/* ==========================================================================
   Dymo S3 Object Storage Viewer - Modern Design System
   ========================================================================== */

:root {
  --bg-page: #080d1a;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-surface: #0f172a;
  --bg-input: #0b1329;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #38bdf8;
  --border-hover: rgba(56, 189, 248, 0.4);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.25);
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  
  --danger: #f43f5e;
  --danger-bg: rgba(244, 63, 94, 0.12);
  --success: #10b981;
  --warning: #f59e0b;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.07);
  --shadow-modal: 0 25px 60px -15px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.1);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.35);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-page);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(129, 140, 248, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ==========================================================================
   Typography & Accents
   ========================================================================== */

h1, h2, h3 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   Login Screen
   ========================================================================== */

#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-card);
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15) 0%, rgba(129, 140, 248, 0.15) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  color: var(--accent);
  box-shadow: var(--shadow-glow);
}

.login-header h1 {
  font-size: 2rem;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.login-header .subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.alert-box {
  background: var(--danger-bg);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fda4af;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

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

.password-wrapper input {
  width: 100%;
  padding: 0.85rem 3rem 0.85rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.password-wrapper input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.btn-toggle-pw {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.btn-toggle-pw:hover {
  color: var(--text-main);
}

.btn-primary {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.5rem;
  color: #0b0f19;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-icon {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.1);
}

.login-footer {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Dashboard Layout
   ========================================================================== */

#dashboard-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.top-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(8, 13, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-badge {
  color: var(--accent);
  display: flex;
  align-items: center;
}

.brand-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}

.bucket-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
}

.bucket-selector-wrapper select {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
}

.bucket-selector-wrapper select option {
  background: var(--bg-surface);
  color: var(--text-main);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: #6ee7b7;
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ==========================================================================
   Explorer Control Bar & Breadcrumbs
   ========================================================================== */

.explorer-bar {
  background: rgba(15, 23, 42, 0.6);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.breadcrumb-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 250px;
}

.btn-crumb-up {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-crumb-up:not(:disabled):hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
}

.btn-crumb-up:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem;
  font-size: 0.9rem;
}

.crumb-item {
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.crumb-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.crumb-item.current {
  color: var(--accent);
  font-weight: 600;
  cursor: default;
}

.crumb-sep {
  color: var(--text-dim);
  user-select: none;
}

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

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

.search-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 0.5rem 2rem 0.5rem 2.2rem;
  font-size: 0.85rem;
  width: 240px;
  transition: border-color var(--transition-fast), width var(--transition-normal);
}

.search-box input:focus {
  outline: none;
  border-color: var(--border-focus);
  width: 280px;
}

.btn-clear {
  position: absolute;
  right: 0.5rem;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem;
  font-size: 0.8rem;
}

.view-switch {
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.btn-view-mode {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.btn-view-mode:hover {
  color: var(--text-main);
}

.btn-view-mode.active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent);
}

/* ==========================================================================
   Stats Strip
   ========================================================================== */

.path-info-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.5rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* ==========================================================================
   File Viewport & Items
   ========================================================================== */

.file-viewport {
  flex: 1;
  padding: 1.5rem;
  position: relative;
}

.loading-state, .empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 1rem;
  text-align: center;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.25rem;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

/* Grid View */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.grid-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  user-select: none;
}

.grid-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.grid-card-icon {
  font-size: 2.2rem;
  line-height: 1;
}

.grid-card-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.grid-card-name {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.grid-card-meta {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* Table View */
.items-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.items-table th {
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
}

.items-table th:hover {
  color: var(--text-main);
}

.items-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
}

.items-table tr {
  cursor: pointer;
  transition: background var(--transition-fast);
}

.items-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.05);
}

.table-name-cell {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-main);
  font-weight: 500;
}

.table-icon {
  font-size: 1.25rem;
}

.table-actions-cell {
  display: flex;
  gap: 0.5rem;
}

/* ==========================================================================
   Preview Modal
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease-out;
}

.modal-card {
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.modal-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow: hidden;
}

.modal-file-icon {
  font-size: 1.8rem;
}

.modal-name-wrap h2 {
  font-size: 1.1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 600px;
}

.modal-meta-text {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.btn-close {
  background: rgba(255, 255, 255, 0.05);
  border: none;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.btn-close:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-main);
}

.modal-body {
  flex: 1;
  overflow: auto;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 250px;
  background: #090d16;
}

.modal-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--text-muted);
}

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

.preview-img {
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.preview-pdf, .preview-iframe {
  width: 100%;
  height: 60vh;
  border: none;
  border-radius: var(--radius-sm);
}

.preview-video {
  max-width: 100%;
  max-height: 60vh;
  border-radius: var(--radius-sm);
}

.preview-audio {
  width: 100%;
  max-width: 500px;
}

.preview-code-block {
  width: 100%;
  max-height: 60vh;
  background: #060911;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
  overflow: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: #e2e8f0;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.preview-unsupported {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}

.preview-unsupported-icon {
  font-size: 3.5rem;
  margin-bottom: 0.75rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg-surface);
}

/* ==========================================================================
   Spinners & Toasts
   ========================================================================== */

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-large {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(56, 189, 248, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 1rem;
}

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

.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--accent);
  box-shadow: var(--shadow-glow);
  color: var(--text-main);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 768px) {
  .top-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .nav-right {
    justify-content: flex-end;
  }

  .explorer-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box input {
    width: 100%;
  }

  .search-box input:focus {
    width: 100%;
  }

  .modal-footer {
    flex-direction: column;
  }

  .modal-footer .footer-left,
  .modal-footer .footer-right {
    width: 100%;
  }

  .modal-footer .btn-secondary,
  .modal-footer .btn-primary {
    width: 100%;
  }
}