/* ==========================================
   KM Works Website - Responsive Styles
   ========================================== */

/* ==========================================
   Large Desktops (1400px and up)
   ========================================== */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }

    .hero-content h1 {
        font-size: 4rem;
    }

    .section-title {
        font-size: 3.2rem;
    }
}

/* ==========================================
   Laptops / Small Desktops (1200px - 1399px)
   ========================================== */
@media (max-width: 1399px) {
    :root {
        --section-padding: 100px;
    }

    .container {
        max-width: 1140px;
    }

    .hero-content h1 {
        font-size: 3.2rem;
    }
}

/* ==========================================
   Tablets Landscape (992px - 1199px)
   ========================================== */
@media (max-width: 1199px) {
    :root {
        --section-padding: 80px;
    }

    .container {
        max-width: 960px;
    }

    /* Navigation */
    .nav-menu {
        gap: 25px;
    }

    .nav-link {
        font-size: 0.9rem;
    }

    /* Hero */
    .hero-content h1 {
        font-size: 2.8rem;
    }

    .typed-wrapper {
        font-size: 1.3rem;
    }

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

    /* Values */
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* SmartSuite */
    .smartsuite-wrapper {
        gap: 40px;
    }

    .smartsuite-content {
        padding-right: 20px;
    }

    /* Solutions */
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Portfolio */
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Tech */
    .tech-categories {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* ==========================================
   Tablets Portrait (768px - 991px)
   ========================================== */
@media (max-width: 991px) {
    :root {
        --section-padding: 70px;
    }

    .container {
        max-width: 720px;
    }

    /* Navigation */
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    /* Hero */
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1rem;
    }

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

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

    /* Section Headers */
    .section-title {
        font-size: 2.2rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* SmartSuite */
    .smartsuite-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .smartsuite-content {
        padding-right: 0;
        order: 2;
    }

    .smartsuite-content .section-title,
    .smartsuite-content .section-badge {
        text-align: center;
    }

    .smartsuite-features {
        display: inline-block;
        text-align: left;
    }

    .smartsuite-image {
        order: 1;
    }

    /* Solutions - Show Swiper */
    .solutions-grid {
        display: none;
    }

    .solutions-swiper {
        display: block;
    }

    /* Portfolio */
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-filter {
        gap: 10px;
    }

    .filter-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }

    /* Timeline */
    .timeline::before {
        left: 20px;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        padding-right: 0;
        padding-left: 60px;
        justify-content: flex-start;
    }

    .timeline-marker {
        left: 20px;
        transform: translateX(-50%);
    }

    .timeline-content {
        max-width: 100%;
    }

    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
        text-align: center;
    }

    .footer-logo {
        margin: 0 auto 15px;
    }
}

/* ==========================================
   Large Phones (576px - 767px)
   ========================================== */
@media (max-width: 767px) {
    :root {
        --section-padding: 60px;
    }

    /* AOS fallback - ensure elements are visible on mobile */
    [data-aos] {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .container {
        max-width: 540px;
    }

    /* Typography */
    html {
        font-size: 15px;
    }

    /* Header */
    #header {
        padding: 15px 0;
    }

    .logo img {
        height: 35px;
    }

    /* Hero */
    .hero-content h1 {
        font-size: 2rem;
    }

    .typed-wrapper {
        font-size: 1.1rem;
    }

    .hero-badge {
        padding: 8px 18px;
        font-size: 0.8rem;
    }

    /* Section Headers */
    .section-header {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-badge {
        font-size: 0.75rem;
        padding: 6px 15px;
    }

    /* Stats */
    .stats-grid {
        gap: 20px;
    }

    .stat-card {
        padding: 30px 20px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-card i {
        font-size: 2rem;
    }

    /* Values */
    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .value-card {
        padding: 30px 20px;
    }

    .value-icon {
        width: 70px;
        height: 70px;
    }

    /* SmartSuite */
    .patent-card {
        max-width: 100%;
    }

    /* Portfolio */
    .portfolio-filter {
        flex-wrap: wrap;
        justify-content: center;
    }

    .filter-btn {
        flex: 0 0 auto;
    }

    /* Tech */
    .tech-categories {
        grid-template-columns: 1fr;
    }

    .tech-category {
        padding: 25px;
    }

    /* Contact */
    .contact-card,
    .contact-form {
        padding: 30px 25px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    /* Modal */
    .modal-content {
        padding: 20px;
        width: 95%;
    }

    .modal-title {
        font-size: 1.3rem;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        grid-column: span 1;
    }

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

    /* Back to top */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

/* ==========================================
   Small Phones (up to 575px)
   ========================================== */
@media (max-width: 575px) {
    :root {
        --section-padding: 50px;
    }

    .container {
        padding: 0 15px;
    }

    /* Typography */
    html {
        font-size: 14px;
    }

    /* Header */
    .logo img {
        height: 30px;
    }

    /* Hero */
    #hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 60px;
    }

    .hero-content {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 1.75rem;
        line-height: 1.4;
    }

    .hero-content h1 br {
        display: none;
    }

    .typed-wrapper {
        font-size: 1rem;
        min-height: 30px;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .hero-description br {
        display: none;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .scroll-indicator {
        display: none;
    }

