:root {
    /* Paleta de Cores Tecnológicas */
    --primary-color: #00ffff; /* Ciano/Azul Elétrico */
    --secondary-color: #0077ff; /* Azul Profundo */
    --background-dark: #0a192f; /* Azul Escuro Quase Preto */
    --text-light: #e6f1ff; /* Branco Suave */
    --glass-background: rgba(4, 25, 49, 0.75); /* Fundo semi-transparente (Glassmorphism) */
    --border-color: #00ffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; /* Fonte limpa e moderna */
}

body {
    background-color: var(--background-dark);
    color: var(--text-light);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden; /* Garante que nada saia da tela */
    /* Configuração do Plano de Fundo com a Imagem */
    background-image: url('marina_fundo.jpeg.jpeg'); 
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

.chat-container {
    width: 90%;
    max-width: 450px;
    padding: 30px;
    border-radius: 20px;
    /* Efeito Glassmorphism (Vidro) */
    background: var(--glass-background);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    z-index: 1; /* Para ficar acima do fundo */
}

/* Título */
.chat-title {
    font-size: 2em;
    text-align: center;
    margin-bottom: 25px;
    /* Efeito Neon/Brilho */
    text-shadow: 0 0 5px var(--primary-color), 0 0 10px var(--primary-color);
    color: var(--primary-color);
}

/* Barra de Pesquisa Superior */
.search-bar {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 10px 15px;
    margin-bottom: 25px;
    border: 1px solid var(--secondary-color);
}

.search-bar i {
    color: var(--primary-color);
    margin-right: 10px;
}

.search-bar input {
    flex-grow: 1;
    border: none;
    background: transparent;
    color: var(--text-light);
    font-size: 1em;
    outline: none;
}

/* Seção de Histórico */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.history-header h2 {
    font-size: 0.8em;
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.delete-history-btn {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.75em;
    font-weight: bold;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.delete-history-btn:hover {
    background-color: rgba(0, 255, 255, 0.1);
    box-shadow: 0 0 5px var(--primary-color);
}

.history-list {
    list-style: none;
    max-height: 200px; /* Limita a altura para scroll */
    overflow-y: auto;
    padding-right: 10px; /* Espaço para a barra de scroll */
}

/* Estilo para a barra de rolagem (futurista) */
.history-list::-webkit-scrollbar {
    width: 8px;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

.history-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

.history-item {
    display: flex;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.history-item:last-child {
    border-bottom: none;
}

.history-item i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.1em;
}

.history-text {
    flex-grow: 1;
    font-size: 0.95em;
}

.history-time {
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.6);
}

/* Área de Input de Mensagem Inferior */
.input-area {
    display: flex;
    margin-top: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--primary-color);
}

.input-area input {
    flex-grow: 1;
    border: none;
    background: transparent;
    padding: 15px;
    color: var(--text-light);
    font-size: 1em;
    outline: none;
}

.send-btn {
    background-color: var(--primary-color);
    border: none;
    padding: 15px 20px;
    cursor: pointer;
    color: var(--background-dark); /* Cor escura para contraste */
    font-size: 1em;
    transition: background-color 0.3s, transform 0.1s;
}

.send-btn:hover {
    background-color: #00eeee; /* Cor um pouco mais clara ao passar o mouse */
    transform: scale(1.05);
}

.send-btn i {
    transform: rotate(45deg); /* Gira o ícone do avião de papel */
}