/* ============================================
   Lumixsa AI - Responsive Stylesheet
   Mobile-First Approach
   ============================================ */

/* Mobile (up to 639px) */
@media (max-width: 639px) {
    :root {
        --container-padding: 1rem;
        --spacing-4xl: 4rem;
        --spacing-3xl: 3rem;
    }

    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    h4 { font-size: var(--font-size-lg); }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-nav {
        display: block;
    }

    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }

    .hero h1 {
        font-size: var(--font-size-3xl);
    }

    .hero p {
        font-size: var(--font-size-base);
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .btn-lg {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }
}

/* Tablet (640px - 1023px) */
@media (min-width: 640px) and (max-width: 1023px) {
    :root {
        --container-padding: 1.5rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-nav {
        display: block;
    }

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .hero h1 {
        font-size: var(--font-size-4xl);
    }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    :root {
        --container-padding: 2rem;
    }

    .mobile-menu-btn {
        display: none;
    }

    .mobile-nav {
        display: none !important;
    }
}

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
    .container {
        padding: 0 2rem;
    }
}

/* Extra Large (1536px and up) */
@media (min-width: 1536px) {
    :root {
        --container-max: 1400px;
    }
}

/* Specific Component Responsive Styles */

/* Tools Grid */
@media (max-width: 1023px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 639px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* Blog Grid */
@media (max-width: 1023px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 639px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

/* Chatbot */
@media (max-width: 639px) {
    .chatbot-container {
        width: 100%;
        right: 0;
        left: 0;
        bottom: 0;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    }

    .chatbot-toggle {
        right: var(--spacing-md);
        bottom: var(--spacing-md);
    }
}

/* Tool Pages */
@media (max-width: 1023px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }

    .tool-sidebar {
        order: -1;
    }
}

/* Article Layout */
@media (max-width: 1023px) {
    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        display: none;
    }
}

/* Contact Page */
@media (max-width: 1023px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* About Page */
@media (max-width: 1023px) {
    .about-hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-hero-image {
        order: -1;
    }
}

/* Sitemap */
@media (max-width: 1023px) {
    .sitemap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 639px) {
    .sitemap-grid {
        grid-template-columns: 1fr;
    }
}

/* Navigation adjustments for very small screens */
@media (max-width: 380px) {
    .logo-text {
        display: none;
    }

    .navbar {
        padding: var(--spacing-sm) 0;
    }
}

/* Landscape mode on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 40px;
    }

    .mobile-nav {
        max-height: 80vh;
        overflow-y: auto;
    }
}

/* High DPI / Retina displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-circle {
        -webkit-font-smoothing: antialiased;
    }
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .chatbot-container,
    .chatbot-toggle,
    .mobile-menu-btn,
    .btn {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        padding: 2rem 0;
    }

    a {
        text-decoration: underline;
    }
}

/* Reduced motion preference */
@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 (already dark by default, but for system preference) */
@media (prefers-color-scheme: dark) {
    /* Already dark theme by default */
}