/* Color Palette & Variables */
:root {
    --primary-color: #040274; 
    --accent-color: #009688;  
    --bg-light: #f4f7f6;      
    --text-main: #2d3436;
    --text-muted: #636e72;
    --white: #ffffff;
    --transition: 0.3s ease-in-out;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--white);
    line-height: 1.6;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; transition: var(--transition); }

/* Header & Nav */
.site-header { 
    /* ĐÃ SỬA THÀNH background.jpg ĐỂ ĐÚNG VỚI FILE ẢNH BẠN TẢI LÊN */
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.5)), url('icon/background.webp') no-repeat center center;
    background-size: cover;
    color: #fff;
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    box-shadow: 0 4px 15px rgba(0,0,0,0.2); 
}
.header-inner { 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    padding: 30px 0; 
}
.logo { font-weight: 800; font-size: 24px; color: #fff; letter-spacing: 1px; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
.nav { display: flex; gap: 24px; }
.nav a { color: #fff; font-weight: 600; font-size: 16px; text-shadow: 0 1px 3px rgba(0,0,0,0.5); }
.nav a:hover { color: var(--accent-color); }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }

/* Language switcher: show English by default via body.lang-en */
/* ===== LANGUAGE FIX ===== */
body.lang-en .lang-en { display: inline; }
body.lang-en .lang-vi { display: none; }

body.lang-vi .lang-vi { display: inline; }
body.lang-vi .lang-en { display: none; }

.lang-toggle {
    background: #28a745;
    color: var(--white);
    /* luminous white border */
    border: 2px solid rgba(255,255,255,0.95);
    padding: 10px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 800;
    font-size: 16px;
    margin-left: 16px;
    box-shadow:
        0 0 14px rgba(255,255,255,0.55), /* white glow */
        0 6px 18px rgba(13,59,102,0.18); /* subtle blue depth */
}
.lang-toggle:hover { background: #218838; color: var(--white); box-shadow: 0 0 18px rgba(255,255,255,0.65), 0 8px 22px rgba(13,59,102,0.12); }

/* Hero Section */
.hero { background: var(--bg-light); padding: clamp(32px, 8vw, 80px) 0; position: relative; overflow-x: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 420px); gap: clamp(16px, 4vw, 40px); align-items: center; column-gap: clamp(16px, 4vw, 40px); width: 100%; }
.greeting { color: var(--accent-color); font-weight: 600; font-size: clamp(14px, 2.2vw, 18px); margin-bottom: 10px; }
.hero-content h1 { font-size: clamp(28px, 6.5vw, 56px); line-height: 1.05; font-weight: 800; margin-bottom: 16px; }
.thin-line { width: 80px; height: 4px; background: var(--accent-color); margin-bottom: 24px; border-radius: 2px; }
.summary { font-size: clamp(13px, 2.6vw, 16px); color: var(--text-muted); margin-bottom: 32px; max-width: 90%; text-align: justify; text-justify: inter-word; hyphens: auto; }

/* ===== METALLIC SAFE VERSION ===== */
.hero-content h1.metallic {
    position: relative;
    font-weight: 800;
    color: var(--primary-color);
}

.hero-content h1.metallic > .lang-en,
.hero-content h1.metallic > .lang-vi,
.hero-content h1.metallic .line-small {
    background: linear-gradient(
        110deg,
        var(--primary-color) 0%,
        #08046e 38%,
        #26238c 45%,
        #8d94d8 49%,
        #f2f5ff 50%,
        #8d94d8 51%,
        #26238c 55%,
        #08046e 62%,
        var(--primary-color) 100%
    );
    background-size: 300% 100%;
    background-position: 0 0;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    animation: metallicText 6.8s cubic-bezier(0.45, 0, 0.25, 1) infinite;
}

/* QUAN TRỌNG: do not force all spans visible — avoid overriding language toggles */
.hero-content h1.metallic span:not(.lang-en):not(.lang-vi) {
    display: inline;
}

