/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #e2e8f0;
    overflow-x: hidden;
    background: #000000;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
.gradient-text {
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 8s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1rem;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #a0aec0;
    text-align: center;
    margin-bottom: 4rem;
    font-weight: 400;
}

.lead {
    font-size: 1.1rem;
    font-weight: 500;
    color: #cbd5e0;
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: #8dc63f;
    color: #000000;
    box-shadow: 0 4px 20px rgba(141, 198, 63, 0.3);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(141, 198, 63, 0.5);
    background: #6ab82f;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
    transform: translateY(-2px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(141, 198, 63, 0.3);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.98);
    box-shadow: 0 2px 20px rgba(141, 198, 63, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: #e2e8f0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #8dc63f;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 100%);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #8dc63f;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(141, 198, 63, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(141, 198, 63, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(141, 198, 63, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><polygon points="36,34 6,34 6,4 36,4"/></g></g></svg>');
    opacity: 0.4;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1.5rem;
    font-weight: 400;
    animation: fadeInUp 1s ease-out;
}

.hero-description {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 1.2s ease-out;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.hero-social {
    display: flex;
    gap: 1rem;
}

.hero-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.hero-social a:hover {
    transform: translateY(-3px) scale(1.1);
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 350px;
    height: 350px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 7rem;
    box-shadow:
        0 25px 50px rgba(0, 0, 0, 0.2),
        inset 0 0 40px rgba(255, 255, 255, 0.1);
    animation: pulse 4s ease-in-out infinite;
    position: relative;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    padding: 5px;
    background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

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

/* About Section */
.about {
    padding: 120px 0;
    background: #000000;
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(141, 198, 63, 0.3), transparent);
}

.section-header {
    margin-bottom: 4rem;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: #cbd5e0;
    line-height: 1.8;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #a0aec0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.highlight-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
    padding: 2rem;
    border-radius: 16px;
    border-left: 5px solid transparent;
    border-image: linear-gradient(180deg, #8dc63f, #6ab82f) 1;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.highlight-card:hover {
    transform: translateX(5px);
    box-shadow: 0 8px 25px rgba(141, 198, 63, 0.3);
}

.highlight-card i {
    font-size: 2rem;
    color: #8dc63f;
    margin-bottom: 1rem;
}

.highlight-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
}

.highlight-card p {
    color: #cbd5e0;
    line-height: 1.6;
}

/* Expertise Section */
.expertise {
    padding: 120px 0;
    background: linear-gradient(180deg, #0d0d0d 0%, #000000 100%);
    position: relative;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.expertise-card {
    background: #1a1a1a;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(141, 198, 63, 0.2);
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    background-size: 200% 100%;
    animation: gradient-slide 3s ease infinite;
}

@keyframes gradient-slide {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.expertise-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 25px 50px rgba(141, 198, 63, 0.3);
    border-color: rgba(141, 198, 63, 0.5);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(141, 198, 63, 0.3);
    transition: all 0.3s ease;
}

.expertise-card:hover .card-icon {
    transform: rotate(-5deg) scale(1.1);
    box-shadow: 0 15px 40px rgba(141, 198, 63, 0.5);
}

.card-icon i {
    font-size: 2rem;
    color: #000000;
}

.expertise-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
}

.expertise-card p {
    color: #cbd5e0;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.expertise-card ul {
    list-style: none;
}

.expertise-card ul li {
    color: #a0aec0;
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.expertise-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #8dc63f;
    font-weight: bold;
}

/* Books Section */
.books {
    padding: 120px 0;
    background: #000000;
    position: relative;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.book-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.book-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, #8dc63f, #6ab82f, #4a9e1f);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.book-card:hover::before {
    opacity: 1;
}

.book-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(141, 198, 63, 0.3);
}

.book-cover {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(141, 198, 63, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.book-cover::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 100%);
}

.book-card:hover .book-cover {
    transform: scale(1.1) rotate(-3deg);
    box-shadow: 0 15px 40px rgba(141, 198, 63, 0.5);
}

