/* Gene-Brain Central Hub — Theme
   Palette: Pastel base + deep purple/blue/green accents, academic tone
*/

:root {
  /* Base colors */
  --bg-primary: #fafafe;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  
  /* Accent colors - deep tones */
  --purple-deep: #5b4b8a;
  --purple-mid: #7c6bae;
  --purple-light: #ebe8f5;
  
  --blue-deep: #2d5a7b;
  --blue-mid: #4a7fa8;
  --blue-light: #e8f2f7;
  
  --green-deep: #2d6a4f;
  --green-mid: #40916c;
  --green-light: #e8f4ef;
  
  /* Accent highlight */
  --accent-coral: #e07a5f;
  --accent-gold: #d4a574;
  
  /* Text */
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a68;
  --text-muted: #8e8ea8;
  
  /* Borders & dividers */
  --border-light: #eaeaf2;
  --border-medium: #d6d6e5;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(91, 75, 138, 0.06);
  --shadow-md: 0 4px 16px rgba(91, 75, 138, 0.1);
  --shadow-lg: 0 8px 32px rgba(91, 75, 138, 0.12);
  
  /* Typography */
  --font-sans: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Navigation */
.nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--purple-deep);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  letter-spacing: -0.02em;
}

.nav-brand::before {
  content: "🧬";
  font-size: 1.375rem;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.875rem;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.nav-link:hover {
  background: var(--purple-light);
  color: var(--purple-deep);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--purple-deep) 0%, var(--blue-deep) 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(91, 75, 138, 0.25);
}

/* Main container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

/* Page header */
.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.6;
}

/* Refresh controls */
.refresh-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  padding: 0.875rem 1.25rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem;
  background: linear-gradient(135deg, var(--purple-deep) 0%, var(--blue-deep) 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(91, 75, 138, 0.2);
}

.refresh-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(91, 75, 138, 0.3);
}

.refresh-btn:active {
  transform: translateY(0);
}

.refresh-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.refresh-btn::before {
  content: "↻";
  font-size: 1.125rem;
}

.last-updated {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
}

.auto-refresh-note {
  margin-left: auto;
  color: var(--blue-deep);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.375rem 0.75rem;
  background: var(--blue-light);
  border-radius: 6px;
  border: 1px solid rgba(45, 90, 123, 0.1);
}

/* Cards grid (Commits page) */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

/* Commit card */
.commit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 300px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.commit-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.commit-card-header {
  padding: 1.125rem 1.375rem;
  background: linear-gradient(135deg, var(--purple-light) 0%, var(--blue-light) 100%);
  border-bottom: 1px solid var(--border-light);
}

.commit-card-member {
  font-weight: 700;
  color: var(--purple-deep);
  font-size: 1.0625rem;
  margin-bottom: 0.375rem;
  letter-spacing: -0.01em;
}

.commit-card-repo {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  font-weight: 500;
}

.commit-card-body {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.commit-card-body::-webkit-scrollbar {
  width: 4px;
}

.commit-card-body::-webkit-scrollbar-track {
  background: transparent;
}

.commit-card-body::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 2px;
}

.commit-card-body::-webkit-scrollbar-thumb:hover {
  background: var(--purple-mid);
}

.commit-item {
  padding: 0.75rem 1.375rem;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  transition: background 0.15s ease;
}

.commit-item:hover {
  background: var(--bg-primary);
}

.commit-item:last-child {
  border-bottom: none;
}

.commit-sha {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--blue-deep);
  background: var(--blue-light);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  flex-shrink: 0;
  border: 1px solid rgba(45, 90, 123, 0.1);
}

.commit-message {
  font-size: 0.875rem;
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.5;
}

.commit-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
  font-weight: 500;
}

.commit-card-empty {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Subtle accent borders */
.cards-grid > .commit-card:nth-child(4n+1) {
  border-top: 2px solid var(--purple-mid);
}

.cards-grid > .commit-card:nth-child(4n+2) {
  border-top: 2px solid var(--blue-mid);
}

.cards-grid > .commit-card:nth-child(4n+3) {
  border-top: 2px solid var(--green-mid);
}

.cards-grid > .commit-card:nth-child(4n) {
  border-top: 2px solid var(--accent-gold);
}

