* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #f5f5f5; color: #333; }

/* Header */
header { background: #1a73e8; color: #fff; padding: 0 1rem; }
nav { max-width: 900px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 50px; }
.logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.1rem; }
.nav-links a { color: rgba(255,255,255,0.8); text-decoration: none; margin-left: 1.2rem; font-size: 0.9rem; }
.nav-links a.active, .nav-links a:hover { color: #fff; border-bottom: 2px solid #fff; padding-bottom: 2px; }

main { max-width: 900px; margin: 1.5rem auto; padding: 0 1rem; }
h2 { margin-bottom: 1rem; }
h3 { margin: 1.5rem 0 0.5rem; }

/* Chat */
.chat-container { display: flex; flex-direction: column; height: calc(100vh - 120px); }
.messages { flex: 1; overflow-y: auto; padding: 1rem 0; }
.msg { margin-bottom: 1rem; padding: 0.8rem 1rem; border-radius: 8px; max-width: 80%; line-height: 1.5; white-space: pre-wrap; }
.msg.user { background: #1a73e8; color: #fff; margin-left: auto; }
.msg.assistant { background: #fff; border: 1px solid #ddd; }
.msg .sources { margin-top: 0.5rem; font-size: 0.85rem; color: #666; }
.msg .sources summary { cursor: pointer; color: #1a73e8; }
.chat-input { display: flex; gap: 0.5rem; padding: 0.5rem 0; }
.chat-input input { flex: 1; padding: 0.7rem; border: 1px solid #ddd; border-radius: 6px; font-size: 1rem; }
.chat-input button { padding: 0.7rem 1.5rem; background: #1a73e8; color: #fff; border: none; border-radius: 6px; cursor: pointer; font-size: 1rem; }
.chat-input button:disabled { background: #999; }

/* Upload */
.upload-container { background: #fff; padding: 1.5rem; border-radius: 8px; border: 1px solid #ddd; }
.drop-zone { border: 2px dashed #ccc; border-radius: 8px; padding: 2rem; text-align: center; cursor: pointer; margin-bottom: 1rem; transition: border-color 0.2s; }
.drop-zone.dragover { border-color: #1a73e8; background: #e8f0fe; }
.file-list { margin-bottom: 1rem; font-size: 0.9rem; }
.file-list div { padding: 0.3rem 0; }

.btn { padding: 0.6rem 1.2rem; background: #1a73e8; color: #fff; border: none; border-radius: 6px; cursor: pointer; margin: 0.5rem 0.5rem 0.5rem 0; }
.btn:disabled { background: #999; }
.btn-secondary { background: #666; }
.btn-danger { background: #d93025; padding: 0.3rem 0.6rem; font-size: 0.85rem; }

.results { margin-top: 1rem; }
.results div { padding: 0.4rem 0; font-size: 0.9rem; }
.results .ok { color: #188038; }
.results .skip { color: #e37400; }
.results .err { color: #d93025; }

td.indexing { color: #e37400; font-weight: 600; }
td.indexed { color: #188038; }
td.error { color: #d93025; }
td.not-indexed { color: #999; }

table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; }
th, td { padding: 0.5rem; text-align: left; border-bottom: 1px solid #eee; font-size: 0.9rem; }
th { background: #f9f9f9; font-weight: 600; }

/* Status */
.status-container { background: #fff; padding: 1.5rem; border-radius: 8px; border: 1px solid #ddd; }
.stats-grid { display: flex; gap: 1rem; margin-bottom: 1rem; }
.stat-card { flex: 1; background: #f0f6ff; padding: 1.2rem; border-radius: 8px; text-align: center; }
.stat-value { font-size: 2rem; font-weight: 700; color: #1a73e8; }
.stat-label { font-size: 0.85rem; color: #666; margin-top: 0.3rem; }
ul { list-style: none; }
ul li { padding: 0.3rem 0; font-size: 0.9rem; }
ul li::before { content: "- "; color: #999; }

/* Login */
.login-container { max-width: 360px; margin: 100px auto; padding: 2rem; background: #fff; border-radius: 8px; border: 1px solid #ddd; text-align: center; }
.login-container h1 { font-size: 1.5rem; margin-bottom: 1.5rem; color: #1a73e8; }
.login-container input { width: 100%; padding: 0.7rem; margin-bottom: 0.8rem; border: 1px solid #ddd; border-radius: 6px; font-size: 1rem; box-sizing: border-box; }
.login-container button { width: 100%; padding: 0.7rem; background: #1a73e8; color: #fff; border: none; border-radius: 6px; font-size: 1rem; cursor: pointer; }
.error-msg { color: #d93025; font-size: 0.9rem; margin-top: 0.5rem; }