/* CSS Reset and Variables */
:root {
  --bg-primary: #fbfaf7;
  --bg-secondary: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --text-primary: #191919;
  --text-secondary: #666560;
  --accent-blue: #1d4ed8;
  --accent-purple: #7c3aed;
  --gemini-gradient: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 50%, #db2777 100%);
  --border-color: #e5e3dd;
  --border-glow: rgba(124, 58, 237, 0.08);
  
  --console-bg: #f7f6f0;
  --console-header-bg: #efede8;
  --console-input-bg: #ffffff;
  --console-result-bg: #ffffff;
  --console-result-color: #191919;
  --section-bg: #f7f6f0;
  --card-bg: #ffffff;
  
  --font-serif: "Georgia", Times, serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Courier New", Courier, monospace;
}

[data-theme="dark"] {
  --bg-primary: #121211;
  --bg-secondary: #1a1a19;
  --bg-glass: rgba(26, 26, 25, 0.7);
  --text-primary: #f5f4f0;
  --text-secondary: #b3b2ad;
  --accent-blue: #38bdf8;
  --accent-purple: #a855f7;
  --gemini-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #d946ef 100%);
  --border-color: #2b2b29;
  --border-glow: rgba(139, 92, 246, 0.15);
  
  --console-bg: #1a1a19;
  --console-header-bg: #161615;
  --console-input-bg: rgba(0, 0, 0, 0.2);
  --console-result-bg: #1a1a19;
  --console-result-color: #f5f4f0;
  --section-bg: rgba(26, 26, 25, 0.3);
  --card-bg: #1a1a19;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
header {
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem 0;
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(251, 250, 247, 0.85);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gemini-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  width: 24px;
  height: 24px;
  background: var(--gemini-gradient);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: 2rem;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  padding: 6rem 0 4rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(0,0,0,0) 70%);
  filter: blur(40px);
  z-index: -1;
}

.hero-subtitle {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--accent-blue);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.hero p {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

/* Interactive Sourcing Lab */
.sourcing-lab {
  padding: 4rem 0;
}

.lab-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin-bottom: 1rem;
  text-align: center;
}

.lab-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.lab-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2rem;
}

/* Sidebar Menu */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.lab-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-align: left;
  padding: 1.25rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.lab-btn:hover {
  border-color: var(--accent-purple);
  color: var(--text-primary);
  background-color: rgba(0, 0, 0, 0.02);
}

.lab-btn.active {
  border-color: var(--accent-blue);
  color: var(--text-primary);
  background: linear-gradient(90deg, rgba(29, 78, 216, 0.05) 0%, rgba(0,0,0,0) 100%);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.02);
}

.lab-btn-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.lab-btn-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Console Window */
.console-window {
  background-color: var(--console-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 750px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
  position: relative;
}

.console-header {
  background-color: var(--console-header-bg);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.console-dots {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.console-title {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.console-body {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
  font-family: var(--font-sans);
}

.query-input-block {
  margin-bottom: 2rem;
}

.query-prompt-label {
  font-family: var(--font-mono);
  color: var(--accent-blue);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.query-input-box {
  background-color: var(--console-input-bg);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-primary);
  min-height: 60px;
  display: flex;
  align-items: center;
}

.console-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 2rem;
}

.run-btn {
  background: var(--gemini-gradient);
  border: none;
  color: #fff;
  padding: 0.75rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.2s;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.run-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.run-btn:active {
  transform: translateY(1px);
}

.run-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Terminal Outputs */
.terminal-output {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: none;
}

.status-log {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-purple);
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.status-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.result-markdown {
  background-color: var(--console-result-bg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 8px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--console-result-color);
  overflow-x: auto;
}

.result-markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.result-markdown th, .result-markdown td {
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  text-align: left;
}

.result-markdown th {
  background-color: var(--section-bg);
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.result-markdown h3 {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  margin-bottom: 1rem;
  margin-top: 1.5rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.result-markdown p {
  margin-bottom: 1rem;
}

.result-markdown ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

/* Info Grid Section */
.info-section {
  padding: 6rem 0;
  border-top: 1px solid var(--border-color);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.info-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 10px;
  transition: all 0.3s;
}

.info-card:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
}

.info-card h4 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 2rem;
  transition: all 0.3s;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-purple);
  background-color: var(--console-bg);
}

.sun-icon {
  display: none;
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.moon-icon {
  display: block;
  width: 18px;
  height: 18px;
  fill: currentColor;
}

[data-theme="dark"] .sun-icon {
  display: block;
}

[data-theme="dark"] .moon-icon {
  display: none;
}

/* Category Filters */
.filter-pill {
  background-color: var(--console-input-bg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.3s;
  font-family: var(--font-sans);
}

.filter-pill:hover, .filter-pill.active {
  background-color: var(--accent-purple);
  color: #ffffff;
  border-color: var(--accent-purple);
}

/* Sidebar scrollbar styles */
.sidebar-scroll::-webkit-scrollbar {
  width: 6px;
}

.sidebar-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-scroll::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 10px;
}

/* Standalone command code block */
.code-block {
  background-color: var(--console-bg);
  color: var(--accent-purple);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
  overflow-x: auto;
  transition: all 0.3s;
}

/* Playbook section and matrix table theme overrides */
.playbook-section {
  background-color: var(--bg-primary) !important;
  transition: all 0.3s;
}

.case-study-card {
  background-color: var(--section-bg);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 12px;
  margin-bottom: 4rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.01);
  transition: all 0.3s;
}

.chat-bubble-user {
  background-color: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 8px;
  font-size: 1rem;
  max-width: 80%;
  font-family: var(--font-serif);
  transition: all 0.3s;
}

.chat-bubble-agent {
  background-color: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 8px;
  font-size: 0.95rem;
  max-width: 80%;
  line-height: 1.6;
  transition: all 0.3s;
}

.playbook-table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.3s;
}

.playbook-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.playbook-table thead tr {
  background-color: var(--section-bg);
  border-bottom: 1px solid var(--border-color);
}

.playbook-table th {
  padding: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-primary);
}

.playbook-table td {
  padding: 1rem;
  color: var(--text-primary);
}

.playbook-row-even {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  transition: all 0.3s;
}

.playbook-row-odd {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--card-bg);
  transition: all 0.3s;
}

.playbook-btn {
  background-color: var(--section-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.playbook-btn:hover {
  background-color: var(--accent-purple);
  color: #ffffff;
  border-color: var(--accent-purple);
}