/* CSS Variables - Customize these for partner branding */
:root {
  --primary-color: #0ea5e9;
  --primary-hover: #0284c7;
  --primary-light: #e0f2fe;

  --bg-color: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;

  --text-color: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-color: #334155;
  --error-color: #ef4444;
  --success-color: #22c55e;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
}

#app {
  height: 100%;
}

.view {
  height: 100%;
}

/* Login View */
#login-view {
  display: flex !important;
  align-items: center;
  justify-content: center;
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 2rem;
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
  width: 100%;
}

.logo-placeholder {
  width: 80px;
  height: 80px;
  background: var(--bg-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--primary-color);
}

.login-header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
}

.login-form {
  width: 100%;
  max-width: 360px;
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-color);
  font-size: 1rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.error-message {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  min-height: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

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

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-color);
}

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-icon {
  padding: 0.75rem;
}

.login-form .btn {
  width: 100%;
}

/* Spinner */
.spinner {
  animation: spin 1s linear infinite;
}

.spinner-circle {
  stroke-dasharray: 60;
  stroke-dashoffset: 45;
}

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

/* Chat View */
#chat-view {
  display: flex;
  flex-direction: column;
}

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

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-small {
  color: var(--primary-color);
}

.header-title {
  font-weight: 600;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-info {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Messages */
.chat-main {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.messages-container {
  max-width: 800px;
  margin: 0 auto;
}

.welcome-message {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.welcome-message h2 {
  color: var(--text-color);
  margin-bottom: 0.5rem;
}

.message {
  margin-bottom: 1.5rem;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.message-user {
  display: flex;
  justify-content: flex-end;
}

.message-user .message-content {
  background: var(--primary-color);
  color: white;
  border-radius: var(--radius-lg) var(--radius-lg) 0 var(--radius-lg);
}

.message-assistant .message-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 0;
}

.message-content {
  max-width: 80%;
  padding: 1rem 1.25rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.message-content code {
  background: var(--bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-family: 'SF Mono', Consolas, monospace;
  font-size: 0.875em;
}

.message-content pre {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 0.5rem 0;
}

.message-content pre code {
  background: none;
  padding: 0;
}

.message-error .message-content {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error-color);
  color: var(--error-color);
}

.typing-indicator {
  display: flex;
  gap: 0.25rem;
  padding: 1rem 1.25rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  width: fit-content;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: bounce 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); }
  40% { transform: scale(1); }
}

/* Chat Input */
.chat-footer {
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.chat-input-form {
  display: flex;
  gap: 0.75rem;
  max-width: 800px;
  margin: 0 auto;
}

#message-input {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-color);
  font-size: 1rem;
  font-family: inherit;
  resize: none;
  max-height: 150px;
  transition: border-color 0.15s ease;
}

#message-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

#message-input::placeholder {
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 640px) {
  .chat-header {
    padding: 0.75rem 1rem;
  }

  .user-info {
    display: none;
  }

  .chat-main {
    padding: 1rem;
  }

  .chat-footer {
    padding: 0.75rem 1rem;
  }

  .message-content {
    max-width: 90%;
  }
}