* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; background: #1a1a2e; color: #e0e0e0; height: 100vh; }

/* Login */
.login-wrap { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box { background: #16213e; padding: 2rem; border-radius: 12px; width: 340px; }
.login-box h1 { margin-bottom: 1.5rem; font-size: 1.4rem; color: #e94560; }
.login-box input { width: 100%; padding: .7rem 1rem; margin-bottom: 1rem; border-radius: 8px; border: 1px solid #0f3460; background: #0f3460; color: #fff; font-size: 1rem; }
.login-box button { width: 100%; padding: .8rem; background: #e94560; color: #fff; border: none; border-radius: 8px; font-size: 1rem; cursor: pointer; }
.login-box .error { color: #e94560; font-size: .85rem; margin-bottom: .5rem; }

/* Chat */
.chat-wrap { display: flex; flex-direction: column; height: 100vh; max-width: 860px; margin: 0 auto; padding: 1rem; }
.chat-header { display: flex; justify-content: space-between; align-items: center; padding: .5rem 0 1rem; border-bottom: 1px solid #0f3460; }
.chat-header h2 { color: #e94560; }
.chat-header .role-badge { background: #0f3460; padding: .2rem .7rem; border-radius: 20px; font-size: .8rem; }
.messages { flex: 1; overflow-y: auto; padding: 1rem 0; display: flex; flex-direction: column; gap: .8rem; }
.msg { max-width: 75%; padding: .8rem 1rem; border-radius: 12px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; }
.msg.user { background: #0f3460; align-self: flex-end; }
.msg.assistant { background: #16213e; align-self: flex-start; border: 1px solid #0f3460; }
.input-row { display: flex; gap: .5rem; padding-top: 1rem; border-top: 1px solid #0f3460; }
.input-row textarea { flex: 1; padding: .8rem; border-radius: 8px; border: 1px solid #0f3460; background: #0f3460; color: #fff; font-size: 1rem; resize: none; height: 56px; }
.input-row button { padding: .8rem 1.4rem; background: #e94560; color: #fff; border: none; border-radius: 8px; cursor: pointer; font-size: 1rem; }
.input-row button:disabled { opacity: .5; cursor: default; }

/* Admin */
.admin-wrap { max-width: 1000px; margin: 0 auto; padding: 2rem; }
.admin-wrap h1 { color: #e94560; margin-bottom: 1.5rem; }
.stats-row { display: flex; gap: 1rem; margin-bottom: 2rem; }
.stat-card { flex: 1; background: #16213e; padding: 1.2rem; border-radius: 10px; text-align: center; }
.stat-card .num { font-size: 2rem; font-weight: bold; color: #e94560; }
.stat-card .label { font-size: .85rem; color: #aaa; margin-top: .3rem; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: .6rem .8rem; text-align: left; border-bottom: 1px solid #0f3460; }
th { background: #16213e; color: #aaa; }