:root {
  --violet-50: #f5f3ff;
  --violet-100: #ede9fe;
  --violet-200: #ddd6fe;
  --violet-300: #c4b5fd;
  --violet-400: #a78bfa;
  --violet-500: #8b5cf6;
  --violet-600: #7c3aed;
  --violet-700: #6d28d9;
  --violet-800: #5b21b6;
  --violet-900: #4c1d95;

  --bg: #f8f7ff;
  --panel: #ffffff;
  --panel-strong: var(--violet-50);
  --text-main: #1f1b2d;
  --text-soft: #5f5b78;
  --brand: #7c3aed;
  --brand-dark: #6d28d9;
  --secondary: #a78bfa;
  --line: var(--violet-200);
  --chip-bg: var(--violet-100);
  --chip-text: var(--violet-900);
  --shadow: 0 18px 40px rgba(76, 29, 149, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% 10%, rgba(124, 58, 237, 0.16), transparent 40%),
    radial-gradient(circle at 90% 0%, rgba(167, 139, 250, 0.2), transparent 45%),
    var(--bg);
  color: var(--text-main);
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.4;
}

.layout-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.hero {
  background: linear-gradient(135deg, #faf5ff 0%, #ede9fe 100%);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-eyebrow {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-dark);
  font-size: 0.74rem;
  font-weight: 700;
}

h1 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.7rem, 2.8vw, 2.8rem);
}

.hero-subtitle {
  margin: 0.45rem 0 0;
  color: var(--text-soft);
  max-width: 860px;
}

.stats-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem;
  box-shadow: var(--shadow);
}

.stat-label {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.8rem;
}

.stat-value {
  margin: 0.2rem 0 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.stat-small {
  font-size: 0.92rem;
  line-height: 1.35;
}

.panel {
  margin-top: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.workspace-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: minmax(260px, 330px) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.main-column .panel {
  margin-top: 0;
}

.main-column .panel + .panel {
  margin-top: 1rem;
}

.sidebar-panel {
  margin-top: 0;
  position: sticky;
  top: 0.9rem;
  max-height: calc(100vh - 2rem);
  overflow: auto;
}

.sidebar-header {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

.controls-header,
.results-header {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  justify-content: space-between;
}

h2 {
  margin: 0;
  font-size: 1.15rem;
}

.controls-grid,
.upload-grid {
  margin-top: 0.85rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.input-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.input-block span {
  color: var(--text-soft);
  font-size: 0.84rem;
  font-weight: 600;
}

.search-block {
  grid-column: 1 / -1;
}

.search-row {
  display: flex;
  gap: 0.6rem;
}

.search-row input {
  flex: 1;
}

input,
select,
button {
  font: inherit;
}

input[type="search"],
input[type="text"],
input[type="file"],
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: white;
  padding: 0.58rem 0.65rem;
  color: var(--text-main);
}

input:focus,
select:focus {
  outline: 2px solid var(--secondary);
  outline-offset: 1px;
}

.ghost-button,
.primary-button,
.download-link,
.edit-link,
.view-link {
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, filter 0.18s ease;
}

.ghost-button {
  background: var(--panel-strong);
  border-color: var(--violet-300);
  color: var(--text-main);
  padding: 0.48rem 0.65rem;
}

.primary-button,
.download-link {
  background: var(--brand);
  color: white;
  padding: 0.58rem 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-color: var(--brand-dark);
}

.edit-link {
  background: var(--secondary);
  color: #25164a;
  padding: 0.58rem 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-color: var(--violet-500);
}

.view-link {
  background: #ffffff;
  border-color: var(--violet-300);
  color: var(--violet-800);
  padding: 0.58rem 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ghost-button:hover,
.primary-button:hover,
.download-link:hover,
.edit-link:hover,
.view-link:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

.status-text {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.84rem;
}

.category-tree {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.4rem;
}

.tree-folder {
  border: 1px solid var(--violet-200);
  border-radius: 10px;
  background: #faf5ff;
  overflow: hidden;
}

.tree-folder > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.48rem 0.58rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: #312e4d;
}

.tree-folder > summary::-webkit-details-marker {
  display: none;
}

.tree-folder > summary::before {
  content: "▸";
  color: var(--violet-700);
  transition: transform 0.15s ease;
}

.tree-folder[open] > summary::before {
  transform: rotate(90deg);
}

.tree-count {
  margin-left: auto;
  color: #6d6692;
  font-size: 0.76rem;
  font-weight: 600;
}

.tree-content {
  border-top: 1px solid var(--violet-200);
  padding: 0.35rem;
  display: grid;
  gap: 0.4rem;
}

.tree-files {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.28rem;
}

.tree-file {
  display: flex;
  gap: 0.38rem;
  align-items: center;
  justify-content: space-between;
  border: 1px solid #e3dcff;
  border-radius: 8px;
  background: #ffffff;
  padding: 0.34rem 0.44rem;
}

.tree-file-name {
  margin: 0;
  font-size: 0.79rem;
  color: #2d2450;
  max-width: 100%;
  word-break: break-word;
}

.tree-file-link {
  color: var(--brand-dark);
  font-size: 0.76rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.tree-file-link:hover {
  text-decoration: underline;
}

.tree-empty {
  margin-top: 0.7rem;
  padding: 0.7rem;
  border: 1px dashed var(--violet-300);
  border-radius: 10px;
  color: var(--text-soft);
  background: var(--violet-50);
  font-size: 0.82rem;
}

.results-list {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.65rem;
}

.result-item {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.78rem;
  background: linear-gradient(125deg, #ffffff 0%, #f5f3ff 100%);
}

.result-name {
  margin: 0;
  font-size: 1rem;
}

.result-breadcrumb {
  margin: 0 0 0.2rem;
  color: var(--violet-800);
  font-size: 0.77rem;
  font-weight: 700;
  word-break: break-word;
}

.result-path {
  margin: 0.18rem 0 0;
  color: var(--text-soft);
  font-size: 0.81rem;
  word-break: break-word;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.4rem;
}

.meta-chip {
  background: var(--chip-bg);
  color: var(--chip-text);
  border-radius: 999px;
  padding: 0.18rem 0.48rem;
  font-size: 0.74rem;
  border: 1px solid var(--violet-300);
}

.result-actions {
  min-width: 110px;
  display: grid;
  gap: 0.4rem;
}

.empty-state {
  padding: 1rem;
  border: 1px dashed var(--violet-300);
  border-radius: 12px;
  background: var(--violet-50);
  color: var(--text-soft);
}

@media (max-width: 980px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workspace-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar-panel {
    position: static;
    max-height: none;
  }
}

@media (max-width: 760px) {
  .layout-shell {
    padding: 1rem 0.7rem 2rem;
  }

  .controls-grid,
  .upload-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .search-row {
    flex-direction: column;
  }

  .result-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .result-actions {
    width: 100%;
  }

  .download-link {
    width: 100%;
  }

  .edit-link {
    width: 100%;
  }

  .view-link {
    width: 100%;
  }
}