/* --- General & Fonts --- */
* { box-sizing: border-box; }
:root {
  --accent: #f1961a;
  --accent-hover: #dd8408;
  --success: #22c55e;
  --error: #ef4444;
}
body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}
body.mobile-sidebar-open {
  overflow: hidden;
}

/* --- Animated Background --- */
#animated-background-svg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* --- Themes --- */
.light {
  --bg-main: #f8fafc;
  --bg-panel: rgba(255, 255, 255, 0.6);
  --text-main: #1e293b;
  --text-secondary: #475569;
  --border-color: rgba(0, 0, 0, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.1);
  --bubble-assistant: #e2e8f0;
  --bubble-user: rgba(241, 150, 26, 0.8);
}
.dark {
  --bg-main: #0f172a;
  --bg-panel: rgba(30, 41, 59, 0.5);
  --text-main: #e2e8f0;
  --text-secondary: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.3);
  --bubble-assistant: rgba(51, 65, 85, 0.8);
  --bubble-user: #f1961a;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
}

.glass-effect {
  background: var(--bg-panel);
  box-shadow: 0 8px 32px 0 var(--shadow-color);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
}

/* --- Responsive Layout --- */
.layout {
  display: flex;
  min-height: 100vh;
}

aside {
  width: 280px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  z-index: 40;
  transform: translateX(-100%);
  transition: transform 0.3s ease-in-out;
}

aside.open {
  transform: translateX(0);
}

main {
  width: 100%;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-height: 100vh;
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  z-index: 30;
  display: none;
}

@media (min-width: 1024px) {
  .layout {
    display: grid;
    grid-template-columns: 280px 1fr;
  }
  aside {
    position: static;
    transform: translateX(0);
    height: auto;
  }
  main {
    width: auto;
    padding: 1.5rem;
  }
  #mobile-menu-btn {
    display: none;
  }
}

/* --- UI Elements --- */
.brand img { max-width: 150px; height: auto; }
.header-controls { display: flex; justify-content: space-between; align-items: center; }
.home-main { padding-top: 2rem; }
.thread-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.thread-card { text-decoration: none; color: var(--text-main); padding: 1.5rem; transition: transform 0.2s, box-shadow 0.2s; display: flex; flex-direction: column; gap: 0.5rem; }
.thread-card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px var(--shadow-color); }
.card-title { font-weight: 600; font-size: 1.1rem; }
.card-meta { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--text-secondary); }

/* --- Stile per la barra di ricerca --- */
.search-wrapper {
  flex-grow: 1;
  max-width: 400px;
}
#search-input {
  width: 100%;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  color: var(--text-main);
  font-size: 1rem;
}
#search-input:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent);
}


.chat-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.messages { flex-grow: 1; overflow-y: auto; max-width: 900px; width: 100%; margin: 1rem auto; display: flex; flex-direction: column; gap: 1rem; padding-right: 0.5rem; }
.message { display: flex; flex-direction: column; gap: 0.25rem; max-width: 85%; }
.message.user { align-self: flex-end; }
.message.assistant, .message.system { align-self: flex-start; }
.message .role { font-size: 0.75rem; color: var(--text-secondary); margin-left: 0.25rem; }
.message.user .role { text-align: right; margin-right: 0.25rem; }
.message .bubble { padding: 0.75rem 1rem; line-height: 1.6; overflow-wrap: break-word; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid var(--border-color); box-shadow: 0 4px 12px var(--shadow-color); }
.message.user .bubble { background: var(--bubble-user); color: white; border-radius: 0.75rem 0.75rem 0.25rem 0.75rem; }
.message.assistant .bubble { background: var(--bubble-assistant); color: var(--text-main); border-radius: 0.75rem 0.75rem 0.75rem 0.25rem; }
.message.system .bubble { background: transparent; border: 1px dashed var(--border-color); color: var(--text-secondary); font-style: italic; text-align: center; width: 100%; align-self: center; max-width: 100%; box-shadow: none; backdrop-filter: none;}

.composer-area { max-width: 900px; width: 100%; margin: 0 auto; padding-top: 1rem; border-top: 1px solid var(--border-color); flex-shrink: 0; }
.composer { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; }
.composer textarea { width: 100%; padding: 0.75rem; border-radius: 0.5rem; border: 1px solid var(--border-color); background: var(--bg-panel); color: var(--text-main); resize: none; line-height: 1.5; }
.composer-buttons { display: flex; gap: 0.5rem; width: 100%; }
.composer button { border: 0; border-radius: 0.5rem; color: white; font-weight: 600; cursor: pointer; padding: 0.6rem 1rem; height: 44px; flex-shrink: 0; transition: background-color 0.2s; }
.composer .icon-btn { background: var(--panel); padding: 0; width: 44px; font-size: 1.25rem; }
.composer .notion-btn { background: #4f46e5; flex-grow: 1; }
.composer #sendBtn { background: var(--accent); flex-grow: 1; }
.composer button:hover { opacity: 0.9; }

.form-group { display: grid; gap: 0.5rem; }
.form-group label { font-size: 0.875rem; color: var(--text-secondary); }
.form-group input, .form-group select { width: 100%; padding: 0.5rem; border-radius: 0.5rem; border: 1px solid #4b4b4bc2; background: var(--bg-main); color: var(--text-main); }
.form-group button { padding: 0.6rem; border: 0; border-radius: 0.5rem; background: var(--panel); color: var(--text-main); cursor: pointer; font-weight: 500; }
.back { display: inline-block; padding-top: 1rem; color: var(--text-secondary); text-decoration: none; }
#assistant-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-grow: 1;
}

