/* ═══════════════════════════════════════════════════════════
   PORTFOLIO — /portfolio/
   Hồ sơ năng lực, light theme (cùng họ với /blog/), tối giản,
   in ra PDF được. Tách riêng khỏi CSS trang chủ.
═══════════════════════════════════════════════════════════ */
:root {
    --font: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    --bg: #fafaf9;
    --surface: #ffffff;
    --ink: #1c1917;
    --ink-2: #57534e;
    --ink-3: #a8a29e;
    --line: #e7e5e4;
    --accent: #0e7490;
    --accent-soft: #ecfeff;

    --wrap: 1080px;
    --r-lg: 20px;
    --r-md: 14px;
    --r-pill: 999px;
    --shadow-sm: 0 1px 2px rgba(28, 25, 23, .04), 0 1px 3px rgba(28, 25, 23, .04);
    --shadow-md: 0 10px 30px -12px rgba(28, 25, 23, .18);
    --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body.pf {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { font-weight: 700; letter-spacing: -.02em; line-height: 1.22; margin: 0; }
p, dl, dd { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 24px; }
@media (min-width: 768px) { .wrap { padding-inline: 40px; } }

.skip { position: absolute; left: -999px; top: 12px; z-index: 100; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: var(--r-pill); }
.skip:focus { left: 16px; }

/* ─── Song ngữ: mặc định VI, .lang-en đổi sang EN ─────────── */
[data-lang="en"] { display: none; }
body.pf.lang-en [data-lang="vi"] { display: none; }
body.pf.lang-en [data-lang="en"] { display: inline; }

/* ─── NAV ─────────────────────────────────────────────────── */
.pf-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 250, 249, .85);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
}

.pf-nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 62px; }

.pf-brand { display: flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: -.01em; }
.pf-brand img { width: 32px; height: 32px; border-radius: 50%; }
.pf-brand-sep { color: var(--ink-3); font-weight: 400; }
.pf-brand-sub { color: var(--ink-2); font-weight: 500; }

.pf-nav-links { display: flex; align-items: center; gap: 4px; }
.pf-nav-links > a {
    padding: 7px 12px;
    border-radius: var(--r-pill);
    font-size: 14.5px;
    font-weight: 500;
    color: var(--ink-2);
    transition: color .2s var(--ease), background .2s var(--ease);
}
.pf-nav-links > a:hover { color: var(--ink); background: #f5f5f4; }

.pf-lang {
    margin-left: 6px;
    padding: 6px 13px;
    border-radius: var(--r-pill);
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--ink-2);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .1em;
    cursor: pointer;
    transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.pf-lang:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

@media (max-width: 620px) {
    .pf-brand-sub, .pf-brand-sep { display: none; }
    .pf-nav-links > a { padding: 7px 9px; font-size: 13.5px; }
}

/* ─── HERO ────────────────────────────────────────────────── */
.pf-hero { padding: 56px 0 44px; border-bottom: 1px solid var(--line); }
.pf-hero-inner { display: flex; align-items: center; gap: 36px; }

.pf-avatar {
    width: 132px; height: 132px; flex: none;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-md);
}

.pf-eyebrow {
    font-size: 11.5px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase;
    color: var(--accent); margin-bottom: 10px;
}
.pf-name { font-size: clamp(30px, 5.2vw, 46px); }
.pf-latin { font-size: 15px; color: var(--ink-3); margin-top: 2px; letter-spacing: .04em; }
.pf-role { font-size: clamp(15px, 2vw, 17px); font-weight: 600; color: var(--ink-2); margin-top: 12px; }
.pf-loc { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-3); margin-top: 6px; }

.pf-contact-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }

.pf-chip {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 8px 15px;
    border-radius: var(--r-pill);
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--ink-2);
    font-size: 13.5px; font-weight: 500;
    cursor: pointer;
    transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.pf-chip svg { flex: none; opacity: .75; }
.pf-chip:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); transform: translateY(-1px); }
.pf-chip-primary { color: var(--ink); border-color: #d6d3d1; font-weight: 600; }

