/* MODERN LIGHT THEME */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-primary: #f8fafc; /* Light Gray */
  --bg-secondary: #ffffff; /* White */
  --text-primary: #1e293b; /* Dark Slate */
  --text-secondary: #64748b; /* Slate */
  --border-color: #e2e8f0; /* Light Slate Border */
  --accent-color: #4f46e5; /* Indigo */
  --accent-hover: #4338ca;
  --accent-bg: #eef2ff; /* Very Light Indigo */

  --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);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* Base Card Style */
.card {
  background-color: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  color: var(--text-primary);
}

.sidebar h3 {
  color: var(--text-primary);
}

.sidebar input,
.sidebar textarea {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sidebar input:focus,
.sidebar textarea:focus {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.sidebar label {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
}

.sidebar button.action-btn {
  background-color: var(--accent-color);
  color: white;
  transition: background-color 0.2s;
}

.sidebar button.action-btn:hover {
  background-color: var(--accent-hover);
}

/* Chat Message Styles */
.msg-container {
  padding: 1rem;
}

.msg-user .bubble {
  background-color: var(--accent-color);
  color: white;
  border-radius: 18px 18px 4px 18px;
  box-shadow: var(--shadow-md);
}

.msg-bot .bubble {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 18px 18px 18px 4px;
  box-shadow: var(--shadow-sm);
}

/* Typography & Markdown Override for Light Theme */
.markdown-body {
  font-size: 0.95rem;
  line-height: 1.6;
}
.markdown-body strong { font-weight: 600; color: inherit; }
.markdown-body em { font-style: italic; color: inherit; }
.markdown-body code {
  background-color: rgba(0,0,0,0.05); /* Light gray for inline code */
  color: #d946ef; /* Magenta for code text */
  padding: 0.1em 0.3em;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9em;
}
.markdown-body pre {
  background-color: #1e293b; /* Dark background for code blocks looks cleaner */
  color: #e2e8f0;
  padding: 1em;
  border-radius: 8px;
  overflow-x: auto;
  margin: 0.8em 0;
}
.markdown-body pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
}
.markdown-body blockquote {
  border-left: 4px solid var(--accent-color);
  background-color: var(--accent-bg);
  padding: 0.5em 1em;
  margin: 0.5em 0;
  color: var(--text-secondary);
  border-radius: 0 4px 4px 0;
}
.markdown-body h1, .markdown-body h2, .markdown-body h3 {
  font-weight: 700;
  margin-top: 1em;
  margin-bottom: 0.5em;
  line-height: 1.2;
  color: var(--text-primary);
}
.markdown-body a { color: var(--accent-color); text-decoration: underline; }

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

textarea#user_input {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 12px;
  padding: 12px;
  font-size: 0.95rem;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
  transition: border-color 0.2s, box-shadow 0.2s;
  max-height: 160px;
  resize: none;
}

textarea#user_input:focus {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

#send_button {
  background-color: var(--accent-color);
  color: white;
  border-radius: 12px;
  transition: transform 0.1s, background-color 0.2s;
}

#send_button:hover {
  background-color: var(--accent-hover);
}

#send_button:active {
  transform: scale(0.96);
}

/* Typing Indicator */
.typing-dots span {
  width: 6px;
  height: 6px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  display: inline-block;
  animation: bounce 1.4s infinite ease-in-out both;
}
.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }

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

/* Mobile Sidebar Overlay */
.sidebar-overlay {
  background-color: rgba(0,0,0,0.4);
  backdrop-filter: blur(2px);
  z-index: 40;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 85%;
    max-width: 320px;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open {
    transform: translateX(0);
  }
}

/* Memory Panel */
.memory-panel {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
}
.memory-section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.memory-item {
  font-size: 0.85rem;
  color: var(--text-primary);
  padding-left: 0.5rem;
  border-left: 2px solid var(--border-color);
  margin-bottom: 0.25rem;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Avatar */
.avatar-ring {
  padding: 2px;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

.brand-tile {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.28);
}

.header-gradient {
  background: linear-gradient(90deg, #ffffff 0%, #f5f7ff 100%);
}

.panel {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 0.75rem;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.03);
}

.panel-title {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
  margin-bottom: 0.45rem;
}

.field {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid #dbe2ee;
  border-radius: 10px;
  background: #f8fafc;
  font-size: 0.85rem;
}

.field:focus {
  border-color: #6366f1;
  outline: none;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.sub-btn {
  border: 1px solid #d6dded;
  color: #475569;
  border-radius: 10px;
  background: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.45rem 0.65rem;
}

.sub-btn:hover {
  background: #f4f7ff;
  color: #334155;
}

.tiny-link {
  font-size: 0.72rem;
  color: #4f46e5;
}

.gallery-list {
  max-height: 15rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.gallery-item {
  border: 1px solid #dbe2ee;
  border-radius: 10px;
  padding: 0.5rem;
  background: #f8fafc;
}

.gallery-item h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: #1e293b;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}