:root {
  --brand-900: #021a40;
  --brand-700: #2d6068;
  --brand-600: #317aa0;
  --brand-500: #477ba2;
  --ink: #0f172a;
  --muted: #6b7280;
  --surface: #f3f4f6;
  --surface-2: #fbfbfb;
  --card: rgba(255, 255, 255, 0.82);
  --border: rgba(2, 26, 64, 0.12);
  --shadow: 0 20px 50px rgba(2, 26, 64, 0.15);
  --mark-slate: #64748b;
  --mark-blue: #2563eb;
  --mark-green: #16a34a;
  --mark-amber: #d97706;
  --mark-red: #dc2626;
  --mark-purple: #7c3aed;
  --mark-slate-bg: rgba(100, 116, 139, 0.1);
  --mark-blue-bg: rgba(37, 99, 235, 0.1);
  --mark-green-bg: rgba(22, 163, 74, 0.1);
  --mark-amber-bg: rgba(217, 119, 6, 0.1);
  --mark-red-bg: rgba(220, 38, 38, 0.1);
  --mark-purple-bg: rgba(124, 58, 237, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Manrope', sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 800px at 10% 20%, #e8f2f7 0%, transparent 60%),
    radial-gradient(1000px 700px at 90% 10%, #d8e9f3 0%, transparent 55%),
    linear-gradient(180deg, #f8fafc 0%, #e8eef3 60%, #f3f4f6 100%);
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(2, 26, 64, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3 {
  font-family: 'Cairo', sans-serif;
  margin: 0 0 12px;
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-family: 'Cairo', sans-serif;
  background: rgba(2, 26, 64, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.85em;
}

.shell {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.login-shell {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
  background: var(--card);
  border-radius: 18px;
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  animation: floatIn 0.6s ease;
}

.logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
}

.logo {
  width: 120px;
  height: auto;
}

.muted {
  color: var(--muted);
}

.alert {
  background: rgba(49, 122, 160, 0.12);
  border: 1px solid rgba(49, 122, 160, 0.25);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 16px 0;
  font-size: 0.9rem;
}

.alert-error {
  background: rgba(153, 27, 27, 0.1);
  border-color: rgba(153, 27, 27, 0.2);
  color: #991b1b;
}

.login-form label,
.filters label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--ink);
}

input,
select {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-family: inherit;
  font-size: 0.95rem;
}

input:focus,
select:focus {
  outline: 2px solid rgba(49, 122, 160, 0.3);
  border-color: var(--brand-600);
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: linear-gradient(120deg, var(--brand-600), var(--brand-500));
  color: #fff;
  box-shadow: 0 12px 24px rgba(49, 122, 160, 0.3);
}

.btn.ghost {
  background: rgba(2, 26, 64, 0.08);
  color: var(--brand-900);
}

.btn.toggle {
  background: rgba(2, 26, 64, 0.06);
}

.btn.toggle.active {
  background: rgba(49, 122, 160, 0.2);
  color: var(--brand-900);
}

.btn:hover {
  transform: translateY(-1px);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

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

.brand-logo {
  width: 64px;
  height: auto;
}

.brand-title {
  font-family: 'Cairo', sans-serif;
  font-size: 1.3rem;
  color: var(--brand-900);
}

.brand-sub {
  color: var(--muted);
  font-size: 0.9rem;
}

.menu {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.tile {
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  animation: fadeUp 0.6s ease;
}

.tile::after {
  content: '';
  position: absolute;
  inset: auto -20% -20% auto;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(49, 122, 160, 0.3), transparent 70%);
  opacity: 0.6;
}

.upload-panel {
  margin: 24px 0;
}

.upload-card {
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow);
}

.upload-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.upload-lists {
  display: grid;
  gap: 24px;
}

.upload-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.upload-table {
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  overflow: hidden;
}

.upload-row {
  display: grid;
  grid-template-columns: 140px 200px minmax(200px, 1fr) 220px 200px 150px;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  font-size: 0.92rem;
}

.upload-row:last-child {
  border-bottom: none;
}

.upload-header {
  background: rgba(2, 26, 64, 0.08);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.upload-row.is-error {
  background: rgba(185, 28, 28, 0.06);
}

.upload-row.is-ok {
  background: rgba(21, 128, 61, 0.05);
}

.upload-file {
  overflow-wrap: anywhere;
  font-size: 0.85rem;
}

.upload-status-cell .muted {
  font-size: 0.78rem;
}

.upload-body .upload-empty {
  padding: 14px 16px;
}

.tile.muted {
  opacity: 0.7;
}

.tile-action {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
  color: var(--brand-700);
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.filter-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar {
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.explorer {
  margin-top: 20px;
  display: grid;
  gap: 16px;
}

.explorer.grid {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.card {
  background: var(--card);
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
  position: relative;
  transition: border 0.2s ease, transform 0.2s ease;
  overflow: hidden;
}

.card.selected,
.row.selected {
  border-color: var(--brand-600);
  box-shadow: 0 12px 30px rgba(49, 122, 160, 0.35);
}

.card[class*="mark-"],
.row[class*="mark-"] {
  border-width: 2px;
}

.card.mark-slate,
.row.mark-slate {
  background: linear-gradient(0deg, var(--mark-slate-bg), var(--mark-slate-bg)), var(--card);
}