    /* Mobile Recent Projects */
    .hero-mobile-projects {
        display: block;
        margin-top: 40px;
        text-align: center;
    }

    .mobile-projects-label {
        display: block;
        font-size: 0.7rem;
        text-transform: uppercase;
        letter-spacing: 2px;
        color: var(--accent);
        opacity: 0.5;
        margin-bottom: 15px;
    }

    .mobile-projects-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-projects-list li {
        font-size: 0.85rem;
        color: var(--text-secondary);
        padding: 6px 0;
    }

    .mobile-projects-list li:nth-child(1) {
        opacity: 0.4;
    }

    .mobile-projects-list li:nth-child(2) {
        opacity: 0.35;
    }

    .mobile-projects-list li:nth-child(3) {
        opacity: 0.30;
    }

    .mobile-projects-list li:nth-child(4) {
        opacity: 0.25;
    }

    .mobile-projects-list li:nth-child(5) {
        opacity: 0.2;
    }

    /* About section - reduce top padding */
    #about {
        padding-top: 5px;
    }

    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }

    .stat-card {
        padding: 25px 15px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-suffix {
        font-size: 1.2rem;
    }

    .stat-card i {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }

    .stat-label {
        font-size: 0.85rem;
    }

    /* Section Headers */
    .section-title {
        font-size: 1.6rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
    }

    .section-subtitle br {
        display: none;
    }

    /* SmartSuite */
    .smartsuite-tagline {
        font-size: 1rem;
    }

    .smartsuite-features li {
        font-size: 0.9rem;
    }

    /* Solutions Swiper */
    .solutions-swiper .solution-card {
        padding: 30px 20px;
    }

    /* Portfolio */
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .portfolio-item {
        aspect-ratio: 16/10;
    }

    .portfolio-overlay {
        padding: 20px;
    }

    .filter-btn {
        padding: 8px 14px;
        font-size: 0.8rem;
    }

    /* Timeline */
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        padding-left: 50px;
    }

    .timeline-content {
        padding: 20px;
    }

    .timeline-year {
        font-size: 0.8rem;
        padding: 4px 12px;
    }

    .timeline-content h4 {
        font-size: 1rem;
    }

    .timeline-content p {
        font-size: 0.85rem;
    }

    /* Contact */
    .contact-card,
    .contact-form {
        padding: 25px 20px;
    }

    .contact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .contact-text h4 {
        font-size: 0.95rem;
    }

    .contact-text p {
        font-size: 0.85rem;
    }

    .form-group label {
        font-size: 0.85rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 15px;
        font-size: 0.9rem;
    }

    /* Mobile Menu */
    .mobile-nav a {
        font-size: 1.2rem;
    }

    .mobile-nav li {
        margin: 25px 0;
    }

    /* Footer */
    .footer-content {
        gap: 30px;
    }

    .footer-content h4 {
        font-size: 0.95rem;
        margin-bottom: 20px;
    }

    .footer-links a,
    .footer-solutions a,
    .footer-contact p {
        font-size: 0.85rem;
    }

    .footer-bottom p {
        font-size: 0.75rem;
    }
}

/* ==========================================
   Extra Small Phones (up to 375px)
   ========================================== */
@media (max-width: 375px) {
    html {
        font-size: 13px;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

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

    .stat-card {
        display: flex;
        align-items: center;
        gap: 20px;
        text-align: left;
        padding: 20px;
    }

    .stat-card i {
        margin-bottom: 0;
    }

    .portfolio-filter {
        gap: 8px;
    }

    .filter-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
}

/* ==========================================
   Landscape Orientation (Mobile)
   ========================================== */
@media (max-height: 500px) and (orientation: landscape) {
    #hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }

    .typed-wrapper {
        margin-bottom: 15px;
    }

    .hero-description {
        margin-bottom: 25px;
    }

    .scroll-indicator {
        display: none;
    }
}

/* ==========================================
   High DPI / Retina Displays
   ========================================== */
@media (-webkit-min-device-pixel-ratio: 2),
       (min-resolution: 192dpi) {
    .logo img,
    .footer-logo {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }

    #header,
    #preloader,
    .scroll-indicator,
    .back-to-top,
    .hamburger,
    .mobile-menu,
    .hero-buttons,
    .portfolio-filter,
    #loadMoreBtn,
    .kakao-btn,
    .contact-form,
    #footer .footer-social {
        display: none !important;
    }

    .section {
        padding: 30px 0;
        page-break-inside: avoid;
    }

    .glass-card {
        border: 1px solid #ddd;
        background: white !important;
    }

    a {
        text-decoration: underline;
    }

    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
}

/* ==========================================
   Touch Device Optimizations
   ========================================== */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .glass-card:hover {
        transform: none;
    }

    .solution-card:hover .solution-icon {
        transform: none;
    }

    .portfolio-item:hover img {
        transform: none;
    }

    .portfolio-overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(2, 35, 140, 0.9), transparent);
    }

    /* Larger tap targets */
    .nav-link,
    .filter-btn,
    .btn {
        min-height: 44px;
        min-width: 44px;
    }

    /* Disable custom scrollbar */
    ::-webkit-scrollbar {
        display: none;
    }

    body {
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
}

/* ==========================================
   Dark Mode System Preference (Optional)
   ========================================== */
/* Already using dark theme by default, but this ensures consistency */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}