/* Layout do Container */
.contact-form-premium {
    background: rgba(26, 26, 26, 0.4);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 4px; /* Visual mais quadrado = mais industrial */
}

/* Campos de Input */
.input-container {
    position: relative;
}

.input-container input, 
.input-container textarea {
    width: 100%;
    background: transparent;
    border: none;
    padding: 10px 0;
    color: white;
    font-size: 14px;
    outline: none;
    resize: none;
}

/* Linha Base e Linha de Foco */
.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.input-container input:focus ~ .input-line,
.input-container textarea:focus ~ .input-line {
    background: #00C3FF;
    height: 2px;
    box-shadow: 0 4px 15px rgba(0, 195, 255, 0.2);
}

/* Labels Flutuantes */
.input-container label {
    position: absolute;
    left: 0;
    top: 10px;
    color: #666;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 700;
    pointer-events: none;
    transition: all 0.3s ease;
}

.input-container input:focus ~ label,
.input-container input:not(:placeholder-shown) ~ label,
.input-container textarea:focus ~ label,
.input-container textarea:not(:placeholder-shown) ~ label {
    top: -18px;
    color: #00C3FF;
    font-size: 9px;
}

/* Checkbox Customizado */
.custom-checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.custom-checkbox-container input {
    display: none;
}

.checkmark {
    width: 16px;
    height: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-right: 12px;
    position: relative;
    transition: all 0.3s;
}

.custom-checkbox-container input:checked ~ .checkmark {
    background: #00C3FF;
    border-color: #00C3FF;
}

.custom-checkbox-container input:checked ~ .checkmark::after {
    content: "✓";
    position: absolute;
    color: #0B0B0B;
    font-size: 10px;
    font-weight: 900;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}