/* ===== Container ===== */
#roi-calculator {
    max-width: 1100px;
    margin: 60px auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ===== Title Section ===== */
.roi-header {
    text-align: center;
    margin-bottom: 50px;
}

.roi-header h1 {
    font-size: 42px;
    font-weight: 700;
    color: #1f2937;
}

.roi-header h1 span {
    color: #10b981;
}

.roi-header p {
    color: #6b7280;
    font-size: 18px;
    margin-top: 10px;
}

/* ===== Layout Grid ===== */
.roi-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

/* ===== Card Style ===== */
.roi-card {
    background: #ffffff;
    border-radius: 14px;
    padding: 30px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    border: 1px solid #f1f1f1;
}

/* ===== Labels ===== */
.roi-card label {
    font-weight: 600;
    font-size: 14px;
    display: block;
    margin-bottom: 6px;
    color: #374151;
}

/* ===== Inputs ===== */
.roi-card input,
.roi-card select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
    font-size: 14px;
    margin-bottom: 20px;
    transition: all 0.2s ease;
    background: #f9fafb;
}

.roi-card input:focus,
.roi-card select:focus {
    border-color: #10b981;
    outline: none;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(16,185,129,0.1);
}

/* ===== Savings Card ===== */
.roi-savings {
    text-align: left;
}

.roi-savings h3 {
    font-size: 16px;
    color: #6b7280;
    margin-bottom: 10px;
}

.roi-amount {
    font-size: 52px;
    font-weight: 700;
    color: #10b981;
    margin-bottom: 10px;
}

.roi-peryear {
    font-size: 14px;
    color: #9ca3af;
    margin-bottom: 25px;
}

.roi-breakdown {
    border-top: 1px solid #f3f4f6;
    padding-top: 20px;
}

.roi-breakdown-item {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    margin-bottom: 10px;
    color: #374151;
}

/* ===== CTA Button ===== */
.roi-btn {
    width: 100%;
    padding: 14px;
    border-radius: 10px;
    border: none;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    background: linear-gradient(90deg, #2563eb, #1d4ed8);
    color: white;
    transition: all 0.2s ease;
}

.roi-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(37,99,235,0.3);
}

/* ===== Form Row (First/Last Name Side by Side) ===== */
.roi-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

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

    .roi-row {
        grid-template-columns: 1fr;
    }

    .roi-header h1 {
        font-size: 32px;
    }

    .roi-amount {
        font-size: 42px;
    }
}