/**
 * Google Drive Widget - Standalone Styles
 * Version: 1.0.0
 * 
 * Self-contained styles for the embeddable Google Drive widget
 * Includes light, dark, and ATW themes
 */

/* ============================================
   BASE STYLES
   ============================================ */

.gdrive-widget {
    --gdrive-primary: #4285f4;
    --gdrive-bg: #ffffff;
    --gdrive-surface: #f8f9fa;
    --gdrive-border: #e0e0e0;
    --gdrive-text: #202124;
    --gdrive-text-secondary: #5f6368;
    --gdrive-hover: #f1f3f4;
    --gdrive-shadow: rgba(0, 0, 0, 0.1);
    --gdrive-radius: 8px;
    --gdrive-spacing: 16px;
    
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--gdrive-text);
    background: var(--gdrive-bg);
    border-radius: var(--gdrive-radius);
    overflow: hidden;
}

.gdrive-widget * {
    box-sizing: border-box;
}

.gdrive-widget__inner {
    padding: var(--gdrive-spacing);
}

/* ============================================
   HEADER (Search & Filters)
   ============================================ */

.gdrive-widget__header {
    display: flex;
    gap: 12px;
    margin-bottom: var(--gdrive-spacing);
    flex-wrap: wrap;
}

.gdrive-widget__search {
    flex: 1;
    min-width: 200px;
}

.gdrive-widget__search-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gdrive-border);
    border-radius: var(--gdrive-radius);
    background: var(--gdrive-surface);
    color: var(--gdrive-text);
    font-size: 14px;
    transition: all 0.2s;
}

.gdrive-widget__search-input:focus {
    outline: none;
    border-color: var(--gdrive-primary);
    background: var(--gdrive-bg);
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

.gdrive-widget__filters {
    flex-shrink: 0;
}

.gdrive-widget__filter-select {
    padding: 10px 14px;
    border: 1px solid var(--gdrive-border);
    border-radius: var(--gdrive-radius);
    background: var(--gdrive-surface);
    color: var(--gdrive-text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.gdrive-widget__filter-select:focus {
    outline: none;
    border-color: var(--gdrive-primary);
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.gdrive-widget__breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--gdrive-spacing);
    padding: 8px 0;
    font-size: 13px;
}

.gdrive-widget__breadcrumb-item {
    color: var(--gdrive-primary);
    text-decoration: none;
    transition: opacity 0.2s;
}

.gdrive-widget__breadcrumb-item:hover {
    opacity: 0.7;
    text-decoration: underline;
}

.gdrive-widget__breadcrumb-item--active {
    color: var(--gdrive-text);
    font-weight: 500;
}

.gdrive-widget__breadcrumb-separator {
    color: var(--gdrive-text-secondary);
    user-select: none;
}

/* ============================================
   CONTENT AREA
   ============================================ */

.gdrive-widget__content {
    min-height: 200px;
}

.gdrive-widget__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

/* List layout */
.gdrive-widget--list .gdrive-widget__grid {
    grid-template-columns: 1fr;
}

/* List layout file cards */
.gdrive-widget--list .gdrive-widget__file-card {
    flex-direction: row;
    align-items: center;
    gap: 16px;
}

.gdrive-widget--list .gdrive-widget__file-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 0;
}

/* ============================================
   LOADING STATE
   ============================================ */

.gdrive-widget__loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    color: var(--gdrive-text-secondary);
}

.gdrive-widget__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gdrive-border);
    border-top-color: var(--gdrive-primary);
    border-radius: 50%;
    animation: gdrive-spin 0.8s linear infinite;
    margin-bottom: 16px;
}

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

/* ============================================
   ERROR STATE
   ============================================ */

.gdrive-widget__error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    color: #dc2626;
}

.gdrive-widget__error-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
}

.gdrive-widget__error p {
    margin: 0;
    text-align: center;
}

/* ============================================
   EMPTY STATE
   ============================================ */

.gdrive-widget__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    color: var(--gdrive-text-secondary);
}

.gdrive-widget__empty-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.gdrive-widget__empty p {
    margin: 0;
    text-align: center;
}

