/* CSS Design System for Web File Explorer */

:root {
    /* Fonts */
    --font-sans: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;

    /* Common Tokens */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 28px;
}

/* 1. THEMES */
body.theme-dark {
    --bg-main: #0B0F19;
    --bg-card: rgba(22, 28, 45, 0.45);
    --bg-card-hover: rgba(30, 41, 67, 0.6);
    --bg-input: rgba(13, 17, 28, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    --accent-primary: #6366F1; /* Indigo */
    --accent-primary-hover: #4F46E5;
    --accent-primary-glow: rgba(99, 102, 241, 0.15);
    --accent-success: #10B981;
    --accent-danger: #EF4444;
    --accent-danger-hover: #DC2626;
    --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-blur: 16px;
    --color-glow-1: rgba(99, 102, 241, 0.15);
    --color-glow-2: rgba(236, 72, 153, 0.1);
}

body.theme-light {
    --bg-main: #F3F7FA;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.9);
    --bg-input: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.06);
    --border-color-hover: rgba(0, 0, 0, 0.12);
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --accent-primary: #4F46E5; /* Darker Indigo */
    --accent-primary-hover: #3730A3;
    --accent-primary-glow: rgba(79, 70, 229, 0.1);
    --accent-success: #059669;
    --accent-danger: #DC2626;
    --accent-danger-hover: #B91C1C;
    --shadow-main: 0 8px 32px 0 rgba(31, 38, 135, 0.06);
    --glass-blur: 20px;
    --color-glow-1: rgba(79, 70, 229, 0.06);
    --color-glow-2: rgba(219, 39, 119, 0.04);
}

/* 2. BASE RESET & LAYOUT */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Glow effects in the background */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    transition: background var(--transition-normal);
}

.bg-glow-1 {
    top: -200px;
    left: -100px;
    background: var(--color-glow-1);
}

.bg-glow-2 {
    bottom: -200px;
    right: -100px;
    background: var(--color-glow-2);
}

.hidden {
    display: none !important;
}

/* Custom scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Buttons */
button {
    font-family: var(--font-sans);
    cursor: pointer;
    border: none;
    outline: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #FFFFFF;
    font-weight: 500;
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.6);
}

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

.btn-primary-subtle {
    background-color: var(--accent-primary-glow);
    color: var(--accent-primary);
    font-weight: 500;
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary-subtle:hover {
    background-color: var(--accent-primary);
    color: #FFFFFF;
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background-color: var(--accent-danger);
    color: #FFFFFF;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-icon:hover {
    border-color: var(--border-color-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-icon-subtle {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: var(--border-radius-sm);
}

.btn-icon-subtle:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.w-full {
    width: 100%;
}

/* Glassmorphism panel base */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-main);
}

/* 3. LOGIN PAGE */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    border-radius: var(--border-radius-xl);
    padding: 40px 32px;
    animation: fadeInDown 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-icon {
    width: 64px;
    height: 64px;
    background: var(--accent-primary-glow);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px auto;
    color: var(--accent-primary);
}

.logo-icon i {
    width: 32px;
    height: 32px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    width: 100%;
    padding: 14px 16px;
    padding-right: 48px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 15px;
    transition: all var(--transition-fast);
}

.password-input-wrapper input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.password-input-wrapper button {
    position: absolute;
    right: 12px;
}

.error-msg {
    color: var(--accent-danger);
    font-size: 12px;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 4. MAIN LAYOUT (APP) */
.app-wrapper {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: fadeIn 0.4s ease-out forwards;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 28px;
    border-radius: var(--border-radius-lg);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon-small {
    width: 40px;
    height: 40px;
    background: var(--accent-primary-glow);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.logo-icon-small i {
    width: 20px;
    height: 20px;
}

.header-brand h1 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-read-only {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    background-color: var(--accent-primary-glow);
    color: var(--accent-primary);
    border-radius: 20px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
}

.user-badge i {
    width: 14px;
    height: 14px;
    color: var(--accent-success);
}

.app-main {
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
}

/* CONTROLS BAR */
.controls-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    border-radius: var(--border-radius-lg);
}

/* Breadcrumbs styling */
.breadcrumbs-container {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 14px;
}

.breadcrumb-item {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
    pointer-events: none;
}

.breadcrumb-separator {
    color: var(--text-muted);
    font-size: 12px;
}

/* Search and Sort controls */
.search-sort-container {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 14px;
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.search-wrapper input {
    padding: 10px 16px 10px 38px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 14px;
    width: 220px;
    transition: all var(--transition-fast);
}

.search-wrapper input:focus {
    outline: none;
    border-color: var(--accent-primary);
    width: 260px;
}

.sort-wrapper select {
    padding: 10px 16px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 14px;
    outline: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sort-wrapper select:focus {
    border-color: var(--accent-primary);
}

.layout-toggle-wrapper {
    display: flex;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 3px;
}

.btn-layout {
    width: 34px;
    height: 34px;
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    background: transparent;
}

.btn-layout:hover {
    color: var(--text-secondary);
}

.btn-layout.active {
    background-color: var(--bg-main);
    color: var(--accent-primary);
    box-shadow: var(--shadow-main);
}

/* EXPLORER SECTION */
.explorer-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.stats-banner {
    display: flex;
    justify-content: space-between;
    padding: 0 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* 5. GRID VIEW & LIST VIEW OF FILES */
.file-grid-container {
    display: grid;
    gap: 16px;
    min-height: 250px;
    transition: all var(--transition-normal);
}

