:root {
    --primary: #5e35b1;
    --primary-light: #9162e4;
    --primary-dark: #280680;
    --secondary: #26a69a;
    --text: #333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.tool-container {
    max-width: 900px;
    margin: 40px auto;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
    font-family: Roboto, sans-serif;
}

.tool-header {
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    color: #fff;
    text-align: center;
    padding: 30px;
}

.tool-header h1 {
    font-family: Poppins, sans-serif;
    font-size: 2.4rem;
}

.tool-content {
    padding: 30px;
}

.tool-box {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.tool-inputs {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.tool-input {
    flex: 1;
}

.tool-input label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
}

.tool-input input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 2px solid #ddd;
}

.tool-btn-area {
    text-align: center;
    margin: 30px 0;
}

.tool-btn {
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    color: #fff;
    border: none;
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
}

.tool-result {
    display: none;
    background: var(--light-gray);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
}

.tool-result.active {
    display: block;
}

.date-cards {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.date-card {
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    min-width: 200px;
}

.date-title {
    color: var(--primary);
    font-weight: 500;
}

.date-value {
    font-size: 1.6rem;
    font-weight: bold;
}

.day-name {
    color: var(--secondary);
    font-weight: 600;
}

.total-days {
    margin-top: 25px;
    background: linear-gradient(to right, var(--secondary), #4db6ac);
    color: white;
    border-radius: 12px;
    padding: 25px;
}

.total-days span {
    font-size: 3rem;
    font-weight: bold;
}

@media (max-width: 768px) {
    .tool-inputs {
        flex-direction: column;
    }
}