/* Estilos Globais e Tema */
:root {
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --text-primary: #e0e0e0;
  --text-secondary: #b3b3b3;
  --accent-color: #03dac6;
  --accent-hover: #018786;
  --correct-color: #4CAF50;
  --incorrect-color: #cf6679;
  --warning-color: #fdd835;
  --error-color: #b00020;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html.light-mode {
  --bg-primary: #f5f5f5;
  --bg-secondary: #ffffff;
  --text-primary: #212121;
  --text-secondary: #757575;
  --accent-color: #6200ee;
  --accent-hover: #3700b3;
  --incorrect-color: #b00020;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  padding: 1rem;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Estilos da Tela de Login --- */
.login-container {
    max-width: 400px;
    margin: 5rem auto;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    text-align: center;
}
.login-container h1 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}
.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}
.input-group {
    text-align: left;
    margin-bottom: 1.5rem;
}
.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.input-group input {
    width: 100%;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--text-secondary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    box-sizing: border-box;
}
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}
.button-group button {
    flex: 1;
    padding: 0.8rem;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}
.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-secondary);
}
.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}
.error-message {
    color: var(--error-color);
    min-height: 1.2rem;
    font-weight: 500;
}


/* --- Estilos da Tela de Jogo --- */
/* CORREÇÃO: Elemento para a tela de carregamento */
#loader {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    color: var(--text-secondary);
}
.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: clamp(1rem, 5vw, 2.5rem);
  background-color: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  text-align: center;
}
.header {
    position: relative;
    margin-bottom: 2rem;
}
#theme-toggle {
  position: absolute;
  top: 0;
  right: 0;
  background: none;
  border: none;
  font-size: clamp(1.2rem, 4vw, 1.5rem);
  cursor: pointer;
  color: var(--text-secondary);
  transition: color 0.2s ease, transform 0.2s ease;
}
#theme-toggle:hover {
    transform: scale(1.1);
    color: var(--accent-color);
}
.controls {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 2.5rem;
}
#btn-iniciar, #btn-reiniciar {
    width: 55px; height: 55px; padding: 0; border-radius: 50%;
    font-size: 1.5rem; display: flex; align-items: center; justify-content: center;
}
#btn-iniciar span, #btn-reiniciar span { display: none; }
#btn-sair { background-color: transparent; border: 1px solid var(--text-secondary); color: var(--text-secondary); }
.controls button {
    font-weight: 600; cursor: pointer; transition: all 0.2s ease;
}
.controls button:not(#btn-sair) { background-color: var(--accent-color); color: var(--bg-secondary); border: none; }
.controls button:hover { transform: translateY(-2px); box-shadow: 0 4px 10px rgba(0,0,0,0.2); }
select {
  padding: 0.75rem 1.5rem; border-radius: 20px; border: 1px solid var(--text-secondary);
  font-size: 1rem; font-weight: 600; background-color: var(--bg-primary); color: var(--text-primary); transition: all 0.2s ease;
}
.status { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; margin-bottom: 2rem; }
#timer { font-size: clamp(1rem, 3vw, 1.2rem); font-weight: 500; color: var(--text-secondary); }
#pontuacao-container { font-size: clamp(1.5rem, 5vw, 1.8rem); font-weight: 700; display: flex; gap: 2rem; }
.referencia-graus { color: var(--text-secondary); font-size: clamp(0.8rem, 2.5vw, 1rem); font-weight: 500; margin-bottom: 1rem; word-wrap: break-word; min-height: 1.2rem; }
.question { font-size: clamp(1.4rem, 4.5vw, 2rem); margin: 1rem 0 2.5rem 0; min-height: 3.5rem; color: var(--text-primary); font-weight: 500; line-height: 1.4; }
.answers { display: grid; grid-template-columns: repeat(4, 1fr);  gap: 1rem; justify-items: center; }
button.answer-btn {
  width: clamp(65px, 18vw, 85px); height: clamp(65px, 18vw, 85px); padding: 0; font-size: clamp(1.1rem, 4vw, 1.4rem); font-weight: 600;
  background-color: var(--bg-primary); color: var(--text-primary); border: 2px solid var(--text-secondary); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; transition: all 0.2s ease-in-out;
}
button.answer-btn:hover { background-color: var(--accent-color); color: var(--bg-secondary); border-color: var(--accent-color); transform: scale(1.05); }
.popup-container {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); display: grid;
    place-items: center; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; z-index: 1000;
}
.popup-container.visible { opacity: 1; pointer-events: auto; }
.popup-content {
    background-color: var(--bg-secondary); padding: 2rem 3rem; border-radius: 16px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3); text-align: center;
    transform: scale(0.9); transition: transform 0.3s ease;
}
.popup-container.visible .popup-content { transform: scale(1); }
#popup-text { font-size: clamp(1.5rem, 5vw, 2.2rem); font-weight: 700; margin: 0; }

/* Media Queries */
@media (max-width: 767px) {
    .header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
    .header h1 { margin: 0; font-size: clamp(1.5rem, 5vw, 2rem); text-align: left; }
    #theme-toggle { position: static; }
}

@media (min-width: 768px) {
  .controls { gap: 1rem; }
  #btn-iniciar, #btn-reiniciar, #btn-sair { width: auto; height: auto; padding: 0.75rem 1.5rem; border-radius: 20px; font-size: 1rem; }
  #btn-iniciar span, #btn-reiniciar span { display: inline; }
  .answers { grid-template-columns: repeat(8, 1fr); }
}