:root {
  color-scheme: light;
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #666;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --font-sans: "Source Sans 3", system-ui, sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --radius: 6px;
  --radius-lg: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --sidebar-width: 220px;
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-accent: #60a5fa;
  --color-accent-hover: #3b82f6;
  --color-border: #334155;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  color-scheme: dark;
}

.theme-toggle {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 150;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  font-size: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: background 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  background: var(--color-border);
}

.theme-icon-dark,
.theme-icon-light {
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-icon-dark svg,
.theme-icon-light svg {
  width: 1.25rem;
  height: 1.25rem;
}

.theme-icon-dark {
  display: none;
}

.theme-icon-light {
  display: flex;
}

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

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

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  display: flex;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("assets/hero-watermark.svg") center / cover no-repeat;
  opacity: 0.06;
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] body::before {
  background-image: url("assets/hero-watermark-dark.svg");
}

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  padding: var(--space-lg) 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.04);
  transition: width 0.2s ease, box-shadow 0.2s ease;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar[data-collapsed="true"] {
  width: var(--sidebar-width);
  padding: var(--space-lg) 0;
}

.sidebar-toggle {
  flex-shrink: 0;
  width: 100%;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  padding: 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.sidebar-toggle:hover {
  color: var(--color-accent);
  background: rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}

.sidebar-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-toggle-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.sidebar-toggle-expanded {
  display: none;
}

.sidebar-toggle-collapsed {
  display: block;
}

.sidebar[data-collapsed="false"] .sidebar-toggle-expanded {
  display: block;
}

.sidebar[data-collapsed="false"] .sidebar-toggle-collapsed {
  display: none;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-md);
  flex: 1;
}

.nav-item {
  margin-bottom: var(--space-sm);
}

.nav-top-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xs);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}

.nav-top-link:hover {
  color: var(--color-accent);
  background: rgba(37, 99, 235, 0.08);
}

[data-theme="dark"] .nav-top-link:hover {
  background: rgba(96, 165, 250, 0.12);
}

.nav-item--parent .nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.nav-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

.nav-icon svg {
  width: 100%;
  height: 100%;
}

.nav-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-sublist {
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding-left: 28px;
  border-left: 2px solid var(--color-border);
}

.nav-sublist li {
  margin-bottom: var(--space-xs);
}

.nav-sublist a,
.nav-sublist .nav-active {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xs);
  font-size: 0.9rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.nav-sublist a {
  color: var(--color-text-muted);
}

.nav-sublist a:hover {
  color: var(--color-accent);
  background: rgba(37, 99, 235, 0.08);
}

[data-theme="dark"] .nav-sublist a:hover {
  background: rgba(96, 165, 250, 0.12);
}

.nav-sublist .nav-active {
  color: var(--color-text-muted);
  font-weight: 500;
  cursor: default;
}

/* Collapsed state */
.sidebar[data-collapsed="true"] .nav-top-link {
  justify-content: center;
  padding: var(--space-sm);
}

.sidebar[data-collapsed="true"] .nav-text {
  width: 0;
  overflow: hidden;
  opacity: 0;
  white-space: nowrap;
}

.sidebar[data-collapsed="true"] .nav-item--parent .nav-label {
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.sidebar[data-collapsed="true"] .nav-sublist {
  position: absolute;
  left: calc(100% + 4px);
  top: 0;
  margin: 0;
  padding: var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 4px 4px 12px rgba(0, 0, 0, 0.1);
  min-width: 140px;
  display: none;
}

.sidebar[data-collapsed="true"] .nav-item--parent {
  position: relative;
}

.sidebar[data-collapsed="true"] .nav-item--parent .nav-label {
  padding: var(--space-sm);
  border-radius: var(--radius);
  transition: background 0.15s;
}

.sidebar[data-collapsed="true"] .nav-item--parent .nav-label:hover {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .sidebar[data-collapsed="true"] .nav-item--parent .nav-label:hover {
  background: rgba(255, 255, 255, 0.06);
}

.sidebar[data-collapsed="true"] .nav-item--parent:hover .nav-sublist {
  display: block;
}

.sidebar[data-collapsed="true"] .nav-sublist a {
  padding: var(--space-sm) var(--space-md);
}

.view {
  display: block;
}

.view--hidden {
  display: none;
}

.chat-widget--hidden {
  display: none;
}

.arch-container {
  max-width: 52rem;
  margin: 0 auto;
  padding: var(--space-xl);
}