/* SHIMMER */
.hero-content h1.metallic::after {
    content: none;
    display: none;
    position: absolute;
    inset: 0;

    pointer-events: none;

    background: linear-gradient(
        45deg,
        transparent 0%,
        rgba(255,255,255,0.75) 42%,
        #e9eef2 50%,
        rgba(255,255,255,0.75) 58%,
        transparent 100%
    );

    background-size: 250% 100%;
    background-position: 250% 0;

    opacity: 0;

    animation: shimmer 2s ease-in-out infinite;
}

/* GLOW */
.hero-content h1.metallic::before {
    content: none;
    display: none;
    position: absolute;
    inset: 0;

    pointer-events: none;

    background: linear-gradient(
        45deg,
        transparent,
        rgba(255,255,255,0.25),
        transparent
    );

    filter: blur(6px);
    opacity: 0;

    animation: glow 2s ease-in-out infinite;
}
/* ===== ANIMATION ===== */
@keyframes shimmer {
    0%, 60% {
        background-position: 250% 0;
        opacity: 0;
    }
    65% { opacity: 1; }
    85% {
        background-position: -20% 0;
        opacity: 1;
    }
    100% {
        background-position: -250% 0;
        opacity: 0;
    }
}

@keyframes glow {
    0%, 60% { opacity: 0; }
    70% { opacity: 0.18; }
    85% { opacity: 0.08; }
    100% { opacity: 0; }
}

@keyframes metallicText {
    0%, 58% {
        background-position: 0 0;
    }
    88% {
        background-position: 100% 0;
    }
    88.01% {
        background-position: 0 0;
    }
    100% {
        background-position: 0 0;
    }
}
.cta-group { display: flex; gap: 16px; flex-wrap: wrap; }
.cta { display: inline-block; background: var(--primary-color); color: var(--white); padding: 14px 28px; font-weight: 600; border-radius: 6px; border: 2px solid var(--primary-color); font-size: 16px; }
.cta:hover { background: transparent; color: var(--primary-color); }
.cta-outline { background: transparent; color: var(--primary-color); }
.cta-outline:hover { background: var(--primary-color); color: var(--white); }

/* Profile Card in Hero - Khung thông tin lớn */
.profile-card { 
    background: var(--white); 
    padding: 40px; 
    border-radius: 16px; 
    box-shadow: 0 10px 40px rgba(0,0,0,0.1); 
    text-align: center; 
}
.avatar { 
    width: 220px; 
    height: 220px; 
    border-radius: 50%; 
    object-fit: cover; 
    border: 6px solid var(--bg-light); 
    margin-bottom: 24px; 
}
.profile-details { list-style: none; text-align: left; margin: 0 auto; display: inline-block; padding-left: 18px; }
.profile-details li { margin-bottom: 16px; display: flex; align-items: center; gap: 16px; padding: 4px 0; }
.detail-icon-img { 
    width: 26px; 
    height: 26px; 
    display: block; 
    object-fit: contain; 
} 
.detail-text { 
    font-size: 16px; 
    color: var(--text-main); 
}
.profile-details a:hover { color: var(--accent-color); text-decoration: underline; }

/* Section Globals */
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 32px; color: var(--primary-color); font-weight: 800; }
.underline { width: 60px; height: 4px; background: var(--accent-color); margin: 12px auto 0; border-radius: 2px; }

/* Expertise Section */
.expertise { padding: 40px 0; background: var(--white); }
.expertise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.expertise-card { background: var(--bg-light); padding: 40px 24px; border-radius: 12px; text-align: center; transition: var(--transition); border-bottom: 4px solid transparent; }
.expertise-card:hover { transform: translateY(-5px); border-bottom: 4px solid var(--accent-color); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.icon-circle { width: 70px; height: 70px; border-radius: 50%; background: var(--white); display: flex; align-items: center; justify-content: center; font-size: 32px; margin: 0 auto 20px; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
.expertise-card h3 { font-size: 20px; margin-bottom: 12px; color: var(--primary-color); }
.expertise-card p { font-size: 15px; color: var(--text-muted); }

