/* ============================================
   CSS Variables & Theme
   ============================================ */
:root {
    --primary: #1e3a5f;
    --primary-light: #2d5a8e;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #dbeafe;

    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --text: #334155;
    --text-light: #64748b;
    --heading: #0f172a;

    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
    --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08), 0 12px 32px rgba(0, 0, 0, 0.06);

    --nav-bg: rgba(255, 255, 255, 0.85);
    --nav-border: rgba(0, 0, 0, 0.06);

    --hero-gradient: linear-gradient(135deg, #eff6ff 0%, #f8fafc 50%, #f0f9ff 100%);

    --radius: 12px;
    --radius-sm: 8px;
    --radius-full: 50%;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary: #93c5fd;
    --primary-light: #60a5fa;
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --accent-light: #1e3a5f;

    --bg: #0f172a;
    --bg-alt: #1e293b;
    --text: #cbd5e1;
    --text-light: #94a3b8;
    --heading: #f1f5f9;

    --card-bg: #1e293b;
    --card-border: #334155;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.15);
    --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.25), 0 12px 32px rgba(0, 0, 0, 0.2);

    --nav-bg: rgba(15, 23, 42, 0.9);
    --nav-border: rgba(255, 255, 255, 0.06);

    --hero-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition), color var(--transition);
}

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

a:hover {
    color: var(--accent-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--heading);
    line-height: 1.2;
    transition: color var(--transition);
}

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    transition: background-color var(--transition);
}

.section-alt {
    background-color: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    border: 2px solid var(--accent);
    color: var(--accent);
    background: transparent;
}

.btn-outline:hover {
    background-color: var(--accent);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: transparent;
    transition: all var(--transition);
}

.navbar.scrolled {
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--nav-border);
    padding: 10px 0;
}

.nav-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 12px;
}

.nav-links a {
    padding: 10px 20px;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
    background-color: var(--accent-light);
}

.nav-actions {
    position: absolute;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    transition: all var(--transition);
    position: relative;
}

.theme-toggle:hover {
    background-color: var(--accent-light);
    color: var(--accent);
}

.theme-toggle .fa-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .fa-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .fa-sun {
    display: block;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition);
}

.mobile-menu-btn:hover {
    background-color: var(--accent-light);
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--hero-gradient);
    padding: 120px 24px 60px;
    transition: background var(--transition-slow);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
    animation: float 8s ease-in-out infinite;
}

[data-theme="dark"] .hero-shape {
    opacity: 0.06;
}

.hero-shape-1 {
    width: 550px;
    height: 550px;
    background: var(--accent);
    top: -150px;
    right: -100px;
    animation-delay: 0s;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    bottom: -100px;
    left: -50px;
    animation-delay: -3s;
}

.hero-shape-3 {
    width: 250px;
    height: 250px;
    background: var(--accent);
    top: 40%;
    left: 60%;
    animation-delay: -5s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(80px, -60px) scale(1.1); }
    50% { transform: translate(-50px, 40px) scale(0.9); }
    75% { transform: translate(40px, 30px) scale(1.05); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 680px;
}

.hero-avatar {
    width: 400px;
    height: 400px;
    margin: 0 auto 28px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid var(--card-bg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    transition: transform var(--transition);
}

.hero-avatar:hover {
    transform: scale(1.05);
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-name {
    font-size: 3.25rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.hero-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 28px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.hero-socials {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.hero-socials a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-light);
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    transition: all var(--transition);
    font-size: 1rem;
}

.hero-socials a:hover {
    color: #ffffff;
    background-color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-3px);
}

.scroll-indicator {
    display: none;
}

/* ============================================
   Section Floating Shapes
   ============================================ */
.section-decorated {
    position: relative;
    overflow: hidden;
}

.section-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.section-decorated .container {
    position: relative;
    z-index: 1;
}

