/* ---- ABOUT PAGE SPECIFIC STYLES ---- */
.about-page { padding-top: 100px; }

/* Hero Banner */
.about-hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white; padding: 5rem 0; position: relative; overflow: hidden;
}
.about-hero::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(237,28,36,0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(0,157,1,0.1) 0%, transparent 50%);
}
.about-hero-grid {
    display: grid; grid-template-columns: 1fr 2fr; gap: 4rem;
    align-items: center; position: relative; z-index: 1;
}
.avatar-wrapper { text-align: center; }
.avatar-ring {
    width: 220px; height: 220px; border-radius: 50%; margin: 0 auto 1.5rem;
    border: 4px solid var(--primary-red); padding: 6px;
    background: linear-gradient(135deg, var(--primary-red), var(--primary-green));
    box-shadow: 0 0 40px rgba(237,28,36,0.4); overflow: hidden;
}
.avatar-ring img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.avatar-name { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: white; letter-spacing: 2px; }
.avatar-title { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-top: 0.5rem; }
.about-hero-content h1 { font-family: var(--font-display); font-size: 2.5rem; font-weight: 900; color: white; line-height: 1.2; margin-bottom: 1rem; }
.about-hero-content h1 span.red { color: var(--primary-red); }
.about-hero-content h1 span.green { color: var(--primary-green); }
.hero-badge {
    display: inline-block; background: rgba(237,28,36,0.2); border: 1px solid var(--primary-red);
    color: var(--primary-red); padding: 0.4rem 1rem; border-radius: 20px;
    font-size: 0.85rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 1.5rem;
}
.about-hero-desc { font-size: 1.1rem; color: rgba(255,255,255,0.8); line-height: 1.8; max-width: 650px; }
.hero-stats { display: flex; gap: 3rem; margin-top: 2rem; }
.hero-stat { text-align: center; }
.hero-stat-num { font-family: var(--font-display); font-size: 2.2rem; font-weight: 900; color: var(--primary-green); line-height: 1; }
.hero-stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 1px; margin-top: 0.3rem; }

/* Section labels */
.section-label { font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 3px; text-transform: uppercase; color: var(--primary-red); margin-bottom: 0.5rem; }
.section-heading { font-family: var(--font-display); font-size: 2.2rem; font-weight: 800; margin-bottom: 3rem; }
.highlight-red { color: var(--primary-red); }
.highlight-green { color: var(--primary-green); }

/* Timeline */
.timeline { position: relative; padding-left: 2.5rem; }
.timeline::before { content: ''; position: absolute; left: 9px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--primary-red), var(--primary-green)); }
.timeline-item { position: relative; margin-bottom: 2.5rem; }
.timeline-item::before {
    content: ''; position: absolute; left: -2.5rem; top: 4px; width: 22px; height: 22px;
    margin-left: -1px;
    border-radius: 50%; background: var(--primary-red); border: 3px solid white; box-shadow: 0 0 10px rgba(237,28,36,0.5);
    z-index: 1;
}
.timeline-item.green::before { background: var(--primary-green); box-shadow: 0 0 10px rgba(0,157,1,0.5); }
.timeline-date { font-size: 0.85rem; font-weight: 700; color: var(--primary-red); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.3rem; }
.timeline-item.green .timeline-date { color: var(--primary-green); }
.timeline-role { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; margin-bottom: 0.3rem; }
.timeline-company { font-weight: 600; color: var(--text-muted); margin-bottom: 0.5rem; }
.timeline-desc { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

/* Skills */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.skill-category { background: white; border-radius: 12px; padding: 1.8rem; box-shadow: var(--shadow-sm); border-top: 4px solid var(--primary-red); transition: var(--transition); }
.skill-category:nth-child(even) { border-top-color: var(--primary-green); }
.skill-category:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.skill-cat-title { font-family: var(--font-display); font-size: 1rem; font-weight: 800; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 1px; text-align: center; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tag { background: var(--bg-color-alt); padding: 4px 12px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; color: var(--text-color); }

/* Contact Section */
.contact-section { background: linear-gradient(135deg, #1a1a2e, #16213e); color: white; padding: 4rem 0; }
.contact-section .section-heading { color: white; }
.contact-grid { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; justify-content: center; }
.contact-card {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px; padding: 0.8rem 1.5rem; transition: var(--transition);
    text-decoration: none; color: white; display: flex; align-items: center; gap: 0.8rem; cursor: pointer;
}
.contact-card:hover { background: rgba(255,255,255,0.1); border-color: var(--primary-red); transform: translateY(-3px); }
.contact-card.zalo:hover { border-color: #0068ff; }
.contact-card.youtube:hover { border-color: #FF0000; }
.contact-icon { font-size: 1.5rem; flex-shrink: 0; }
.contact-info { display: flex; flex-direction: column; }
.contact-label { font-size: 0.7rem; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 1.5px; font-family: var(--font-body); }
.contact-value { font-weight: 700; font-size: 0.9rem; }
.zalo-qr-wrapper { display: flex; align-items: center; gap: 0.8rem; }
.zalo-qr-img { width: 60px; height: 60px; object-fit: contain; border-radius: 8px; background: white; padding: 4px; }

/* Contact Modals */
.contact-modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8); z-index: 9999;
    justify-content: center; align-items: center; cursor: pointer;
}
.contact-modal-box {
    background: white; border-radius: 16px; padding: 2.5rem 2rem;
    text-align: center; max-width: 520px; width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    animation: modalIn 0.3s ease; cursor: default; position: relative;
}
.modal-close { position: absolute; top: 12px; right: 16px; font-size: 1.5rem; color: #999; cursor: pointer; line-height: 1; }
.modal-close:hover { color: #333; }
.modal-btn {
    display: inline-block; padding: 0.6rem 1.5rem; border-radius: 8px;
    font-weight: 700; font-size: 0.9rem; text-decoration: none; cursor: pointer; border: none; transition: var(--transition);
}
.modal-btn-primary { background: var(--primary-green); color: white; }
.modal-btn-primary:hover { opacity: 0.85; transform: translateY(-2px); }
.modal-btn-secondary { background: #f0f0f0; color: #333; }
.modal-btn-secondary:hover { background: #e0e0e0; }
@keyframes modalIn { from { transform: scale(0.7); opacity: 0; } to { transform: scale(1); opacity: 1; } }

@media (max-width: 768px) {
    .about-hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-stats { justify-content: center; }
    .skills-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .about-hero-content h1 { font-size: 1.8rem; }
}