:root {
    --primary-color: #7C3AED;
    --primary-hover: #8B5CF6;
    --primary-light: #C4B5FD;
    --primary-secondary: #A78BFA;
    --bg-light: #F5F3FF;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --white: #FFFFFF;
    --border-color: #E9D5FF;
    --footer-bg: #111827;
    --success: #22C55E;
    --warning: #F59E0B;
    --error: #EF4444;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --shadow-glow: 0 15px 30px -5px rgba(124, 58, 237, 0.2);
    --border-radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--white);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* Base Components */
.section-bg {
    background-color: var(--bg-light);
}

section {
    padding: 5rem 0;
    overflow-x: hidden;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0.5rem auto 0;
    border-radius: 2px;
    transition: width 0.5s ease;
}

.section-title:hover::after {
    width: 100px;
}

.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid var(--border-color);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-block {
    width: 100%;
}

/* Header */
.header {
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    transition: padding 0.3s ease, background-color 0.3s ease;
}

.header.scrolled {
    padding: 0.5rem 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-dark);
    z-index: 1001;
}

.nav {
    display: flex;
    gap: 2rem;
    transition: all 0.3s ease;
}

.nav a {
    font-weight: 500;
    color: var(--text-gray);
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav a:hover {
    color: var(--primary-color);
}

.nav a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
    z-index: 1001;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    background-color: var(--bg-light);
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.hero-image {
    flex: 1;
    position: relative;
    max-width: 400px;
}

.bg-circle {
    position: absolute;
    top: -5%;
    left: -5%;
    width: 110%;
    height: 110%;
    background-color: var(--primary-light);
    border-radius: 50%;
    z-index: 0;
}

.hero-image img {
    position: relative;
    width: 100%;
    border-radius: 20px;
    z-index: 1;
    box-shadow: var(--shadow-md);
}

.hero-content {
    flex: 1.2;
}

.badge {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.description {
    color: var(--text-gray);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.hero-actions {
    margin-bottom: 2rem;
}

.hero-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-gray);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.contact-item:hover {
    color: var(--primary-color);
}

.contact-item i {
    color: var(--primary-color);
}

/* About / Strengths */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 3rem;
}

.about-image svg {
    width: 100%;
    height: auto;
}

.about-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.about-text p {
    color: var(--text-gray);
    font-size: 1.1rem;
}

.strengths-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.icon-card {
    text-align: center;
    padding: 2.5rem 1.5rem;
}

.icon-wrapper {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.5rem;
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.icon-card:hover .icon-wrapper {
    transform: rotate(360deg) scale(1.1);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

.icon-card h4 {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.icon-card p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 24px;
    width: 2px;
    background-color: var(--primary-color);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 70px;
}

.timeline-icon {
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background-color: var(--white);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 1;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-icon {
    background-color: var(--primary-color);
    color: var(--white);
    box-shadow: var(--shadow-glow);
}

.timeline-content .date {
    display: inline-block;
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    background: var(--primary-light);
    padding: 0.2rem 0.8rem;
    border-radius: 12px;
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    color: var(--text-gray);
    font-weight: 500;
    margin-bottom: 1rem;
}

.timeline-content ul {
    padding-left: 1.2rem;
    color: var(--text-gray);
}

.timeline-content ul li {
    margin-bottom: 0.5rem;
}

/* Languages */
.languages-card {
    max-width: 800px;
    margin: 0 auto;
}

.lang-item {
    margin-bottom: 1.5rem;
}

.lang-item:last-child {
    margin-bottom: 0;
}

.lang-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.lang-name {
    font-weight: 600;
}

.lang-level {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 4px;
    width: 0; /* JS handles animation */
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.contact-form-card h3 {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.info-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.info-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-group h4 {
    margin-bottom: 0.25rem;
}

.info-group p {
    color: var(--text-gray);
}

.map-image {
    margin-top: 2rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-light);
}

/* Animations & Transitions */

/* Hover Lift Effect */
.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(124, 58, 237, 0.3);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(124, 58, 237, 0.5);
}

/* Continuous Floating / Pulsing */
@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

.float-anim {
    animation: float 4s ease-in-out infinite;
}

.float-anim-slow {
    animation: float 6s ease-in-out infinite;
}

.float-anim-fast {
    animation: float 2.5s ease-in-out infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.pulse-anim {
    animation: pulse 3s ease-in-out infinite;
}

@keyframes bounceInfinite {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.bounce-anim-infinite {
    animation: bounceInfinite 2s ease-in-out infinite;
}

@keyframes shadowShrink {
    0%, 100% { transform: scaleX(1); opacity: 0.2; }
    50% { transform: scaleX(0.7); opacity: 0.1; }
}

.shadow-anim {
    animation: shadowShrink 2s ease-in-out infinite;
}

/* Scroll Animations Base Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.animate-on-scroll.anim-left {
    transform: translateX(-50px);
}

.animate-on-scroll.anim-right {
    transform: translateX(50px);
}

/* When In-View */
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translate(0, 0);
}

/* Load Animations (No Scroll Required) */
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.anim-fade-in-left {
    animation: fadeInLeft 1s ease forwards;
}

.anim-fade-in-right {
    animation: fadeInRight 1s ease forwards;
}

/* Stagger Effects */
.stagger-container .stagger-item {
    opacity: 0;
}

.stagger-container.is-visible .stagger-item,
.anim-fade-in-right.stagger-container .stagger-item {
    animation: slideUpFade 0.6s ease forwards;
}