@media (max-width: 720px) {
    .pf-hero { padding: 38px 0 32px; }
    .pf-hero-inner { flex-direction: column; align-items: flex-start; gap: 22px; }
    .pf-avatar { width: 104px; height: 104px; }
}

/* ─── SECTION khung chung (nhãn trái · nội dung phải) ─────── */
.pf-sec { padding: 54px 0; }
.pf-sec-alt { background: var(--surface); border-block: 1px solid var(--line); }

.pf-grid { display: grid; grid-template-columns: 200px 1fr; gap: 40px; align-items: start; }

.pf-h2 {
    font-size: 12px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase;
    color: var(--ink-3);
    padding-top: 5px;
}

.pf-body { display: grid; gap: 16px; max-width: 720px; }
.pf-body > p { color: var(--ink-2); }
.pf-lead { font-size: 19px; line-height: 1.55; color: var(--ink) !important; font-weight: 500; letter-spacing: -.01em; }

@media (max-width: 860px) {
    .pf-sec { padding: 42px 0; }
    .pf-grid { grid-template-columns: 1fr; gap: 18px; }
    .pf-h2 { padding-top: 0; }
}

/* ─── ROLES ───────────────────────────────────────────────── */
.pf-roles { display: grid; gap: 2px; }
.pf-roles li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.pf-roles li:first-child { padding-top: 0; }
.pf-roles li:last-child { border-bottom: 0; padding-bottom: 0; }

.pf-role-head { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 6px; }
.pf-role-head h3 { font-size: 17.5px; }

.pf-tag {
    padding: 3px 11px;
    border-radius: var(--r-pill);
    background: var(--accent-soft);
    border: 1px solid #cffafe;
    color: var(--accent);
    font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
}

.pf-roles p { color: var(--ink-2); font-size: 15px; }

.pf-link {
    display: inline-flex; align-items: center; gap: 5px;
    margin-top: 8px;
    padding-bottom: 1px;
    border-bottom: 1px solid var(--line);
    color: var(--ink-3);
    font-size: 13.5px; font-weight: 500;
    transition: color .2s var(--ease), border-color .2s var(--ease);
}
.pf-link svg { transition: transform .2s var(--ease); }
.pf-link:hover { color: var(--accent); border-color: var(--accent); }
.pf-link:hover svg { transform: translate(2px, -2px); }

/* ─── CAPABILITIES ────────────────────────────────────────── */
.pf-cap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.pf-cap {
    padding: 20px;
    border-radius: var(--r-md);
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.pf-cap:hover { border-color: #cffafe; transform: translateY(-2px); }
.pf-cap h3 { font-size: 15.5px; margin-bottom: 6px; }
.pf-cap p { font-size: 14px; color: var(--ink-2); line-height: 1.6; }
.pf-sec-alt .pf-cap { background: var(--bg); }

@media (max-width: 620px) { .pf-cap-grid { grid-template-columns: 1fr; } }

/* ─── CREDENTIALS ─────────────────────────────────────────── */
.pf-cred {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 26px;
    align-items: start;
    padding: 22px;
    border-radius: var(--r-lg);
    background: var(--bg);
    border: 1px solid var(--line);
}
.pf-sec:not(.pf-sec-alt) .pf-cred { background: var(--surface); }

.pf-cred-img {
    display: block;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.pf-cred-img:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.pf-cred-img img { width: 100%; }

.pf-cred h3 { font-size: 17px; margin-bottom: 5px; }
.pf-cred-org { font-size: 14px; color: var(--ink-2); }

.pf-cred-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px 20px;
    margin: 16px 0;
    padding: 14px 0;
    border-block: 1px solid var(--line);
}
.pf-cred-meta div { display: flex; flex-direction: column; gap: 2px; }
.pf-cred-meta dt { font-size: 10.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.pf-cred-meta dd { font-size: 14px; font-weight: 600; font-variant-numeric: tabular-nums; }
.pf-cred-meta dd.pf-code { font-size: 12px; font-weight: 500; color: var(--ink-2); word-break: break-all; letter-spacing: .01em; }

