/* Easy Care Drive - Facebook-Inspired Modern UI */
@import url('https://fonts.googleapis.com/css2?family=Segoe+UI:wght@300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Facebook-inspired Primary Colors */
    --fb-blue: #1877f2;
    --fb-blue-hover: #166fe5;
    --fb-blue-light: #e7f3ff;
    --fb-green: #42b883;
    --fb-green-hover: #369870;
    
    /* Modern Color Palette */
    --primary-600: #1877f2;
    --primary-500: #1877f2;
    --primary-400: #4267B2;
    --primary-50: #e7f3ff;
    
    /* Success Colors */
    --success-600: #42b883;
    --success-500: #42b883;
    --success-50: #f0f9ff;
    
    /* Modern Gray Scale */
    --gray-900: #1c1e21;
    --gray-800: #242526;
    --gray-700: #3a3b3c;
    --gray-600: #65676b;
    --gray-500: #8a8d91;
    --gray-400: #b0b3b8;
    --gray-300: #dadde1;
    --gray-200: #e4e6ea;
    --gray-100: #f0f2f5;
    --gray-50: #f8f9fa;
    
    /* Enhanced Facebook-style Colors */
    --background: #f0f2f5;
    --surface: #ffffff;
    --surface-hover: #f2f3f5;
    --surface-active: #e4e6ea;
    --border: #dadde1;
    --border-light: #e4e6ea;
    --text-primary: #1c1e21;
    --text-secondary: #65676b;
    --text-tertiary: #8a8d91;
    
    /* Interactive Colors */
    --hover-overlay: rgba(0, 0, 0, 0.05);
    --active-overlay: rgba(0, 0, 0, 0.1);
    --focus-ring: rgba(24, 119, 242, 0.2);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
}

body {
    font-family: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 14px;
    font-weight: 400;
    scroll-behavior: smooth;
}

/* Enhanced Animations */
@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% { transform: translate3d(0,0,0); }
    40%, 43% { transform: translate3d(0,-8px,0); }
    70% { transform: translate3d(0,-4px,0); }
    90% { transform: translate3d(0,-2px,0); }
}

/* Enhanced Tooltips */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-800);
    color: white;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
    margin-bottom: 8px;
}

[data-tooltip]:after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--gray-800);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
    margin-bottom: 4px;
}

[data-tooltip]:hover:before,
[data-tooltip]:hover:after {
    opacity: 1;
    visibility: visible;
}

/* Icon System */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.icon-sm {
    width: 16px;
    height: 16px;
}

.icon-md {
    width: 20px;
    height: 20px;
}

.icon-lg {
    width: 24px;
    height: 24px;
}

.icon-xl {
    width: 32px;
    height: 32px;
}

.icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor;
}

/* Facebook-Inspired Header */
.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}


.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-6);
    height: 64px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    transition: all 0.2s ease;
    padding: 8px 12px;
    border-radius: 8px;
}

.logo:hover {
    background: var(--surface-hover);
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.logo:hover .logo-image {
    transform: scale(1.05);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--fb-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 2px 8px rgba(24, 119, 242, 0.3);
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: background-color 0.2s ease;
    cursor: pointer;
}

.user-menu:hover {
    background: var(--surface-hover);
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.2;
}

.user-role {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.2;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--success-500) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
}

/* Professional Toolbar */
.toolbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-6);
}

.toolbar-content {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex: 1;
    min-width: 0;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Enhanced Search Component */
.search-container {
    position: relative;
    max-width: 400px;
    flex: 1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-container:focus-within {
    transform: scale(1.02);
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.2));
}

.search-input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--gray-100);
    transition: all 0.2s ease;
    box-shadow: none;
}

.search-input:focus {
    outline: none;
    border-color: var(--fb-blue);
    background: var(--surface);
    box-shadow: 0 0 0 2px rgba(24, 119, 242, 0.2);
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.search-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* View Toggle - Desktop */
.view-toggle {
    display: flex;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    padding: 2px;
    gap: 2px;
}

/* Mobile Floating Toggle - Hidden on Desktop */
.mobile-view-toggle {
    display: none;
}

/* Hide desktop view toggle on mobile */
@media (max-width: 768px) {
    .toolbar .view-toggle {
        display: none !important;
    }
}

.view-toggle-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 2px solid var(--border);
    background: var(--surface);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Removed pseudo-elements that were causing overlay issues */