/* Daily logs list */
.daily-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.daily-project {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.daily-project:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.daily-project-header {
  padding: 1.125rem 1.5rem;
  background: linear-gradient(135deg, var(--green-light) 0%, var(--blue-light) 100%);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.daily-project-name {
  font-weight: 700;
  color: var(--green-deep);
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}

.daily-project-member {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.daily-dates {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  padding: 1.25rem 1.5rem;
}

.daily-date-link {
  display: inline-block;
  padding: 0.5rem 0.875rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: var(--font-mono);
  font-weight: 600;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.daily-date-link:hover {
  background: linear-gradient(135deg, var(--purple-light) 0%, var(--blue-light) 100%);
  border-color: var(--purple-mid);
  color: var(--purple-deep);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(91, 75, 138, 0.15);
}

/* Log viewer */
.log-viewer {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  max-width: 850px;
  margin: 0 auto;
}

.log-viewer h1 {
  color: var(--text-primary);
  font-size: 2rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.log-viewer h2 {
  color: var(--purple-deep);
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.875rem;
  letter-spacing: -0.01em;
}

.log-viewer h3 {
  color: var(--blue-deep);
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.log-viewer h1:first-child {
  margin-top: 0;
}

.log-viewer p {
  margin-bottom: 1.125rem;
  line-height: 1.75;
  color: var(--text-primary);
  font-size: 1rem;
}

.log-viewer ul, .log-viewer ol {
  margin-bottom: 1.125rem;
  padding-left: 1.75rem;
  line-height: 1.75;
}

.log-viewer li {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.log-viewer code {
  font-family: var(--font-mono);
  background: var(--purple-light);
  color: var(--purple-deep);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.9em;
  font-weight: 600;
  border: 1px solid rgba(91, 75, 138, 0.1);
}

.log-viewer pre {
  background: var(--text-primary);
  color: #f0f0f0;
  padding: 1.25rem;
  border-radius: 10px;
  overflow-x: auto;
  margin-bottom: 1.25rem;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1);
}

.log-viewer pre code {
  background: none;
  padding: 0;
  border: none;
  color: inherit;
  font-weight: 400;
}

.log-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: var(--spacing-xl);
  color: var(--purple-deep);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.log-back-link:hover {
  background: var(--purple-light);
  transform: translateX(-4px);
}

.log-back-link::before {
  content: "←";
  font-size: 1.125rem;
}

/* Home page specifics */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--purple-light) 0%, var(--blue-light) 50%, var(--green-light) 100%);
  border-radius: 20px;
  margin-bottom: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--purple-deep) 0%, var(--blue-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 1.5rem auto 0;
  line-height: 1.75;
  font-weight: 400;
}

.overview-image {
  width: 100%;
  max-width: 1000px;
  margin: var(--spacing-2xl) auto;
  display: block;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.team-table-section {
  margin-top: var(--spacing-2xl);
}

.team-table-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

.team-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-card);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.team-table th,
.team-table td {
  padding: 1.125rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.team-table th {
  background: linear-gradient(135deg, var(--purple-deep) 0%, var(--blue-deep) 100%);
  color: white;
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
}

.team-table tbody tr {
  transition: background 0.15s ease;
}

.team-table tr:last-child td {
  border-bottom: none;
}

.team-table tbody tr:hover {
  background: linear-gradient(90deg, var(--purple-light) 0%, transparent 100%);
}

.team-table td:first-child {
  font-weight: 600;
  color: var(--purple-deep);
  font-size: 0.9375rem;
}

.team-table td {
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 0.9375rem;
}

.team-table td:nth-child(2) {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Loading state */
.loading {
  text-align: center;
  padding: 4rem;
  color: var(--text-muted);
  font-weight: 500;
}

.loading::after {
  content: "";
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--border-light);
  border-top-color: var(--purple-deep);
  border-radius: 50%;
  animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  margin-left: 1rem;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 5rem 2rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1.25rem;
  opacity: 0.6;
}

.empty-state-text {
  font-size: 1.0625rem;
  line-height: 1.6;
  font-weight: 500;
}

/* Footer */
.footer {
  margin-top: 5rem;
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  border-top: 1px solid var(--border-light);
  background: linear-gradient(to bottom, transparent 0%, var(--bg-primary) 100%);
}