.book-cover i {
    font-size: 2.2rem;
    color: #000000;
    position: relative;
    z-index: 1;
}

.book-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.book-description {
    color: #cbd5e0;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.book-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.book-category {
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 100%);
    color: #000000;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(141, 198, 63, 0.3);
    transition: all 0.3s ease;
}

.book-card:hover .book-category {
    box-shadow: 0 6px 15px rgba(141, 198, 63, 0.5);
    transform: scale(1.05);
}

.book-year {
    color: #a0aec0;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Speaking Section */
.speaking {
    padding: 120px 0;
    background: linear-gradient(180deg, #0d0d0d 0%, #000000 100%);
    position: relative;
}

.speaking-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.speaking-topics h3,
.speaking-engagements h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 2rem;
}

.topics-grid {
    display: grid;
    gap: 1.5rem;
}

.topic-card {
    background: #1a1a1a;
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid #8dc63f;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.topic-card i {
    font-size: 1.5rem;
    color: #8dc63f;
    margin-bottom: 1rem;
}

.topic-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.8rem;
}

.topic-card p {
    color: #cbd5e0;
    font-size: 0.95rem;
    line-height: 1.6;
}

.engagement-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.engagement-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.engagement-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.engagement-icon i {
    font-size: 1.2rem;
    color: #000000;
}

.engagement-details h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.engagement-details p {
    color: #cbd5e0;
    line-height: 1.6;
}

.speaking-cta {
    background: #1a1a1a;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(141, 198, 63, 0.2);
}

.speaking-cta p {
    font-style: italic;
    color: #cbd5e0;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: #000000;
    position: relative;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
    padding: 2.5rem;
    border-radius: 20px;
    border: 2px solid rgba(141, 198, 63, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(141, 198, 63, 0.3);
    border-color: rgba(141, 198, 63, 0.5);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 50%, #4a9e1f 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(141, 198, 63, 0.3);
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
    transform: rotate(-5deg) scale(1.1);
    box-shadow: 0 15px 40px rgba(141, 198, 63, 0.5);
}

.contact-icon i {
    font-size: 1.6rem;
    color: #000000;
}

.contact-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.contact-card p {
    color: #a0aec0;
    margin-bottom: 1rem;
}

.contact-link {
    color: #8dc63f;
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: #6ab82f;
}

.contact-form-section h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    color: #e2e8f0;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 18px;
    border: 2px solid rgba(141, 198, 63, 0.3);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #1a1a1a;
    color: #e2e8f0;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #8dc63f;
    box-shadow: 0 0 0 3px rgba(141, 198, 63, 0.2);
    transform: translateY(-2px);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn-primary {
    width: 100%;
    justify-content: center;
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 100%);
    color: #000000;
    font-weight: 700;
    padding: 16px 32px;
    box-shadow: 0 4px 20px rgba(141, 198, 63, 0.3);
    border: none;
    cursor: pointer;
}

.contact-form .btn-primary:hover {
    box-shadow: 0 8px 30px rgba(141, 198, 63, 0.5);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #000000 0%, #0d0d0d 100%);
    color: white;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid rgba(141, 198, 63, 0.2);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(141, 198, 63, 0.5), transparent);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: linear-gradient(135deg, #8dc63f 0%, #6ab82f 100%);
    border-color: transparent;
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 8px 20px rgba(141, 198, 63, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(0, 0, 0, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(141, 198, 63, 0.2);
        backdrop-filter: blur(10px);
        padding: 2rem 0;
        gap: 1rem;
        border-top: 1px solid rgba(141, 198, 63, 0.3);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .image-placeholder {
        width: 250px;
        height: 250px;
        font-size: 4rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stats {
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 1rem;
    }

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

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

    .speaking-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

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

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

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .expertise-card,
    .book-card,
    .contact-card {
        padding: 1.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .speaking-cta p {
        font-size: 1rem;
    }
}

/* Animation for scroll reveal */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.mb-4 {
    margin-bottom: 2rem;
}