/* Base Reset & Variables - Dark Mode Always */
:root {
  --color-bg: #0f0f1a;
  --color-text: #f3f4f6;
  --color-text-secondary: #9ca3af;
  --color-accent: #60a5fa;
  --color-border: #374151;
  --color-card-bg: #1f1f2e;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

/* Header */
.changelog-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
}

.changelog-header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.changelog-header p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Tabs */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.tab {
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
  margin-bottom: -1px;
}

.tab:hover {
  color: var(--color-text);
}

.tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Mobile Tabs */
@media (max-width: 520px) {
  body {
    padding: 1rem;
  }

  .tabs {
    justify-content: center;
  }

  .tab {
    padding: 0.6rem 0.75rem;
    font-size: 0.8rem;
    flex: 1 1 auto;
    text-align: center;
  }
}

/* Feature Card (for In Progress & Upcoming) */
.feature-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  animation: fadeIn 0.4s ease-out;
}

.feature-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.feature-card-description {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.feature-card-date {
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: 0.75rem;
}

/* Status Badge */
.status-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.status-badge.in-progress {
  background: #78350f;
  color: #fef3c7;
}

.status-badge.upcoming {
  background: #1e3a8a;
  color: #dbeafe;
}

/* Timeline */
.timeline {
  position: relative;
}

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

/* Update Entry */
.update-entry {
  position: relative;
  padding-left: 2rem;
  padding-bottom: 2.5rem;
  animation: fadeIn 0.4s ease-out;
}

.update-entry:last-child {
  padding-bottom: 0;
}

.update-entry::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
}

.update-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.update-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.update-description {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Admin Styles */
.admin-container {
  max-width: 1000px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.admin-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.admin-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

@media (max-width: 768px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
}

/* Form Styles */
.form-section {
  background: var(--color-card-bg);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.form-section h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background: var(--color-card-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
}

.btn-danger {
  background: #ef4444;
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

.btn-group {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Entry List in Admin */
.entry-list {
  margin-top: 1rem;
}

.entry-item {
  background: var(--color-bg);
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  margin-bottom: 0.75rem;
}

.entry-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.entry-item-date {
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
}

.entry-item-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.entry-item-description {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.entry-actions {
  display: flex;
  gap: 0.5rem;
}

/* Export Section */
.export-section {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.export-section h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.export-textarea {
  width: 100%;
  min-height: 150px;
  padding: 0.75rem;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.8rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  resize: vertical;
}

/* Preview Section */
.preview-section h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary);
}

.empty-state p {
  font-size: 0.95rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--color-text);
  color: var(--color-bg);
  padding: 0.75rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Known Issues Styles */
.issue-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  animation: fadeIn 0.4s ease-out;
}

.issue-card.issue-resolved {
  opacity: 0.7;
}

.issue-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.issue-card-description {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.issue-dates {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.issue-date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.issue-date.resolved-date {
  color: #10b981;
}

.status-badge.researching {
  background: #78350f;
  color: #fef3c7;
}

.status-badge.resolved {
  background: #065f46;
  color: #d1fae5;
}

.no-issues {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-secondary);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.no-issues p {
  font-size: 0.95rem;
}

.section-subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}