/* ============================================
   MarkItDown — Editorial Dark Aesthetic
   Palette: Near-black bg, warm cream text,
   acid-green accent, monospace soul
   ============================================ */

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

:root {
  --bg:         #0e0e0c;
  --bg-2:       #161614;
  --bg-3:       #1e1e1b;
  --border:     #2a2a27;
  --border-2:   #3a3a36;
  --text:       #e8e6df;
  --text-2:     #a09e97;
  --text-3:     #6b6963;
  --accent:     #b8f542;
  --accent-dim: #8ab832;
  --error:      #ff6b6b;
  --warning:    #ffcc44;

  --font-mono:  'DM Mono', 'Courier New', monospace;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;

  --radius:     4px;
  --radius-lg:  8px;
  --transition: 180ms ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Grain overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 128px 128px;
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(14,14,12,0.92);
  backdrop-filter: blur(12px);
  z-index: 50;
}

.logo {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.logo-bracket { color: var(--accent); }
.logo-text { color: var(--text); margin: 0 2px; }

nav { display: flex; gap: 28px; }
nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--text-3);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}
nav a:hover { color: var(--text); }

/* ── Hero ── */
.hero {
  padding: 80px 48px 60px;
  max-width: 900px;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(52px, 8vw, 88px);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 24px;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

/* ── Upload ── */
.upload-section {
  padding: 0 48px 60px;
  max-width: 900px;
}

.upload-zone {
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  background: var(--bg-2);
  transition: border-color var(--transition), background var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(184,245,66,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent);
  background: var(--bg-3);
}
.upload-zone.drag-over::before {
  background: radial-gradient(ellipse at 50% 0%, rgba(184,245,66,0.10) 0%, transparent 70%);
}

.upload-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 32px;
  gap: 10px;
  text-align: center;
}

.upload-icon {
  color: var(--text-3);
  margin-bottom: 8px;
  transition: color var(--transition), transform var(--transition);
}
.upload-zone:hover .upload-icon { color: var(--accent); transform: translateY(-4px); }

.upload-hint {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
}
.upload-sub {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}

.upload-btn {
  display: inline-block;
  padding: 9px 24px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  margin-top: 4px;
}
.upload-btn:hover { opacity: 0.88; transform: translateY(-1px); }

.upload-limit {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  margin-top: 4px;
}

/* ── File Queue ── */
.file-queue {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-item {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
  animation: slideIn 0.2s ease;
}

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

.file-item.done   { border-color: rgba(184,245,66,0.3); }
.file-item.error  { border-color: rgba(255,107,107,0.3); }

.file-ext {
  width: 40px;
  height: 40px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.file-info { min-width: 0; }
.file-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}
.file-size {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
}

.file-status {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.status-badge.pending    { background: rgba(160,158,151,0.12); color: var(--text-3); }
.status-badge.uploading  { background: rgba(184,245,66,0.10); color: var(--accent-dim); }
.status-badge.processing { background: rgba(255,204,68,0.12); color: var(--warning); }
.status-badge.done       { background: rgba(184,245,66,0.14); color: var(--accent); }
.status-badge.error      { background: rgba(255,107,107,0.12); color: var(--error); }

.progress-bar-wrap {
  width: 100%;
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  margin-top: 6px;
  overflow: hidden;
  display: none;
}
.progress-bar-wrap.visible { display: block; }
.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 1px;
  transition: width 0.3s ease;
  width: 0%;
}
.progress-bar.indeterminate {
  width: 40%;
  animation: indeterminate 1.4s ease-in-out infinite;
}
@keyframes indeterminate {
  0%   { transform: translateX(-150%); }
  100% { transform: translateX(350%); }
}

.view-result-btn {
  background: none;
  border: 1px solid var(--border-2);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  white-space: nowrap;
}
.view-result-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── Result Section ── */
.result-section {
  padding: 0 48px 80px;
  max-width: 1200px;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.result-tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3px;
}

.tab {
  background: none;
  border: none;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 18px;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.tab.active {
  background: var(--bg-3);
  color: var(--text);
}

