/* 
 * DocStore Studio Stylesheet (css/style.css)
 * ---------------------------------------------------
 * Design Tokens, Responsive Tiles/List View Modes,
 * Spacious 92vw x 90vh Modal Viewer, and Glassmorphism Cards.
 */

:root {
  --bg-color: #f8fafc;
  --panel-bg: #ffffff;
  --sidebar-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --accent-color: #06b6d4;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition-fast: all 0.15s ease;
}

[data-theme="dark"] {
  --bg-color: #0f172a;
  --panel-bg: #1e293b;
  --sidebar-bg: #1e293b;
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #312e81;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header Navbar */
.app-header {
  height: 64px;
  background-color: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

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

.app-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 26px;
}

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

.badge-pro {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: #ffffff;
  font-size: 10px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-muted);
}

.header-center {
  flex: 1;
  max-width: 540px;
  margin: 0 24px;
}

.search-box {
  display: flex;
  align-items: center;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  gap: 10px;
  transition: var(--transition-fast);
}

.search-box:focus-within {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.search-box svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-box input {
  border: none;
  background: transparent;
  width: 100%;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
}

.btn-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
}

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

.view-toggle-group {
  display: flex;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
}

.btn-view-mode {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-view-mode.active {
  background-color: var(--panel-bg);
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.btn-icon {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-icon:hover {
  background-color: var(--bg-color);
}

.user-profile-menu {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 12px;
  border-left: 1px solid var(--border-color);
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
}

.user-email {
  font-size: 11px;
  color: var(--text-muted);
}

/* Studio Layout Container */
.studio-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 64px);
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  flex-shrink: 0;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-fast);

}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--bg-color);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.paste-hint-card {
  background: var(--primary-light);
  border: 1px dashed var(--primary-color);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.paste-hint-card .hint-icon {
  font-size: 20px;
}

.paste-hint-card p {
  font-size: 12px;
  color: var(--text-main);
  line-height: 1.4;
}

.paste-hint-card kbd {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 1px 4px;
  font-size: 11px;
  font-family: monospace;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.category-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.category-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
}

.category-item:hover {
  background-color: var(--bg-color);
}

.category-item.active {
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-weight: 600;
}

.category-item .cat-icon {
  margin-right: 12px;
  font-size: 18px;
}

.category-item .cat-name {
  flex: 1;
}

.category-item .cat-count {
  font-size: 12px;
  background-color: var(--bg-color);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

.category-item.active .cat-count {
  background-color: var(--panel-bg);
  color: var(--primary-color);
}

/* Main Content Workspace */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg-color);
}

.content-toolbar {
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--panel-bg);
}

.active-category-title {
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}

.doc-counter-badge {
  font-size: 12px;
  color: var(--text-muted);
  background-color: var(--bg-color);
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 600;
}

.sort-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.form-select {
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 13px;
  outline: none;
}

/* Viewport Area */
.document-view-viewport {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

/* TILES / GRID VIEW MODE */
.document-view-viewport.tiles-mode {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.doc-card {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-fast);
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
}

.doc-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.doc-card-preview {
  height: 140px;
  background-color: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.doc-card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.doc-card-preview .type-icon-large {
  font-size: 48px;
}

.doc-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.doc-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.doc-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-main);
  word-break: break-word;
}

.category-pill {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  width: fit-content;
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.doc-card-footer {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
}

.doc-actions-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  border-radius: 4px;
}

.doc-actions-btn:hover {
  background-color: var(--bg-color);
  color: var(--text-main);
}

/* LIST VIEW MODE */
.document-view-viewport.list-mode {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.list-table-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr 80px;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border-color);
}

.doc-list-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr 80px;
  align-items: center;
  padding: 12px 16px;
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 13px;
}

.doc-list-row:hover {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
}

.doc-list-name {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.doc-list-icon {
  font-size: 20px;
}

/* Fullscreen Drag & Drop Overlay */
.fullscreen-dropzone {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(79, 70, 229, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dropzone-box {
  background-color: var(--panel-bg);
  padding: 40px 60px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
  border: 3px dashed var(--primary-color);
  animation: pulse 1.5s infinite alternate;
}

.drop-anim-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

@keyframes pulse {
  from { transform: scale(0.98); }
  to { transform: scale(1.02); }
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  background-color: var(--panel-bg);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.btn-close-modal {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.upload-drop-box {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  background-color: var(--bg-color);
  transition: var(--transition-fast);
  cursor: pointer;
}

.upload-drop-box:hover {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
}

.cloud-icon {
  font-size: 40px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary-color);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

.hidden-file-input {
  display: none;
}

/* SPACIOUS MODAL DOCUMENT VIEWER (92vw x 90vh View Space) */
.viewer-modal-card {
  background-color: var(--panel-bg);
  width: 92vw;
  height: 90vh;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.viewer-header {
  height: 60px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--panel-bg);
}

.viewer-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.viewer-title-group .file-type-icon {
  font-size: 28px;
}

.viewer-title-group h3 {
  font-size: 16px;
  font-weight: 700;
}

.viewer-meta-badges {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 2px;
}

.viewer-meta-badges .meta-info {
  font-size: 11px;
  color: var(--text-muted);
}

.viewer-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-tool {
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.btn-tool:hover {
  background-color: var(--border-color);
}

.btn-close-viewer {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 8px;
}

.btn-close-viewer:hover {
  background-color: var(--danger-color);
  color: white;
  border-color: var(--danger-color);
}

.viewer-viewport-body {
  flex: 1;
  background-color: #0f172a;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

.viewer-loading-spinner {
  position: absolute;
  color: white;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.viewer-content-frame {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-content-frame iframe {
  width: 100%;
  height: 100%;
  border: none;
  background-color: white;
}

.viewer-content-frame img {
  max-width: 95%;
  max-height: 95%;
  object-fit: contain;
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-sm);
  transition: transform 0.2s ease;
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 60vh;
  text-align: center;
  gap: 12px;
}

.empty-illustration {
  font-size: 64px;
}

.empty-state p {
  color: var(--text-muted);
  max-width: 400px;
  font-size: 14px;
}

.hidden {
  display: none !important;
}