:root {
    --primary-color: #2e7d32; /* Forest Green */
    --secondary-color: #43a047;
    --accent-color: #ffca28; /* Amber for calls to action */
    --text-dark: #1b1b1b;
    --text-light: #f5f5f5;
    --bg-light: #ffffff;
    --bg-off-white: #f4f7f6;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-off-white);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 1rem 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
}

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.calculator-card {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

input[type="number"], select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box; /* Ensures padding doesn't affect width */
}

input[type="number"]:focus, select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(46, 125, 50, 0.2);
}

button.calculate-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 18px;
    border-radius: var(--border-radius);
    cursor: pointer;
    width: 100%;
    transition: background-color 0.2s;
    font-weight: bold;
}

button.calculate-btn:hover {
    background-color: var(--primary-color);
}

.result-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: #e8f5e9;
    border: 1px solid #c8e6c9;
    border-radius: var(--border-radius);
    display: none; /* Hidden by default */
}

.result-box h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.result-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-dark);
}

.result-detail {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

.ad-placeholder {
    background-color: #eee;
    border: 1px dashed #ccc;
    padding: 1rem;
    text-align: center;
    margin: 2rem 0;
    color: #888;
    font-style: italic;
}

/* Cookie Consent Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    display: none; /* Hidden by default, shown via JavaScript */
}

.cookie-banner.show {
    display: block;
}

.cookie-banner p {
    margin: 0 0 1rem 0;
    font-size: 0.9rem;
}

.cookie-banner a {
    color: var(--accent-color);
    text-decoration: underline;
}

.cookie-banner .buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cookie-banner button {
    background-color: var(--accent-color);
    color: var(--text-dark);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s;
}

.cookie-banner button:hover {
    background-color: #ffb300;
}

.cookie-banner button.accept-all {
    background-color: var(--secondary-color);
    color: white;
}

.cookie-banner button.accept-all:hover {
    background-color: var(--primary-color);
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #ddd;
    margin-top: 2rem;
}

.info-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #e8f5e9;
    border-left: 4px solid var(--accent-color);
    border-radius: 4px;
}

.info-section h2 {
    margin-top: 0;
    color: var(--primary-color);
}

.info-section ul {
    margin-bottom: 1rem;
}

.info-section p {
    margin-bottom: 0;
    font-style: italic;
    color: #555;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        width: 100%;
        padding: 10px;
    }
    .calculator-card {
        padding: 1.5rem;
    }
}