:root {
  --bg-color: #343541;
  --sidebar-bg: #202123;
  --text-color: #ececf1;
  --text-strong: #ffffff;
  --input-bg: #40414f;
  --border-color: rgba(255, 255, 255, 0.1);
  --accent-color: #10a37f;
  --accent-hover: #0b8c6d;
}

body.light-theme {
  --bg-color: #ffffff;
  --sidebar-bg: #f9f9f9;
  --text-color: #202123;
  --text-strong: #000000;
  --input-bg: #ffffff;
  --border-color: #e5e5e5;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
}

.app-wrapper {
  display: flex;
  height: 100vh;
  width: 100%;
}

.sidebar {
  width: 260px;
  background-color: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  padding: 10px;
  box-sizing: border-box;
  border-right: 1px solid var(--border-color);
}

.model-selector {
  margin-bottom: 15px;
  position: relative;
}

.model-label {
  font-size: 12px;
  color: #8e8ea0;
  display: block;
  margin-bottom: 8px;
  margin-left: 2px;
}

.custom-dropdown {
  position: relative;
  width: 100%;
  user-select: none;
}

.dropdown-selected {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 12px 15px;
  border-radius: 8px;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.dropdown-selected:hover {
  background-color: var(--input-bg);
}

.dropdown-arrow {
  font-size: 10px;
  color: #8e8ea0;
  transition: transform 0.3s ease;
}

.custom-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.custom-dropdown.open .dropdown-selected {
  border-color: var(--accent-color);
  background-color: var(--input-bg);
}

.dropdown-options {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 5px;
  background-color: var(--sidebar-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  list-style: none;
  padding: 8px 0;
  margin-bottom: 0;
  z-index: 2000;
  display: none;
}

.custom-dropdown.open .dropdown-options {
  display: block;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dropdown-options li {
  padding: 12px 15px 12px 35px;
  font-size: 14px;
  color: var(--text-color);
  cursor: pointer;
  position: relative;
  transition: background-color 0.2s;
}

.dropdown-options li:hover {
  background-color: var(--input-bg);
}

.dropdown-options li.selected {
  color: var(--text-strong);
}

.dropdown-options li.selected::before {
  content: "✓";
  position: absolute;
  left: 12px;
  color: var(--text-strong);
  font-weight: bold;
}

.new-chat-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 12px;
  border-radius: 5px;
  cursor: pointer;
  margin-bottom: 20px;
  transition: background 0.2s;
  width: 100%;
  text-align: left;
  box-sizing: border-box;
  font-size: 14px;
}

.new-chat-btn:hover {
  background-color: var(--input-bg);
}

.history-list {
  flex-grow: 1;
  overflow-y: auto;
}

.history-item {
  padding: 10px;
  border-radius: 5px;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-color);
}

.history-item.active,
.history-item:hover {
  background-color: var(--input-bg);
}

.sidebar-footer {
  margin-top: auto;
}

#theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  margin-bottom: 10px;
  padding: 10px;
  text-align: left;
  width: 100%;
  border-radius: 5px;
}

#theme-toggle:hover {
  background-color: var(--input-bg);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.user-avatar {
  width: 32px;
  height: 32px;
  background-color: var(--accent-color);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: white;
}

.username {
  flex-grow: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.logout-link {
  color: #8e8ea0;
  text-decoration: none;
  font-size: 12px;
}

.logout-link:hover {
  text-decoration: underline;
}

.chat-main {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
}

.chat-container {
  flex-grow: 1;
  overflow-y: auto;
  padding: 20px 10%;
  display: flex;
  flex-direction: column;
  gap: 24px;
  scroll-behavior: smooth;
}

.message {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  line-height: 1.6;
  font-size: 15px;
  padding: 10px;
  border-radius: 8px;
}

.user-msg {
  flex-direction: row-reverse;
}

.user-msg .msg-content {
  background-color: var(--accent-color);
  color: white;
  padding: 12px 18px;
  border-radius: 18px;
  border-bottom-right-radius: 4px;
  max-width: 80%;
}

.bot-msg .msg-content {
  background-color: transparent;
  color: var(--text-color);
  max-width: 85%;
  flex-grow: 1;
  border-bottom-left-radius: 4px;
}
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: bold;
  font-size: 14px;
  margin-top: 2px;
}

.bot-avatar {
  background-color: var(--accent-color);
  color: white;
}

.bot-avatar i {
  font-size: 16px;
}

.user-avatar-chat {
  background-color: #5c5c70;
  color: white;
}

.bot-msg h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 18px;
  color: var(--accent-color);
  font-weight: 600;
}
.bot-msg p {
  margin: 0 0 12px 0;
}
.bot-msg p:last-child {
  margin-bottom: 0;
}
.bot-msg ul {
  margin: 8px 0 16px 0;
  padding-left: 20px;
}
.bot-msg li {
  margin-bottom: 6px;
}
.bot-msg strong {
  color: var(--text-strong);
  font-weight: 600;
}

#loading {
  padding: 0 10% 10px 10%;
}

.spinner-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 3px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  animation: spin 1s ease-in-out infinite;
}