.arch-back {
  margin-bottom: var(--space-lg);
}

.arch-back a {
  color: var(--color-accent);
  text-decoration: none;
}

.arch-back a:hover {
  text-decoration: underline;
}

.arch-content {
  line-height: 1.6;
}

.arch-content.loading {
  color: var(--color-text-muted);
}

.arch-content h1 {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.arch-content h2 {
  font-size: 1.25rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.arch-content h3 {
  font-size: 1.1rem;
  margin-top: var(--space-lg);
}

.arch-content pre,
.arch-content code {
  font-family: ui-monospace, monospace;
  font-size: 0.875em;
}

.arch-content pre {
  background: var(--color-surface);
  padding: var(--space-md);
  border-radius: var(--radius);
  overflow-x: auto;
}

.arch-content table {
  border-collapse: collapse;
  width: 100%;
}

.arch-content th,
.arch-content td {
  border: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md);
  text-align: left;
}

.arch-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-xl) 0;
}

.nav-top-link.nav-active,
.nav-sublist a.nav-active {
  color: var(--color-text-muted);
  font-weight: 500;
  pointer-events: none;
}

.container {
  flex: 1;
  max-width: 720px;
  margin: 0 auto;
  margin-left: var(--sidebar-width);
  padding: var(--space-2xl) var(--space-lg);
  transition: margin-left 0.2s ease;
}

@media (max-width: 768px) {
  .sidebar {
    width: var(--sidebar-width);
  }
  .sidebar[data-collapsed="true"] {
    width: var(--sidebar-width);
  }
  .container {
    margin-left: var(--sidebar-width);
  }
}

.hero {
  margin-bottom: var(--space-2xl);
  text-align: center;
}

.hero-title-block {
  padding: var(--space-lg) 0;
}


.hero-icon {
  display: block;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius);
  object-fit: contain;
  width: 64px;
  height: 36px;
}

.hero-icon-dark {
  display: none;
}

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

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

.hero h1 {
  margin: 0 0 var(--space-xs);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero .subtitle {
  margin: 0 0 var(--space-xs);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.summary {
  margin: 0 0 var(--space-lg);
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.contact {
  margin-bottom: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.contact a {
  color: var(--color-accent);
  text-decoration: none;
}

.contact a:hover {
  text-decoration: underline;
}

.job-match-card {
  margin-bottom: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.job-match-card h2 {
  margin: 0 0 var(--space-sm);
  font-size: 1.25rem;
  font-weight: 600;
}

.job-match-desc {
  margin: 0 0 var(--space-md);
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.job-match-card textarea {
  width: 100%;
  padding: var(--space-md);
  font-family: inherit;
  font-size: 0.9rem;
  line-height: 1.5;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  resize: vertical;
  margin-bottom: var(--space-md);
}

.job-match-card textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.job-match-btn {
  padding: var(--space-sm) var(--space-lg);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: white;
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
}

.job-match-btn:hover {
  background: var(--color-accent-hover);
}

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

.job-match-result {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.job-match-result .match-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.job-match-result .match-strong {
  background: #dcfce7;
  color: #166534;
}

.job-match-result .match-moderate {
  background: #fef9c3;
  color: #854d0e;
}

.job-match-result .match-weak {
  background: #fee2e2;
  color: #991b1b;
}

[data-theme="dark"] .job-match-result .match-strong {
  background: #14532d;
  color: #86efac;
}

[data-theme="dark"] .job-match-result .match-moderate {
  background: #713f12;
  color: #fef08a;
}

[data-theme="dark"] .job-match-result .match-weak {
  background: #7f1d1d;
  color: #fecaca;
}

.job-match-result .match-summary {
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.job-match-result .match-list-title {
  margin: var(--space-sm) 0 var(--space-xs);
  font-size: 0.9rem;
}

.job-match-result .match-list {
  margin: 0 0 var(--space-sm);
  padding-left: 1.25rem;
}

.job-match-result .match-list li {
  margin-bottom: var(--space-xs);
}

.job-match-result .match-recommendation {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  font-weight: 500;
}

.chat-widget {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 100;
}

.chat-panel {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 340px;
  max-height: 420px;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.chat-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  min-height: 120px;
  max-height: 280px;
}

.chat-message {
  margin-bottom: var(--space-md);
}

.chat-message.user {
  text-align: right;
}

.chat-message .bubble {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  font-size: 0.9rem;
  max-width: 90%;
}

.chat-message.user .bubble {
  background: var(--color-accent);
  color: white;
}

.chat-message.assistant .bubble {
  background: var(--color-bg);
  color: var(--color-text);
}

.chat-form {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.chat-form input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.chat-form input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.chat-form button {
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: white;
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

.chat-form button:hover {
  background: var(--color-accent-hover);
}

.loading {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}