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

:root {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  line-height: 1.5;
  font-weight: 400;

  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --bg-hover: #252525;
  --text-primary: #f5f5f5;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;
  --border-color: #2a2a2a;
  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.1);
  --success-color: #10b981;
  --card-bg: #141414;

  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

#app {
  display: flex;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

.sidebar {
  width: 280px;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 20px;
  overflow-y: auto;
  backdrop-filter: blur(10px);
}

.sidebar-header {
  margin-bottom: 24px;
}

.sidebar-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.new-chat-btn {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.new-chat-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.new-chat-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.new-chat-btn:hover::before {
  left: 100%;
}

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

.data-sources h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-weight: 600;
}

.data-sources ul {
  list-style: none;
}

.message-actions button {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  transition: background 0.2s;
}

.message-actions button:hover {
  background: rgba(255, 255, 255, 0.1);
}


.data-sources li {
  padding: 10px 14px;
  margin-bottom: 6px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s ease;
  cursor: default;
}

.data-sources li:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  transform: translateX(4px);
}

.law-indicator {
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--accent-color), var(--success-color));
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 8px rgba(0, 81, 255, 0.5);
}

.law-indicator2 {
  width: 8px;
  height: 8px;
  background-color: red; /* Rot statt Farbverlauf */
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 8px rgba(255, 0, 0, 0.5); /* Roter Schatten */
}



@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-container {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  padding: 24px;
}

.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  text-align: center;
  animation: fadeIn 0.5s ease-in;
}

.welcome-screen.hidden {
  display: none;
}

.welcome-screen h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  animation: gradientShift 8s ease infinite;
  background-size: 200% 200%;
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.welcome-screen p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.example-questions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 700px;
  width: 100%;
}

.example-btn {
  padding: 18px 22px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: left;
  position: relative;
  overflow: hidden;
}

.example-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
  opacity: 0;
  transition: opacity 0.3s;
}

.example-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--accent-color);
}

.example-btn:hover::before {
  opacity: 1;
}

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

.messages {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.message {
  display: flex;
  gap: 16px;
  animation: slideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  animation-fill-mode: forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.3s;
  position: relative;
}

.message.user .message-avatar {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.message.assistant .message-avatar {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.message:hover .message-avatar {
  transform: scale(1.05) rotate(5deg);
}

.message-content {
  flex: 1;
  padding-top: 6px;
}

.message-content p {
  color: var(--text-primary);
  line-height: 1.7;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 0.95rem;
}

.message-content strong {
  color: var(--accent-color);
  font-weight: 600;
}

.message-content .law-reference {
  display: inline-block;
  padding: 2px 8px;
  background: var(--accent-light);
  border-radius: 6px;
  color: var(--accent-color);
  font-weight: 500;
  margin: 0 2px;
}

.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 8px 0;
}

.typing-dot {
  width: 8px;
  height: 8px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.5;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

.input-container {
  padding: 24px;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.input-wrapper {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 14px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.input-wrapper:focus-within {
  border-color: var(--accent-color);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15), 0 0 0 1px var(--accent-color);
  transform: translateY(-1px);
}

#user-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  resize: none;
  max-height: 200px;
  overflow-y: auto;
}

#user-input::placeholder {
  color: var(--text-secondary);
}

.send-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: none;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.send-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.send-btn:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.send-btn:not(:disabled):hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.send-btn:not(:disabled):hover::before {
  width: 100%;
  height: 100%;
}

.send-btn:not(:disabled):active {
  transform: scale(0.95);
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -260px;
    top: 0;
    bottom: 0;
    z-index: 100;
    transition: left 0.3s;
  }

  .sidebar.open {
    left: 0;
  }

  .example-questions {
    grid-template-columns: 1fr;
  }

  .welcome-screen h1 {
    font-size: 2rem;
  }
}