/* ============================================
   DARK THEME
   ============================================ */

.gdrive-widget--dark {
    --gdrive-bg: #1f2937;
    --gdrive-surface: #374151;
    --gdrive-border: #4b5563;
    --gdrive-text: #f9fafb;
    --gdrive-text-secondary: #d1d5db;
    --gdrive-hover: #4b5563;
    --gdrive-shadow: rgba(0, 0, 0, 0.3);
}

/* ============================================
   ATW DARK THEME
   ============================================ */

.gdrive-widget--atw-dark {
    --gdrive-primary: #2563eb;
    --gdrive-bg: #0f172a;
    --gdrive-surface: #1e293b;
    --gdrive-border: #334155;
    --gdrive-text: #f1f5f9;
    --gdrive-text-secondary: #cbd5e1;
    --gdrive-hover: #334155;
    --gdrive-shadow: rgba(0, 0, 0, 0.4);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .gdrive-widget__grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 12px;
    }

    .gdrive-widget__header {
        flex-direction: column;
    }

    .gdrive-widget__search,
    .gdrive-widget__filters {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .gdrive-widget__grid {
        grid-template-columns: 1fr;
    }

    .gdrive-widget__inner {
        padding: 12px;
    }
}

/* ============================================
   FILE CARDS
   ============================================ */

.gdrive-widget__file-card {
    display: flex;
    flex-direction: column;
    padding: 16px;
    background: var(--gdrive-surface);
    border: 1px solid var(--gdrive-border);
    border-radius: var(--gdrive-radius);
    cursor: pointer;
    transition: all 0.2s;
}

.gdrive-widget__file-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--gdrive-shadow);
    border-color: var(--gdrive-primary);
}

.gdrive-widget__file-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    color: var(--gdrive-primary);
}

.gdrive-widget__file-icon svg {
    width: 100%;
    height: 100%;
}

.gdrive-widget__file-info {
    flex: 1;
}

.gdrive-widget__file-name {
    font-weight: 500;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gdrive-widget__file-meta {
    display: flex;
    gap: 8px;
    font-size: 12px;
    color: var(--gdrive-text-secondary);
}

/* File type colors */
.gdrive-widget__file-card--folder .gdrive-widget__file-icon { color: #fbbf24; }
.gdrive-widget__file-card--pdf .gdrive-widget__file-icon { color: #ef4444; }
.gdrive-widget__file-card--document .gdrive-widget__file-icon { color: #3b82f6; }
.gdrive-widget__file-card--spreadsheet .gdrive-widget__file-icon { color: #10b981; }
.gdrive-widget__file-card--presentation .gdrive-widget__file-icon { color: #f59e0b; }
.gdrive-widget__file-card--image .gdrive-widget__file-icon { color: #a855f7; }
.gdrive-widget__file-card--video .gdrive-widget__file-icon { color: #06b6d4; }

/* ============================================
   DOCUMENT VIEWER MODAL
   ============================================ */

.gdrive-doc-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
    display: none;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.gdrive-doc-modal--open {
    display: block;
}

.gdrive-doc-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
}

.gdrive-doc-modal__container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.gdrive-doc-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid #e5e7eb;
    background: #f9fafb;
}

.gdrive-doc-modal__title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: #111827;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gdrive-doc-modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    color: #6b7280;
    transition: all 0.2s;
}

.gdrive-doc-modal__close:hover {
    background: #e5e7eb;
    color: #111827;
}

.gdrive-doc-modal__close svg {
    width: 20px;
    height: 20px;
}

.gdrive-doc-modal__body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    background: #ffffff;
}

.gdrive-doc-modal__loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px;
    color: #6b7280;
}

.gdrive-doc-modal__content {
    line-height: 1.7;
    color: #374151;
}

/* Document content styling - override Google's styles */
.gdrive-doc-content {
    font-size: 16px;
}

.gdrive-doc-content h1,
.gdrive-doc-content h2,
.gdrive-doc-content h3,
.gdrive-doc-content h4,
.gdrive-doc-content h5,
.gdrive-doc-content h6 {
    color: #111827;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    font-weight: 600;
    line-height: 1.3;
}

.gdrive-doc-content h1 { font-size: 2em; }
.gdrive-doc-content h2 { font-size: 1.5em; }
.gdrive-doc-content h3 { font-size: 1.25em; }
.gdrive-doc-content h4 { font-size: 1.1em; }

.gdrive-doc-content p {
    margin-bottom: 1em;
}

.gdrive-doc-content ul,
.gdrive-doc-content ol {
    margin-bottom: 1em;
    padding-left: 1.5em;
}

