/* Responsive CSS pre isptv.cz */

/* Mobile menu toggle button */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #fff;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-toggle.dark {
    color: #333;
}

/* Mobile nav toggle button (for header and home page) */
.mobile-nav-toggle {
    display: none;
}

/* Mobile header for public pages */
.mobile-header {
    display: none;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

.sidebar-overlay.active {
    display: block;
}

/* Desktop Optimizations */
@media (min-width: 769px) {
    /* Sidebar scrollable navigation */
    .sidebar {
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }
    
    .sidebar-logo {
        flex-shrink: 0;
    }
    
    .sidebar-nav {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
        scrollbar-width: thin;
        scrollbar-color: rgba(255,255,255,0.3) transparent;
    }
    
    .sidebar-nav::-webkit-scrollbar {
        width: 8px;
    }
    
    .sidebar-nav::-webkit-scrollbar-track {
        background: transparent;
    }
    
    .sidebar-nav::-webkit-scrollbar-thumb {
        background: rgba(255,255,255,0.3);
        border-radius: 4px;
    }
    
    .sidebar-nav::-webkit-scrollbar-thumb:hover {
        background: rgba(255,255,255,0.5);
    }
    
    /* Better navigation item styling on desktop */
    .nav-item {
        white-space: nowrap;
    }
    
    .nav-item span {
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .nav-item i {
        flex-shrink: 0;
    }
    
    /* Main wrapper transition */
    .main-wrapper {
        transition: margin-left 0.3s ease;
    }
}

/* Large Desktop Screens */
@media (min-width: 1400px) {
    :root {
        --sidebar-width: 280px;
    }
    
    .nav-item {
        padding: 18px 30px !important;
        font-size: 15px !important;
    }
    
    .nav-section {
        padding: 22px 30px 14px !important;
    }
    
    .sidebar-logo {
        padding: 25px 30px !important;
    }
    
    .sidebar-logo img {
        height: 45px !important;
    }
}

/* Medium screens (tablets) */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 220px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .form-row {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .main-content {
        padding: 20px !important;
    }
    
    .content-card {
        padding: 20px !important;
    }
}

/* Small screens (mobile landscape / small tablets) */
@media (max-width: 768px) {
    /* Show mobile menu toggle */
    .mobile-menu-toggle {
        display: block;
        position: fixed;
        top: 15px;
        left: 15px;
        z-index: 1001;
        background: var(--purple-color, #7C3AED);
        border-radius: 8px;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Hide sidebar by default on mobile */
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1000;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    /* Mobile sidebar navigation - scrollable */
    .sidebar-nav {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Adjust main wrapper */
    .main-wrapper {
        margin-left: 0 !important;
    }
    
    /* Adjust header */
    .top-header {
        padding: 0 15px 0 70px !important;
    }
    
    .page-title {
        font-size: 16px !important;
    }
    
    /* Stats grid - single column */
    .stats-grid {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }
    
    /* Form rows - single column */
    .form-row {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }
    
    .form-row.two-cols {
        grid-template-columns: 1fr !important;
    }
    
    /* Main content padding */
    .main-content {
        padding: 15px !important;
    }
    
    /* Cards */
    .content-card, .stat-card, .form-card {
        padding: 15px !important;
        border-radius: 12px !important;
    }
    
    /* Tables - horizontal scroll */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    table {
        min-width: 600px;
    }
    
    /* Hide some table columns on mobile */
    .hide-mobile {
        display: none !important;
    }
    
    /* Buttons */
    .btn {
        padding: 10px 15px !important;
        font-size: 13px !important;
    }
    
    .form-actions {
        flex-direction: column !important;
        gap: 10px !important;
    }
    
    .form-actions .btn {
        width: 100%;
        text-align: center;
    }
    
    /* Actions column */
    .actions-cell {
        white-space: nowrap;
    }
    
    .actions-cell .btn {
        padding: 6px 10px !important;
        font-size: 12px !important;
    }
    
    /* Public pages header */
    .header-container {
        flex-wrap: nowrap;
        gap: 15px;
        align-items: center;
    }
    
    .header-container .logo {
        flex: 1;
        min-width: 0;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 0;
        border-top: 1px solid #eee;
        margin-top: 10px;
    }
    
    .main-nav.open {
        display: flex;
    }
    
    .mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }
    
    .mobile-nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--purple-color, #7C3AED);
        border: none;
        font-size: 20px;
        color: #fff;
        cursor: pointer;
        padding: 8px 12px;
        border-radius: 6px;
        transition: background 0.3s;
        min-width: 44px;
        min-height: 44px;
        flex-shrink: 0;
    }
    
    .mobile-nav-toggle:hover {
        background: #6D28D9;
    }
    
    .mobile-nav-toggle:active {
        transform: scale(0.95);
    }
    
    /* Header nav (used in header.php) */
    .header {
        padding: 10px 0 !important;
    }
    
    .header-inner {
        position: relative;
        padding: 0 15px !important;
    }
    
    .header .logo img {
        height: 35px !important;
        max-width: 100%;
    }
    
    .header .mobile-nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--purple-color, #7C3AED);
        border: none;
        color: #fff;
        font-size: 20px;
        cursor: pointer;
        padding: 8px 12px;
        border-radius: 6px;
        min-width: 44px;
        min-height: 44px;
        flex-shrink: 0;
    }
    