.result-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.04em;
}

.copy-btn {
  background: none;
  border: 1px solid var(--border-2);
  color: var(--text-2);
}
.copy-btn:hover { border-color: var(--text-2); color: var(--text); }
.copy-btn.copied { border-color: var(--accent); color: var(--accent); }

.download-btn {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: var(--bg);
}
.download-btn:hover { opacity: 0.88; }

.reset-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-3);
}
.reset-btn:hover { border-color: var(--border-2); color: var(--text-2); }

.result-body {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-2);
  overflow: hidden;
  min-height: 400px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Markdown Preview */
.markdown-preview {
  padding: 40px 48px;
  max-width: 800px;
  color: var(--text);
  line-height: 1.75;
}
.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--text);
  margin: 1.6em 0 0.6em;
  line-height: 1.2;
}
.markdown-preview h1 { font-size: 2em; }
.markdown-preview h2 { font-size: 1.5em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.markdown-preview h3 { font-size: 1.2em; }
.markdown-preview p  { margin: 0.8em 0; }
.markdown-preview a  { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.markdown-preview code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--accent-dim);
}
.markdown-preview pre {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 1.2em 0;
}
.markdown-preview pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  color: var(--text-2);
}
.markdown-preview blockquote {
  border-left: 3px solid var(--accent);
  margin: 1em 0;
  padding: 0 0 0 20px;
  color: var(--text-2);
  font-style: italic;
}
.markdown-preview table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
  font-size: 14px;
}
.markdown-preview th,
.markdown-preview td {
  border: 1px solid var(--border);
  padding: 8px 14px;
  text-align: left;
}
.markdown-preview th {
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.markdown-preview tr:hover td { background: rgba(255,255,255,0.015); }
.markdown-preview ul,
.markdown-preview ol { padding-left: 1.5em; margin: 0.6em 0; }
.markdown-preview li { margin: 0.3em 0; }
.markdown-preview hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }
.markdown-preview img { max-width: 100%; border-radius: var(--radius-lg); }

/* Raw Markdown */
.raw-content {
  padding: 0;
}
.raw-content pre {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
  padding: 40px 48px;
  white-space: pre-wrap;
  word-break: break-word;
  overflow: auto;
  max-height: 70vh;
}

/* ── Formats Section ── */
.formats-section {
  padding: 60px 48px;
  border-top: 1px solid var(--border);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 32px;
}

.formats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}

.format-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
}
.format-card:hover { border-color: var(--border-2); }

.format-ext {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.format-name {
  font-size: 12px;
  color: var(--text-3);
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 48px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  text-align: center;
}
footer p {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
}
footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--accent); }
.footer-sub { opacity: 0.6; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  z-index: 200;
  animation: toastIn 0.25s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.toast.success { border-color: rgba(184,245,66,0.4); color: var(--accent); }
.toast.error   { border-color: rgba(255,107,107,0.4); color: var(--error); }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  header { padding: 16px 20px; }
  nav { display: none; }
  .hero { padding: 48px 20px 40px; }
  .upload-section,
  .result-section,
  .formats-section { padding-left: 20px; padding-right: 20px; }
  .hero-title { font-size: 44px; }
  .markdown-preview,
  .raw-content pre { padding: 24px 20px; }
  .result-header { flex-direction: column; align-items: flex-start; }
  footer { padding: 24px 20px; }
}

[hidden] { display: none !important; }

/* ── Result Header (v2 additions) ── */
.result-header {
  flex-wrap: wrap;
  gap: 12px;
}
.result-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.result-filename {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.word-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  white-space: nowrap;
  padding-right: 4px;
}

/* Delete / download-all buttons */
.delete-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-3);
  padding: 8px 10px;
}
.delete-btn:hover {
  border-color: var(--error);
  color: var(--error);
}
.download-all-btn {
  background: none;
  border: 1px solid var(--border-2);
  color: var(--text-2);
}
.download-all-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* File item: active state (selected in queue) */
.file-item.active {
  border-color: rgba(184,245,66,0.45);
  background: var(--bg-3);
}
.file-item.done { cursor: pointer; }
.file-item.done:hover { border-color: rgba(184,245,66,0.25); }

/* View hint inside file-meta */
.view-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-dim);
  margin-left: 8px;
  letter-spacing: 0.04em;
}