body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f0f2f5;
  display: block;
  padding-top: 60px;
  min-height: 100vh;
  margin: 0 auto;
}

h1 {
  text-align: left;
  color: black;
  margin-top: 10px;
}

.info-modelo {
  font-size: 10px;
  color: #666;
  margin-top: -20px;
  margin-bottom: 20px;
}

label {
  font-weight: 500;
  margin-top: 15px;
  display: block;
}

input[type="text"] {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 6px;
  box-sizing: border-box;
}

input[type="checkbox"] {
  margin-right: 6px;
}

.genre-label {
  display: flex;
  align-items: center;
  margin-top: 8px;
  font-size: 15px;
  font-weight: 500;
}

button {
  margin-top: 20px;
  width: 100%;
  padding: 12px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background-color: #218838;
}

.chat-container {
  display: flex;
  justify-self: center;
  width: 80%
}

.chat-box,
.response-box {
  background-color: #fff;
  padding: 25px 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  width: 45%;
  font-size: 16px;
  line-height: 1.6;
  align-self: flex-start;
  margin: 40px;
  justify-self: center;
}

@media (max-width: 1100px) {
  .chat-container {
    flex-direction: column;
  }

  .chat-box, .response-box {
    width: 70%;
    align-self: center;
  }
}

.chat-container:has(.chat-box):not(:has(.response-box)) .chat-box,
.chat-container:has(.response-box):not(:has(.chat-box)) .response-box {
  width: 100%;
}

.resposta-formatada {
  font-size: 16px;
  line-height: 1.6;
}

.hidden {
    display: none;
}

.small-link {
    font-size: 0.9em;
    text-align: left;
    margin-bottom: 30px;
}

.small-link a {
    text-decoration: underline;
    color: blue;
    cursor: pointer;
}

.genre-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* --- Navigation Bar --- */
.navbar {
  background-color: #28a745;
  overflow: hidden;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.navbar a {
  float: left;
  display: block;
  color: white;
  text-align: center;
  padding: 14px 24px;
  text-decoration: none;
  font-size: 17px;
  font-weight: 500;
  transition: background-color 0.2s;
}

.navbar a:hover {
  background-color: #218838;
  color: white;
}

.navbar a.active {
  background-color: #1e7e34;
  color: white;
}

/* --- Welcome Modal --- */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.7);
  backdrop-filter: blur(2px);
  animation: fadeIn 0.3s;
}

.modal-content {
  background-color: #fff;
  margin: 8% auto;
  padding: 40px;
  border: none;
  width: 85%;
  max-width: 650px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  text-align: center;
  position: relative;
  animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: 'Segoe UI', sans-serif;
}

.close-btn {
  color: #999;
  position: absolute;
  top: 15px;
  right: 25px;
  font-size: 32px;
  font-weight: 300;
  line-height: 1;
  transition: color 0.2s;
  cursor: pointer;
}

.close-btn:hover {
  color: #333;
}

.modal-title {
    color: #28a745;
    margin-bottom: 15px;
    font-size: 1.8em;
    font-weight: 600;
}

.modal-desc {
    font-size: 1.1em;
    color: #444;
    line-height: 1.6;
    margin-bottom: 30px;
    padding: 0 10px;
}

.tech-stack {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 30px;
    text-align: left;
    font-size: 1em;
    border-left: 5px solid #28a745;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.03);
}

.tech-stack h4 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 1.1em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech-stack ul {
    margin: 0;
    padding-left: 20px;
}

.tech-stack li {
    margin-bottom: 8px;
    color: #555;
    line-height: 1.5;
}

#start-intro-btn {
    width: auto;
    padding: 12px 40px;
    font-size: 1.1em;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(40, 167, 69, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

#start-intro-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(40, 167, 69, 0.4);
}

@keyframes fadeIn {
  from {opacity: 0}
  to {opacity: 1}
}

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

/* --- Floating Info Button (FAB) --- */
.info-fab {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #28a745;
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  text-align: center;
  line-height: 50px;
  font-size: 24px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  cursor: pointer;
  z-index: 1900;
  transition: transform 0.3s, background-color 0.3s;
  display: none;
}

.info-fab:hover {
  background-color: #218838;
  transform: scale(1.1);
}

.modal-text-content {
    font-size: 1em;
    text-align: left;
    margin-bottom: 15px;
}

.error-msg {
    color: red;
    display: none;
    font-size: 0.9em;
    margin-top: 5px;
}

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

.model-label {
    font-size: 0.9em;
    color: #555;
}

.model-select {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
    max-width: 100%;
}

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