/* Global Resets & Base System */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Scale */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

/* Sizing Utilities for Monochrome Vector Icons */
.w-4 { width: 16px; }
.h-4 { height: 16px; }
.w-5 { width: 20px; }
.h-5 { height: 20px; }
.w-6 { width: 24px; }
.h-6 { height: 24px; }
.w-8 { width: 32px; }
.h-8 { height: 32px; }
.w-10 { width: 40px; }
.h-10 { height: 40px; }
.w-16 { width: 64px; }
.h-16 { height: 64px; }

h1 {
  font-size: 2.25rem;
  line-height: 1.2;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: calc(var(--grid-gap-base) / 2);
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

a {
  color: var(--color-primary-accent);
  text-decoration: none;
  transition: color 0.2s ease-out;
}

a:hover {
  color: var(--color-destructive);
}

code, .mono-data {
  font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", "JetBrains Mono", Courier New, monospace;
  font-size: 0.85em;
  letter-spacing: -0.01em;
}

/* Base Inputs & Controls (Touch Targets >= 44px) */
input[type="text"],
input[type="password"],
input[type="file"],
select,
button,
.btn {
  height: var(--interactive-height);
  font-family: inherit;
  font-size: 0.9em;
  border-radius: var(--border-radius-sm);
  outline: none;
  transition: all 0.2s ease-out;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-surface);
  color: var(--color-text-primary);
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--color-primary-accent);
  box-shadow: 0 0 0 2px rgba(61, 90, 128, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #2b3f5a;
}

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

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

.btn-destructive {
  background-color: var(--color-destructive);
  color: #ffffff;
}

.btn-destructive:hover {
  background-color: #d15638;
}

/* Layout Framework */
.header-nav {
  height: 4rem; /* h-16 */
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
}

.header-container {
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--color-text-primary);
  font-size: 1.1rem;
}

.brand-section svg {
  color: var(--color-primary-accent);
}

.user-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
}

.user-badge {
  background-color: var(--color-neutral-shaded);
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.user-badge svg {
  color: var(--color-primary-accent);
}

.btn-logout {
  color: var(--color-destructive);
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background-color 0.2s ease;
}

.btn-logout:hover {
  background-color: rgba(238, 108, 77, 0.08);
}

.main-content {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: var(--grid-gap-base) 24px 40px;
}

/* Breadcrumbs Section */
.breadcrumbs-bar {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 12px 18px;
  margin-bottom: var(--grid-gap-base);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.breadcrumbs-list {
  display: flex;
  align-items: center;
  list-style: none;
  font-size: 0.95rem;
}

.breadcrumbs-item {
  display: flex;
  align-items: center;
  font-weight: 500;
}

.breadcrumbs-item a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-secondary);
}

.breadcrumbs-item a:hover {
  color: var(--color-primary-accent);
}

.breadcrumbs-item:first-child a {
  font-weight: 700;
  color: var(--color-text-primary);
}

.breadcrumbs-separator {
  color: var(--color-secondary-accent);
  padding: 0 10px;
  display: flex;
  align-items: center;
}

/* Control Controls Bar (Search + View Toggles) */
.controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: var(--grid-gap-base);
  flex-wrap: wrap;
}

.search-wrapper {
  position: relative;
  flex: 1;
  min-width: 280px;
  max-width: 480px;
}

.search-input {
  padding-left: 40px !important;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  pointer-events: none;
}

.view-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toggle-group {
  display: flex;
  background-color: var(--color-border);
  padding: 2px;
  border-radius: var(--border-radius-sm);
}

.toggle-btn {
  background: none;
  border: none;
  padding: 0 12px;
  height: 36px;
  border-radius: calc(var(--border-radius-sm) - 1px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all 0.15s ease;
}

.toggle-btn.active {
  background-color: var(--color-bg-surface);
  color: var(--color-primary-accent);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.action-toggle-btn {
  color: var(--color-text-secondary);
}

.action-toggle-btn:hover {
  color: var(--color-primary-accent);
  background-color: var(--color-neutral-shaded);
}

/* Custom Drag and Drop Zone Container */
.upload-container {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 20px;
  margin-bottom: var(--grid-gap-base);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.upload-zone-compact {
  border: 2px dashed var(--color-secondary-accent);
  border-radius: var(--border-radius-sm);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  background-color: var(--color-bg-base);
  transition: all 0.2s ease-out;
}

.upload-zone-compact:hover {
  background-color: rgba(152, 193, 217, 0.08);
  border-color: var(--color-primary-accent);
}

.upload-zone-compact input[type="file"] {
  display: none;
}

.upload-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
}

.upload-zone-content svg {
  color: var(--color-primary-accent);
}

.upload-submit-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
}

.upload-pass-input {
  max-width: 220px;
}

/* Fullscreen Drag Over Modal */
#fullscreen-dropzone {
  position: fixed;
  inset: 0;
  background-color: rgba(61, 90, 128, 0.95);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease-out;
}

