:root {
  --paper: #efe6d0;
  --paper-soft: rgba(255, 251, 244, 0.76);
  --ink: #1f2b33;
  --ink-soft: #5d6a73;
  --border: rgba(31, 43, 51, 0.12);
  --panel: rgba(255, 251, 244, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --accent: #bc6a32;
  --accent-strong: #8a4518;
  --signal: #0c7a78;
  --shadow: 0 18px 40px rgba(40, 27, 17, 0.14);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --space-1: 0.375rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --top-offset: max(1rem, env(safe-area-inset-top));
  --bottom-offset: max(1rem, env(safe-area-inset-bottom));
  --font-display: "Fraunces", serif;
  --font-body: "Archivo", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

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

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(12, 122, 120, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(188, 106, 50, 0.12), transparent 25%),
    linear-gradient(180deg, #f7f1e4 0%, #ece0c6 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(31, 43, 51, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 43, 51, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 92%);
}

img,
video,
iframe {
  max-width: 100%;
}

a {
  color: inherit;
}

button,
input,
textarea,
select {
  font: inherit;
}

.skip-link {
  position: fixed;
  top: -3rem;
  left: 1rem;
  z-index: 50;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  position: relative;
  width: min(1600px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: var(--top-offset) 0 var(--bottom-offset);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar,
.control-panel,
.browser-panel,
.viewer-panel {
  position: relative;
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-5);
  padding: 1rem 1.2rem;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  border-top: 0;
}

.brand-lockup,
.header-search,
.topbar-actions {
  min-width: 0;
}

.brand-lockup h1,
.dashboard-hero h2,
.empty-state h3,
.viewer-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-lockup h1 {
  font-size: clamp(1.85rem, 4vw, 3.25rem);
  line-height: 0.95;
}

.subtitle,
.hero-copy,
.search-hint,
.viewer-meta,
.folder-summary,
.browser-file-meta,
.viewer-path {
  color: var(--ink-soft);
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
}

.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

.header-search {
  flex: 1 1 28rem;
  display: grid;
  gap: 0.45rem;
  max-width: 34rem;
  align-self: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.button:hover:not(:disabled):not(.disabled),
.button:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(31, 43, 51, 0.28);
  box-shadow: 0 12px 24px rgba(31, 43, 51, 0.08);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff;
  border-color: transparent;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.55);
}

.button:disabled,
.button.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  margin-top: 1rem;
}

.control-panel {
  position: fixed;
  z-index: 35;
  inset: 0 auto 0 0;
  width: min(30rem, calc(100vw - 1rem));
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1.15rem;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  transform: translateX(-105%);
  transition: transform 180ms ease;
}

body.controls-open .control-panel {
  transform: translateX(0);
}

.dashboard-hero {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.4rem 0.5rem 0;
}

.dashboard-hero h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 0.98;
  max-width: 16ch;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 100%;
  min-height: 48px;
  padding: 0 1rem;
  border: 1px solid rgba(31, 43, 51, 0.16);
  border-radius: 18px;
  background: #fffdfa;
}

.search-box input:focus-visible,
.browser-file:focus-visible,
.filter-chip:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.85rem;
  grid-column: 1 / -1;
}

.stat-card {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(255, 249, 240, 0.85));
  border: 1px solid rgba(31, 43, 51, 0.08);
}

.stat-label {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
}

.stat-value {
  margin: 0;
  font-size: clamp(1.3rem, 2vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.recent-panel {
  display: grid;
  gap: 0.85rem;
}

.section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.section-heading h3 {
  margin: 0;
  font-size: 1rem;
}

.section-heading p {
  margin: 0;
  color: var(--ink-soft);
}

.recent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.recent-card {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 43, 51, 0.08);
  background: rgba(255, 255, 255, 0.75);
  text-align: left;
}

.recent-card h4 {
  margin: 0;
  font-size: 1rem;
}

.recent-card p {
  margin: 0;
}

.browser-panel,
.viewer-panel {
  border-radius: var(--radius-lg);
}

.browser-panel {
  position: sticky;
  top: 1rem;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
  height: calc(100vh - 2rem);
  max-height: calc(100vh - 2rem);
  overflow: hidden;
}

.panel-header,
.viewer-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-content: start;
}

.filter-chip {
  min-height: 40px;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(31, 43, 51, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  cursor: pointer;
}

.filter-chip.active {
  border-color: transparent;
  background: var(--ink);
  color: #fff;
}

.browser-groups {
  display: grid;
  gap: 1rem;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding-right: 0.25rem;
}

.browser-group {
  display: grid;
  gap: 0.55rem;
}

.browser-group-header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
}

.browser-group-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--signal);
}

.browser-group-count {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.browser-files {
  display: grid;
  gap: 0.55rem;
}

.browser-file {
  display: grid;
  gap: 0.35rem;
  width: 100%;
  padding: 0.9rem;
  border: 1px solid rgba(31, 43, 51, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  text-align: left;
  cursor: pointer;
}

.browser-file.active {
  background: linear-gradient(135deg, rgba(188, 106, 50, 0.14), rgba(12, 122, 120, 0.1));
  border-color: rgba(138, 69, 24, 0.28);
}

.browser-file-topline {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: center;
}