.gdrive-doc-content li {
    margin-bottom: 0.5em;
}

.gdrive-doc-content a {
    color: #2563eb;
    text-decoration: underline;
}

.gdrive-doc-content a:hover {
    color: #1d4ed8;
}

.gdrive-doc-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.gdrive-doc-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1em;
}

.gdrive-doc-content th,
.gdrive-doc-content td {
    padding: 8px 12px;
    border: 1px solid #e5e7eb;
    text-align: left;
}

.gdrive-doc-content th {
    background: #f9fafb;
    font-weight: 600;
}

.gdrive-doc-content blockquote {
    margin: 1em 0;
    padding-left: 1em;
    border-left: 4px solid #e5e7eb;
    color: #6b7280;
    font-style: italic;
}

.gdrive-doc-content code {
    background: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: ui-monospace, monospace;
    font-size: 0.9em;
}

.gdrive-doc-content pre {
    background: #1f2937;
    color: #f9fafb;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1em;
}

.gdrive-doc-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* Error state in modal */
.gdrive-doc-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px;
    text-align: center;
    color: #6b7280;
}

.gdrive-doc-fallback-link {
    display: inline-block;
    margin-top: 16px;
    padding: 10px 20px;
    background: #2563eb;
    color: #ffffff !important;
    text-decoration: none !important;
    border-radius: 8px;
    font-weight: 500;
    transition: background 0.2s;
}

.gdrive-doc-fallback-link:hover {
    background: #1d4ed8;
}

/* Dark theme for modal */
.gdrive-doc-modal--dark .gdrive-doc-modal__container,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__container {
    background: #1f2937;
}

.gdrive-doc-modal--dark .gdrive-doc-modal__header,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__header {
    background: #111827;
    border-color: #374151;
}

.gdrive-doc-modal--dark .gdrive-doc-modal__title,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__title {
    color: #f9fafb;
}

.gdrive-doc-modal--dark .gdrive-doc-modal__close,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__close {
    color: #9ca3af;
}

.gdrive-doc-modal--dark .gdrive-doc-modal__close:hover,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__close:hover {
    background: #374151;
    color: #f9fafb;
}

.gdrive-doc-modal--dark .gdrive-doc-modal__body,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__body {
    background: #1f2937;
}

.gdrive-doc-modal--dark .gdrive-doc-modal__content,
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__content {
    color: #e5e7eb;
}

.gdrive-doc-modal--dark .gdrive-doc-content h1,
.gdrive-doc-modal--dark .gdrive-doc-content h2,
.gdrive-doc-modal--dark .gdrive-doc-content h3,
.gdrive-doc-modal--dark .gdrive-doc-content h4,
.gdrive-doc-modal--dark .gdrive-doc-content h5,
.gdrive-doc-modal--dark .gdrive-doc-content h6,
.gdrive-doc-modal--atw-dark .gdrive-doc-content h1,
.gdrive-doc-modal--atw-dark .gdrive-doc-content h2,
.gdrive-doc-modal--atw-dark .gdrive-doc-content h3,
.gdrive-doc-modal--atw-dark .gdrive-doc-content h4,
.gdrive-doc-modal--atw-dark .gdrive-doc-content h5,
.gdrive-doc-modal--atw-dark .gdrive-doc-content h6 {
    color: #f9fafb;
}

.gdrive-doc-modal--dark .gdrive-doc-content th,
.gdrive-doc-modal--atw-dark .gdrive-doc-content th {
    background: #374151;
}

.gdrive-doc-modal--dark .gdrive-doc-content th,
.gdrive-doc-modal--dark .gdrive-doc-content td,
.gdrive-doc-modal--atw-dark .gdrive-doc-content th,
.gdrive-doc-modal--atw-dark .gdrive-doc-content td {
    border-color: #4b5563;
}

.gdrive-doc-modal--dark .gdrive-doc-content blockquote,
.gdrive-doc-modal--atw-dark .gdrive-doc-content blockquote {
    border-color: #4b5563;
    color: #9ca3af;
}

.gdrive-doc-modal--dark .gdrive-doc-content code,
.gdrive-doc-modal--atw-dark .gdrive-doc-content code {
    background: #374151;
    color: #f9fafb;
}

