:root {
  --color-primary: #2d5cd0;
  --color-primary-hover: #1e48b7;
  --color-accent: #00b843;
  --color-accent-hover: #00a03a;
  --color-danger: #e63946;

  --color-bg: #f5f7fb;
  --color-chat-bg: #fff;
  --color-border: #e2e8f0;
  --color-text: #333;
  --color-text-light: #6b7280;

  --color-bubble-left: #f2f2f2;
  --color-bubble-right: #e1f3fb;
  --color-input-bg: #f0f2f5;
  --color-secondary: #e8eef8;

  --shadow-light: 0 2px 5px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 20px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] {
  --color-primary: #4c6ef5;
  --color-primary-hover: #3b5bdb;
  --color-accent: #10b981;
  --color-accent-hover: #059669;
  --color-danger: #ef4444;

  --color-bg: #1a202c;
  --color-chat-bg: #1e293b;
  --color-border: #2d3748;
  --color-text: #e5e7eb;
  --color-text-light: #9ca3af;

  --color-bubble-left: #2d3748;
  --color-bubble-right: #3b4a63;
  --color-input-bg: #2d3748;
  --color-secondary: #334155;

  --shadow-light: 0 2px 5px rgba(0, 0, 0, 0.2);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-large: 0 10px 20px rgba(0, 0, 0, 0.3);
}

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

html {
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text);
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

button, input {
  font-family: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.msger {
  display: flex;
  flex-flow: column;
  width: 100%;
  max-width: 800px;
  height: 100vh;
  max-height: 800px;
  background-color: var(--color-chat-bg);
  box-shadow: var(--shadow-medium);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

@media (max-width: 800px) {
  .msger {
    max-width: 100%;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
  }
}

.msger-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.5rem;
  background-color: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-light);
}

.msger-header-title {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 600;
  gap: 0.5rem;
}

.logout-btn {
  background-color: rgba(255, 255, 255, 0.15);
  color: white;
  border: none;
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  transition: background-color 0.2s;
}

.logout-btn:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.theme-toggle {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, background-color 0.2s;
}

.theme-toggle:hover {
  background-color: rgba(255, 255, 255, 0.15);
  transform: rotate(15deg);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.models-btn {
  background-color: rgba(255, 255, 255, 0.15);
  color: white;
  border: none;
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  transition: background-color 0.2s;
}

.models-btn:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.msger-chat {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  background-color: var(--color-chat-bg);
}

.msg {
  display: flex;
  margin-bottom: 1rem;
}

.msg:last-of-type {
  margin-bottom: 0;
}

.msg-img {
  width: 40px;
  height: 40px;
  margin-right: 10px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  border-radius: 50%;
}

.msg-bubble {
  max-width: 75%;
  padding: 12px;
  border-radius: 12px;
  box-shadow: var(--shadow-light);
}

.left-msg .msg-bubble {
  background-color: var(--color-bubble-left);
  border-bottom-left-radius: 2px;
}

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

.right-msg .msg-img {
  margin-right: 0;
  margin-left: 10px;
}

.right-msg .msg-bubble {
  background-color: var(--color-bubble-right);
  border-bottom-right-radius: 2px;
  color: var(--color-text);
}

.msg-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.msg-info-name {
  margin-right: 10px;
  font-weight: 600;
}

.msg-info-time {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.msg-text {
  word-break: break-word;
  line-height: 1.5;
}

.msg-text pre {
  background-color: rgba(0, 0, 0, 0.05);
  padding: 8px;
  border-radius: 4px;
  overflow-x: auto;
  margin: 8px 0;
}

.msg-text code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.9em;
}

.msg-text p {
  margin-bottom: 0.8rem;
}

.msg-text p:last-child {
  margin-bottom: 0;
}

.msger-inputarea {
  display: flex;
  padding: 1rem;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-chat-bg);
}

.msger-input {
  flex: 1;
  padding: 0.8rem;
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: 8px 0 0 8px;
  background-color: var(--color-input-bg);
  color: var(--color-text);
  font-size: 1rem;
  outline: none;
  transition: all 0.2s;
}

.msger-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.msger-send-btn {
  border: none;
  padding: 0 1rem;
  background-color: var(--color-accent);
  color: #fff;
  border-radius: 0 8px 8px 0;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

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

.msger-send-btn.sending {
  opacity: 0.7;
  cursor: not-allowed;
}

.image-container {
  width: 100%;
  max-width: 100%;
  margin: 8px 0;
  text-align: center;
}

.response-image {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease;
  cursor: pointer;
}

.response-image:hover {
  transform: scale(1.01);
}

.response-image.loading {
  min-height: 100px;
  background: linear-gradient(90deg, var(--color-secondary) 25%, var(--color-bubble-left) 50%, var(--color-secondary) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite linear;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.modal {
  display: none;
  position: fixed;
  z-index: 100;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  overflow: auto;
}