/* Publications Section */
/* Cards Section */
.cards-section { padding: 40px 0; background: var(--white); }
.cards-section .section-header { text-align: center; margin-bottom: 32px; }
.cards-grid { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; padding: 0; margin: 0; }
.card-item { background: var(--bg-light); padding: 20px; border-radius: 12px; text-align: center; box-shadow: 0 8px 30px rgba(0,0,0,0.04); display:flex; flex-direction:column; align-items:center; gap:12px; min-height: 340px; }
/* Make image larger but use contain to avoid cropping corners; keep rounded corners */
.card-img { width: 100%; height: 220px; object-fit: contain; border-radius: 8px; background-color: var(--white); padding: 6px; }
.card-title { font-size: 18px; color: var(--primary-color); margin: 8px 0 0 0; }
.card-btn { margin-top: auto; display:inline-block; padding:10px 16px; background: var(--primary-color); color: var(--white); border-radius:8px; font-weight:600; text-decoration:none; border: 2px solid var(--primary-color); }
.card-btn:hover { background: transparent; color: var(--primary-color); }

@media (max-width: 1100px) {
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .cards-grid { grid-template-columns: 1fr; }
}
.publications { padding: 80px 0; background: var(--bg-light); }
.pub-group { background: var(--white); padding: 40px; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.03); }
.pub-title { font-size: 22px; color: var(--primary-color); margin-bottom: 24px; border-bottom: 2px solid var(--bg-light); padding-bottom: 10px; }
.mt-40 { margin-top: 40px; }

/* Timeline Items */
.timeline-list { list-style: none; border-left: 2px solid #ddd; padding-left: 24px; margin-left: 12px; }
.timeline-list.full-width .timeline-item { margin-bottom: 24px; }
.timeline-item { position: relative; margin-bottom: 30px; }
.timeline-item::before { content: ""; position: absolute; left: -31px; top: 4px; width: 14px; height: 14px; background: var(--accent-color); border-radius: 50%; border: 3px solid var(--white); }
.timeline-item .date { display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent-color); margin-bottom: 8px; background: rgba(0, 150, 136, 0.1); padding: 4px 10px; border-radius: 20px; }
.timeline-item h4 { font-size: 17px; margin-bottom: 8px; line-height: 1.4; }
.timeline-item h4 a { color: var(--primary-color); transition: 0.2s; }
.timeline-item h4 a:hover { color: var(--accent-color); text-decoration: underline; }
.timeline-item p { font-size: 15px; color: var(--text-muted); }
.timeline-item p strong { color: var(--text-main); }

/* Achievements & Certs */
.publications-certs { padding: 80px 0; background: var(--white); }
.pb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.pb-column h2 { font-size: 26px; color: var(--primary-color); margin-bottom: 8px; }
.pb-column .underline { margin: 0 0 30px 0; }

/* Lists for Certs & Awards */
.cert-list { list-style: none; display: flex; flex-direction: column; gap: 20px; }
.cert-list li { background: var(--bg-light); padding: 20px; border-radius: 8px; border-left: 4px solid var(--primary-color); transition: transform 0.2s; }
.cert-list li:hover { transform: translateX(5px); }
.cert-list li strong { font-size: 16px; color: var(--text-main); }
.cert-list li a { font-size: 14px; color: var(--accent-color); font-weight: 600; display: inline-block; margin-top: 8px; }

.award-list li { padding: 16px 20px; }
.award-year { display: inline-block; background: var(--primary-color); color: var(--white); font-size: 12px; font-weight: bold; padding: 2px 8px; border-radius: 4px; margin-right: 8px; margin-bottom: 8px; }
.award-list p { font-size: 14px; color: var(--text-muted); margin-top: 6px; }

/* Footer */
.site-footer { background: var(--primary-color); color: var(--white); text-align: center; padding: 30px 0; }
.footer-content p { color: rgba(255,255,255,0.7); font-size: 14px; margin-bottom: 4px; }