.card.mark-slate:not(.selected),
.row.mark-slate:not(.selected) {
  border-color: var(--mark-slate);
}

.card.mark-blue,
.row.mark-blue {
  background: linear-gradient(0deg, var(--mark-blue-bg), var(--mark-blue-bg)), var(--card);
}

.card.mark-blue:not(.selected),
.row.mark-blue:not(.selected) {
  border-color: var(--mark-blue);
}

.card.mark-green,
.row.mark-green {
  background: linear-gradient(0deg, var(--mark-green-bg), var(--mark-green-bg)), var(--card);
}

.card.mark-green:not(.selected),
.row.mark-green:not(.selected) {
  border-color: var(--mark-green);
}

.card.mark-amber,
.row.mark-amber {
  background: linear-gradient(0deg, var(--mark-amber-bg), var(--mark-amber-bg)), var(--card);
}

.card.mark-amber:not(.selected),
.row.mark-amber:not(.selected) {
  border-color: var(--mark-amber);
}

.card.mark-red,
.row.mark-red {
  background: linear-gradient(0deg, var(--mark-red-bg), var(--mark-red-bg)), var(--card);
}

.card.mark-red:not(.selected),
.row.mark-red:not(.selected) {
  border-color: var(--mark-red);
}

.card.mark-purple,
.row.mark-purple {
  background: linear-gradient(0deg, var(--mark-purple-bg), var(--mark-purple-bg)), var(--card);
}

.card.mark-purple:not(.selected),
.row.mark-purple:not(.selected) {
  border-color: var(--mark-purple);
}

.preview {
  width: 100%;
  height: 220px;
  border-radius: 12px;
  background: rgba(2, 26, 64, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.85rem;
}

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

.preview .text-snippet {
  padding: 12px;
  font-family: 'Cairo', sans-serif;
  font-size: 0.8rem;
  line-height: 1.35;
  white-space: pre-wrap;
}

.card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  min-width: 0;
}

.card-title,
.card-subtitle {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-title {
  font-weight: 600;
}

.row {
  display: grid;
  grid-template-columns: 200px 1.2fr 0.6fr 0.7fr 0.5fr 0.4fr;
  gap: 16px;
  align-items: center;
  padding: 14px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.row > div {
  min-width: 0;
}

.row-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row .muted {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row .preview {
  height: 140px;
}

.row-title {
  font-weight: 600;
}

.context-menu {
  position: fixed;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 6px;
  z-index: 20;
}

.context-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 2px;
}

.context-title {
  padding: 4px 10px 0;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.context-menu button {
  background: transparent;
  border: none;
  text-align: left;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
}

.context-menu button.color-option {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-swatch {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  border: 1px solid rgba(2, 26, 64, 0.25);
  background: transparent;
  flex: 0 0 12px;
}

.color-swatch[data-color="none"] {
  border-style: dashed;
}

.color-swatch[data-color="slate"] {
  background: var(--mark-slate);
  border-color: var(--mark-slate);
}

.color-swatch[data-color="blue"] {
  background: var(--mark-blue);
  border-color: var(--mark-blue);
}

.color-swatch[data-color="green"] {
  background: var(--mark-green);
  border-color: var(--mark-green);
}

.color-swatch[data-color="amber"] {
  background: var(--mark-amber);
  border-color: var(--mark-amber);
}

.color-swatch[data-color="red"] {
  background: var(--mark-red);
  border-color: var(--mark-red);
}

.color-swatch[data-color="purple"] {
  background: var(--mark-purple);
  border-color: var(--mark-purple);
}

.context-menu button:hover {
  background: rgba(49, 122, 160, 0.12);
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 26, 64, 0.35);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 30;
}

.modal-card {
  background: #fff;
  border-radius: 16px;
  width: min(520px, 90vw);
  padding: 20px;
  box-shadow: var(--shadow);
}

.modal-card-large {
  width: min(960px, 92vw);
  height: 90vh;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-actions {
  display: flex;
  gap: 10px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  margin-top: 0;
  padding-top: 12px;
  display: block;
  gap: 8px;
  font-size: 0.95rem;
  flex: 1;
  min-height: 0;
}

.upload-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.upload-status {
  margin-top: 12px;
  font-size: 0.9rem;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.upload-status.success {
  color: #15803d;
}

.upload-status.error {
  color: #b91c1c;
}

.preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 12px;
  background: #f8fafc;
}

.preview-image {
  width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 12px;
  background: #f8fafc;
}

.preview-text {
  width: 100%;
  height: 100%;
  overflow: auto;
  padding: 16px;
  border-radius: 12px;
  background: #f8fafc;
  white-space: pre-wrap;
  font-family: 'Cairo', sans-serif;
  font-size: 0.9rem;
}

.preview-loading {
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

@keyframes floatIn {
  from { transform: translateY(8px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

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

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .row {
    grid-template-columns: 1fr;
  }
  .upload-row {
    grid-template-columns: 1fr;
  }
  .upload-header {
    display: none;
  }
}

@media (max-width: 600px) {
  .filters {
    grid-template-columns: 1fr;
  }
  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }
}