/* ===== RESPONSIVE DESIGN ===== */

/* Large screens (1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .hero-content {
        gap: 5rem;
    }
    
    .title-main {
        font-size: 4rem;
    }
    
    .title-subtitle {
        font-size: 2.5rem;
    }
}

/* Medium screens (992px to 1199px) */
@media (max-width: 1199px) {
    .container {
        padding: 0 30px;
    }
    
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .conference-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small screens (768px to 991px) */
@media (max-width: 991px) {
    /* Navigation */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 250px;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: var(--transition);
        z-index: 999;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Hero Section */
    .hero {
        min-height: 90vh;
        padding-top: 5rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .title-main {
        font-size: 2.5rem;
    }
    
    .title-subtitle {
        font-size: 1.75rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-highlights {
        justify-content: center;
        gap: 1rem;
    }
    
    .highlight-item {
        padding: 0.5rem 1rem;
    }
    
    .highlight-item span {
        font-size: 0.8rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .image-container {
        width: 300px;
        height: 300px;
    }
    
    /* About Section */
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-text {
        order: 2;
    }
    
    .about-image {
        order: 1;
    }
    
    .image-stats {
        position: static;
        margin-top: 2rem;
    }
    
    /* Achievements */
    .achievements-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Mentoring */
    .mentoring-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .service-cards {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-info {
        order: 2;
    }
    
    .contact-form {
        order: 1;
    }
}

/* Extra small screens (576px to 767px) */
@media (max-width: 767px) {
    .container {
        padding: 0 20px;
    }
    
    /* Typography */
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    /* Navigation */
    .logo-text {
        font-size: 1.25rem;
    }
    
    .nav-links {
        width: 100%;
        right: -100%;
    }
    
    /* Hero Section */
    .hero {
        padding-top: 4rem;
    }
    
    .title-main {
        font-size: 2rem;
    }
    
    .title-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-highlights {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .image-container {
        width: 250px;
        height: 250px;
    }
    
    /* Sections */
    section {
        padding: 3rem 0;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    /* Expertise */
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-card {
        padding: 2rem;
    }
    
    /* Timeline */
    .achievement-timeline {
        padding-left: 1rem;
    }
    
    .timeline-item {
        padding-left: 2rem;
    }
    
    .timeline-item::before {
        left: -1.5rem;
    }
    
    /* Conference Grid */
    .conference-grid {
        grid-template-columns: 1fr;
    }
    
    /* Topics Grid */
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .topic-item {
        justify-content: center;
        text-align: center;
    }
    
    /* Stats */
    .achievements-stats {
        grid-template-columns: 1fr;
    }
    
    .impact-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Contact */
    .social-icons {
        justify-content: center;
    }
    
    /* Speaking CTA */
    .speaking-cta {
        padding: 2rem;
    }
    
    /* About Philosophy */
    .about-philosophy {
        padding: 1.5rem;
    }
    
    .about-philosophy p {
        font-size: 1.1rem;
    }
}

/* Mobile screens (480px and below) */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    /* Navigation */
    .navbar {
        padding: 0.75rem 0;
    }
    
    .logo-text {
        font-size: 1.1rem;
    }
    
    /* Hero */
    .title-main {
        font-size: 1.75rem;
    }
    
    .title-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
    }
    
    .image-container {
        width: 200px;
        height: 200px;
    }
    
    /* Cards */
    .expertise-card,
    .conference-card,
    .service-card {
        padding: 1.5rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    /* Buttons */
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    /* Form */
    .contact-form {
        padding: 2rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.75rem;
    }
    
    /* About */
    .about-intro h3 {
        font-size: 1.5rem;
    }
    
    .about-intro p,
    .hero-description {
        font-size: 0.95rem;
    }
    
    /* Stats */
    .stat-number {
        font-size: 2rem;
    }
    
    .impact-number {
        font-size: 1.75rem;
    }
    
    /* Social Icons */
    .social-icons a {
        width: 40px;
        height: 40px;
    }
    
    .social-icons i {
        font-size: 1rem;
    }
    
    /* Footer */
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-social {
        gap: 0.75rem;
    }
}

/* Landscape phone orientation */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        min-height: 70vh;
    }
    
    .hero-content {
        gap: 2rem;
    }
    
    .image-container {
        width: 200px;
        height: 200px;
    }
}

/* Print styles */
@media print {
    .navbar,
    .hamburger,
    .scroll-indicator,
    .hero-cta,
    .speaking-cta,
    .mentoring-cta,
    .contact-form,
    .social-icons,
    .footer-social {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    section {
        padding: 2rem 0;
        break-inside: avoid;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .expertise-grid,
    .conference-grid {
        grid-template-columns: 1fr;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .section-title {
        font-size: 18pt;
    }
    
    .title-main {
        font-size: 24pt;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-img,
    .about-img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-down {
        animation: none;
    }
}

/* Dark mode support (if browser supports it) */
@media (prefers-color-scheme: dark) {
    /* This would override colors for users who prefer dark mode */
    /* Currently keeping light theme as default for professional look */
}

/* Focus styles for keyboard navigation */
@media (any-hover: none) {
    .btn:hover,
    .nav-link:hover,
    .expertise-card:hover,
    .conference-card:hover {
        transform: none;
    }
}

/* Touch device optimizations */
@media (hover: none) {
    .btn,
    .expertise-card,
    .conference-card,
    .service-card {
        transition: none;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
}