.view-toggle-btn:hover {
    background: var(--gray-50);
    border-color: var(--primary-300);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.view-toggle-btn.active {
    background: var(--primary-500);
    border-color: var(--primary-600);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
    transform: translateY(-1px);
}

/* Logout Button */
.logout-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background: var(--surface-hover);
    border-color: var(--gray-300);
    color: var(--text-primary);
}

/* Login Form Styles */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--primary-50) 100%);
}

.login-box {
    background: var(--surface);
    padding: var(--space-10) var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border-light);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--success-500) 100%);
    border-radius: var(--radius-xl);
    color: white;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-lg);
}

.login-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.login-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Form Components */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    height: 48px;
    padding: 0 var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 16px;
    background: var(--surface);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-50);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border: 2px solid var(--primary-600);
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.4);
    border-color: var(--primary-700);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--gray-300);
}

/* Breadcrumb Navigation */
.breadcrumb {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--space-3) var(--space-6);
}

.breadcrumb-content {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 13px;
    overflow-x: auto;
    white-space: nowrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    font-weight: 500;
}

.breadcrumb-item:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

.breadcrumb-item.current {
    color: var(--text-primary);
}

.breadcrumb-separator {
    color: var(--text-tertiary);
    font-size: 12px;
    margin: 0 var(--space-1);
}

/* Enhanced Main Content Area */
.main-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
    background: linear-gradient(135deg, #fafbfc 0%, #f8fafc 50%, #f1f5f9 100%);
    min-height: calc(100vh - 200px);
    position: relative;
    overflow: hidden;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.main-content > * {
    position: relative;
    z-index: 1;
}

/* Enhanced Professional File Grid */
.files-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-5);
    margin-bottom: var(--space-8);
    padding: var(--space-6);
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.8) 100%);
    border-radius: var(--radius-xl);
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.1),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.files-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%, rgba(59, 130, 246, 0.05) 100%);
    pointer-events: none;
    z-index: 0;
}

.files-grid > * {
    position: relative;
    z-index: 1;
}

/* Desktop Grid Breakpoints */
@media (max-width: 1600px) {
    .files-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: var(--space-4);
    }
}

@media (max-width: 1400px) {
    .files-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-4);
    }
}

@media (max-width: 1200px) {
    .files-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-4);
    }
}

@media (max-width: 900px) {
    .files-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
        padding: var(--space-4);
    }
}

.files-grid.list-view {
grid-template-columns: 1fr;
gap: 1px;
}

/* Facebook-Inspired Cards */
.item-card {
background: var(--surface);
border: 1px solid var(--border);
border-radius: 8px;
padding: 0;
cursor: pointer;
transition: all 0.2s ease;
position: relative;
overflow: hidden;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.item-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
    border-color: var(--fb-blue);
    background: var(--surface);
}

.item-card:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.1s ease;
}

.item-card:active {
    transform: translateY(-6px) scale(1.01);
    transition: transform 0.1s ease;
}

.item-card::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%, rgba(59, 130, 246, 0.1) 100%);
opacity: 0;
transition: opacity 0.3s ease;
pointer-events: none;
z-index: 1;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%, rgba(59, 130, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 1;
}

.item-card:hover::before {
    opacity: 1;
}

.item-card:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
}

.item-card.selected {
    background: var(--primary-50);
    border-color: var(--primary-500);
}

/* Enhanced Grid View Styles */
.item-preview {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    border-bottom: 2px solid rgba(0, 0, 0, 0.8);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.item-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.6s ease;
}

.item-card:hover .item-preview {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
    transform: scale(1.08) translateZ(10px);
}

.item-card:hover .item-preview::before {
    left: 100%;
}

.item-card.folder .item-preview {
    background: var(--fb-blue);
    position: relative;
}

.item-card.folder .item-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.item-card.folder .item-preview::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 50%, rgba(0,0,0,0.1) 100%);
    pointer-events: none;
}

.item-card.folder:hover .item-preview {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #1e40af 100%);
    transform: scale(1.08) translateZ(10px);
    box-shadow: 
        inset 0 2px 4px rgba(255,255,255,0.3),
        0 0 20px rgba(59, 130, 246, 0.4);
}

.item-card.folder:hover .item-preview::before {
    left: 100%;
}

.item-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
    position: relative;
    z-index: 2;
}

