:root {
    /* Light Mode Colours */
    --bg-primary: #ffffff;
    --text-primary: #121212;
    --card-bg-light: rgba(0, 0, 0, 0.05);
    --overlay-light: rgba(255, 255, 255, 0.1);

    /* Dark Mode Colours */
--bg-primary-dark: #03070C;
    --text-primary-dark: #ffffff;
    --card-bg-dark: rgba(255, 255, 255, 0.05);
    --overlay-dark: rgba(0, 0, 0, 0.35);

    /* Accent Colour */
    --accent-color: #4facfe;

    /* Secondary Backgrounds */
    --bg-secondary-dark: rgba(255, 255, 255, 0.05); 
    --bg-secondary-light: rgba(0, 0, 0, 0.05);

    /* Button Colours */
    --btn-border-dark: #ffffff;
    --btn-text-dark: #ffffff;
    --btn-hover-bg-dark: #ffffff;
    --btn-hover-text-dark: #121212;

    --btn-border-light: #121212;
    --btn-text-light: #121212;
    --btn-hover-bg-light: #121212;
    --btn-hover-text-light: #ffffff;
}

/* Global scale – makes the entire site appear ~10% zoomed out */
html {
    font-size: 90%;
}

/* Keep accessibility sane — bump back up on very small devices */
@media (max-width: 480px) {
    html {
        font-size: 100%;
    }
}

/* Use .secondary for card-like backgrounds (e.g., skill-card, project-card) */
.secondary {
    background-color: var(--bg-secondary-dark);
    transition: background-color 0.3s ease;
}

@media (prefers-color-scheme: light) {
    .secondary {
        background-color: var(--bg-secondary-light);
    }
}

/* Existing resets and typography */
body {
    background-color: var(--bg-primary-dark);
    color: var(--text-primary-dark);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

h1, h2, h3 {
    color: var(--text-primary-dark);
    text-align: center;
    margin-bottom: 1rem;
    font-weight: 600;
}

p {
    color: var(--text-primary-dark);
    margin-bottom: 1rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--btn-hover-bg-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Cards should use .secondary for a distinct background */
.card {
    background: var(--card-bg-dark);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--overlay-dark);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    font-weight: bold;
    border: 2px solid var(--btn-border-dark); /* Use a fixed variable */
    color: var(--btn-text-dark);
    background: transparent;
    border-radius: 5px;
    transition: background 0.3s ease, color 0.3s ease;
}

.btn:hover {
    background: var(--btn-hover-bg-dark);
    color: var(--btn-hover-text-dark);
    /* Notice we do not modify the border here, so it remains unchanged */
}


@media (prefers-color-scheme: light) {
    body {
        background-color: var(--bg-primary);
        color: var(--text-primary);
    }

    h1, h2, h3, p {
        color: var(--text-primary);
    }

    a {
        color: var(--accent-color);
    }

    .card {
        background: var(--card-bg-light);
        box-shadow: 0 4px 6px var(--overlay-light);
    }

    .btn {
        border-color: var(--btn-border-light);
        color: var(--btn-text-light);
    }

    .btn:hover {
        background: var(--btn-hover-bg-light);
        color: var(--btn-hover-text-light);
    }
}

/* Prevent mobile overflow causing right-side spacing */
html, body {
    overflow-x: hidden !important;
    width: 100%;
}

* {
    box-sizing: border-box;
}