:root {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --border-color: #334155;
  --accent-color: #6366f1;
  --accent-hover: #4f46e5;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, -apple-system, sans-serif; }
body { background-color: var(--bg-color); color: var(--text-main); min-height: 100vh; display: flex; flex-direction: column; align-items: center; }

header { width: 100%; background: #0b0f19; border-bottom: 1px solid var(--border-color); padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
header h1 { font-size: 1.25rem; font-weight: 700; color: var(--accent-color); }

nav { display: flex; gap: 0.5rem; }
.nav-btn { background: transparent; border: none; color: var(--text-muted); padding: 0.5rem 1rem; border-radius: 0.375rem; cursor: pointer; font-weight: 600; }
.nav-btn.active { background: var(--accent-color); color: white; }

main { width: 100%; max-width: 900px; padding: 2rem 1rem; }
.tab-content { display: none; }
.tab-content.active { display: block; }

.card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 0.75rem; padding: 1.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.1rem; margin-bottom: 1rem; color: var(--text-main); }

input, button, select { background: #0f172a; border: 1px solid var(--border-color); color: white; padding: 0.6rem 1rem; border-radius: 0.375rem; font-size: 0.9rem; }
input:focus, select:focus { outline: 1px solid var(--accent-color); }
button { background: var(--accent-color); border: none; cursor: pointer; font-weight: 600; }
button:hover { background: var(--accent-hover); }

/* Decision Engine */
.input-group { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.input-group input { flex: 1; }
.tag-container { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; min-height: 40px; }
.tag { background: #334155; padding: 0.3rem 0.7rem; border-radius: 1rem; font-size: 0.85rem; display: flex; align-items: center; gap: 0.4rem; }
.tag span { cursor: pointer; font-weight: bold; color: #ef4444; }
.picker-result { text-align: center; padding: 2rem; border: 2px dashed var(--border-color); border-radius: 0.5rem; margin-bottom: 1rem; }
.picker-result h3 { font-size: 1.8rem; color: var(--accent-color); margin-top: 0.5rem; }

/* Quote Archive */
.quote-card { border-left: 4px solid var(--accent-color); margin-bottom: 1rem; }
.quote-text { font-size: 1.1rem; font-style: italic; margin-bottom: 0.5rem; }
.quote-meta { font-size: 0.85rem; color: var(--text-muted); display: flex; justify-content: space-between; }
.search-bar { width: 100%; margin-bottom: 1.5rem; }