: 100px;
  right: calc((100vw - 1400px) / 2 + 20px);
  width: 220px;
  z-index: 100;
}

@media (max-width: 1600px) {
  .toc-sidebar-fixed {
    right: 20px;
  }
}

.toc-sidebar {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}

.toc-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  margin-bottom: 0.25rem;
}

.toc-link {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
}

.toc-link:hover {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
}

.toc-link.active {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
  border-left-color: var(--primary);
  font-weight: 500;
}

/* Content Sections */
.content-section {
  margin-bottom: 4rem;
}

.content-section h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--primary);
}

.content-section h2 i {
  font-size: 1.5rem;
}

/* Step Cards */
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  height: 100%;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.step-card:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1rem;
  color: white;
}

.step-card h4 {
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.step-card p {
  color: var(--text-secondary);
  margin: 0;
}

/* Method Cards */
.method-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.method-card h4 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.method-card ol, 
.method-card ul {
  padding-left: 1.5rem;
  margin: 0;
}

.method-card li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
}

.method-card code {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* Info Box */
.info-box {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.info-box.important {
  border: 1px solid var(--long-term-color);
  background: rgba(217, 119, 6, 0.05);
}

.info-box h5 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--long-term-color);
}

.info-box ul {
  padding-left: 1.5rem;
  margin: 0;
}

.info-box li {
  padding: 0.25rem 0;
  color: var(--text-secondary);
}

/* Code Block */
.code-block {
  background: #1e293b;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1rem 0;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #e2e8f0;
  white-space: pre;
}

/* Process Timeline */
.process-timeline {
  position: relative;
  padding-left: 2rem;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.process-step {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.process-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
  color: var(--primary);
  background: var(--bg-light);
  position: relative;
  z-index: 1;
}

.process-content h5 {
  margin-bottom: 0.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.process-content p {
  color: var(--text-secondary);
  margin: 0;
}

/* Accordion */
.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
  border-radius: 12px !important;
  overflow: hidden;
}

.accordion-button {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  padding: 1.25rem;
}

.accordion-button:not(.collapsed) {
  background: rgba(99, 102, 241, 0.05);
  color: var(--primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--border-color);
}

.accordion-body {
  padding: 1.25rem;
  color: var(--text-secondary);
}

.accordion-body ul, 
.accordion-body ol {
  padding-left: 1.5rem;
  margin-top: 0.5rem;
  margin-bottom: 0;
}

.accordion-body li {
  padding: 0.25rem 0;
}

/* Contact Buttons */
.contact-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
  .submission-main {
    padding: 1rem;
  }
  
  .content-section h2 {
    font-size: 1.5rem;
  }
  
  .code-block {
    padding: 1rem;
  }
  
  .code-block code {
    font-size: 0.75rem;
  }
}