/* ========================================= */
/* RESET BÁSICO E ESTRUTURA                  */
/* ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box; 
}

body {
    font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.container {
    width: 100%;
    max-width: 420px;
    padding: 25px 20px;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========================================= */
/* MENU DE NAVEGAÇÃO (ABAS)                  */
/* ========================================= */
.menu-abas {
    display: flex;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: 5px;
    margin-bottom: 20px;
}

.aba-btn {
    flex: 1;
    background: transparent;
    color: #90a4ae;
    border: none;
    padding: 10px 5px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: none;
}

.aba-btn.ativa {
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    color: white;
    box-shadow: 0 4px 10px rgba(0, 114, 255, 0.3);
}

.conteudo-aba {
    display: none;
    animation: fadeIn 0.3s ease;
}

.conteudo-aba.ativo {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================= */
/* ELEMENTOS GERAIS DO APP                   */
/* ========================================= */
.cotacao {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 14px;
    color: #b0bec5;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

input {
    width: 100%;
    font-size: 16px; 
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin-bottom: 15px;
    color: #ffffff;
    outline: none;
    transition: all 0.3s;
}

input::placeholder { color: #78909c; }

input:focus {
    border-color: #00c6ff;
    box-shadow: 0 0 12px rgba(0, 198, 255, 0.3);
    background: rgba(0, 0, 0, 0.4);
}

button[type="submit"] {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 114, 255, 0.4);
}

.resultado {
    margin-top: 20px;
    background: linear-gradient(135deg, rgba(0, 198, 255, 0.1), rgba(0, 114, 255, 0.05));
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(0, 198, 255, 0.2);
    text-align: left;
}

/* ========================================= */
/* BOTÕES DO TRADUTOR DE VOZ                 */
/* ========================================= */
.btn-voz {
    width: 100%;
    padding: 14px;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-size: 14px;
    cursor: pointer;
}

.btn-voz:hover {
    background: rgba(255, 255, 255, 0.15);
}