/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --container-padding: 1.25rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        padding-right: 0;
    }
    
    .hero-illustration {
        height: 300px;
    }
    
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --spacing-3xl: 3rem;
        --spacing-2xl: 2.5rem;
    }
    
    html {
        font-size: 14px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    /* Header */
    .nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--color-bg);
        padding: var(--spacing-xl) var(--spacing-lg);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
        z-index: 999;
    }
    
    .nav.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .nav-list a {
        display: block;
        width: 100%;
        padding: var(--spacing-sm);
    }
    
    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translateY(8px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-8px);
    }
    
    /* Hero */
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .hero-illustration {
        height: 250px;
    }
    
    /* Sections */
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-lg);
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --container-padding: 0.75rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* Desktop Large */
@media (min-width: 1440px) {
    :root {
        --container-max-width: 1320px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
}