/* CSS Variables for colors and fonts */
:root {
    --header-color: #4287F5;
    /* Default for calorie calculator */
    --primary-blue: #4287F5;
    --primary-pink: #F48FB1;
    --border-purple: #C8A2C8;
    --card-bg: #fff;
    --text-dark: #333;
    --text-light: #666;
    --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    background: linear-gradient(135deg, #F5E6FF, #E6F3FF);
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--header-color);
    padding: 24px 0 16px;
    text-align: center;
    color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.header h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 6px;
}

.header p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Container */
.container {
    max-width: 800px;
    margin: 20px auto 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Footer */
footer {
    background: #fff;
    text-align: center;
    padding: 16px;
    border-top: 1px solid #ddd;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 40px;
}

footer a {
    color: var(--primary-blue);
    text-decoration: none;
    margin: 0 8px;
    font-weight: 500;
}

footer a:hover {
    text-decoration: underline;
}

/* Calculator Links */
.calc-link-box {
    background: linear-gradient(135deg, #4287F5 60%, #64B5F6 100%);
    color: #fff;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    padding: 32px 24px;
    text-align: center;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s, background 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.calc-link-box.pregnancy {
    background: linear-gradient(135deg, #E1BEE7 60%, #F48FB1 100%);
}

.calc-link-box:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 8px 24px rgba(66, 135, 245, 0.18);
    background: linear-gradient(135deg, #4287F5 80%, #F48FB1 100%);
}

.calc-link-box.pregnancy:hover {
    background: linear-gradient(135deg, #F48FB1 80%, #E1BEE7 100%);
}

.calc-desc {
    font-size: 1rem;
    font-weight: 400;
    color: #fff;
    opacity: 0.92;
}

/* Intro Section */
.intro-section {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--box-shadow);
}

.intro-section p {
    font-size: 1.1rem;
    color: var(--text-dark);
    line-height: 1.7;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        gap: 20px;
        padding: 12px;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .calc-link-box {
        padding: 24px 12px;
        font-size: 1.1rem;
    }
}


h2 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: 18px;
    font-weight: 700;
}