#fullscreen-dropzone.active {
  opacity: 1;
}

.dropzone-overlay-box {
  width: calc(100% - 80px);
  height: calc(100% - 80px);
  border: 3px dashed rgba(255, 255, 255, 0.6);
  border-radius: var(--border-radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.dropzone-overlay-box h2 {
  color: #ffffff;
  font-size: 2rem;
}

/* File Browser Workspace Views */

/* 1. List View System */
.list-view-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.list-view-table th,
.list-view-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.list-view-table th {
  background-color: var(--color-neutral-shaded);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.list-view-table tr:last-child td {
  border-bottom: none;
}

.list-view-table tbody tr {
  transition: background-color 0.15s ease;
}

.list-view-table tbody tr:hover {
  background-color: rgba(61, 90, 128, 0.02);
}

.item-name-cell {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.item-name-cell svg {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.item-name-cell a {
  color: var(--color-text-primary);
}

.item-name-cell a:hover {
  color: var(--color-primary-accent);
}

.item-folder .item-name-cell svg {
  color: var(--color-primary-accent);
}

.list-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.icon-action-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-surface);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.icon-action-btn:hover {
  background-color: var(--color-neutral-shaded);
  color: var(--color-primary-accent);
  border-color: var(--color-secondary-accent);
}

.icon-action-btn.btn-delete:hover {
  color: var(--color-destructive);
  border-color: var(--color-destructive);
  background-color: rgba(238, 108, 77, 0.06);
}

/* 2. Grid/Gallery Card View System */
.grid-view-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--grid-gap-base);
}

.grid-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 220px;
  position: relative;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.grid-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.07);
  border-color: var(--color-secondary-accent);
}

.grid-card-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
  cursor: pointer;
  overflow: hidden;
}

.grid-card-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
}

.grid-card.folder .grid-card-icon-wrap {
  background-color: rgba(61, 90, 128, 0.08);
  color: var(--color-primary-accent);
}

.grid-card-img-wrap {
  width: 100%;
  height: 110px;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.grid-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.grid-card:hover .grid-card-img-wrap img {
  transform: scale(1.05);
}

.grid-card-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 4px;
}

.grid-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 8px;
  border-t: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
}

.grid-card-meta {
  display: flex;
  flex-direction: column;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.grid-card-actions {
  display: flex;
  gap: 6px;
}

.grid-card-actions .icon-action-btn {
  width: 32px;
  height: 32px;
}

/* Empty Folder Canvas */
.empty-directory-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 60px 20px;
  text-align: center;
  color: var(--color-text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.empty-directory-card svg {
  color: var(--color-secondary-accent);
}

/* Protected Authentication Gateway UI */
.login-split-container {
  min-h: 100dvh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
}

.login-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  width: 100%;
  max-width: 420px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(26, 26, 26, 0.06);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.login-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.login-header-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--border-radius-sm);
  background-color: rgba(61, 90, 128, 0.08);
  color: var(--color-primary-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.login-header p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.login-error-banner {
  background-color: rgba(238, 108, 77, 0.08);
  border: 1px solid var(--color-destructive);
  color: var(--color-destructive);
  padding: 12px;
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Lightweight Image Lightbox Overlay Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay-bg);
  backdrop-filter: blur(6px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease-out;
}

.lightbox-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  background-color: var(--color-bg-surface);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
  max-width: 900px;
  width: 100%;
  padding: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  transform: scale(0.95);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-modal.active .lightbox-content {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all 0.2s ease;
}

.lightbox-close:hover {
  background-color: var(--color-neutral-shaded);
  color: var(--color-destructive);
}

.lightbox-img-container {
  width: 100%;
  max-height: 70dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-bg-base);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
}

.lightbox-img-container img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.lightbox-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-right: 60px;
}

/* Stackable Toast System */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary-accent);
  border-radius: var(--border-radius-sm);
  padding: 16px 20px;
  box-shadow: 0 4px 12px rgba(26, 26, 26, 0.08);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  pointer-events: auto;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.active {
  transform: translateY(0);
  opacity: 1;
}

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

.toast-success svg {
  color: var(--color-success);
}

.toast-error {
  border-left-color: var(--color-destructive);
}

.toast-error svg {
  color: var(--color-destructive);
}

/* Hide Utility */
.hidden {
  display: none !important;
}

/* Responsive Custom Utilities */
@media (max-width: 768px) {
  .header-container {
    padding: 0 16px;
  }
  .main-content {
    padding: 16px 16px 30px;
  }
  .controls-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .search-wrapper {
    max-width: 100%;
  }
  .view-actions {
    justify-content: flex-end;
  }
  .list-view-table th:nth-child(2),
  .list-view-table td:nth-child(2) {
    display: none; /* Hide date/type on mobile */
  }
  .toast-container {
    bottom: auto;
    top: 20px;
    left: 16px;
    right: 16px;
  }
  .toast {
    transform: translateY(-20px);
  }
}