/* ATW Dark specific */
.gdrive-doc-modal--atw-dark .gdrive-doc-modal__container {
    background: #0f172a;
}

.gdrive-doc-modal--atw-dark .gdrive-doc-modal__header {
    background: #1e293b;
    border-color: #334155;
}

.gdrive-doc-modal--atw-dark .gdrive-doc-modal__body {
    background: #0f172a;
}

/* Responsive modal */
@media (max-width: 768px) {
    .gdrive-doc-modal__container {
        width: 95%;
        max-height: 95vh;
        border-radius: 8px;
    }

    .gdrive-doc-modal__header {
        padding: 12px 16px;
    }

    .gdrive-doc-modal__title {
        font-size: 16px;
    }

    .gdrive-doc-modal__body {
        padding: 16px;
    }

    .gdrive-doc-content {
        font-size: 15px;
    }
}

/* ============================================
   INLINE DOCUMENT VIEWER
   ============================================ */

/* When viewing document inline, remove container styling */
.gdrive-widget--viewing-doc {
    background: transparent !important;
    border-radius: 0;
}

.gdrive-widget--viewing-doc .gdrive-widget__inner {
    padding: 0;
}

/* Hide header (search/filters) when viewing inline doc */
.gdrive-widget--viewing-doc .gdrive-widget__header {
    display: none !important;
}

/* Hide breadcrumbs when viewing inline doc - navigation is in doc header */
.gdrive-widget--viewing-doc #gdrive-breadcrumbs,
.gdrive-widget--viewing-doc .gdrive-widget__breadcrumbs {
    display: none !important;
}

.gdrive-widget__doc-inline {
    /* No min-height - let content determine size */
}

.gdrive-widget__doc-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 0 24px 0;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--gdrive-border);
}

.gdrive-widget__doc-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gdrive-surface);
    border: 1px solid var(--gdrive-border);
    border-radius: var(--gdrive-radius);
    color: var(--gdrive-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.gdrive-widget__doc-back:hover {
    background: var(--gdrive-hover);
    border-color: var(--gdrive-primary);
    color: var(--gdrive-primary);
}

.gdrive-widget__doc-back svg {
    width: 18px;
    height: 18px;
}

.gdrive-widget__doc-external {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--gdrive-border);
    border-radius: var(--gdrive-radius);
    color: var(--gdrive-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
    margin-left: auto;
}

.gdrive-widget__doc-external:hover {
    background: var(--gdrive-surface);
    color: var(--gdrive-text);
}

.gdrive-widget__doc-external svg {
    width: 16px;
    height: 16px;
}

.gdrive-widget__doc-back-btn {
    display: inline-block;
    margin-top: 16px;
    padding: 10px 20px;
    background: var(--gdrive-surface);
    border: 1px solid var(--gdrive-border);
    border-radius: var(--gdrive-radius);
    color: var(--gdrive-text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.gdrive-widget__doc-back-btn:hover {
    background: var(--gdrive-hover);
    border-color: var(--gdrive-primary);
}

/* Breadcrumb icon for document */
.gdrive-widget__breadcrumb-icon {
    width: 14px;
    height: 14px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 4px;
}

.gdrive-widget__breadcrumb-item--document {
    display: inline-flex;
    align-items: center;
}

/* Inline doc content styling for dark themes */
.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content {
    color: var(--gdrive-text);
}

.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content h1,
.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content h2,
.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content h3,
.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content h4,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content h1,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content h2,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content h3,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content h4 {
    color: var(--gdrive-text);
}

.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content a,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content a {
    color: #60a5fa;
}

.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content code,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content code {
    background: var(--gdrive-surface);
    color: var(--gdrive-text);
}

.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content th,
.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content td,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content th,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content td {
    border-color: var(--gdrive-border);
}

.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content th,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content th {
    background: var(--gdrive-surface);
}

.gdrive-widget--dark .gdrive-widget__doc-inline .gdrive-doc-content blockquote,
.gdrive-widget--atw-dark .gdrive-widget__doc-inline .gdrive-doc-content blockquote {
    border-color: var(--gdrive-border);
    color: var(--gdrive-text-secondary);
}

/* Responsive inline doc */
@media (max-width: 768px) {
    .gdrive-widget__doc-header {
        flex-direction: column;
        align-items: flex-start;
    }
}