.item-card:hover .item-icon {
    transform: scale(1.2) rotate(8deg) translateZ(20px);
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.25));
    animation: iconFloat 2s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: scale(1.2) rotate(8deg) translateY(0px) translateZ(20px); }
    50% { transform: scale(1.2) rotate(8deg) translateY(-4px) translateZ(20px); }
}

.item-card.folder .item-icon {
    color: white;
    
}

.item-info {
    padding: var(--space-5) var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    background: linear-gradient(to bottom, rgba(255,255,255,0.95), rgba(248,250,252,0.9));
    backdrop-filter: blur(8px);
    transition: all 0.4s ease;
    position: relative;
    z-index: 2;
}

.item-card:hover .item-info {
    background: linear-gradient(to bottom, rgba(255,255,255,1), rgba(248,250,252,0.98));
    transform: translateY(-2px);
}

.item-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    letter-spacing: -0.025em;
    transition: all 0.3s ease;
    position: relative;
}

.item-card:hover .item-title {
    color: var(--primary-600);
    text-shadow: 0 2px 4px rgba(59, 130, 246, 0.1);
    transform: translateY(-1px);
}

/* Favorite Button Styles - Grid View */
.favorite-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Hide favorite button in grid view when it's the first child */
.files-grid:not(.list-view) .item-card > .favorite-btn:first-child {
    display: none;
}

/* Show favorite button in grid view when it's in preview */
.files-grid:not(.list-view) .item-preview .favorite-btn {
    display: flex;
}

/* List View Favorite Button */
.files-grid.list-view .favorite-btn {
    position: static;
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    backdrop-filter: none;
    color: #64748b;
    margin: 0;
    padding: 0;
}

/* Hide favorite button in list view when it's in preview */
.files-grid.list-view .item-preview .favorite-btn {
    display: none;
}

/* Show favorite button in list view when it's the first child */
.files-grid.list-view .item-card > .favorite-btn:first-child {
    display: flex;
}

.files-grid.list-view .favorite-btn:hover {
    background: rgba(251, 191, 36, 0.1);
    border-radius: 50%;
    transform: scale(1.1);
}

.files-grid.list-view .favorite-btn.active {
    background: transparent;
    color: #fbbf24;
    transform: scale(1.05);
    border: none;
    box-shadow: none;
}

.files-grid.list-view .favorite-btn.active:hover {
    background: rgba(251, 191, 36, 0.1);
    color: #f59e0b;
    transform: scale(1.15);
    border-radius: 50%;
}

.files-grid.list-view .favorite-btn svg {
    width: 16px;
    height: 16px;
}

.favorite-btn:hover {
    background: rgba(255, 255, 255, 1);
    border-color: #fbbf24;
    transform: scale(1.1);
    box-shadow: 0 4px 20px rgba(255, 193, 7, 0.3);
}

.favorite-btn:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
}

.favorite-btn.active {
    background: #fbbf24;
    border-color: #f59e0b;
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

.favorite-btn.active:hover {
    background: #f59e0b;
    transform: scale(1.15);
    box-shadow: 0 6px 16px rgba(251, 191, 36, 0.5);
}

.favorite-btn svg {
    width: 18px;
    height: 18px;
    transition: transform 0.2s ease;
}

.favorite-btn:hover svg {
    transform: rotate(10deg);
}

/* Enhanced Header Buttons */
.saved-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 16px;
    background: var(--surface-hover);
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.saved-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--hover-overlay), transparent);
    transition: left 0.5s ease;
}

.saved-btn:hover {
    background: var(--gray-200);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.saved-btn:hover::before {
    left: 100%;
}

.saved-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 80px;
    right: 20px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    padding: var(--space-4);
    max-width: 400px;
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.notification.show {
    transform: translateX(0);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.notification-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.notification-success {
    border-left: 4px solid #10b981;
}

.notification-success .notification-icon {
    color: #10b981;
}

.notification-error {
    border-left: 4px solid #ef4444;
}

.notification-error .notification-icon {
    color: #ef4444;
}

.notification-info {
    border-left: 4px solid #3b82f6;
}

.notification-info .notification-icon {
    color: #3b82f6;
}

.notification-message {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

/* Page Header Styles */
.page-header {
    margin-bottom: var(--space-8);
}

.page-title-section {
    text-align: center;
}

.page-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.page-title .icon {
    color: #fbbf24;
}