/* --- Stili per la sezione "Nuova Chat" --- */
.new-chat-section {
  padding: 1rem;
  margin-top: 1rem;
}
.new-chat-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.new-chat-submit-btn {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 0.5rem;
  background-color: var(--accent);
  color: white;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}
.new-chat-submit-btn:hover {
  background-color: var(--accent-hover);
}

/* --- NUOVI STILI PER I SELECT CUSTOM --- */
.select-wrapper {
  position: relative;
  flex-grow: 1;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
}
.select-wrapper::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 0.75rem;
  width: 0.8em;
  height: 0.5em;
  background-color: currentColor;
  clip-path: polygon(100% 0%, 0 0%, 50% 100%);
  transform: translateY(-50%);
  pointer-events: none;
}
.select-wrapper select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  background-color: transparent;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  font-size: 1rem;
}
.select-wrapper select:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent);
}

.icon-btn { background: transparent; border: none; cursor: pointer; padding: 0.5rem; border-radius: 50%; color: var(--text-secondary); }
.icon-btn:hover { background-color: var(--panel); color: var(--text-main); }

/* --- Stili per il popup allegati --- */
.modal-overlay { position: fixed; z-index: 100; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; }
.modal { width: 90%; max-width: 700px; max-height: 80vh; display: flex; flex-direction: column; }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.modal-header h2 { margin: 0; font-size: 1.25rem; }
.modal-body { padding: 1.5rem; overflow-y: auto; }
.attachment-item { background: var(--bg-main); padding: 1rem; border-radius: 0.5rem; margin-bottom: 1rem; border: 1px solid var(--border-color); }
.attachment-header { display: flex; justify-content: space-between; align-items: center; font-weight: 600; }
.attachment-header span { display: flex; align-items: center; gap: 0.5rem; }
.attachment-content { margin-top: 0.75rem; }
.collapsible-content { max-height: 250px; overflow: auto; background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 0.5rem; padding: 0.5rem; margin-top: 0.5rem; }
.collapsible-content pre { margin: 0; font-size: 0.8rem; white-space: pre-wrap; word-wrap: break-word; }
.toggle-content-btn, .refresh-btn { font-size: 0.8rem; padding: 0.25rem 0.5rem; border-radius: 0.25rem; border: 1px solid var(--border-color); background: var(--bg-panel); cursor: pointer; }

/* --- Stili per indicatori di caricamento --- */
.typing-indicator { display: flex; gap: 4px; align-items: center; padding: 8px 0; }
.typing-indicator .dot { width: 8px; height: 8px; background-color: var(--text-secondary); border-radius: 50%; animation: typing 1.4s infinite ease-in-out both; }
.typing-indicator .dot:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator .dot:nth-child(2) { animation-delay: -0.16s; }
@keyframes typing { 0%, 80%, 100% { transform: scale(0); } 40% { transform: scale(1.0); } }

.spinner { width: 16px; height: 16px; border: 2px solid rgba(255, 255, 255, 0.3); border-radius: 50%; border-top-color: #fff; animation: spin 1s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Stili per le notifiche Toast --- */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  color: white;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  opacity: 0;
  transform: translateX(100%);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.toast.show {
  opacity: 1;
  transform: translateX(0);
}
.toast.success {
  background-color: var(--success);
}
.toast.error {
  background-color: var(--error);
}

.dark #logo-light-theme { display: none; }
.light #logo-dark-theme { display: none; }

.header-actions { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.header-btn { padding: 0.5rem 1rem; border-radius: 0.5rem; border: 1px solid var(--border-color); background: var(--bg-panel); color: var(--text-main); cursor: pointer; font-weight: 500; height: 38px; }
.n8n-sync-group { display: flex; gap: 0.5rem; align-items: center; }
.n8n-sync-group input { padding: 0.5rem; border-radius: 0.5rem; border: 1px solid var(--border-color); background: var(--bg-main); color: var(--text-main); height: 38px; }
.n8n-sync-group button { background: #5b21b6; color: white; border: none; padding: 0.5rem 1rem; border-radius: 0.5rem; cursor: pointer; font-weight: 500; height: 38px; display: flex; align-items: center; gap: 0.5rem; }
.n8n-sync-group button:disabled { background: #a78bfa; cursor: wait; }

/* --- Stili per Login e Logout --- */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}
.login-box {
  width: 100%;
  max-width: 400px;
  padding: 2.5rem;
  text-align: center;
}
.login-logo {
  max-width: 180px;
  margin-bottom: 1.5rem;
}
.login-box h2 {
  margin-top: 0;
  margin-bottom: 1.5rem;
}
.login-box .form-group {
  text-align: left;
  margin-bottom: 1.5rem;
}
.login-box button {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 0.5rem;
  background-color: var(--accent);
  color: white;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}
.login-box button:hover {
  background-color: var(--accent-hover);
}
.error-message {
  color: var(--error);
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
}
.logout-btn {
  width: 100%;
  text-align: center;
  padding: 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 500;
  text-decoration: none;
  display: block;
  margin-top: auto;
}
.logout-btn:hover {
  background-color: var(--bg-main);
  border-color: var(--text-secondary);
}


@media (max-width: 1024px) {
    .chat-head { justify-content: space-between; flex-wrap: wrap; }
    .header-actions { flex-basis: 100%; margin-top: 0.5rem; justify-content: space-between; }
    .n8n-sync-group { flex-grow: 1; }
}

@media (max-width: 768px) {
    .composer { flex-direction: column; }
    .composer textarea { width: 100%; }
    .composer-buttons { width: 100%; }
    .header-actions { flex-direction: column; align-items: stretch; gap: 0.5rem; }
    .n8n-sync-group input { flex-grow: 1; }
}