:root {
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: "Space Grotesk", system-ui, sans-serif;
}

/* Dark theme (default) */
[data-theme="dark"] {
  --bg: #0a0a0a;
  --text: #e8e8e8;
  --text-muted: #a0a0a0;
  --glass-bg: rgba(20, 20, 20, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --card-bg: rgba(30, 30, 30, 0.6);
  --card-border: rgba(255, 255, 255, 0.08);
  --input-bg: rgba(40, 40, 40, 0.8);
  --tag-bg: rgba(99, 102, 241, 0.2);
  --tag-text: #a5b4fc;
  --mark-bg: rgba(251, 191, 36, 0.3);
}

/* Light theme */
[data-theme="light"] {
  --bg: #f5f5f7;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --card-bg: rgba(255, 255, 255, 0.6);
  --card-border: rgba(0, 0, 0, 0.08);
  --input-bg: rgba(255, 255, 255, 0.9);
  --tag-bg: rgba(99, 102, 241, 0.15);
  --tag-text: #4f46e5;
  --mark-bg: rgba(251, 191, 36, 0.4);
}

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

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: var(--transition);
  overflow-x: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* Logout button */
.logout-btn {
  position: fixed;
  top: 24px;
  right: 84px;
  z-index: 1000;
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: var(--glass-shadow);
  color: var(--text);
}

.logout-btn:hover {
  transform: scale(1.05);
  border-color: #ef4444;
  color: #ef4444;
}

/* Theme toggle button */
.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 1000;
  width: 48px;
  height: 48px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: var(--glass-shadow);
}

.theme-toggle:hover {
  transform: scale(1.05);
  border-color: var(--accent);
}

.sun-icon,
.moon-icon {
  position: absolute;
  transition: var(--transition);
}

[data-theme="dark"] .sun-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0);
}

[data-theme="dark"] .moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="light"] .sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="light"] .moon-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0);
}

/* Container */
.container {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  min-height: 100vh;
}

/* Search container - centered initially */
.search-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
  gap: 24px;
  transition: var(--transition);
}

.search-container.has-results {
  min-height: auto;
  padding: 60px 0 40px;
}

.brand-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

/* Glassmorphic search box */
.search-box {
  position: relative;
  width: 100%;
  max-width: 600px;
}

.search-box input {
  width: 100%;
  padding: 18px 56px 18px 24px;
  font-size: 1.05rem;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  transition: var(--transition);
  box-shadow: var(--glass-shadow);
  outline: none;
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 8px 32px 0 rgba(99, 102, 241, 0.2);
}

.search-icon {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.status-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  min-height: 24px;
}

/* Results section */
.results-section {
  margin-top: 40px;
  animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding: 0 4px;
}

.results-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

.results-list {
  display: grid;
  gap: 16px;
}

/* Result cards - glassmorphic */
.result-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 20px;
  display: grid;
  gap: 12px;
  transition: var(--transition);
  animation: fadeIn 0.5s ease both;
  max-width: 100%;
  overflow: hidden;
}

.result-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.result-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.result-card > p {
  color: var(--text-muted);
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Meta tags */
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  max-width: 100%;
}

.meta span {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 500;
  word-break: break-word;
  max-width: 100%;
}

/* Details/Summary */
details {
  border-top: 1px solid var(--card-border);
  padding-top: 12px;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  user-select: none;
}

summary:hover {
  color: var(--accent);
}

.key-values {
  display: grid;
  gap: 8px;
}

.key-values div {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: 12px;
  font-size: 0.9rem;
}

.key-values strong {
  color: var(--text);
  font-weight: 600;
  word-wrap: break-word;
}

.key-values span {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Buttons */
.btn-ghost {
  border: 1px solid var(--glass-border);
  padding: 10px 20px;
  border-radius: 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  font-family: inherit;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* Highlight */
mark {
  background: var(--mark-bg);
  color: var(--text);
  padding: 2px 4px;
  border-radius: 4px;
  font-weight: 500;
}

/* Mode tabs */
.mode-tabs {
  display: flex;
  gap: 8px;
  background: var(--input-bg);
  padding: 6px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  margin-bottom: 24px;
}

.mode-tab {
  flex: 1;
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

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

.mode-tab.active {
  background: var(--accent);
  color: white;
}

/* Mode content */
.mode-content {
  width: 100%;
  max-width: 600px;
}

/* Generate box */
.generate-box {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.generate-box label {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 8px;
  display: block;
  color: var(--text);
}

.generate-box label a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.85rem;
}

.generate-box label a:hover {
  text-decoration: underline;
}

.generate-box textarea {
  width: 100%;
  min-height: 150px;
  padding: 16px;
  font-size: 1rem;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: var(--input-bg);
  color: var(--text);
  font-family: inherit;
  resize: vertical;
  transition: var(--transition);
}

.generate-box textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.generate-box textarea::placeholder {
  color: var(--text-muted);
}

/* Configuration panel */
.config-panel {
  border: 1px solid var(--card-border);
  border-radius: 12px;
  background: var(--card-bg);
  overflow: hidden;
}

.config-toggle {
  width: 100%;
  padding: 14px 16px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.config-toggle:hover {
  color: var(--accent);
}

.config-toggle svg {
  transition: var(--transition);
}

.config-options {
  padding: 0 16px 16px;
  display: grid;
  gap: 16px;
}

.config-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-group label {
  font-weight: 500;
  font-size: 0.9rem;
  margin: 0;
}

.config-group input[type="number"],
.config-group input[type="text"],
.config-group select {
  padding: 10px 12px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  transition: var(--transition);
}