.page-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

/* Search Results Header */
.search-results-header {
    margin-bottom: var(--space-6);
    padding: var(--space-4) var(--space-6);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(147, 197, 253, 0.05) 100%);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
}

.search-results-text {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 14px;
    color: var(--primary-700);
    font-weight: 500;
}

.search-results-text .icon {
    color: var(--primary-500);
    flex-shrink: 0;
}

/* Empty State Styles */
.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-8);
    max-width: 400px;
    margin: 0 auto;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    color: #d1d5db;
}

.empty-state-icon svg {
    width: 100%;
    height: 100%;
}

.empty-state-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.empty-state-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.5;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--primary-500);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.btn:hover {
    background: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
}

.item-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-bottom: var(--space-3);
    font-weight: 400;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.item-card:hover .item-description {
    opacity: 1;
}

.item-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: auto;
}

.item-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

/* List View Header */
.list-header {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-5);
    background: var(--gray-100);
    border: 2px solid #000000;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.list-header-item {
    display: flex;
    align-items: center;
}

/* List View Styles */
.files-grid.list-view {
    display: block;
}

.files-grid.list-view .item-card {
    display: grid;
    grid-template-columns: 32px 48px 1fr;
    gap: var(--space-3);
    align-items: center;
    padding: var(--space-4) var(--space-5);
    border-radius: 0;
    border: 2px solid #000000;
    border-top: none;
    height: auto;
    margin-bottom: 2px;
    background: var(--surface);
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
}

.files-grid.list-view .item-card:first-child {
    border-top: 2px solid #000000;
    border-radius: 0;
    margin-top: 0;
}

.files-grid.list-view .item-card:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    margin-bottom: 0;
}

.files-grid.list-view .item-card:hover {
    background: var(--gray-50);
    transform: translateX(4px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.files-grid.list-view .item-preview {
    height: 48px;
    width: 48px;
    background: none;
    border-radius: var(--radius-md);
    border-bottom: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.files-grid.list-view .item-icon {
    width: 32px;
    height: 32px;
}

.files-grid.list-view .item-info {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    gap: var(--space-4);
    align-items: center;
    padding: 0;
    background: transparent;
}

.files-grid.list-view .item-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.files-grid.list-view .item-title {
    font-size: 14px;
    margin-bottom: 0;
    -webkit-line-clamp: 1;
    line-clamp: 1;
}

.files-grid.list-view .item-date {
    font-size: 12px;
    color: var(--text-tertiary);
}

.files-grid.list-view .item-description-col {
    font-size: 13px;
    color: var(--text-secondary);
}

.files-grid.list-view .item-count-col {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: right;
}

.text-muted {
    color: var(--text-tertiary);
    font-style: italic;
}

.files-grid.list-view .item-card.folder .item-icon {
    color: var(--primary-500);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-8);
    color: var(--text-secondary);
    background: var(--surface);
    border: 2px dashed var(--border);
    border-radius: var(--radius-xl);
    margin: var(--space-8) 0;
    transition: all 0.3s ease;
}

.empty-state:hover {
    border-color: var(--primary-300);
    background: var(--primary-25);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    color: var(--text-tertiary);
    opacity: 0.6;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.empty-state-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-description {
    font-size: 15px;
    line-height: 1.5;
    max-width: 400px;
    margin: 0 auto;
}

.empty-state-action {
    margin-top: var(--space-6);
}

/* Error and Success Messages */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: var(--success-50);
    color: var(--success-600);
    border: 1px solid #bbf7d0;
}

.alert-info {
    background: var(--primary-50);
    color: var(--primary-600);
    border: 1px solid #bfdbfe;
}

/* Footer */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--space-6) var(--space-6);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 13px;
    margin-top: auto;
}

/* Mobile Breadcrumb Improvements */
@media (max-width: 768px) {
    .breadcrumb {
        padding: 8px 16px !important;
        background: var(--surface) !important;
        border-bottom: 1px solid var(--border) !important;
    }
    
    .breadcrumb-content {
        gap: 4px !important;
        font-size: 13px !important;
    }
    
    .breadcrumb-item {
        padding: 4px 8px !important;
        font-size: 13px !important;
    }
    
