@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@300;400;500&display=swap');

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

:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --border: #e2e2de;
  --text: #1a1a1a;
  --text-muted: #8a8a82;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --radius: 4px;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* LAYOUT */
.layout {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

/* HEADER */
header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

.logo span {
  color: var(--accent);
}

nav a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 24px;
  transition: color 0.15s;
}

nav a:hover, nav a.active { color: var(--text); }

/* MAIN */
main {
  padding: 40px 32px;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
}

/* PAGE TITLE */
.page-title {
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* UPLOAD ZONE */
.upload-zone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--surface);
  margin-bottom: 40px;
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: #eff6ff;
}

.upload-zone input[type="file"] { display: none; }

.upload-icon {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  opacity: 0.3;
}

.upload-zone p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.upload-zone strong {
  font-weight: 500;
  color: var(--text);
}

.upload-zone .hint {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-top: 8px;
}

/* FORM INLINE */
.upload-form {
  margin-top: 20px;
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.upload-form input[type="text"] {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  width: 220px;
  transition: border-color 0.15s;
}

.upload-form input[type="text"]:focus { border-color: var(--accent); }

/* BUTTONS */
.btn {
  padding: 8px 16px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background 0.15s, opacity 0.15s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover { color: var(--text); border-color: var(--text); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: none;
  padding: 4px 8px;
  font-size: 12px;
}

.btn-danger:hover { background: #fef2f2; }

/* STATUS */
.status-bar {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 16px;
  min-height: 16px;
}

.status-bar.error { color: var(--danger); }
.status-bar.loading { color: var(--accent); }

/* FILE NAME SELECTED */
.file-selected {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  margin-top: 8px;
}

/* TABLE */
.table-header {
  display: grid;
  grid-template-columns: 1fr 100px 80px 80px;
  padding: 8px 16px;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.drawing-row {
  display: grid;
  grid-template-columns: 1fr 100px 80px 80px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  transition: background 0.1s;
}

.drawing-row:first-child { border-top: 1px solid var(--border); }
.drawing-row:hover { background: #fafafa; }

.drawing-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
}

.drawing-name:hover { text-decoration: underline; }

.drawing-size {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.drawing-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-error { background: #fee2e2; color: #991b1b; }
.badge-pending { background: #fef9c3; color: #854d0e; }

.empty-state {
  text-align: center;
  padding: 64px 0;
  color: var(--text-muted);
  font-size: 13px;
}

/* VIEWER PAGE */
.viewer-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.viewer-header h1 {
  font-size: 16px;
  font-weight: 500;
}

.viewer-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.svg-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.svg-container svg {
  max-width: 100%;
  height: auto;
}

.svg-container img {
  max-width: 100%;
  height: auto;
}

/* VIEWER TABS */
.viewer-tabs {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 14px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--text); border-bottom-color: var(--accent); }

.btn-copy {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.15s, border-color 0.15s;
}

.btn-copy:hover { color: var(--text); border-color: var(--text); }

/* XML CODE BLOCK */
.xml-container {
  background: #1e1e1e;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  min-height: 500px;
  max-height: 70vh;
}

.xml-container pre {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: #d4d4d4;
  padding: 24px;
  white-space: pre;
  tab-size: 2;
  counter-reset: line;
}

/* LOADING SPINNER */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
  vertical-align: middle;
  margin-right: 6px;
}

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

/* PROGRESS */
.progress-wrap {
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 16px;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.3s ease;
}