.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1500;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #28a745;
    color: var(--white);
    border-radius: 50%;
    box-shadow: 0 10px 28px rgba(40, 167, 69, 0.35);
    font-size: 20px;
    border: 2px solid rgba(255,255,255,0.9);
}

.back-to-top:hover {
    background: #218838;
    color: var(--white);
    transform: translateY(-3px);
}

.email-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.45);
}

.email-modal.open {
    display: flex;
}

.email-modal-box {
    width: min(92vw, 420px);
    background: var(--white);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 18px 55px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.email-modal-title {
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 10px;
}

.email-modal-value {
    color: var(--text-main);
    font-size: 15px;
    line-height: 1.4;
    overflow-wrap: anywhere;
    margin-bottom: 16px;
}

.email-modal-close {
    background: #28a745;
    color: var(--white);
    border: 0;
    border-radius: 6px;
    padding: 9px 18px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.email-modal-close:hover {
    background: #218838;
}

/* Responsive Media Queries */
@media (max-width: 860px) {
    .site-header { position: sticky; }
    .header-inner {
        gap: 14px;
        padding: 18px 16px;
    }
    .logo {
        flex: 0 0 auto;
        font-size: clamp(14px, 3vw, 20px);
        white-space: nowrap;
    }
    /* Keep hero two-column but allow right column to shrink so layout remains side-by-side */
    .hero-grid { grid-template-columns: minmax(0, 52%) minmax(0, 44%); gap: 4%; align-items: center; }
    .hero-content { text-align: left; }
    .hero-content h1 { margin: 0 0 20px 0; }
    .summary { margin: 0 0 30px 0; }
    .thin-line { margin: 0 0 24px 0; }
    .cta-group { justify-content: flex-start; }

    .nav {
        position: static;
        display: flex;
        flex: 1 1 auto;
        flex-direction: row;
        justify-content: center;
        gap: clamp(8px, 2.2vw, 18px);
        min-width: 0;
        background: transparent;
        padding: 0;
        box-shadow: none;
    }
    .nav.open { display: flex; }
    .nav a {
        padding: 0;
        border-bottom: 0;
        font-size: clamp(10px, 2vw, 14px);
        white-space: nowrap;
    }
    .nav-toggle { display: none; }
    .lang-toggle {
        flex: 0 0 auto;
        margin-left: 0;
    }

    .profile-card { padding: clamp(12px, 3.5vw, 24px); max-width: 100%; box-sizing: border-box; overflow: hidden; }
    .avatar { width: clamp(80px, 18vw, 140px); height: clamp(80px, 18vw, 140px); }
    .paper-image-frame { flex-basis: 120px; width: 120px; height: 78px; padding: 6px; }

    .cards-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
    .card-item { min-height: auto; padding: 14px; }
    .card-img { height: 140px; }
    .card-title { font-size: 13px; }
    .card-btn { padding: 8px 12px; font-size: 12px; }

    .expertise-grid { grid-template-columns: 1fr; }
    .pb-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
    .pub-group { padding: 24px; }
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.item-content {
    flex: 1;
    min-width: 0;
}

.paper-image-frame {
    flex: 0 0 170px;
    width: 170px;
    height: 108px;
    margin: 0;
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8faf9;
    border: 1px solid rgba(4, 2, 116, 0.1);
    border-radius: 8px;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.7);
}

.paper-image {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    border-radius: 6px;
}

.paper-image:not([src]),
.paper-image[src=""] {
    display: none;
}

.download-btn {
    min-width: 42px;
    height: 42px;
    background: #28a745;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    font-size: 18px;
    transition: 0.3s ease;
    flex: 0 0 auto;
}

.download-btn:hover {
    background: #218838;
    transform: scale(1.1);
}

@media (max-width: 860px) and (min-width: 481px) {
    .paper-image-frame {
        flex-basis: 120px;
        width: 120px;
        height: 78px;
        padding: 2px;
    }
}