    .breadcrumb-separator {
        margin: 0 2px !important;
    }
    
    .breadcrumb-separator svg {
        width: 12px !important;
        height: 12px !important;
    }
}

/* Enhanced Mobile Responsive Design */
@media (max-width: 768px) {
    .header {
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    
    .header-content {
        padding: 12px 16px;
        height: auto;
        min-height: 60px;
        max-width: none;
        flex-direction: row;
        gap: 12px;
        align-items: center;
        justify-content: space-between;
    }
    
    .header-left {
        flex: none;
        justify-content: flex-start;
        align-items: center;
    }
    
    .header-right {
        position: static;
        transform: none;
        gap: 8px;
        justify-content: flex-end;
        flex-wrap: nowrap;
        align-items: center;
    }
    
    .logo {
        padding: 6px 8px;
        gap: var(--space-2);
        justify-content: flex-start;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }
    
    .logo-text {
        display: block;
        font-size: 16px;
        font-weight: 600;
    }
    
    .user-menu {
        display: flex !important;
        align-items: center;
    }
    
    .user-info {
        display: none;
    }
    
    .user-avatar {
        width: 32px !important;
        height: 32px !important;
        font-size: 12px !important;
        display: flex !important;
        visibility: visible !important;
    }
    
    .logout-btn {
        padding: var(--space-1) var(--space-2) !important;
        font-size: 11px !important;
        gap: var(--space-1) !important;
        display: flex !important;
        visibility: visible !important;
    }
    
    .logout-btn span {
        display: none;
    }
    
    .toolbar {
        padding: var(--space-3) var(--space-4);
        position: relative;
        z-index: 1;
        display: block;
        visibility: visible;
    }
    
    .toolbar-content {
        flex-direction: column;
        gap: var(--space-4);
        align-items: stretch;
        position: relative;
        display: flex;
    }
    
    .toolbar-left {
        order: 1;
        width: 100%;
    }
    
    .toolbar-right {
        display: none;
    }
    
    /* Ensure floating toggle is visible on mobile */
    body .view-toggle {
        display: flex !important;
        visibility: visible !important;
    }
    
    body .view-toggle-btn {
        display: flex !important;
        visibility: visible !important;
    }
    
    /* Show Mobile Floating Toggle */
    .mobile-view-toggle {
        position: fixed !important;
        bottom: 20px !important;
        right: 20px !important;
        background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(248,250,252,0.9) 100%) !important;
        border: 2px solid rgba(0, 0, 0, 0.1) !important;
        border-radius: 16px !important;
        padding: 6px !important;
        gap: 6px !important;
        display: flex !important;
        flex-direction: row !important;
        z-index: 9999 !important;
        pointer-events: auto !important;
        box-shadow: 
            0 12px 32px rgba(0, 0, 0, 0.12),
            0 4px 8px rgba(0, 0, 0, 0.08),
            inset 0 1px 0 rgba(255, 255, 255, 0.8) !important;
        backdrop-filter: blur(16px) !important;
        visibility: visible !important;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    }
    
    .mobile-view-toggle:hover {
        transform: translateY(-2px) !important;
        box-shadow: 
            0 16px 40px rgba(0, 0, 0, 0.15),
            0 6px 12px rgba(0, 0, 0, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.9) !important;
    }
    
    .mobile-toggle-btn {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        padding: 0 !important;
        font-size: 0 !important;
        font-weight: 500 !important;
        border: 2px solid rgba(0, 0, 0, 0.08) !important;
        border-radius: 12px !important;
        background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.8) 100%) !important;
        color: #64748b !important;
        width: 52px !important;
        height: 52px !important;
        touch-action: manipulation !important;
        cursor: pointer !important;
        transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
        -webkit-tap-highlight-color: transparent !important;
        -webkit-user-select: none !important;
        -moz-user-select: none !important;
        -ms-user-select: none !important;
        user-select: none !important;
        outline: none !important;
        position: relative !important;
        overflow: visible !important;
        pointer-events: auto !important;
        z-index: 10000 !important;
        box-shadow: 
            0 4px 8px rgba(0, 0, 0, 0.08),
            0 2px 4px rgba(0, 0, 0, 0.04),
            inset 0 1px 0 rgba(255, 255, 255, 0.9) !important;
    }
    
    .mobile-toggle-btn .icon {
        width: 22px !important;
        height: 22px !important;
        transition: all 0.3s ease !important;
    }
    