    .header .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        gap: 0;
        padding: 0;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        border-top: 1px solid #eee;
        z-index: 1000;
        margin-top: 10px;
    }
    
    .header .nav.open {
        display: flex;
    }
    
    .header .nav a {
        padding: 15px 20px;
        border-bottom: 1px solid #f0f0f0;
        display: block;
        width: 100%;
        text-align: left;
        font-size: 15px;
    }
    
    .header .nav a:last-child {
        border-bottom: none;
    }
    
    .header .nav .btn {
        width: 100%;
        text-align: center;
        margin: 0;
    }
    
    /* Login/Register forms */
    .login-container, .register-container {
        padding: 30px 20px !important;
        margin: 10px;
        max-width: 100% !important;
        box-sizing: border-box;
    }
    
    /* Better spacing for all sections */
    section {
        width: 100%;
        box-sizing: border-box;
    }
    
    /* Fix for grid layouts */
    .features-grid,
    .pricing-grid,
    .testimonials-grid {
        width: 100%;
        box-sizing: border-box;
    }
    
    /* Footer */
    .site-footer {
        width: 100%;
        box-sizing: border-box;
    }
    
    .site-footer .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 15px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    /* Better button spacing on mobile */
    .btn {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    /* Fix for lang switcher in mobile menu */
    .main-nav .lang-switcher,
    .header .nav .lang-switcher {
        padding: 15px 20px;
        border-bottom: 1px solid #f0f0f0;
    }
}

/* Extra small screens (mobile portrait) */
@media (max-width: 480px) {
    .header {
        padding: 8px 0 !important;
    }
    
    .header-inner {
        padding: 0 10px !important;
    }
    
    .header .logo img {
        height: 30px !important;
    }
    
    .header .mobile-nav-toggle {
        padding: 6px 10px;
        font-size: 18px;
        min-width: 40px;
        min-height: 40px;
    }
    
    .page-title {
        font-size: 14px !important;
    }
    
    .stat-value {
        font-size: 20px !important;
    }
    
    .stat-label {
        font-size: 11px !important;
    }
    
    /* Very compact buttons */
    .header-actions .btn {
        padding: 8px 12px !important;
        font-size: 12px !important;
    }
    
    .header-actions .btn span {
        display: none;
    }
    
    /* Invoice/document view */
    .invoice-container {
        padding: 15px !important;
    }
    
    .parties {
        flex-direction: column !important;
    }
    
    .party {
        width: 100% !important;
        margin-bottom: 15px;
    }
    
    /* Modal adjustments */
    .modal-content {
        width: 95% !important;
        max-width: none !important;
        margin: 10px;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    /* Better spacing for mobile */
    .main-content {
        padding: 10px !important;
    }
    
    .content-card, .stat-card, .form-card {
        padding: 12px !important;
    }
    
    /* Better text sizing */
    h1 {
        font-size: 24px !important;
    }
    
    h2 {
        font-size: 20px !important;
    }
    
    h3 {
        font-size: 18px !important;
    }
    
    /* Better spacing */
    .section-container {
        padding: 0 10px;
    }
    
    /* Ensure proper button sizing */
    .btn-sm {
        padding: 8px 12px !important;
        font-size: 12px !important;
    }
}

/* Landscape orientation fixes */
@media (max-height: 500px) and (orientation: landscape) {
    .sidebar {
        overflow-y: auto;
    }
    
    .login-container, .register-container {
        padding: 20px !important;
    }
}

/* Print styles - hide mobile elements */
@media print {
    .mobile-menu-toggle,
    .sidebar-overlay,
    .mobile-header,
    .mobile-nav-toggle {
        display: none !important;
    }
    
    .sidebar {
        display: none !important;
    }
    
    .main-wrapper {
        margin-left: 0 !important;
    }
}

/* Touch-friendly improvements */
@media (pointer: coarse) {
    .nav-item {
        padding: 18px 25px !important;
    }
    
    .btn {
        min-height: 44px;
    }
    
    input, select, textarea {
        min-height: 44px;
        font-size: 16px !important; /* Prevents zoom on iOS */
    }
    
    a {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }
    
    .mobile-nav-toggle,
    .mobile-menu-toggle {
        min-width: 44px;
        min-height: 44px;
    }
    
    .main-nav a,
    .header .nav a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* Desktop Layout Optimizations */
@media (min-width: 769px) {
    /* Better max-widths for desktop */
    .header-container,
    .section-container,
    .footer-container {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    /* Better spacing on desktop */
    .main-content {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    /* Smooth transitions */
    .main-wrapper {
        transition: margin-left 0.3s ease;
    }
}

/* Prevent horizontal scroll on mobile */
@media (max-width: 768px) {
    html, body {
        overflow-x: hidden;
        width: 100%;
        position: relative;
    }
    
    * {
        max-width: 100%;
    }
    
    img {
        max-width: 100%;
        height: auto;
    }
    
    /* Fix for fixed header */
    .site-header,
    .header {
        width: 100%;
        left: 0;
        right: 0;
    }
    
    /* Better container handling */
    .header-container,
    .header-inner {
        width: 100%;
        box-sizing: border-box;
    }
    
    /* Ensure no element causes overflow */
    .hero-section,
    .features-section,
    .pricing-section,
    .testimonials-section,
    .cta-section,
    .site-footer {
        width: 100%;
        box-sizing: border-box;
    }
}