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

/* ===== Breakpoints ===== */
/* 
  Mobile: 320px - 767px
  Tablet: 768px - 1023px
  Desktop: 1024px+
*/

/* ===== Mobile First Approach ===== */

/* ===== Large Desktop (1200px+) ===== */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .business-grid,
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .clients-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== Desktop (1024px - 1199px) ===== */
@media (max-width: 1199px) and (min-width: 1024px) {
    .container {
        max-width: 1024px;
    }
    
    .business-grid,
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .clients-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== Tablet (768px - 1023px) ===== */
@media (max-width: 1023px) and (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Navigation */
    .nav-menu {
        gap: var(--spacing-lg);
    }
    
    /* Typography */
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    /* Grid Layouts */
    .business-grid,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }
    
    .advantages-grid,
    .features-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    /* Hero Section */
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 200px;
    }
    
    /* Page Header */
    .page-header {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    /* Case Page - Project Highlights */
    .project-highlights {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .highlight-item {
        padding: var(--spacing-sm);
    }
}

/* ===== Mobile (320px - 767px) ===== */
@media (max-width: 767px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: var(--spacing-2xl) 0;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu .nav-item {
        margin: var(--spacing-sm) 0;
    }
    
    .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .nav-link.active {
        background: var(--primary-gradient);
        color: var(--white);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        transform: scale(1.05);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Typography */
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    h1 {
        font-size: var(--font-size-2xl);
    }
    
    h2 {
        font-size: var(--font-size-xl);
    }
    
    h3 {
        font-size: var(--font-size-lg);
    }
    
    /* Sections */
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .page-header {
        padding: var(--spacing-xl) 0;
    }
    
    .section-title {
        margin-bottom: var(--spacing-xl);
    }
    
    /* Grid Layouts */
    .business-grid,
    .products-grid,
    .clients-grid,
    .cases-grid,
    .advantages-grid,
    .features-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    /* Buttons */
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
    }
    
    /* Cards */
    .card {
        padding: var(--spacing-lg);
    }
    
    /* Footer */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    /* Spacing Adjustments */
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .mt-5, .mb-5 {
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    /* Case Page - Project Highlights */
    .project-highlights {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .highlight-item {
        padding: var(--spacing-sm);
    }
    
    .highlight-item h4 {
        font-size: var(--font-size-base);
    }
    
    .highlight-item p {
        font-size: var(--font-size-xs);
    }
    
    /* Success Metrics */
    .metrics-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .metric-item {
        padding: var(--spacing-lg);
    }
    
    .metric-number {
        font-size: var(--font-size-3xl);
    }
    
    .metric-item h3 {
        font-size: var(--font-size-base);
    }
    
    .metric-item p {
        font-size: var(--font-size-sm);
    }
    
    .case-features li {
        padding: var(--spacing-sm);
        padding-left: var(--spacing-lg);
    }
}

/* ===== Small Mobile (320px - 479px) ===== */
@media (max-width: 479px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Typography */
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    h1 {
        font-size: var(--font-size-xl);
    }
    
    h2 {
        font-size: var(--font-size-lg);
    }
    
    /* Navigation */
    .nav-logo svg {
        width: 150px;
        height: 54px;
    }
    
    .nav-logo .logo-text-main {
        font-size: 16px;
    }
    
    .nav-logo .logo-text-sub {
        font-size: 10px;
    }
    
    /* Client Logo Text */
    .client-logo-svg .logo-text,
    .logo-text {
        font-size: 20px;
    }
    
    /* Buttons */
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
        min-height: 40px;
    }
    
    /* Cards */
    .card {
        padding: var(--spacing-md);
    }
    
    /* Sections */
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .page-header {
        padding: var(--spacing-lg) 0;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}

/* ===== Landscape Mobile (480px - 767px) ===== */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .page-header {
        padding: var(--spacing-lg) 0;
    }
    
    .nav-menu {
        height: calc(100vh - 60px);
        padding: var(--spacing-lg) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
}

/* ===== Print Styles ===== */
@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .header,
    .nav-toggle,
    .footer,
    .btn {
        display: none !important;
    }
    
    main {
        margin-top: 0 !important;
    }
    
    .container {
        max-width: none !important;
        padding: 0 !important;
    }
    
    .page-header {
        background: none !important;
        color: black !important;
        padding: var(--spacing-md) 0 !important;
    }
    
    .hero {
        background: none !important;
        color: black !important;
        padding: var(--spacing-md) 0 !important;
    }
    
    .card {
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    img {
        max-width: 100% !important;
        height: auto !important;
    }
}

/* ===== High DPI / Retina Displays ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Optimize for high DPI displays */
    .svg-icon,
    .svg-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .fade-in,
    .slide-up {
        animation: none;
    }
}

/* ===== Dark Mode Support ===== */
@media (prefers-color-scheme: dark) {
    /* Note: This is prepared for future dark mode implementation */
    /* Currently maintaining light theme as per requirements */
}

/* ===== Focus Styles for Accessibility ===== */
@media (any-hover: none) {
    /* Touch devices */
    .btn:hover {
        transform: none;
    }
    
    .card:hover {
        transform: none;
    }
}

/* ===== Container Queries (Future Enhancement) ===== */
/* Note: Container queries are not yet widely supported */
/* This is prepared for future implementation */

/* ===== Utility Classes for Responsive Design ===== */

/* Hide/Show on different screen sizes */
.hide-mobile {
    display: block;
}

.show-mobile {
    display: none;
}

.hide-tablet {
    display: block;
}

.show-tablet {
    display: none;
}

.hide-desktop {
    display: block;
}

.show-desktop {
    display: none;
}

@media (max-width: 767px) {
    .hide-mobile {
        display: none;
    }
    
    .show-mobile {
        display: block;
    }
}

@media (max-width: 1023px) and (min-width: 768px) {
    .hide-tablet {
        display: none;
    }
    
    .show-tablet {
        display: block;
    }
}

@media (min-width: 1024px) {
    .hide-desktop {
        display: none;
    }
    
    .show-desktop {
        display: block;
    }
}

/* Responsive text alignment */
.text-center-mobile {
    text-align: left;
}

.text-left-mobile {
    text-align: left;
}

@media (max-width: 767px) {
    .text-center-mobile {
        text-align: center;
    }
    
    .text-left-mobile {
        text-align: left;
    }
}

/* Responsive spacing */
.p-responsive {
    padding: var(--spacing-lg);
}

.m-responsive {
    margin: var(--spacing-lg);
}

@media (max-width: 767px) {
    .p-responsive {
        padding: var(--spacing-md);
    }
    
    .m-responsive {
        margin: var(--spacing-md);
    }
}

/* ===== Case Card Responsive ===== */
@media (max-width: 1023px) {
    .case-features {
        grid-template-columns: 1fr;
    }
    
    .case-content {
        max-width: 100%;
    }
}

@media (max-width: 767px) {
    .case-card {
        padding: var(--spacing-lg);
    }
    
    .case-content h3 {
        font-size: var(--font-size-xl);
    }
    
    .case-content > p {
        font-size: var(--font-size-base);
    }
    
    .case-features li {
        padding: var(--spacing-sm);
        padding-left: var(--spacing-lg);
    }
}