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

.input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.input-row input {
  flex: 1;
  min-width: 80px;
}

.input-row span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  cursor: pointer;
  user-select: none;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* API Key section */
.api-key-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.api-key-section input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.9rem;
  font-family: "Courier New", monospace;
  transition: var(--transition);
}

.api-key-section input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.api-key-section small {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

/* Generate button */
.generate-btn {
  padding: 14px 28px;
  border: none;
  border-radius: 12px;
  background: var(--accent);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.generate-btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.generate-btn:active:not(:disabled) {
  transform: translateY(0);
}

/* Generated section */
.generated-section {
  margin-top: 40px;
  animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.generated-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding: 0 4px;
  flex-wrap: wrap;
  gap: 16px;
}

.generated-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

.action-buttons {
  display: flex;
  gap: 8px;
}

.btn-action {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: var(--glass-bg);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-action:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* Generated answer */
.generated-answer {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
  line-height: 1.8;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.05rem;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
}

.generated-answer h1,
.generated-answer h2,
.generated-answer h3 {
  font-family: "Space Grotesk", system-ui, sans-serif;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
}

.generated-answer h1 {
  font-size: 1.6rem;
}

.generated-answer h2 {
  font-size: 1.3rem;
}

.generated-answer h3 {
  font-size: 1.1rem;
}

.generated-answer p {
  margin-bottom: 1em;
}

.generated-answer ul,
.generated-answer ol {
  margin-left: 1.5em;
  margin-bottom: 1em;
}

.generated-answer li {
  margin-bottom: 0.5em;
}

.generated-answer strong {
  font-weight: 600;
  color: var(--text);
}

/* Answer metadata */
.answer-meta {
  margin-top: 20px;
  display: grid;
  gap: 16px;
}

.answer-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  font-size: 0.9rem;
}

.answer-stats > span {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 500;
}

/* Sources */
.sources-used {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 16px;
}

.sources-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.source-item {
  padding: 12px;
  background: var(--input-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.source-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.source-item p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Edit Interface */
.btn-edit {
  width: 100%;
  margin-top: 16px;
  padding: 12px 20px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: var(--glass-bg);
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-edit:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.edit-interface {
  margin-top: 20px;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  animation: slideUp 0.3s ease;
}

.edit-header {
  margin-bottom: 16px;
}

.edit-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.edit-description {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.edit-interface textarea {
  width: 100%;
  min-height: 100px;
  padding: 14px;
  font-size: 0.95rem;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: var(--input-bg);
  color: var(--text);
  font-family: inherit;
  resize: vertical;
  transition: var(--transition);
  margin-bottom: 12px;
}

.edit-interface textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.edit-interface textarea::placeholder {
  color: var(--text-muted);
}

.edit-actions {
  display: flex;
  gap: 10px;
}

.btn-primary {
  flex: 1;
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  flex: 1;
  padding: 12px 24px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--input-bg);
}

/* Version History */
.version-history-panel {
  margin-bottom: 20px;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  animation: slideUp 0.3s ease;
}

.version-history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--card-border);
}

.version-history-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
}

.btn-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.btn-close:hover {
  background: var(--input-bg);
  color: var(--text);
}

.version-list {
  display: grid;
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
}

.version-item {
  padding: 14px;
  background: var(--input-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
}

.version-item:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.version-item.active {
  background: var(--tag-bg);
  border-color: var(--accent);
}

.version-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.version-info strong {
  font-size: 0.95rem;
  color: var(--text);
}

.version-description {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.version-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.version-stats {
  font-size: 0.85rem;
  color: var(--tag-text);
  background: var(--tag-bg);
  padding: 4px 10px;
  border-radius: 999px;
  display: inline-block;
}

/* Utilities */
.hidden {
  display: none !important;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 12px;
    width: 100%;
  }

  .theme-toggle {
    top: 12px;
    right: 12px;
    width: 44px;
    height: 44px;
  }

  .brand-title {
    font-size: 1.75rem;
    padding: 0 8px;
  }

  .subtitle {
    font-size: 0.95rem;
    padding: 0 8px;
  }

  .search-box {
    width: 100%;
    padding: 0 4px;
  }

  .search-box input {
    padding: 14px 48px 14px 16px;
    font-size: 16px;
  }

  .search-icon {
    right: 16px;
  }

  .result-card {
    padding: 14px;
    font-size: 0.95rem;
  }

  .result-card h3 {
    font-size: 1.05rem;
  }

  .result-card > p {
    font-size: 0.9rem;
  }

  .meta span {
    font-size: 0.8rem;
    padding: 3px 10px;
  }

  .key-values div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .results-header h2 {
    font-size: 1.25rem;
  }

  .search-container.has-results {
    padding: 40px 0 20px;
  }

  .mode-tabs {
    flex-direction: column;
    gap: 4px;
  }

  .mode-tab {
    width: 100%;
    padding: 12px 16px;
  }

  .generate-box textarea {
    min-height: 120px;
    font-size: 14px;
  }

  .config-group input[type="number"],
  .config-group input[type="text"],
  .config-group select {
    font-size: 14px;
  }

  .input-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .input-row input {
    width: 100%;
  }

  .generated-answer {
    padding: 16px;
    font-size: 1rem;
  }

  .generated-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .action-buttons {
    width: 100%;
  }

  .btn-action {
    flex: 1;
  }

  .edit-interface {
    padding: 16px;
  }

  .edit-interface textarea {
    min-height: 80px;
    font-size: 14px;
  }

  .edit-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .version-history-panel {
    padding: 16px;
  }

  .version-item {
    padding: 12px;
  }

  .version-list {
    max-height: 300px;
  }
}