.file-tag,
.viewer-badge {
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  background: rgba(31, 43, 51, 0.08);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.browser-file-name {
  margin: 0;
  font-size: 0.96rem;
  font-weight: 600;
}

.browser-file-meta {
  margin: 0;
  font-size: 0.85rem;
}

.viewer-panel {
  min-height: calc(100vh - 2rem);
  padding: 1rem;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 1rem;
}

.viewer-heading h2 {
  font-size: clamp(1.4rem, 2vw, 2.3rem);
}

.viewer-path {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.viewer-meta {
  margin: 0.35rem 0 0;
  max-width: 70ch;
}

.viewer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: flex-end;
}

.viewer-stage {
  position: relative;
  min-height: clamp(30rem, 72vh, 80rem);
  border: 1px solid rgba(31, 43, 51, 0.08);
  border-radius: 22px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 249, 240, 0.88)),
    linear-gradient(90deg, rgba(31, 43, 51, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(31, 43, 51, 0.04) 1px, transparent 1px);
  background-size: auto, 24px 24px, 24px 24px;
}

.empty-state,
.fallback-state,
.loading-state {
  display: grid;
  place-items: center;
  gap: 0.75rem;
  min-height: inherit;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  text-align: center;
}

.empty-state h3,
.fallback-state h3,
.loading-state h3 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.viewer-frame,
.viewer-media,
.viewer-image {
  width: 100%;
  height: min(82vh, 1100px);
  border: 0;
  display: block;
  background: #fff;
}

.viewer-image {
  height: auto;
  max-height: calc(100vh - 15rem);
  object-fit: contain;
}

.code-block,
.markdown-body,
.table-preview {
  width: min(100%, 1040px);
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 2rem);
}

.code-block {
  min-height: inherit;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
}

.markdown-body {
  line-height: 1.7;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body pre,
.markdown-body code {
  font-family: var(--font-mono);
}

.markdown-body pre {
  padding: 1rem;
  border-radius: 16px;
  overflow: auto;
  background: rgba(31, 43, 51, 0.06);
}

.markdown-body table,
.table-preview table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.8);
}

.markdown-body th,
.markdown-body td,
.table-preview th,
.table-preview td {
  padding: 0.75rem;
  border: 1px solid rgba(31, 43, 51, 0.12);
  text-align: left;
  vertical-align: top;
}

.table-preview {
  overflow: auto;
}

.drawer-scrim {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(31, 43, 51, 0.32);
}

.hamburger {
  display: inline-grid;
  gap: 3px;
  margin-right: 0.45rem;
}

.hamburger span {
  width: 14px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.mobile-only {
  display: none;
}

body.browser-open .drawer-scrim,
body.controls-open .drawer-scrim {
  display: block;
}

body.immersive-mode .control-panel,
body.immersive-mode .browser-panel,
body.immersive-mode .topbar {
  display: none;
}

body.immersive-mode .shell {
  width: 100%;
  padding: 0;
}

body.immersive-mode .layout {
  display: block;
  margin: 0;
}

body.immersive-mode .viewer-panel {
  min-height: 100vh;
  border-radius: 0;
  border: 0;
  padding: 0.9rem;
}

body.immersive-mode .viewer-stage {
  min-height: calc(100vh - 7.5rem);
  border-radius: 18px;
}

@media (max-width: 1080px) {
  .topbar {
    flex-wrap: wrap;
  }

  .header-search {
    max-width: none;
    order: 3;
    width: 100%;
  }
}

@media (max-width: 960px) {
  .shell {
    width: min(100%, calc(100% - 1rem));
  }

  .topbar {
    flex-direction: column;
  }

  .header-search {
    order: 2;
    flex: none;
    width: 100%;
    max-width: none;
  }

  .topbar-actions {
    order: 3;
    width: 100%;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .control-panel {
    width: min(92vw, 30rem);
  }

  .browser-panel {
    position: fixed;
    z-index: 30;
    inset: auto 0 0 0;
    width: min(92vw, 430px);
    max-height: min(88vh, 720px);
    border-radius: 24px 24px 0 0;
    transform: translateY(105%);
    transition: transform 180ms ease;
  }

  body.browser-open .browser-panel {
    transform: translateY(0);
  }

  .mobile-only {
    display: inline-flex;
  }

  .viewer-panel {
    order: 1;
  }

  .browser-panel {
    order: 2;
  }

  .viewer-panel {
    min-height: auto;
  }

  .viewer-stage,
  .viewer-frame,
  .viewer-media {
    min-height: 65vh;
    height: 72vh;
  }

  .viewer-image {
    max-height: 72vh;
  }
}

@media (max-width: 640px) {
  .shell {
    width: calc(100% - 0.75rem);
  }

  .topbar,
  .viewer-panel {
    border-radius: 20px;
  }

  .topbar,
  .viewer-panel,
  .browser-panel,
  .control-panel {
    padding: 0.9rem;
  }

  .topbar-actions {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .topbar-actions > * {
    min-width: 0;
    width: 100%;
  }

  .stat-grid,
  .recent-grid {
    grid-template-columns: 1fr;
  }

  .panel-header,
  .viewer-toolbar,
  .browser-group-header {
    flex-direction: column;
  }

  .viewer-badges {
    justify-content: flex-start;
  }
}