/* ===== WRAPPER ===== */
.avatar-orbit {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
}

/* AVATAR */
.avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: block;
}

/* ===== ORBIT ===== */
.orbit {
    position: absolute;
    top: -10px;
    left: -10px;

    width: 180px;
    height: 180px;

    border-radius: 50%;

    animation: orbitRotate 6s linear infinite;
}

/* WRAPPER */
.avatar-orbit {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
}

/* AVATAR */
.avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

/* ORBIT (tăng bán kính để rocket to không đụng avatar) */
.orbit {
    position: absolute;
    top: -25px;
    left: -25px;

    width: 210px;
    height: 210px;

    border-radius: 50%;

    animation: orbitRotate 6s linear infinite;
}

/* WRAPPER */
.avatar-orbit {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
}

/* AVATAR */
.avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

/* ===== ORBIT (TĂNG KHOẢNG CÁCH) ===== */
.orbit {
    position: absolute;

    /* tăng khoảng cách ra */
    top: -45px;
    left: -45px;

    width: 250px;
    height: 250px;

    border-radius: 50%;

    animation: orbitRotate 8s linear infinite;
}

/* ===== ROCKET ===== */
.rocket {
    position: absolute;
    top: 0;
    left: 50%;

    width: 45px;

    transform: translateX(-50%) rotate(90deg);

    animation: rocketSpin 8s linear infinite;

    filter: drop-shadow(0 0 6px rgba(255,100,0,0.6));
}

/* ANIMATION */
@keyframes orbitRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes rocketSpin {
    from {
        transform: translateX(-50%) rotate(90deg) rotate(0deg);
    }
    to {
        transform: translateX(-50%) rotate(90deg) rotate(360deg);
    }
}
.line-small {
    font-size: 0.75em;   /* nhỏ lại */
    display: block;
    opacity: 0.9;        /* nhẹ hơn chút cho đẹp */
}

/* Extra small phones: tighten sizes so layout stays two-column and fits */
@media (max-width: 480px) {
    .container { padding: 0 14px; }
    .header-inner {
        flex-wrap: wrap;
        gap: 8px;
        padding: 10px 8px;
    }
    .logo {
        order: 1;
        flex: 1 1 auto;
        font-size: 13px;
        letter-spacing: 0.3px;
    }
    .nav {
        order: 3;
        flex: 0 0 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px 12px;
        margin-top: 4px;
    }
    .nav a { font-size: 9.5px; }

    .lang-toggle { order: 2; padding: 6px 9px; font-size: 12px; border-radius: 8px; box-shadow: 0 0 10px rgba(255,255,255,0.5), 0 6px 12px rgba(13,59,102,0.12); }
    .back-to-top {
        right: 14px;
        bottom: 14px;
        width: 42px;
        height: 42px;
        font-size: 16px;
    }

    /* Keep the hero two-column but make the right column smaller and scale content; use minmax to avoid overflow */
    .hero-grid { grid-template-columns: minmax(0, 53%) minmax(0, 43%); gap: 4%; }

    /* If the viewport is very narrow, scale the entire hero grid down so the desktop layout is preserved */
    .hero-grid.should-scale {
        transform: none;
        width: 100%;
    }
    .hero-content { padding-right: 6px; }
    .hero-content h1 { font-size: clamp(14px, 5vw, 19px); line-height: 1.08; }
    .greeting { font-size: 9.5px; }
    .summary { font-size: 10px; line-height: 1.45; color: var(--text-muted); max-width: 100%; }

    /* Profile card and avatar reduced so it doesn't force overflow */
    .profile-card { padding: 8px; max-width: 100%; box-sizing: border-box; overflow: hidden; border-radius: 10px; }
    .avatar-orbit { width: 90px; height: 90px; }
    .avatar { width: 100%; height: 100%; }
    .orbit { width: 112px; height: 112px; top: -11px; left: -11px; }
    .rocket { width: 24px; }