.section-shape {
    position: absolute;
    opacity: 0.07;
}

[data-theme="dark"] .section-shape {
    opacity: 0.04;
}

/* Shape types */
.shape-circle {
    border-radius: 50%;
    background: var(--accent);
}

.shape-square {
    border-radius: 8px;
    background: var(--primary);
}

.shape-diamond {
    background: var(--accent);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.shape-triangle {
    background: var(--primary);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
}

.shape-hexagon {
    background: var(--accent);
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

.shape-ring {
    border-radius: 50%;
    background: transparent;
    border: 4px solid var(--accent);
    opacity: 0.1;
}

[data-theme="dark"] .shape-ring {
    opacity: 0.05;
}

/* Float variations */
@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-50px, 60px) scale(1.08); }
    66% { transform: translate(70px, -40px) scale(0.92); }
}

@keyframes drift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(70px, -50px) scale(1.06); }
    50% { transform: translate(-40px, 60px) scale(0.94); }
    75% { transform: translate(-60px, -30px) scale(1.04); }
}

/* About shapes */
.shape-a1 {
    width: 300px;
    height: 300px;
    top: -80px;
    right: -60px;
    animation: float 10s ease-in-out infinite;
}

.shape-a2 {
    width: 200px;
    height: 200px;
    bottom: -40px;
    left: -40px;
    animation: drift 12s ease-in-out infinite;
    animation-delay: -4s;
}

.shape-a3 {
    width: 120px;
    height: 120px;
    top: 50%;
    left: 55%;
    animation: float2 9s ease-in-out infinite;
    animation-delay: -2s;
}

.shape-a4 {
    width: 160px;
    height: 160px;
    top: 10%;
    left: 15%;
    animation: float 11s ease-in-out infinite;
    animation-delay: -6s;
}

/* Expertise shapes */
.shape-e1 {
    width: 280px;
    height: 280px;
    top: -60px;
    left: -80px;
    animation: float 9s ease-in-out infinite;
    animation-delay: -2s;
}

.shape-e2 {
    width: 200px;
    height: 200px;
    top: 15%;
    right: -50px;
    animation: float2 11s ease-in-out infinite;
}

.shape-e3 {
    width: 250px;
    height: 250px;
    bottom: -70px;
    right: 10%;
    animation: drift 13s ease-in-out infinite;
    animation-delay: -6s;
}

.shape-e4 {
    width: 140px;
    height: 140px;
    bottom: 20%;
    left: 10%;
    animation: float 10s ease-in-out infinite;
    animation-delay: -3s;
}

.shape-e5 {
    width: 100px;
    height: 100px;
    top: 45%;
    left: 45%;
    animation: float2 8s ease-in-out infinite;
    animation-delay: -5s;
}

/* Certifications shapes */
.shape-c1 {
    width: 260px;
    height: 260px;
    top: -60px;
    right: -50px;
    animation: drift 10s ease-in-out infinite;
    animation-delay: -3s;
}

.shape-c2 {
    width: 300px;
    height: 300px;
    bottom: -100px;
    left: -80px;
    animation: float 12s ease-in-out infinite;
    animation-delay: -5s;
}

.shape-c3 {
    width: 150px;
    height: 150px;
    top: 30%;
    left: 60%;
    animation: float2 9s ease-in-out infinite;
    animation-delay: -1s;
}

.shape-c4 {
    width: 120px;
    height: 120px;
    top: 10%;
    left: 5%;
    animation: float 11s ease-in-out infinite;
    animation-delay: -7s;
}

/* Contact shapes */
.shape-ct1 {
    width: 280px;
    height: 280px;
    top: -70px;
    left: -50px;
    animation: drift 10s ease-in-out infinite;
}

.shape-ct2 {
    width: 220px;
    height: 220px;
    bottom: -60px;
    right: -40px;
    animation: float 9s ease-in-out infinite;
    animation-delay: -4s;
}

.shape-ct3 {
    width: 150px;
    height: 150px;
    top: 35%;
    right: 25%;
    animation: float2 11s ease-in-out infinite;
    animation-delay: -2s;
}

