:root {
    /* Dark mode colors - more modern palette */
    --bg-dark: #121418;
    --card-bg-dark: #1e2029;
    --text-dark: #f2f3f8;
    --text-secondary-dark: #b4bcd0;
    --border-dark: #2e3145;
    --primary-dark: #6d5dfc;
    --secondary-dark: #4839eb;
    --success-dark: #22c55e;
    --warning-dark: #f59e0b;
    --danger-dark: #ef4444;
    --info-dark: #3b82f6;

    /* Light mode colors - cleaner palette */
    --bg-light: #f7f8fc;
    --card-bg-light: #ffffff;
    --text-light: #1a202c;
    --text-secondary-light: #64748b;
    --border-light: #e2e8f0;
    --primary-light: #5a47e8;
    --secondary-light: #4c3fe0;
    --success-light: #10b981;
    --warning-light: #f59e0b;
    --danger-light: #ef4444;
    --info-light: #3b82f6;

    /* Shared properties */
    --border-radius: 10px;
    --border-radius-sm: 6px;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Apply theme variables based on data attribute */
[data-theme="light"] {
    --bg: var(--bg-light);
    --card-bg: var(--card-bg-light);
    --text: var(--text-light);
    --text-secondary: var(--text-secondary-light);
    --border-color: var(--border-light);
    --primary-color: var(--primary-light);
    --secondary-color: var(--secondary-light);
    --success-color: var(--success-light);
    --warning-color: var(--warning-light);
    --danger-color: var(--danger-light);
    --info-color: var(--info-light);
    --shadow-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg: var(--bg-dark);
    --card-bg: var(--card-bg-dark);
    --text: var(--text-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-dark);
    --primary-color: var(--primary-dark);
    --secondary-color: var(--secondary-dark);
    --success-color: var(--success-dark);
    --warning-color: var(--warning-dark);
    --danger-color: var(--danger-dark);
    --info-color: var(--info-dark);
    --shadow-color: rgba(0, 0, 0, 0.3);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    opacity: 0.85;
}

/* Modern navbar */
.navbar {
    background-color: var(--card-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.5px;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.nav-item:hover {
    background-color: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
}

.nav-item i {
    font-size: 1.1rem;
}

.theme-toggle-icon {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle-icon:hover {
    background-color: rgba(var(--primary-color-rgb), 0.1);
}

/* Container and layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

main {
    min-height: calc(100vh - 160px);
}

/* Card styles */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

/* Button styles - modernized and consistent */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    background-color: var(--card-bg);
    color: var(--text);
    box-shadow: inset 0 0 0 1px var(--border-color);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--border-color);
}

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

.btn.primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 5px rgba(var(--primary-color-rgb), 0.3);
}

.btn.primary:hover {
    box-shadow: 0 4px 10px rgba(var(--primary-color-rgb), 0.4);
}

.btn.secondary {
    background-color: var(--secondary-color);
    color: white;
    box-shadow: 0 2px 5px rgba(var(--secondary-color-rgb), 0.3);
}

.btn.secondary:hover {
    box-shadow: 0 4px 10px rgba(var(--secondary-color-rgb), 0.4);
}

.btn.success {
    background-color: var(--success-color);
    color: white;
}

.btn.danger {
    background-color: var(--danger-color);
    color: white;
}

.btn.sm {
    padding: 0.3rem 0.75rem;
    font-size: 0.85rem;
}

.btn.lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

.btn i {
    font-size: 1.1em;
}

/* Modal styles - beautiful and animated */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    overflow: auto;
    backdrop-filter: blur(4px);
}

.modal.visible {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    overflow: hidden;
    margin: 2rem;
    border: 1px solid var(--border-color);
}

.modal.visible .modal-content {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--text);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    padding: 0.25rem;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--danger-color);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* Form elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: var(--card-bg);
    color: var(--text);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* File browser styles */
.browser-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.browser-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.browser-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.browser-title h2 {
    margin: 0;
    font-size: 1.75rem;
}

.browser-title i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.browser-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.search-input {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: var(--card-bg);
    color: var(--text);
    min-width: 200px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

/* Context menu for right-click */
.context-menu {
    position: fixed;
    background: var(--card-bg);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    min-width: 180px;
    border: 1px solid var(--border-color);
    padding: 0.5rem 0;
    animation: fadeIn 0.2s ease;
}

.context-menu-item {
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text);
}

.context-menu-item:hover {
    background-color: rgba(var(--primary-color-rgb), 0.1);
}

.context-menu-item i {
    width: 1rem;
    text-align: center;
    color: var(--text-secondary);
}

.context-menu-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.5rem 0;
}

/* File and folder items */
.files-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.5rem;
}

.files-container.list-view {
    display: table;
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.5rem;
}

.file-item,
.folder-item {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
}

.file-item:hover,
.folder-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.file-icon,
.folder-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.folder-icon {
    color: #f9d71c;
}

.item-name {
    font-size: 0.95rem;
    word-break: break-word;
    margin-bottom: 0.25rem;
}

.item-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

.slide-up {
    animation: slideUp 0.3s ease;
}

/* Alerts */
.alerts {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 1050;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 350px;
}

.alert {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--info-color);
    animation: slideUp 0.3s ease;
}

.alert.success {
    border-left-color: var(--success-color);
}

.alert.error {
    border-left-color: var(--danger-color);
}

.alert.warning {
    border-left-color: var(--warning-color);
}

.alert-content {
    flex: 1;
    padding-right: 0.75rem;
}

.alert .close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.25rem;
    line-height: 1;
    transition: var(--transition);
}

.alert .close:hover {
    color: var(--danger-color);
}

.alert.fade-out {
    animation: fadeOut 0.3s ease forwards;
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(10px);
    }
}

/* Custom transitions and animations for Google Drive-like experience */

/* Folder enter animation */
.folder-transition-enter {
    opacity: 0;
    transform: translateY(20px);
}

.folder-transition-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.3s ease-out;
}

/* Smooth hover effects */
.folder-item,
.file-item {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.folder-item:hover,
.file-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

/* File hover actions */
.file-actions {
    position: absolute;
    right: 10px;
    top: 10px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.file-item:hover .file-actions,
.folder-item:hover .file-actions {
    opacity: 1;
}

/* Folder navigation transitions */
.files-container {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.files-container.changing {
    opacity: 0;
    transform: translateY(10px);
}

/* File upload animation */
@keyframes upload-progress {
    0% {
        width: 0%;
    }

    100% {
        width: 100%;
    }
}

.upload-progress-bar {
    animation: upload-progress 1.5s ease-in-out;
}

/* Navigation sidebar animation */
.sidebar {
    transition: transform 0.3s ease, width 0.3s ease;
}

.sidebar.collapsed {
    transform: translateX(-100%);
    width: 0;
}

/* Scale animation for new items */
@keyframes new-item-appear {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.new-item {
    animation: new-item-appear 0.3s forwards;
}