    .mobile-toggle-btn:hover {
        background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(248,250,252,0.95) 100%) !important;
        color: #374151 !important;
        transform: scale(1.08) translateY(-1px) !important;
        border-color: rgba(0, 0, 0, 0.12) !important;
        box-shadow: 
            0 6px 12px rgba(0, 0, 0, 0.12),
            0 3px 6px rgba(0, 0, 0, 0.06),
            inset 0 1px 0 rgba(255, 255, 255, 1) !important;
    }
    
    .mobile-toggle-btn:hover .icon {
        transform: scale(1.1) !important;
    }
    
    .mobile-toggle-btn.active {
        background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%) !important;
        color: white !important;
        border-color: #2563eb !important;
        box-shadow: 
            0 8px 16px rgba(59, 130, 246, 0.3),
            0 4px 8px rgba(59, 130, 246, 0.2),
            inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
        transform: scale(1.05) !important;
    }
    
    .mobile-toggle-btn.active:hover {
        background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%) !important;
        transform: scale(1.1) translateY(-1px) !important;
        box-shadow: 
            0 10px 20px rgba(59, 130, 246, 0.4),
            0 6px 12px rgba(59, 130, 246, 0.25),
            inset 0 1px 0 rgba(255, 255, 255, 0.3) !important;
    }
    
    .mobile-toggle-btn.active .icon {
        transform: scale(1.1) !important;
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2)) !important;
    }
    
    .mobile-toggle-btn:active {
        transform: scale(0.98) !important;
        transition: transform 0.1s ease !important;
    }
    
    .mobile-toggle-btn.active:active {
        transform: scale(1.02) !important;
        transition: transform 0.1s ease !important;
    }
    
    .search-container {
        max-width: none;
    }
    
    .breadcrumb {
        padding: var(--space-2) var(--space-4);
    }
    
    .breadcrumb-content {
        font-size: 12px;
    }
    
    .main-content {
        padding: var(--space-4) var(--space-4);
        background: var(--surface);
    }

    
    .files-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--space-3);
    }
    
    .item-preview {
        height: 140px;
    }
    
    .item-icon {
        width: 48px;
        height: 48px;
    }
    
    .item-info {
        padding: var(--space-3) var(--space-4);
    }
    
    .list-header {
        grid-template-columns: 1.5fr 1fr;
        gap: var(--space-2);
        padding: var(--space-2) var(--space-4);
        font-size: 12px;
    }
    
    .list-header-count {
        display: none;
    }
    
    .files-grid.list-view .item-card {
        grid-template-columns: 24px 40px 1fr;
        gap: var(--space-2);
        padding: var(--space-3) var(--space-4);
        margin-bottom: 1px;
    }
    
    .files-grid.list-view .favorite-btn {
        width: 20px;
        height: 20px;
    }
    
    .files-grid.list-view .favorite-btn svg {
        width: 12px;
        height: 12px;
    }
    
    .files-grid.list-view .item-card:hover {
        transform: translateX(2px);
    }
    
    .files-grid.list-view .item-preview {
        width: 40px;
        height: 40px;
    }
    
    .files-grid.list-view .item-icon {
        width: 24px;
        height: 24px;
    }
    
    .files-grid.list-view .item-info {
        grid-template-columns: 1.5fr 1fr;
        gap: var(--space-2);
    }
    
    .files-grid.list-view .item-count-col {
        display: none;
    }
    
    .files-grid.list-view .item-title {
        font-size: 13px;
    }
    
    .files-grid.list-view .item-date {
        font-size: 11px;
    }
    
    .files-grid.list-view .item-description-col {
        font-size: 12px;
        text-align: right;
    }
    
    .login-container {
        padding: var(--space-6);
    }
    
    .login-box {
        padding: var(--space-8) var(--space-6);
    }
    
    .login-logo {
        width: 56px;
        height: 56px;
        font-size: 20px;
    }
    
    .login-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .files-grid {
        grid-template-columns: 1fr !important;
    }
    
    .mobile-view-toggle {
        bottom: 16px !important;
        right: 16px !important;
        gap: 4px !important;
        padding: 4px !important;
        border-radius: 14px !important;
        box-shadow: 
            0 8px 24px rgba(0, 0, 0, 0.15),
            0 3px 6px rgba(0, 0, 0, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.8) !important;
    }
    