    /* Keep Resources as a compact 3-column desktop-style grid on phones */
    .cards-section { padding-top: 14px; padding-bottom: 14px; }
    .cards-section .section-header { margin-bottom: 14px; }
    .section-header h2 { font-size: 18px; }
    .cards-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
    .card-item { min-height: 160px; padding: 6px; gap: 7px; border-radius: 8px; justify-content: flex-start; }
    .card-img { height: 58px; padding: 3px; border-radius: 5px; }
    .card-title { font-size: 7.8px; line-height: 1.35; margin-top: 2px; }
    .card-btn { margin-top: 4px; padding: 5px 8px; font-size: 7.8px; border-radius: 5px; border-width: 1px; }

    /* Reduce large vertical gaps between sections on phones */
    .publications { padding: 16px 0; }
    .publications .section-header { margin-bottom: 16px; }
    .pub-group { padding: 14px; border-radius: 8px; }
    .pub-title { font-size: 12px; margin-bottom: 12px; padding-bottom: 6px; }
    .mt-40 { margin-top: 14px; }
    .timeline-list { padding-left: 14px; margin-left: 6px; }
    .timeline-list.full-width .timeline-item { margin-bottom: 12px; }
    .timeline-item { gap: 8px; }
    .timeline-item::before { left: -21px; width: 8px; height: 8px; border-width: 2px; }
    .timeline-item .date { font-size: 7px; padding: 2px 5px; margin-bottom: 4px; }
    .timeline-item h4 { font-size: 8.2px; line-height: 1.35; margin-bottom: 4px; }
    .timeline-item p { font-size: 7px; line-height: 1.35; }
    .paper-image-frame {
        flex-basis: 48px;
        width: 48px;
        height: 36px;
        padding: 1px;
        border-radius: 5px;
    }
    .download-btn { min-width: 20px; height: 20px; font-size: 8px; }

    /* Keep Achievements and Certificates in two columns on phones */
    .publications-certs { padding: 14px 0 22px; }
    .pb-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .pb-column h2 { font-size: 13px; line-height: 1.2; }
    .pb-column .underline { width: 36px; height: 2px; margin-bottom: 12px; }
    .cert-list { gap: 8px; }
    .cert-list li,
    .award-list li {
        padding: 8px;
        border-left-width: 2px;
        border-radius: 5px;
        font-size: 7.8px;
        line-height: 1.35;
    }
    .cert-list li strong,
    .award-list li strong {
        font-size: inherit;
        line-height: inherit;
    }
    .cert-list li a { font-size: 7.2px; margin-top: 4px; }
    .award-year { font-size: 6.6px; padding: 1px 4px; border-radius: 2px; margin-right: 4px; }
    .award-list p { font-size: 7px; line-height: 1.35; margin-top: 4px; }

    /* Keep email readable but clipped to one line; tap shows the full value. */
    .profile-details a[href^="mailto:"] {
        font-size: 8.4px;
        display: inline-block;
        max-width: calc(100% - 24px);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        vertical-align: middle;
        cursor: pointer;
    }

    /* Reduce vertical spacing between hero and resources on phones */
    .hero { padding-top: 22px; padding-bottom: 10px; }

    /* Slightly narrower right column on extra-small phones to give more room for text */
    .hero-grid { grid-template-columns: minmax(0, 53%) minmax(0, 43%); }
}
@media (max-width: 480px) {
    /* Shrink profile contact info to prevent clipping on very small screens */
    .profile-details { display: block; width: 100%; margin: 0; padding: 0 0 0 6px; }
    .profile-details li { margin-bottom: 8px; gap: 5px; padding: 4px 0; align-items: center; min-width: 0; }
    .detail-icon-img { width: 16px; height: 16px; }
    .detail-text { font-size: 8.4px; line-height: 1.2; min-width: 0; }
    .profile-details a.detail-text { font-size: 8.4px; }
    .profile-details a[href^="mailto:"].detail-text {
        font-size: 8.4px;
        max-width: calc(100% - 24px);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}