/**
 * Mobile-First Responsive Styles
 * Base styles for mobile, enhanced for larger screens
 */

/* Mobile-First Base Typography */
html {
    font-size: 14px; /* Base font size for mobile */
}

@media (min-width: 768px) {
    html {
        font-size: 15px;
    }
}

@media (min-width: 1024px) {
    html {
        font-size: 16px;
    }
}

/* Mobile-First Layout Containers */
.main-container {
    width: 100%;
    padding: 1rem;
    min-height: 100vh;
}

@media (min-width: 768px) {
    .main-container {
        padding: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .main-container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 2rem;
    }
}

/* Content Wrapper - Mobile First */
.content-wrapper {
    width: 100%;
    max-width: 100%;
    padding: 0;
}

@media (min-width: 768px) {
    .content-wrapper {
        padding: 0 1rem;
    }
}

/* Mobile-First Tool Grid */
.tools-container {
    width: 100%;
    padding: 0;
}

.tools-grid {
    display: grid;
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 1rem;
    width: 100%;
    padding: 0;
}

@media (min-width: 480px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (min-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 1.25rem;
    }
}

@media (min-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        gap: 1.5rem;
    }
}

/* Mobile-First Tool Cards */
.tool-card {
    width: 100%;
    min-height: auto;
    padding: 1rem;
    margin-bottom: 0;
    border-radius: 8px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.tool-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.tool-name {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.3;
    margin: 0;
    flex: 1;
}

.tool-category {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    white-space: nowrap;
}

.tool-description {
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.tool-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: auto;
}

.tool-actions button,
.tool-actions a {
    flex: 1;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    min-height: 44px; /* Touch target size */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
}

@media (min-width: 768px) {
    .tool-card {
        padding: 1.25rem;
        min-height: 260px;
    }
    
    .tool-name {
        font-size: 1.25rem;
    }
    
    .tool-description {
        font-size: 0.9375rem;
        margin-bottom: 1rem;
    }
    
    .tool-actions {
        gap: 0.75rem;
    }
}

/* Mobile View Controls */
.view-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
}

.sort-controls select {
    flex: 1;
    padding: 0.625rem;
    font-size: 0.875rem;
    min-height: 44px;
}

.view-options {
    display: flex;
    justify-content: flex-end;
}

@media (min-width: 768px) {
    .view-controls {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 1rem;
        background: var(--bg-card);
        border-radius: 8px;
    }
}

/* Mobile Search Bar */
.search-container {
    width: 100%;
    margin-bottom: 1rem;
}

.search-input {
    width: 100%;
    min-width: unset;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 1rem;
    min-height: 44px;
}

.search-icon {
    font-size: 1rem;
    left: 0.75rem;
}

@media (min-width: 768px) {
    .search-container {
        max-width: 400px;
    }
}

/* Mobile Modals */
.modal {
    padding: 1rem;
}

.modal-content {
    width: 100%;
    max-width: calc(100vw - 2rem);
    max-height: calc(100vh - 2rem);
    margin: 1rem auto;
    border-radius: 12px;
}

.modal-header {
    padding: 1rem;
}

.modal-title {
    font-size: 1.25rem;
}

.modal-body {
    padding: 1rem;
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.modal-close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .modal-content {
        max-width: 600px;
        margin: 2rem auto;
    }
    
    .modal-header {
        padding: 1.5rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
}

/* Mobile List View */
.list-view .tool-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0.875rem;
    min-height: auto;
}

.list-view .tool-card-content {
    flex: 1;
}

.list-view .tool-name {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.list-view .tool-description {
    font-size: 0.8125rem;
    -webkit-line-clamp: 2;
    margin-bottom: 0.5rem;
}

.list-view .tool-actions {
    margin-left: 1rem;
    flex-direction: column;
    gap: 0.25rem;
}

.list-view .tool-actions button {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
}

/* Mobile Filters */
.advanced-filters {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-main);
    z-index: 1100;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.advanced-filters.active {
    transform: translateY(0);
}

.filters-header {
    position: sticky;
    top: 0;
    background: var(--bg-card);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.filters-content {
    padding: 1rem;
}

.filter-section {
    margin-bottom: 1.5rem;
}

.filter-section h4 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    min-height: 44px;
}

.filter-checkbox input {
    width: 20px;
    height: 20px;
    margin-right: 0.75rem;
}

.filter-actions {
    position: sticky;
    bottom: 0;
    background: var(--bg-card);
    padding: 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 0.75rem;
}

.filter-actions button {
    flex: 1;
    padding: 0.875rem;
    min-height: 48px;
}

@media (min-width: 768px) {
    .advanced-filters {
        position: static;
        transform: none;
        width: 280px;
        border-radius: 8px;
        border: 1px solid var(--border);
    }
}

/* Mobile Stats Bar */
.stats-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-card);
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

@media (min-width: 768px) {
    .stats-bar {
        padding: 1rem 1.5rem;
        justify-content: space-between;
    }
}

/* Mobile Comparison Panel */
.comparison-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 2px solid var(--border);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    max-height: 70vh;
    z-index: 900;
}

.comparison-panel.active {
    transform: translateY(0);
}

.comparison-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.comparison-content {
    padding: 1rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.comparison-tools {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.comparison-actions {
    padding: 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 0.75rem;
}

@media (min-width: 768px) {
    .comparison-panel {
        position: fixed;
        right: 0;
        top: 0;
        bottom: 0;
        left: auto;
        width: 400px;
        transform: translateX(100%);
        max-height: 100vh;
        border-left: 2px solid var(--border);
        border-top: none;
    }
    
    .comparison-panel.active {
        transform: translateX(0);
    }
}

/* Touch-Friendly Buttons */
button,
.btn,
a.btn {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1rem;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Remove hover effects on touch devices */
@media (hover: none) {
    .tool-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    button:hover,
    .btn:hover {
        transform: none;
    }
}

/* Loading States for Mobile */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
}

/* Mobile Utilities */
@media (max-width: 767px) {
    /* Hide scrollbars but keep functionality */
    ::-webkit-scrollbar {
        width: 0;
        height: 0;
    }
    
    /* Prevent horizontal scroll */
    body,
    html {
        overflow-x: hidden;
    }
    
    /* Full width elements */
    .mobile-full-width {
        width: 100vw;
        margin-left: -1rem;
        margin-right: -1rem;
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* Stack elements */
    .mobile-stack {
        flex-direction: column !important;
    }
    
    /* Hide desktop elements */
    .desktop-only {
        display: none !important;
    }
}

/* Landscape Mobile Adjustments */
@media (max-width: 768px) and (orientation: landscape) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .modal-content {
        max-height: calc(100vh - 1rem);
        margin: 0.5rem auto;
    }
    
    .advanced-filters {
        max-height: 100vh;
    }
}

/* High DPI Screen Adjustments */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Sharper borders and shadows */
    .tool-card,
    .modal-content,
    button {
        border-width: 0.5px;
    }
}

/* Performance Optimizations */
@media (max-width: 768px) {
    /* Reduce animations on mobile */
    * {
        animation-duration: 0.2s !important;
        transition-duration: 0.2s !important;
    }
    
    /* Optimize scroll performance */
    .tools-container {
        will-change: scroll-position;
    }
    
    /* Reduce shadow complexity */
    .tool-card {
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    }
}

/* Safe Area Insets for Modern Devices */
@supports (padding: max(0px)) {
    .main-container {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }
    
    .modal-content {
        margin-bottom: max(1rem, env(safe-area-inset-bottom));
    }
}