:root {
  --bg: #0b0d10;
  --card-bg: #1a1e29;
  --border-color: #2a2f3e;
  --text-primary: #f0f2f5;
  --text-secondary: #8b92a8;
  --accent: #00d4aa;
  --accent-secondary: #d946ef;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --font-body: Inter, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, Menlo, monospace;
  --radius-card: 12px;
  --radius-button: 8px;
  --max-width: 1280px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

header {
  border-bottom: 1px solid var(--border-color);
  background: var(--card-bg);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.search-bar {
  flex: 1;
  display: flex;
  gap: 0.5rem;
  min-width: 240px;
}

.search-bar input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.search-bar button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius-button);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.main-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
}

.main-nav a {
  display: block;
  padding: 0.75rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  background: var(--bg);
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  margin: 0 auto;
}

.mock-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-left: auto;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(280px, 80vw);
  height: 100vh;
  background: var(--card-bg);
  border-left: 1px solid var(--border-color);
  transform: translateX(100%);
  transition: transform 0.2s ease;
  z-index: 200;
  padding: 1rem;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 3rem;
}

.mobile-drawer-nav a {
  display: block;
  padding: 0.75rem;
  border-radius: var(--radius-button);
  color: var(--text-secondary);
  font-weight: 500;
}

.mobile-drawer-nav a:hover {
  background: var(--bg);
  color: var(--text-primary);
  text-decoration: none;
}

.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  z-index: 199;
}

.mobile-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

.page-header {
  margin-bottom: 1.5rem;
}

.page-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
}

.page-header .subtitle {
  margin: 0;
  color: var(--text-secondary);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.card h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--radius-button);
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
}

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

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

.btn:hover {
  opacity: 0.9;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  background: var(--bg);
  color: var(--text-primary);
  font-family: inherit;
}

.form-textarea {
  min-height: 160px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

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

.data-table th {
  color: var(--text-secondary);
  font-weight: 600;
}

footer {
  border-top: 1px solid var(--border-color);
  background: var(--card-bg);
  margin-top: 2rem;
  padding: 1.5rem 1rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.source-viewer {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.source-viewer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.source-viewer-body {
  display: flex;
  overflow: auto;
  background: #0d1117;
}

.source-gutter {
  margin: 0;
  padding: 0.75rem 0.5rem 0.75rem 0.75rem;
  background: var(--bg);
  color: var(--text-secondary);
  text-align: right;
  user-select: none;
  border-right: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
}

.source-code {
  margin: 0;
  padding: 0.75rem 1rem;
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  min-width: 0;
}

.source-code code {
  font-family: inherit;
}

.token.keyword { color: #ff7b72; }
.token.type { color: #79c0ff; }
.token.string { color: #a5d6ff; }
.token.number { color: #79c0ff; }
.token.comment { color: #8b949e; font-style: italic; }

.abi-function-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  padding: 0.75rem;
  margin-bottom: 0.75rem;
}

.abi-function-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.abi-function-name {
  font-family: var(--font-mono);
  font-weight: 600;
}

.abi-tag {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.abi-tag-read {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.abi-tag-write {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
}

.abi-tag-payable {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.events-toolbar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.event-row-expand {
  cursor: pointer;
}

.event-row-details {
  background: var(--bg);
}

.event-row-details td {
  padding: 0;
}

.event-details-inner {
  padding: 1rem;
}

.btn-small {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
  }

  .main-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .search-bar {
    width: auto;
    flex: 1;
  }
}

/* Mobile-first responsive adjustments */
@media (max-width: 768px) {
  .page-header {
    padding: 1rem;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }

  .card {
    padding: 1rem;
  }

  .contract-tabs,
  .verify-tabs {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .contract-tab,
  .verify-tab {
    padding: 0.5rem;
    font-size: 0.85rem;
  }

  .data-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .data-table {
    min-width: 600px;
  }

  .btn {
    width: 100%;
    margin-bottom: 0.5rem;
  }

  .btn + .btn {
    margin-left: 0;
  }

  .grid-2,
  .grid-auto-160,
  .grid-auto-180,
  .grid-auto-220,
  .grid-auto-240 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0.75rem;
  }

  .logo {
    font-size: 1.1rem;
  }

  .main-nav {
    gap: 0.75rem;
    font-size: 0.85rem;
  }

  .container {
    padding: 0 0.75rem;
  }

  .page-header h1 {
    font-size: 1.25rem;
  }

  .subtitle {
    font-size: 0.85rem;
  }
}