:root {
    --bg: #fffafa;
    --text-main: #30344b;
    --text-secondary: #585d89;
    --heading: #404464;
    --link: #a3b5e1;
    --link-hover: #6582cd;
    --footer: #b0b3c7;
    --card-bg: #fff;
    --border: #e3e6f0;
}

[data-theme="dark"] {
    --bg: #23242b;
    --text-main: #f5f5f7;
    --text-secondary: #b6b8d6;
    --heading: #e3e6f0;
    --link: #8cb6ff;
    --link-hover: #e3e6f0;
    --footer: #b6b8d6;
    --card-bg: #292a33;
    --border: #35364a;
}

site {
    background: var(--bg);
    color: var(--text-main);
    font-family: "Ancizar Serif", serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

html,
body {
    height: 100%;
    overscroll-behavior: none;
}

body {
    background: var(--bg);
    color: var(--text-main);
    font-family: "Ancizar Serif", serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition:
        background 0.2s,
        color 0.2s;
}

header {
    width: 100%;
    padding: 24px 0 16px 0;
    background: transparent;
    text-align: left;
    margin-bottom: 32px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

nav {
    display: flex;
    gap: 32px;
    align-items: center;
    padding-left: 32px;
    flex: 1 1 auto;
}

nav a {
    color: var(--link);
    text-decoration: none;
    font-size: 20px;
    transition: color 0.2s;
    font-weight: 500;
}

nav a:hover,
nav a:focus {
    color: var(--link-hover);
}

h1 {
    font-size: 30px;
    font-weight: bold;
    margin: 0 0 24px 0;
    line-height: 1.2;
    color: var(--text-main);
    text-align: left;
}

p,
li,
span,
div,
section,
article {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.6;
    margin: 0 0 16px 0;
    color: var(--text-secondary);
    text-align: left;
}

main {
    width: 100%;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 40px;
    box-sizing: border-box;
    background: transparent;
    flex: 1 0 auto;
}

h2 {
    color: var(--heading);
    text-align: left;
}

.project-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px 20px 18px 20px;
    margin-bottom: 28px;
    background: var(--card-bg);
    box-shadow: 0 2px 8px 0 rgba(60, 64, 91, 0.03);
    max-width: 800px;
    margin-left: 0;
    margin-right: auto;
    transition:
        background 0.2s,
        border 0.2s;
}

.project-card h2 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 22px;
    font-weight: bold;
    color: var(--heading);
}

.project-card p {
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 18px;
}

.project-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-link-gh svg {
    vertical-align: middle;
    transition: fill 0.2s;
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    max-width: 20px;
    max-height: 20px;
    display: inline-block;
    box-sizing: content-box;
    fill: var(--text-main);
}

.project-link-gh:hover svg,
.project-link-gh:focus svg {
    fill: var(--link-hover);
    transition: fill 0.2s;
}

[data-theme="dark"] .project-link-site:hover svg,
[data-theme="dark"] .project-link-site:focus svg {
    fill: #8cb6ff;
}

[data-theme="dark"] .project-link-gh:hover svg,
[data-theme="dark"] .project-link-gh:focus svg {
    fill: #8cb6ff;
}

.project-link-site {
    font-size: 18px;
    color: var(--link);
    margin-left: 2px;
    text-decoration: none;
    transition: color 0.2s;
    vertical-align: middle;
}

.project-link-site svg {
    fill: var(--text-main);
    transition: fill 0.2s;
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    max-width: 20px;
    max-height: 20px;
    vertical-align: middle;
    display: inline-block;
    box-sizing: content-box;
}

.project-link-site:hover,
.project-link-site:focus {
    color: var(--link-hover);
}
.project-link-site:hover svg,
.project-link-site:focus svg {
    fill: var(--link-hover);
    transition: fill 0.2s;
}

.blog-preview {
    margin-bottom: 36px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.blog-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 2px;
}

.blog-preview-title {
    font-size: 22px;
    font-weight: bold;
    color: var(--heading);
    margin: 0;
    flex: 1 1 auto;
    text-align: left;
}

.blog-preview-date {
    font-size: 16px;
    color: var(--footer);
    white-space: nowrap;
    text-align: right;
    font-weight: 400;
    margin-left: 12px;
}

.blog-preview-summary {
    font-size: 18px;
    color: var(--text-secondary);
    margin: 0 0 8px 0;
    text-align: left;
}

.blog-preview-link {
    color: var(--link);
    text-decoration: none;
    font-size: 18px;
    transition: color 0.2s;
    font-weight: 500;
}

.blog-preview-link:hover,
.blog-preview-link:focus {
    color: var(--link-hover);
    text-decoration: underline;
}