    .mobile-toggle-btn {
        width: 48px !important;
        height: 48px !important;
        border-radius: 10px !important;
        box-shadow: 
            0 3px 6px rgba(0, 0, 0, 0.1),
            0 1px 3px rgba(0, 0, 0, 0.06),
            inset 0 1px 0 rgba(255, 255, 255, 0.9) !important;
    }
    
    .mobile-toggle-btn .icon {
        width: 20px !important;
        height: 20px !important;
    }
    
    .mobile-toggle-btn:hover {
        transform: scale(1.06) translateY(-1px) !important;
    }
    
    .mobile-toggle-btn.active {
        transform: scale(1.03) !important;
        box-shadow: 
            0 6px 12px rgba(59, 130, 246, 0.35),
            0 3px 6px rgba(59, 130, 246, 0.25),
            inset 0 1px 0 rgba(255, 255, 255, 0.25) !important;
    }
    
    .mobile-toggle-btn.active:hover {
        transform: scale(1.08) translateY(-1px) !important;
    }
}

/* Desktop Enhancements */
@media (min-width: 1800px) {
    .files-grid {
        grid-template-columns: repeat(6, 1fr) !important;
        gap: var(--space-6);
        padding: var(--space-8);
    }
    
    .item-preview {
        height: 220px;
    }
    
    .item-icon {
        width: 80px;
        height: 80px;
    }
    
    .item-title {
        font-size: 18px;
    }
    
    .item-description {
        font-size: 15px;
    }
}

/* Folder and File Cards */
.item-card {
    background: var(--surface-white);
    border: 1px solid var(--border-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
}

.item-card:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-blue);
}

.item-card.selected {
    background: var(--selected-blue);
    border-color: var(--primary-blue);
}

/* Grid View Styles */
.item-card .item-preview {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hover-gray);
    position: relative;
    overflow: hidden;
}

.item-card.folder .item-preview {
    background: linear-gradient(135deg, #4285f4 0%, #1a73e8 100%);
}

.item-card .item-icon {
    font-size: 3rem;
    color: var(--text-secondary);
}

.item-card.folder .item-icon {
    color: white;
    font-size: 4rem;
}

.item-card .item-info {
    padding: 12px 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.item-card .item-title {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.item-card .item-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* List View Styles */
.files-grid.list-view .item-card {
    flex-direction: row;
    align-items: center;
    padding: 12px 16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
}

.files-grid.list-view .item-card:first-child {
    border-top: 1px solid var(--border-gray);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.files-grid.list-view .item-card:last-child {
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.files-grid.list-view .item-preview {
    height: auto;
    width: 40px;
    background: none;
    margin-right: 16px;
}

.files-grid.list-view .item-icon {
    font-size: 1.5rem;
}

.files-grid.list-view .item-card.folder .item-icon {
    color: var(--primary-blue);
    font-size: 1.5rem;
}

.files-grid.list-view .item-info {
    padding: 0;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.files-grid.list-view .item-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}

/* Mobile Touch Enhancements */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .breadcrumb {
        padding: 12px 16px;
        font-size: 0.8rem;
    }
    
    .files-container {
        padding: 16px;
    }
    
    .item-card {
        min-height: 48px;
        touch-action: manipulation;
    }
    
    .files-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 12px;
    }
    
    .item-card .item-preview {
        height: 120px;
    }
    
    .item-card .item-icon {
        font-size: 2.5rem;
    }
    
    .item-card.folder .item-icon {
        font-size: 3rem;
    }
    
    .files-grid.list-view .item-card {
        padding: 16px;
    }
    
    .files-grid.list-view .item-preview {
        width: 48px;
        margin-right: 12px;
    }
    
    .files-grid.list-view .item-title {
        max-width: 200px;
    }
}

/* Error Messages */
.error {
    background: #ffebee;
    color: #c62828;
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid #f44336;
}

.success {
    background: #e8f5e9;
    color: #2e7d32;
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid #4caf50;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #e0e0e0;
    margin-top: 40px;
}

/* Responsive Design - Tablet and Desktop */
@media (min-width: 768px) {
    .container {
        padding: 30px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .login-box {
        padding: 40px 35px;
    }
    
    .files-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .dashboard {
        padding: 30px;
    }
}