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

.loading-text {
  color: #8e8ea0;
  font-size: 14px;
  font-style: italic;
}

.input-area {
  padding: 20px 10%;
  background-color: var(--bg-color);
  border-top: 1px solid var(--border-color);
}

.input-wrapper {
  display: flex;
  gap: 10px;
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.05);
}

.input-wrapper:focus-within {
  border-color: var(--accent-color);
}

input[type="text"] {
  flex-grow: 1;
  padding: 10px 15px;
  background-color: transparent;
  border: none;
  color: var(--text-color);
  font-size: 16px;
  outline: none;
}

button#send-btn {
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 8px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s;
}

button#send-btn:hover {
  background-color: var(--accent-hover);
}

.suggestions-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
}

.suggestions-title {
  font-size: 14px;
  color: #8e8ea0;
  margin-bottom: 5px;
}

.suggestion-btn {
  background-color: transparent;
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  padding: 10px 15px;
  border-radius: 18px;
  cursor: pointer;
  text-align: left;
  font-size: 14px;
  line-height: 1.4;
  transition: all 0.2s ease;
  width: fit-content;
  height: auto;
  max-width: 100%;
}

.suggestion-btn:hover {
  background-color: var(--accent-color);
  color: white;
  transform: translateY(-1px);
}

.auth-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--bg-color);
  padding: 20px;
  box-sizing: border-box;
}

.auth-container {
  background-color: var(--sidebar-bg);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 400px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.auth-container h1 {
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--text-color);
}

.auth-subtitle {
  color: #8e8ea0;
  font-size: 14px;
  margin-bottom: 30px;
}

.auth-container .input-group {
  margin-bottom: 25px;
  position: relative;
  text-align: left;
}

.auth-container input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 15px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--input-bg);
  color: var(--text-color);
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s;
}

.auth-container input[type="password"],
.auth-container input[type="text"]#password {
  padding-right: 45px;
}

.auth-container input:focus {
  border-color: var(--accent-color);
}

.auth-btn {
  width: 100%;
  padding: 14px;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  margin-top: 10px;
  transition: background-color 0.2s;
}

.auth-btn:hover {
  background-color: var(--accent-hover);
}

.auth-links {
  margin-top: 20px;
  font-size: 14px;
  color: #8e8ea0;
}

.auth-links a {
  color: var(--accent-color);
  text-decoration: none;
}

.auth-links a:hover {
  text-decoration: underline;
}

.password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #8e8ea0;
  cursor: pointer;
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

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

.password-toggle i {
  font-size: 18px;
}

.input-group input[type="password"],
.input-group input[type="text"] {
  padding-right: 45px;
}

:root {
  --sidebar-width: 260px;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  height: -webkit-fill-available;
  background-color: var(--bg-color);
}

.app-wrapper {
  display: flex;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1001;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 999;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

@media (max-width: 768px) {
  body,
  html,
  .app-wrapper,
  .chat-main {
    height: 100dvh !important;
  }

  .sidebar {
    position: fixed;
    left: -100%;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    z-index: 1000;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.3);
  }

  .sidebar.active {
    left: 0;
  }

  .sidebar.active ~ .sidebar-overlay {
    display: block;
  }

  .mobile-menu-btn {
    display: block;
  }

  .chat-main {
    width: 100%;
    margin-left: 0;
  }

  .auth-container {
    padding: 30px 20px;
    max-width: 90%;
  }

  .input-area {
    padding: 10px;
    padding-bottom: env(safe-area-inset-bottom, 15px) !important;
    flex-shrink: 0 !important;
  }

  .chat-container {
    padding: 60px 10px 20px 10px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .message {
    flex-direction: column !important;
    align-items: flex-start !important;
    max-width: 100% !important;
    width: 100% !important;
    gap: 8px !important;
    padding: 10px 0 !important;
  }

  .user-msg {
    align-items: flex-end !important;
  }

  .msg-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 8px !important;
  }

  .sidebar-header {
    padding-top: 55px !important;
  }
}

@media (max-width: 360px) {
  .auth-container {
    padding: 20px 15px;
  }
  .auth-container h1 {
    font-size: 20px;
  }
}

@media (min-width: 769px) {
  .sidebar {
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
  }
}

.nav-btn {
  background: none;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  margin-bottom: 5px;
  padding: 10px;
  text-align: left;
  width: 100%;
  border-radius: 5px;
  font-size: 14px;
}

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

.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-overlay.show {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: var(--sidebar-bg);
  color: var(--text-color);
  padding: 30px;
  border-radius: 12px;
  max-width: 500px;
  width: 90%;
  position: relative;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  background: none;
  border: none;
  color: #8e8ea0;
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}

.modal-close:hover {
  color: var(--accent-color);
}

.modal-content h2 {
  margin-top: 0;
  color: var(--text-strong);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
  margin-bottom: 20px;
}

.modal-content h3 {
  color: var(--text-strong);
  font-size: 16px;
  margin-top: 20px;
  margin-bottom: 10px;
}

.modal-content p,
.modal-content ul {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-color);
}

.modal-content a {
  color: var(--accent-color);
  text-decoration: none;
}

.modal-content a:hover {
  text-decoration: underline;
}

.modal-links {
  padding-left: 20px;
  margin: 10px 0;
}

.modal-links li {
  margin-bottom: 5px;
}