.pf-verify {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 9px 17px;
    border-radius: var(--r-pill);
    background: var(--accent-soft);
    border: 1px solid #a5f3fc;
    color: var(--accent);
    font-size: 13.5px; font-weight: 600;
    transition: background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
}
.pf-verify:hover { background: var(--accent); color: #fff; transform: translateY(-1px); }

@media (max-width: 620px) {
    .pf-cred { grid-template-columns: 1fr; gap: 18px; padding: 18px; }
    .pf-cred-img { max-width: 200px; }
}

/* ─── MEDIA ───────────────────────────────────────────────── */
.pf-media { display: grid; gap: 2px; }
.pf-media li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.pf-media li:first-child { padding-top: 0; }
.pf-media li:last-child { border-bottom: 0; padding-bottom: 0; }
.pf-media h3 { font-size: 16.5px; margin-bottom: 5px; }
.pf-media p { font-size: 15px; color: var(--ink-2); }

/* ─── CONTACT ─────────────────────────────────────────────── */
.pf-sec-contact { padding: 54px 0 70px; }
.pf-contact-card {
    padding: 40px 32px;
    border-radius: var(--r-lg);
    background: var(--ink);
    color: #fff;
    text-align: center;
}
.pf-contact-card h2 { font-size: clamp(22px, 3.4vw, 30px); margin-bottom: 10px; }
.pf-contact-card p { color: rgba(255, 255, 255, .68); max-width: 520px; margin-inline: auto; font-size: 15px; }

.pf-contact-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 24px; }
.pf-btn {
    display: inline-flex; align-items: center;
    padding: 12px 24px;
    border-radius: var(--r-pill);
    background: #fff;
    color: var(--ink);
    font-size: 14.5px; font-weight: 600;
    border: 1px solid transparent;
    transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}
.pf-btn:hover { transform: translateY(-2px); }
.pf-btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .28); }
.pf-btn-ghost:hover { background: rgba(255, 255, 255, .1); }

/* ─── FOOTER ──────────────────────────────────────────────── */
.pf-foot { border-top: 1px solid var(--line); background: var(--surface); padding: 26px 0; }
.pf-foot-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; font-size: 13.5px; color: var(--ink-3); }
.pf-foot strong { color: var(--ink-2); font-weight: 600; }
.pf-foot-links { display: flex; flex-wrap: wrap; gap: 16px; }
.pf-foot-links a { transition: color .2s var(--ease); }
.pf-foot-links a:hover { color: var(--accent); }

/* ─── IN / LƯU PDF ────────────────────────────────────────── */
@media print {
    :root { --bg: #fff; --surface: #fff; }
    .pf-nav, .pf-print, .pf-foot-links, .skip { display: none !important; }
    body.pf { font-size: 11pt; line-height: 1.5; background: #fff; }
    .wrap { max-width: none; padding-inline: 0; }
    .pf-hero, .pf-sec { padding: 14pt 0; border: 0; }
    .pf-sec-alt { background: #fff; border: 0; }
    .pf-grid { grid-template-columns: 130px 1fr; gap: 18pt; }
    .pf-sec, .pf-cred, .pf-cap, .pf-roles li, .pf-media li { break-inside: avoid; }
    .pf-cap, .pf-cred { box-shadow: none; background: #fff; }
    .pf-contact-card { background: #fff; color: var(--ink); border: 1px solid var(--line); }
    .pf-contact-card p { color: var(--ink-2); }
    .pf-btn { border: 1px solid var(--line); }
    /* Hiện URL đầy đủ khi in — bản giấy vẫn kiểm chứng được */
    .pf-verify::after, .pf-link::after { content: " (" attr(href) ")"; font-weight: 400; font-size: 9pt; color: var(--ink-3); }
    .pf-cred-img { max-width: 130px; }
}