/* ============================================
   Variables
   ============================================ */
:root {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-secondary: #555;
    --color-text-muted: #888;
    --color-accent: #0a4796;
    --color-accent-light: #e8eef7;
    --color-border: #e5e5e5;
    --font: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --page-max: 800px;
    --radius: 6px;
}

/* ============================================
   Reset
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================
   Page Shell
   ============================================ */
.page {
    max-width: var(--page-max);
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* ============================================
   Header
   ============================================ */
.header {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0.5rem;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.header-identity {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.tagline {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: 0.1rem;
}

.header-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: 0.85rem;
    transition: background 0.15s, color 0.15s;
}

.header-links a:hover {
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
}

.header-meta {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 0.75rem;
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.section:last-of-type {
    border-bottom: none;
}

.section h2 {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.section p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

/* ============================================
   Impact Highlights
   ============================================ */
.highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.highlight-item {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    background: var(--color-accent-light);
    padding: 0.4rem 0.85rem;
    border-radius: 100px;
    border-left: 3px solid var(--color-accent);
}

.highlight-item strong {
    color: var(--color-accent);
    font-weight: 700;
}

/* ============================================
   Jobs
   ============================================ */
.job {
    margin-bottom: 1.5rem;
}

.job:last-child {
    margin-bottom: 0;
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.4rem;
}

.job-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

.company {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-top: 0.1rem;
}

time {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    font-weight: 500;
}

.job ul, .section > ul {
    padding-left: 1.1rem;
    margin-top: 0.3rem;
}

.job li {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.35rem;
    line-height: 1.55;
}

.job li::marker {
    color: var(--color-accent);
}

/* ============================================
   Certifications
   ============================================ */
.cert-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 1rem;
}

.cert-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 500;
    padding: 0.3rem 0.7rem;
    border-radius: 100px;
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.credly-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* ============================================
   Skills
   ============================================ */
.tool-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-bottom: 1.25rem;
}

.tool-icons i {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    transition: color 0.15s;
}

.tool-icons i:hover {
    color: var(--color-accent);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.skill-group {
    background: var(--color-accent-light);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
}

.skill-group h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.skill-group p {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    text-align: center;
    padding: 1.25rem 0;
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.footer-source {
    margin-top: 0.4rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.footer-source a {
    color: var(--color-accent);
}

/* ============================================
   Visitor Count
   ============================================ */
.header-links .visitor-count {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ============================================
   Mobile
   ============================================ */
@media (max-width: 600px) {
    .page {
        margin: 1rem auto;
        padding: 0 1rem;
    }

    .header-top {
        flex-direction: column;
        align-items: flex-start;
    }

    .job-header {
        flex-direction: column;
        gap: 0.15rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Print
   ============================================ */
@media print {
    .page { margin: 0; padding: 0; max-width: 100%; }
    .section { break-inside: avoid; }
    .header-links a { background: none; color: var(--color-text); }
    .cert-tag { border: 1px solid var(--color-border); background: none; }
    .skill-group { background: none; border: 1px solid var(--color-border); }
}