/* ==============================================
   ECHODATAGRIDAPEX - Responsive Design
   ============================================== */

/* Tablet Landscape (1024px and below) */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }

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

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

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

    .stat-item:nth-child(2)::after {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .feature-row {
        gap: 32px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .timeline-item {
        gap: 32px;
    }
}

/* Tablet Portrait (768px and below) */
@media (max-width: 768px) {
    h1 { font-size: clamp(2rem, 8vw, 3rem); }
    h2 { font-size: clamp(1.5rem, 6vw, 2.25rem); }

    .nav-menu {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        gap: 4px;
        height: calc(100vh - 70px);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 14px 18px;
        font-size: 1.1rem;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        padding: 100px 20px 60px;
        min-height: 90vh;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 32px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }

    .btn {
        padding: 14px 24px;
        font-size: 0.9rem;
        justify-content: center;
    }

    .section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

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

    .feature-row {
        grid-template-columns: 1fr;
        gap: 32px;
        margin-bottom: 60px;
    }

    .feature-row:nth-child(even) {
        direction: ltr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .stat-item:not(:last-child)::after {
        display: none;
    }

    .stat-item {
        padding: 32px 24px;
        border-bottom: 1px solid var(--border-color);
    }

    .stat-item:last-child {
        border-bottom: none;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .footer-legal {
        justify-content: center;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 16px;
        padding-left: 48px;
    }

    .timeline-item::before {
        left: 20px;
    }

    .timeline-item:nth-child(odd) .timeline-content {
        text-align: left;
    }

    .app-showcase {
        padding: 24px;
    }

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

    .contact-form,
    .contact-info {
        padding: 24px;
    }

    .legal-section {
        padding: 24px;
    }

    .legal-toc {
        position: static;
        padding: 24px;
    }

    .page-header {
        padding: 140px 0 60px;
    }

    .marquee-item {
        font-size: 0.95rem;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

    .container {
        padding: 0 16px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .nav-logo {
        font-size: 1rem;
    }

    .nav-logo svg {
        width: 28px;
        height: 28px;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 6px 14px;
    }

    .card {
        padding: 24px;
    }

    .card-icon {
        width: 48px;
        height: 48px;
    }

    .card-icon svg {
        width: 24px;
        height: 24px;
    }

    .card-title {
        font-size: 1.15rem;
    }

    .form-input,
    .form-textarea,
    .form-select {
        padding: 12px 14px;
        font-size: 0.9rem;
    }

    .contact-item {
        gap: 12px;
        padding: 16px 0;
    }

    .contact-icon {
        width: 36px;
        height: 36px;
    }

    .contact-icon svg {
        width: 16px;
        height: 16px;
    }
}

/* Large Desktop (1440px and above) */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }

    .section {
        padding: 120px 0;
    }
}

/* Ultra Wide (1920px and above) */
@media (min-width: 1920px) {
    html {
        font-size: 18px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .particles,
    .bg-grid,
    .bg-glow,
    .footer,
    .btn {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        padding: 20px 0;
        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;
    }

    .bg-grid,
    .bg-glow,
    .particles {
        display: none;
    }
}