.contact-link {
    color: var(--link);
    text-decoration: none;
    font-size: 20px;
    transition: color 0.2s;
    font-weight: 500;
}
.contact-link:hover,
.contact-link:focus {
    color: var(--link-hover);
}

@media (max-width: 600px) {
    header {
        padding: 16px 0 8px 0;
        margin-bottom: 24px;
    }
    nav {
        gap: 18px;
        padding-left: 12px;
    }
    main {
        padding: 0 16px;
        margin: 0;
        width: 100%;
        box-sizing: border-box;
    }
    h1 {
        font-size: 24px;
    }
    p,
    li,
    span,
    div,
    section,
    article {
        font-size: 17px;
    }
    .project-card {
        padding: 14px 8px 12px 8px;
    }
    .project-card h2 {
        font-size: 18px;
    }
    .project-card p {
        font-size: 15px;
    }
    .blog-preview-title {
        font-size: 18px;
    }
    .blog-preview-summary {
        font-size: 15px;
    }
    .blog-preview-date {
        font-size: 14px;
    }
    .newsletter-cta-card {
        padding: 14px 8px 12px 8px;
        max-width: 100%;
    }
    .newsletter-cta-card .newsletter-cta-btn {
        font-size: 16px;
        padding: 10px 18px;
    }
    footer.site-footer {
        font-size: 14px;
        padding: 0;
        margin: 32px 0 0 0;
    }
    footer.site-footer span {
        font-size: 14px;
        color: var(--footer);
    }
}

/* --- Newsletter CTA Card --- */
.newsletter-cta-card {
    margin: 40px 0 0 0;
    padding: 24px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    max-width: 600px;
}
.newsletter-cta-card p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}
.newsletter-cta-btn {
    display: inline-block;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    background: var(--link);
    border: none;
    border-radius: 6px;
    padding: 12px 28px;
    text-decoration: none;
    transition: background 0.2s;
}
.newsletter-cta-btn:hover,
.newsletter-cta-btn:focus {
    background: var(--link-hover);
    color: #fff;
}

/* --- Dark mode toggle button --- */
.theme-toggle-btn {
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 4px 8px;
    margin-left: auto;
    margin-right: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    width: 32px;
    border-radius: 50%;
    transition: background 0.15s;
    position: relative;
    z-index: 101;
}
.theme-toggle-btn:focus,
.theme-toggle-btn:hover {
    background: rgba(163, 181, 225, 0.12);
}
.theme-toggle-btn svg {
    display: block;
    width: 22px;
    height: 22px;
    fill: var(--link);
    transition: fill 0.2s;
}
.theme-toggle-btn:focus svg,
.theme-toggle-btn:hover svg {
    fill: var(--link-hover);
}

footer.site-footer {
    font-size: 14px;
    color: var(--footer);
    font-family: "Ancizar Serif", serif;
    background: transparent;
    padding: 24px 0 24px 24px;
    margin: 40px 0 0 0;
    user-select: none;
    pointer-events: none;
    letter-spacing: 0.01em;
    /* Removed position: fixed, left, bottom, z-index for non-sticky footer */
}
footer.site-footer span {
    font-size: 14px;
    color: var(--footer);
}
footer.site-footer .copyright-date {
    font-variant-numeric: tabular-nums;
    margin-left: 2px;
}

/* --- home 'About Me' --- */
.about-me {
    width: 100%;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Blog Categories --- */
.blog-categories {
    margin-bottom: 40px;
}
.blog-categories h2 {
    margin-bottom: 16px;
}
.category-grid {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.category-grid a {
    padding: 12px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--link);
    font-size: 18px;
    font-weight: 500;
    transition: background 0.2s, border 0.2s, color 0.2s;
}
.category-grid a:hover,
.category-grid a:focus {
    background: var(--link);
    color: white;
    border-color: var(--link);
}

/* --- Blog Toast --- */
.blog-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    max-width: 300px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    display: none;
    transition: opacity 0.3s, transform 0.3s, background 0.2s, border-color 0.2s, color 0.2s;
}
.blog-toast.show {
    display: block;
}
.toast-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    padding: 4px;
    line-height: 1;
    transition: color 0.2s;
}
.toast-close:hover {
    color: var(--heading);
}
.toast-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 8px;
}
.toast-link {
    color: var(--link);
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.2s;
}
.toast-link:hover {
    color: var(--link-hover);
}
#stay-away {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    transition: color 0.2s;
}
#stay-away:hover {
    color: var(--heading);
}

@media (max-width: 600px) {
    .about-me {
        max-width: 100%;
    }
}