/* Delay generator for stagger */
.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }

@keyframes slideUpFade {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Progress bar fill animation triggered via JS */
.fill-anim.is-filled {
    width: var(--target-width) !important;
    transition: width 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Path Drawing Animation for SVG */
@keyframes drawPath {
    from { stroke-dashoffset: 1000; }
    to { stroke-dashoffset: 0; }
}

.path-anim {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawPath 3s ease forwards;
    animation-delay: 0.5s;
}

/* Ripple Button Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
    opacity: 1;
    transition: width 0.4s ease-out, height 0.4s ease-out, opacity 0.4s ease-out;
}

/* Footer */
.footer {
    background-color: var(--footer-bg);
    color: var(--white);
    padding: 4rem 0 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-col p {
    color: #9CA3AF;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-col a {
    display: block;
    color: #9CA3AF;
    margin-bottom: 0.75rem;
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    text-align: center;
    color: #9CA3AF;
    font-size: 0.9rem;
}

/* Skills & Expertise */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.expertise-card {
    text-align: center;
    padding: 2rem 1.25rem;
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.expertise-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-light), rgba(167, 139, 250, 0.3));
    color: var(--primary-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.expertise-icon svg {
    width: 28px;
    height: 28px;
}

.expertise-card:hover .expertise-icon {
    transform: translateY(-6px) scale(1.08);
    box-shadow: 0 8px 20px rgba(124, 58, 237, 0.3);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--white);
}

.expertise-card h4 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.expertise-card p {
    color: var(--text-gray);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* Responsive for expertise */
@media (max-width: 1024px) {
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .expertise-grid {
        grid-template-columns: 1fr;
    }
}

/* Tools Section */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    max-width: 900px;
    margin: 0 auto;
}

.tool-card {
    text-align: center;
    padding: 1.75rem 1rem;
    position: relative;
    cursor: default;
    overflow: visible;
}

.tool-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.tool-card:hover::after {
    transform: scaleX(1);
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1.5px solid var(--border-color);
}

.tool-icon svg {
    width: 30px;
    height: 30px;
}

.tool-card:hover .tool-icon {
    transform: translateY(-6px) rotate(-5deg);
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(124, 58, 237, 0.3);
}

.tool-card h4 {
    font-size: 0.85rem;
    color: var(--text-dark);
    font-weight: 600;
    transition: color 0.3s ease;
}

.tool-card:hover h4 {
    color: var(--primary-color);
}

/* AI Agents Popup */
.ai-agents-card {
    overflow: hidden;
}

.ai-agents-card .tool-icon,
.ai-agents-card h4 {
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.ai-list {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    padding: 1rem 0.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.ai-agents-card:hover .tool-icon {
    opacity: 0;
    transform: scale(0.5);
}

.ai-agents-card:hover h4 {
    opacity: 0;
}

.ai-agents-card:hover .ai-list {
    opacity: 1;
    pointer-events: auto;
}

.ai-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem;
    border-radius: 6px;
    color: var(--text-dark);
    transition: all 0.2s ease;
    cursor: default;
}

.ai-item:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.ai-item svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.ai-item span {
    font-size: 0.6rem;
    font-weight: 600;
    text-align: center;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

/* Published Work */
.section-subtitle {
    text-align: center;
    color: var(--text-gray);
    font-size: 1.05rem;
    margin-top: -2rem;
    margin-bottom: 2.5rem;
}

.work-filter {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    border: 2px solid var(--border-color);
    background: var(--white);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.work-card {
    display: flex;
    flex-direction: column;
    padding: 1.75rem;
}

.work-card.hidden {
    display: none;
}

.work-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.work-type {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.3rem 0.75rem;
    border-radius: 12px;
}

.fact-check-badge {
    background-color: #FEE2E2;
    color: #DC2626;
}

.article-badge {
    background-color: #DBEAFE;
    color: #2563EB;
}

.work-date {
    font-size: 0.8rem;
    color: var(--text-gray);
}

.work-card h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
    color: var(--text-dark);
}

.work-card p {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
}

.work-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    transition: gap 0.3s ease;
}

.work-link:hover {
    gap: 0.75rem;
}

/* Certifications Section */
.certifications-grid {
    display: flex;
    justify-content: center;
}

.certification-card {
    display: flex;
    gap: 2rem;
    align-items: center;
    max-width: 700px;
    width: 100%;
}

.cert-badge {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cert-badge i {
    font-size: 2rem;
    color: var(--white);
}

.cert-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    color: var(--text-dark);
}

.cert-content h4 {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cert-date {
    font-size: 0.85rem;
    color: var(--text-gray);
    margin-bottom: 0.75rem;
}

.cert-desc {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* Responsive */
@media (max-width: 900px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-contact {
        justify-content: center;
    }

    .hero-actions {
        display: flex;
        justify-content: center;
    }

    .work-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .about-grid,
    .strengths-cards,
    .contact-grid,
    .footer-container {
        grid-template-columns: 1fr;
        flex-direction: column;
    }

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

    .certification-card {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-image {
        max-width: 250px;
        margin: 0 auto;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .mobile-menu-btn {
        display: block;
    }

    .nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        box-shadow: var(--shadow-md);
        z-index: 1000;
        transition: left 0.4s ease;
    }

    .nav.open {
        left: 0;
    }

    .nav a {
        font-size: 1.25rem;
    }

    .timeline-item {
        padding-left: 50px;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-icon {
        width: 34px;
        height: 34px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }
}