.shape-ct4 {
    width: 130px;
    height: 130px;
    bottom: 15%;
    left: 20%;
    animation: float 8s ease-in-out infinite;
    animation-delay: -6s;
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.02rem;
    line-height: 1.75;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-text strong {
    color: var(--heading);
    font-weight: 600;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.highlight-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
}

.highlight-card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateX(4px);
}

.highlight-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    color: var(--accent);
    font-size: 1.15rem;
    transition: all var(--transition);
}

.highlight-card:hover .highlight-icon {
    background: var(--accent);
    color: #ffffff;
}

.highlight-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.highlight-card p {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ============================================
   Expertise Section
   ============================================ */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.expertise-card {
    padding: 36px 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
    text-align: center;
}

.expertise-card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-6px);
}

.expertise-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    background: var(--accent-light);
    color: var(--accent);
    font-size: 1.5rem;
    transition: all var(--transition);
}

.expertise-card:hover .expertise-icon {
    background: var(--accent);
    color: #ffffff;
    transform: scale(1.1);
}

.expertise-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.expertise-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.65;
}

/* ============================================
   Certifications Section
   ============================================ */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cert-card {
    padding: 28px 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    text-align: center;
    transition: all var(--transition);
}

.cert-card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-4px);
}

.cert-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.cert-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.4;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    color: var(--accent);
    font-size: 1.1rem;
    transition: all var(--transition);
}

.contact-item:hover .contact-icon {
    background: var(--accent);
    color: #ffffff;
}

.contact-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.contact-item a,
.contact-item p {
    font-size: 1rem;
    font-weight: 500;
    color: var(--heading);
    transition: color var(--transition);
}

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

.contact-socials {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

.social-link:hover {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* QR Code */
.qr-card {
    padding: 40px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    text-align: center;
}

.qr-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.qr-card > p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 28px;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}

.qr-code-container canvas,
.qr-code-container img {
    border-radius: var(--radius-sm);
}

.qr-card .btn {
    margin-top: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--card-border);
    background: var(--bg);
    transition: background-color var(--transition);
}

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

.footer-content p {
    font-size: 0.85rem;
    color: var(--text-light);
}

.back-to-top {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-light);
    border: 1px solid var(--card-border);
    transition: all var(--transition);
}

.back-to-top:hover {
    color: #ffffff;
    background: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* ============================================
   Scroll Reveal Animation
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.expertise-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.expertise-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.expertise-grid .reveal:nth-child(4) { transition-delay: 0.3s; }
.expertise-grid .reveal:nth-child(5) { transition-delay: 0.4s; }
.expertise-grid .reveal:nth-child(6) { transition-delay: 0.5s; }

.cert-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.cert-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.cert-grid .reveal:nth-child(4) { transition-delay: 0.3s; }

/* ============================================
   Responsive Design
   ============================================ */

/* Tablets & small laptops */
@media (max-width: 1024px) {
    .section {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

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

/* Tablets portrait */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 4px;
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
        transition: right var(--transition);
        z-index: 999;
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links a {
        padding: 12px 16px;
        font-size: 1.1rem;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .hero-title {
        font-size: 1.1rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .section {
        padding: 64px 0;
    }
}

/* Mobile phones */
@media (max-width: 480px) {
    .hero {
        padding: 100px 20px 48px;
    }

    .hero-avatar {
        width: 280px;
        height: 280px;
    }

    .hero-name {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .section-header h2 {
        font-size: 1.65rem;
    }

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

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

    .cert-card {
        padding: 20px;
    }

    .contact-socials {
        flex-direction: column;
    }

    .social-link {
        justify-content: center;
    }

    .qr-card {
        padding: 28px 20px;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    .theme-toggle,
    .mobile-menu-btn,
    .scroll-indicator,
    .back-to-top,
    .hero-bg {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    .section {
        padding: 40px 0;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }

    body {
        color: #000;
        background: #fff;
    }
}