.modal-content {
  position: relative;
  background-color: var(--color-chat-bg);
  margin: 10% auto;
  padding: 0;
  width: 90%;
  max-width: 600px;
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  animation: modalOpen 0.3s ease;
}

@keyframes modalOpen {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  padding: 16px 24px;
  background-color: var(--color-primary);
  color: white;
  border-radius: 12px 12px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
}

.close {
  color: white;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}

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

.modal-body {
  padding: 20px 24px;
  color: var(--color-text);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  text-align: right;
}

.model-section {
  margin-bottom: 24px;
}

.model-section h3 {
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 12px;
  color: var(--color-text);
}

.model-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.model-option {
  display: flex;
  align-items: center;
  padding: 12px 15px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid var(--color-border);
}

.model-option:hover {
  background-color: var(--color-secondary);
  transform: translateX(5px);
}

.model-option.selected {
  border-color: var(--color-primary);
  background-color: rgba(76, 110, 245, 0.1);
  border-left-width: 4px;
}

.model-radio {
  position: relative;
  width: 20px;
  height: 20px;
  margin-right: 12px;
}

.model-radio input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.radio-custom {
  position: absolute;
  top: 0;
  left: 0;
  height: 20px;
  width: 20px;
  background-color: var(--color-input-bg);
  border-radius: 50%;
  border: 2px solid var(--color-border);
  transition: all 0.2s ease;
}

.model-option.selected .radio-custom {
  border-color: var(--color-primary);
}

.model-option.selected .radio-custom:after {
  content: "";
  position: absolute;
  display: block;
  top: 4px;
  left: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.auth-container {
  width: 100%;
  max-width: 500px;
  background-color: var(--color-chat-bg);
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  overflow: hidden;
  margin: 1.5rem;
  transition: all 0.3s ease;
}

.auth-header {
  background-color: var(--color-primary);
  color: white;
  text-align: center;
  padding: 1.5rem;
  position: relative;
}

.auth-title {
  font-size: 1.8rem;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.auth-form {
  padding: 2rem;
}

.form-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.form-group {
  margin-bottom: 1.2rem;
  flex: 1;
}

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

.form-control {
  width: 100%;
  padding: 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background-color: var(--color-input-bg);
  color: var(--color-text);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(76, 110, 245, 0.1);
}

.btn {
  display: block;
  width: 100%;
  padding: 0.8rem;
  background-color: var(--color-accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

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

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

.auth-footer {
  text-align: center;
  padding: 1rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
}

.auth-footer a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

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

.flash-container {
  margin-bottom: 1.5rem;
}

.flash {
  padding: 0.8rem;
  border-radius: 8px;
  color: white;
  margin-bottom: 0.5rem;
}

.flash-danger {
  background-color: var(--color-danger);
}

.flash-success {
  background-color: var(--color-accent);
}

.flash-warning {
  background-color: #f59e0b;
}

.error-container {
  text-align: center;
}

.error-code {
  font-size: 7rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(45deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.error-message {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 2rem;
  color: var(--color-text);
}

.robot-icon {
  font-size: 5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

.toast {
  visibility: hidden;
  min-width: 250px;
  max-width: 80%;
  background-color: var(--color-primary);
  color: white;
  text-align: center;
  border-radius: 8px;
  padding: 16px;
  position: fixed;
  z-index: 1000;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  box-shadow: var(--shadow-large);
  font-weight: 500;
  white-space: pre-line;
  line-height: 1.5;
}

.toast.show {
  visibility: visible;
  animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

@keyframes fadein {
  from {bottom: 0; opacity: 0;}
  to {bottom: 30px; opacity: 1;}
}

@keyframes fadeout {
  from {bottom: 30px; opacity: 1;}
  to {bottom: 0; opacity: 0;}
}

#save-models {
  background-color: var(--color-primary);
  transition: background-color 0.2s;
  font-weight: 600;
  padding: 10px 18px;
}

#save-models:hover {
  background-color: var(--color-primary-hover);
}

@media (max-width: 640px) {
  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .auth-container {
    margin: 1rem;
  }

  .auth-form {
    padding: 1.5rem;
  }

  .btn-text {
    display: none;
  }

  .msger-header-title {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .auth-container {
    margin: 0.5rem;
    max-width: 95%;
  }

  .auth-form {
    padding: 1rem;
  }

  .auth-header {
    padding: 1rem;
  }

  .form-control, .btn {
    padding: 0.7rem;
  }

  .msger-header {
    padding: 0.6rem 1rem;
  }

  .msger-send-btn {
    padding: 0 0.8rem;
  }

  .image-container {
    margin: 5px 0;
  }

  .modal-content {
    width: 95%;
    margin: 5% auto;
  }

  .modal-body, .modal-footer {
    padding: 16px;
  }
}