/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Arial, sans-serif;
    background: #ffffff;
    color: #222;
}

/* CONTAINER */
.calc-container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
}

/* HERO */
.calc-hero {
    background: linear-gradient(135deg, #0a5ea8, #083d6b);
    color: #fff;
    text-align: center;
    padding: 80px 20px;
}

.calc-hero h1 {
    font-size: 40px;
    margin-bottom: 10px;
}

.calc-hero p {
    font-size: 18px;
    max-width: 800px;
    margin: auto;
    opacity: 0.95;
}

/* SECTION */
.calc-section {
    padding: 70px 0;
}

/* GRID */
.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

/* BOX */
.calc-box {
    background: #ffffff;
    padding: 30px;
    border-radius: 18px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

.calc-box h2 {
    color: #0a5ea8;
    margin-bottom: 20px;
}

/* INPUT */
.calc-box label {
    display: block;
    font-size: 14px;
    margin-bottom: 4px;
}

.calc-box input,
.calc-box select {
    width: 100%;
    padding: 12px;
    margin-bottom: 14px;
    border-radius: 8px;
    border: 1px solid #cfdff2;
}

.calc-box input:focus,
.calc-box select:focus {
    outline: none;
    border-color: #0a5ea8;
}

/* BUTTON */
.calc-box button {
    background: #0a5ea8;
    color: #ffffff;
    border: none;
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.calc-box button:hover {
    background: #083d6b;
}

/* RESULTS */
.result-box {
    background: #f4f9ff;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #dbe9ff;
}

.result-item strong {
    color: #0a5ea8;
}

/* NOTE */
.calc-note {
    background: #f4f9ff;
    padding: 20px 0;
    font-size: 13px;
    text-align: center;
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }

    .calc-hero h1 {
        font-size: 30px;
    }
}