/* Grid layout mode */
.file-grid-container.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* Card design for Grid view */
.file-grid-container.grid-view .explorer-item {
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.file-grid-container.grid-view .explorer-item:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.file-grid-container.grid-view .item-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    transition: transform var(--transition-normal);
}

.file-grid-container.grid-view .explorer-item:hover .item-icon-wrapper {
    transform: scale(1.08);
}

.file-grid-container.grid-view .explorer-item.item-dir .item-icon-wrapper {
    background-color: rgba(245, 158, 11, 0.1);
    color: #F59E0B;
}

.file-grid-container.grid-view .explorer-item.item-file .item-icon-wrapper {
    background-color: var(--accent-primary-glow);
    color: var(--accent-primary);
}

.file-grid-container.grid-view .explorer-item.item-file-code .item-icon-wrapper {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10B881;
}

.file-grid-container.grid-view .explorer-item.item-file-image .item-icon-wrapper {
    background-color: rgba(236, 72, 153, 0.1);
    color: #EC4899;
}

.file-grid-container.grid-view .item-icon-wrapper i {
    width: 32px;
    height: 32px;
}

.file-grid-container.grid-view .item-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    width: 100%;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    margin-bottom: 4px;
}

.file-grid-container.grid-view .item-meta {
    font-size: 11px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* List layout mode */
.file-grid-container.list-view {
    grid-template-columns: 1fr;
    gap: 8px;
}

/* Row design for List view */
.file-grid-container.list-view .explorer-item {
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 10px 16px;
    display: grid;
    grid-template-columns: 40px 1fr 120px 150px;
    align-items: center;
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
}

.file-grid-container.list-view .explorer-item:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateX(4px);
}

.file-grid-container.list-view .item-icon-wrapper {
    display: flex;
    align-items: center;
}

.file-grid-container.list-view .explorer-item.item-dir .item-icon-wrapper {
    color: #F59E0B;
}

.file-grid-container.list-view .explorer-item.item-file .item-icon-wrapper {
    color: var(--accent-primary);
}

.file-grid-container.list-view .explorer-item.item-file-code .item-icon-wrapper {
    color: #10B881;
}

.file-grid-container.list-view .explorer-item.item-file-image .item-icon-wrapper {
    color: #EC4899;
}

.file-grid-container.list-view .item-icon-wrapper i {
    width: 20px;
    height: 20px;
}

.file-grid-container.list-view .item-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    padding-right: 20px;
}

.file-grid-container.list-view .item-size,
.file-grid-container.list-view .item-date {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Empty state design */
.empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 40px;
    text-align: center;
    color: var(--text-muted);
}

.empty-state i {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.empty-state p {
    font-size: 13px;
}

/* 6. MODAL STYLES (PREVIEW) */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(5, 7, 12, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    animation: fadeIn 0.3s ease-out;
}

.modal-container {
    width: 100%;
    max-width: 960px;
    height: 80vh;
    border-radius: var(--border-radius-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title-area {
    display: flex;
    align-items: center;
    gap: 14px;
}

.modal-file-icon {
    width: 44px;
    height: 44px;
    background-color: var(--bg-input);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-file-icon.icon-dir { color: #F59E0B; }
.modal-file-icon.icon-file { color: var(--accent-primary); }
.modal-file-icon.icon-code { color: #10B881; }
.modal-file-icon.icon-image { color: #EC4899; }

.modal-file-icon i {
    width: 22px;
    height: 22px;
}

.modal-meta-info h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    word-break: break-all;
    max-width: 450px;
}

.modal-metadata {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.dot-separator {
    color: var(--text-muted);
}

.modal-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-body {
    flex: 1;
    overflow: auto;
    background-color: rgba(5, 7, 12, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Image preview styling */
.image-preview-container {
    max-width: 100%;
    max-height: 100%;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview-container img {
    max-width: 100%;
    max-height: 65vh;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    object-fit: contain;
}

/* Code preview styling */
.code-preview-container {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

/* Overriding Prism.js styling */
.code-preview-container pre {
    margin: 0 !important;
    padding: 24px !important;
    width: 100%;
    height: 100%;
    overflow: auto;
    background: #0D1117 !important; /* GitHub dark bg */
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
}

.code-preview-container code {
    font-family: var(--font-mono) !important;
}

/* Binary/Unsupported file styling */
.binary-preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.binary-preview-container i {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.binary-preview-container h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.binary-preview-container p {
    font-size: 14px;
    margin-bottom: 24px;
    max-width: 360px;
}

/* Loading spinner in modal */
.modal-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 7. ANIMATIONS */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@media(max-width: 768px) {
    .app-wrapper {
        padding: 12px;
    }
    .app-header {
        flex-direction: column;
        gap: 12px;
        padding: 16px;
        text-align: center;
    }
    .controls-bar {
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
    }
    .search-wrapper input {
        width: 100%;
    }
    .search-wrapper input:focus {
        width: 100%;
    }
    .file-grid-container.list-view .explorer-item {
        grid-template-columns: 36px 1fr 80px;
    }
    .file-grid-container.list-view .item-date {
        display: none;
    }
    .modal-container {
        height: 90vh;
    }
    .modal-header {
        padding: 16px;
    }
    .modal-meta-info h2 {
        max-width: 200px;
    }
}