/* PPI Pipeline — Design System */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
  --bg: #0f1114;
  --surface: #1a1d23;
  --surface-hover: #22262e;
  --border: #2a2f38;
  --text: #e2e8f0;
  --text-muted: #8891a0;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #eab308;
  --error: #ef4444;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 8px;
  --radius-sm: 4px;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  font-size: 14px;
}

/* ── Layout ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header h1 { font-size: 18px; font-weight: 600; letter-spacing: -0.02em; }
.header .version {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--surface-hover); border-color: var(--text-muted); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--large { padding: 12px 28px; font-size: 15px; }

/* ── Drop Zone ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.drop-zone:hover { border-color: var(--accent); background: rgba(59,130,246,0.04); }
.drop-zone.dragover { border-color: var(--accent); background: rgba(59,130,246,0.08); }
.drop-zone .drop-label { font-size: 16px; font-weight: 500; color: var(--text); }
.drop-zone .drop-hint { font-size: 13px; margin-top: 8px; font-family: var(--font-mono); }

/* ── File List ── */
.file-list { display: flex; flex-direction: column; gap: 6px; }
.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.file-item .file-name { font-family: var(--font-mono); flex: 1; }
.file-item .file-badge {
  font-size: 11px; font-weight: 600; padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: rgba(59,130,246,0.15);
  color: var(--accent);
}
.file-reclassify {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  padding: 2px 6px; border-radius: var(--radius-sm); font-size: 11px;
  font-family: var(--font-mono);
}
.btn-remove {
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  font-size: 16px; padding: 0 4px; line-height: 1;
}
.btn-remove:hover { color: var(--error); }

/* ── Status Pill ── */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-mono);
}
.status-pill::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-pill--success { color: var(--success); background: rgba(34,197,94,0.1); }
.status-pill--warning { color: var(--warning); background: rgba(234,179,8,0.1); }
.status-pill--error   { color: var(--error);   background: rgba(239,68,68,0.1); }

/* ── Processing Steps ── */
.step-list { display: flex; flex-direction: column; gap: 8px; }
.step {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; padding: 6px 0;
}
.step-icon { font-size: 16px; width: 20px; text-align: center; }
.step--done { color: var(--success); }
.step--done .step-icon { color: var(--success); }
.step--active { color: var(--text); }
.step--active .step-icon { color: var(--accent); animation: pulse 1.5s infinite; }
.step--error { color: var(--error); }
.step--pending { color: var(--text-muted); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ── Log Panel ── */
.log-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  max-height: 300px;
  overflow-y: auto;
  line-height: 1.7;
}
.log-entry { padding: 1px 0; }
.log-success { color: var(--success); }
.log-warning { color: var(--warning); }
.log-error   { color: var(--error); }
.log-info    { color: var(--text-muted); }

/* ── Toast ── */
.toast-container {
  position: fixed; top: 16px; right: 16px; z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  padding: 10px 16px; border-radius: var(--radius); font-size: 13px;
  font-weight: 500; animation: toastIn 0.25s ease-out; max-width: 360px;
}
.toast--success { background: rgba(34,197,94,0.15); color: var(--success); border: 1px solid rgba(34,197,94,0.3); }
.toast--warning { background: rgba(234,179,8,0.15); color: var(--warning); border: 1px solid rgba(234,179,8,0.3); }
.toast--error   { background: rgba(239,68,68,0.15); color: var(--error); border: 1px solid rgba(239,68,68,0.3); }
@keyframes toastIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }

/* ── Sections ── */
.controls { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.review-section { display: flex; flex-direction: column; gap: 12px; }
.hidden { display: none !important; }