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

/* Tablet Styles (768px and below) */
@media (max-width: 768px) {
    /* Typography */
    html {
        font-size: 14px;
    }

    /* Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: rgba(10, 25, 47, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-md);
        transition: left var(--transition-normal);
    }

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

    .nav-link {
        font-size: 1.5rem;
    }

    /* Hero */
    .hero {
        padding: var(--spacing-lg) 0;
        min-height: 90vh;
    }

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

    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }

    /* Timeline */
    .timeline::before {
        left: 0;
    }

    .timeline-item {
        padding-left: 2rem;
    }

    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: var(--spacing-sm);
    }

    .airtable-embed {
        min-height: 600px;
    }

    /* About Stats */
    .about-stats {
        grid-template-columns: 1fr;
    }

    /* Ventures Grid */
    .ventures-grid {
        grid-template-columns: 1fr;
    }

    /* Education Grid */
    .education-grid {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer .container {
        flex-direction: column;
        text-align: center;
    }

    /* Sections */
    section {
        padding: var(--spacing-lg) 0;
    }
}

/* Mobile Styles (480px and below) */
@media (max-width: 480px) {
    /* Typography */
    html {
        font-size: 13px;
    }

    /* Container */
    .container {
        padding: 0 var(--spacing-sm);
    }

    /* Buttons */
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }

    /* Timeline */
    .timeline-item {
        padding-left: 1.5rem;
    }

    .timeline-content {
        padding: var(--spacing-sm);
    }

    /* Cards */
    .venture-card,
    .education-card,
    .pub-item {
        padding: var(--spacing-sm);
    }

    /* Contact Form */
    .contact-form-container {
        padding: var(--spacing-xs);
    }

    .airtable-embed {
        min-height: 650px;
    }

    /* Videos Grid */
    .videos-grid {
        grid-template-columns: 1fr;
    }

    /* Navigation Toggle Animation */
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Large Desktop (1400px and above) */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }

    html {
        font-size: 18px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero-cta,
    .contact-form-container,
    .footer,
    .hero-scroll {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }

    section {
        page-break-inside: avoid;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark Mode Support (if system preference changes) */
@media (prefers-color-scheme: light) {
    /* This design is optimized for dark mode,
       but you can add light mode overrides here if needed */
}