@media (min-width: 1024px) {
    .files-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .welcome-section {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .welcome-content {
        flex: 1;
    }
    
    .logout-btn {
        margin-left: 20px;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Enhanced Mobile Interactions */
.item-card {
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.item-card:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
}

/* Improved Button Styles */
.btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-light);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn:active {
    transform: translateY(0);
}

/* Login Form Enhancements */
.login-box {
    background: var(--surface-white);
    padding: 40px 32px;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-gray);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 400;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-gray);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: all 0.2s ease;
    background: var(--surface-white);
    color: var(--text-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Fade-in Animations */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Loading Animation */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Pulse Animation for Icons */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.item-card.loading .item-icon {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Error and Success Messages */
.error {
    background: #fef7f0;
    color: #d93025;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: 1px solid #fce8e6;
    font-size: 0.875rem;
}

.success {
    background: #e6f4ea;
    color: var(--secondary-green);
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: 1px solid #ceead6;
    font-size: 0.875rem;
}

/* Additional Mobile Improvements */
@media (max-width: 768px) {
    /* Better Mobile Grid - 2 columns */
    .files-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 12px !important;
        padding: 16px !important;
    }
    
    /* Improved Mobile Cards */
    .item-card {
        border-radius: 12px !important;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
        margin-bottom: 0 !important;
    }
    
    .item-card:hover {
        transform: translateY(-2px) !important;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15) !important;
    }
    
    .item-preview {
        height: 100px !important;
    }
    
    .item-info {
        padding: 12px !important;
    }
    
    .item-title {
        font-size: 14px !important;
        font-weight: 600 !important;
        margin-bottom: 4px !important;
        line-height: 1.2 !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
    }
    
    .item-description {
        font-size: 12px !important;
        color: var(--text-secondary) !important;
        margin-bottom: 6px !important;
        line-height: 1.3 !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
    }
    
    /* Better Mobile Search */
    .search-input {
        padding: 14px 16px 14px 48px !important;
        font-size: 16px !important;
        border-radius: 25px !important;
        background: var(--gray-100) !important;
        border: 1px solid var(--border) !important;
    }
    
    .search-icon {
        left: 18px !important;
        width: 20px !important;
        height: 20px !important;
    }
    
    /* Mobile Toolbar Improvements */
    .toolbar {
        padding: 16px !important;
        background: var(--surface) !important;
        border-bottom: 1px solid var(--border) !important;
        position: sticky !important;
        top: 60px !important;
        z-index: 999 !important;
    }
    
    .toolbar-content {
        gap: 16px !important;
    }
    
    /* Mobile Main Content */
    .main-content {
        padding: 0 !important;
        margin-top: 0 !important;
    }
    
    /* Mobile Favorite Buttons */
    .favorite-btn {
        width: 32px !important;
        height: 32px !important;
        top: 8px !important;
        right: 8px !important;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15) !important;
    }
    
    .favorite-btn svg {
        width: 16px !important;
        height: 16px !important;
    }
    
    /* Mobile Typography */
    .logo-text {
        font-size: 18px !important;
        font-weight: 700 !important;
    }
    
    .logo-image {
        width: 36px !important;
        height: 36px !important;
    }
    
    /* Mobile Header Spacing */
    .header-content {
        padding: 16px !important;
        min-height: 70px !important;
        flex-direction: row !important;
        justify-content: space-between !important;
        align-items: center !important;
    }
    
    .header-left {
        flex: none !important;
        justify-content: flex-start !important;
    }
    
    .header-right {
        flex: none !important;
        justify-content: flex-end !important;
        gap: 6px !important;
    }
    
    /* Mobile User Menu */
    .user-avatar {
        width: 36px !important;
        height: 36px !important;
        font-size: 14px !important;
    }
    
    /* Mobile Saved Button */
    .saved-btn {
        padding: 6px 10px !important;
        font-size: 12px !important;
        min-width: 60px !important;
    }
    
    .saved-btn span {
        display: none !important;
    }
    
    .saved-btn .icon {
        width: 18px !important;
        height: 18px !important;
    }
    
    /* Mobile Logout Button */
    .logout-btn {
        padding: 6px 8px !important;
        font-size: 12px !important;
    }
    
    .logout-btn span {
        display: none !important;
    }
    
    .logout-btn .icon {
        width: 18px !important;
        height: 18px !important;
    }
}