* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --green: #2e7d32; --green-dark: #1b5e20; --bg: #f5f7f4;
  --user: #2e7d32; --assistant: #fff; --border: #d8e0d6;
}
body { font-family: system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: #1c241b; height: 100vh; }
.hidden { display: none !important; }
.muted { color: #8a968a; font-size: .9rem; margin: .5rem 0; }

#auth-view { display: flex; align-items: center; justify-content: center; height: 100vh; }
.card { background: #fff; padding: 2.5rem; border-radius: 16px; box-shadow: 0 8px 30px rgba(0,0,0,.08); width: 340px; text-align: center; }
.card h1 { font-size: 2rem; margin-bottom: .25rem; }
.tagline { color: #6b776a; margin-bottom: 1.5rem; font-size: .9rem; }
.card input { width: 100%; padding: .75rem; margin-bottom: .75rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; }
.card button { width: 100%; padding: .75rem; border: none; border-radius: 8px; font-size: 1rem; cursor: pointer; margin-bottom: .5rem; }
#btn-login { background: var(--green); color: #fff; }
.secondary { background: #eef2ec; color: var(--green-dark); }
.error { color: #c62828; font-size: .85rem; min-height: 1.2em; }

#app-view { display: flex; height: 100vh; }
aside { width: 270px; background: #fff; border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 1rem; }
.nav { display: flex; gap: .25rem; margin-bottom: 1rem; }
.nav-btn { flex: 1; padding: .5rem; border: none; background: #eef2ec; border-radius: 8px; cursor: pointer; font-size: .85rem; }
.nav-btn.active { background: var(--green); color: #fff; }
.side-panel { flex: 1; overflow-y: auto; }
.new-chat { width: 100%; border: none; border-radius: 8px; padding: .7rem; cursor: pointer; font-size: .95rem; background: var(--green); color: #fff; margin-bottom: 1rem; }
.new-chat:hover { background: var(--green-dark); }
#session-list, #project-list { list-style: none; }
#session-list li, #project-list li { padding: .6rem .7rem; border-radius: 8px; cursor: pointer; font-size: .9rem; color: #44503f; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#session-list li:hover, #project-list li:hover { background: #eef2ec; }
#session-list li.active, #project-list li.active { background: #e0ebdd; font-weight: 600; }
.badge { font-size: .7rem; background: #cfe3ca; color: var(--green-dark); border-radius: 6px; padding: .1rem .4rem; margin-left: .3rem; }
.logout { background: none; border: 1px solid var(--border); border-radius: 8px; padding: .6rem; cursor: pointer; color: #6b776a; margin-top: .6rem; }
.quota { font-size: .78rem; color: #6b776a; border-top: 1px solid var(--border); padding-top: .6rem; margin-top: .6rem; display: flex; flex-direction: column; gap: .2rem; }
.quota strong { text-transform: capitalize; color: var(--green-dark); }

main { flex: 1; display: flex; flex-direction: column; }
#main-chats { flex: 1; display: flex; flex-direction: column; }
.chat-header { display: flex; justify-content: space-between; align-items: center; padding: .8rem 1.5rem; border-bottom: 1px solid var(--border); background: #fff; min-height: 3rem; font-weight: 600; }
.chat-actions button { border: 1px solid var(--border); background: #fff; border-radius: 8px; padding: .35rem .6rem; cursor: pointer; font-size: .8rem; margin-left: .4rem; }
#messages { flex: 1; overflow-y: auto; padding: 1.5rem; display: flex; flex-direction: column; gap: .8rem; }
.msg { max-width: 70%; padding: .7rem 1rem; border-radius: 14px; line-height: 1.45; white-space: pre-wrap; word-wrap: break-word; }
.msg.user { align-self: flex-end; background: var(--user); color: #fff; border-bottom-right-radius: 4px; }
.msg.assistant { align-self: flex-start; background: var(--assistant); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
#chat-form { display: flex; gap: .5rem; padding: 1rem 1.5rem; border-top: 1px solid var(--border); background: #fff; }
#chat-form input { flex: 1; padding: .75rem 1rem; border: 1px solid var(--border); border-radius: 10px; font-size: 1rem; }
#chat-form button { padding: .75rem 1.5rem; border: none; border-radius: 10px; cursor: pointer; background: var(--green); color: #fff; }
.reasoning-toggle { display: flex; align-items: center; gap: .25rem; font-size: 1.2rem; cursor: pointer; user-select: none; padding: 0 .3rem; }
.reasoning-toggle input { width: 1rem; height: 1rem; cursor: pointer; }
.empty { color: #9aa697; text-align: center; margin-top: 2rem; }
.incognito-btn { background: #455a64 !important; }
.incognito-btn:hover { background: #37474f !important; }
#incognito-banner { background: #37474f; color: #fff; padding: .55rem 1.5rem; font-size: .85rem; text-align: center; }
.research-bar { display: flex; gap: .5rem; margin-bottom: 1rem; }
.research-bar input { flex: 1; padding: .6rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; }
#research-report { white-space: pre-wrap; background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 1.2rem; margin-top: 1rem; line-height: 1.55; max-width: 800px; }
.usage-grid { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 1rem; }
.stat { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: .8rem 1.2rem; min-width: 110px; text-align: center; }
.stat-num { display: block; font-size: 1.6rem; font-weight: 700; color: var(--green-dark); }
.stat-lbl { font-size: .8rem; color: #6b776a; }
.plan-row { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: .6rem .9rem; margin-bottom: .5rem; }
.plan-row strong { text-transform: capitalize; min-width: 70px; }
.plan-row label { font-size: .85rem; color: #44503f; display: flex; flex-direction: column; }
.plan-row input { width: 90px; padding: .3rem; border: 1px solid var(--border); border-radius: 6px; }
.plan-row button { background: var(--green); color: #fff; border: none; border-radius: 6px; padding: .4rem .8rem; cursor: pointer; }
#admin-users select { padding: .3rem; border: 1px solid var(--border); border-radius: 6px; }

.panel-page { padding: 2rem; overflow-y: auto; }
.panel-page h2 { margin-bottom: 1rem; }
.panel-page h3 { margin: 1.2rem 0 .6rem; font-size: 1rem; }
.panel-page ul { list-style: none; }
.panel-page li { padding: .5rem .7rem; border: 1px solid var(--border); border-radius: 8px; margin-bottom: .4rem; background: #fff; display: flex; justify-content: space-between; align-items: center; font-size: .9rem; }
.panel-page button.small { padding: .5rem .9rem; border: none; border-radius: 8px; background: var(--green); color: #fff; cursor: pointer; margin-right: .5rem; margin-top: .5rem; font-size: .85rem; }
.panel-page button.danger { background: #c62828; }
.panel-page button#btn-create-org, .panel-page button#btn-invite { background: var(--green); color: #fff; border: none; border-radius: 8px; padding: .6rem 1rem; cursor: pointer; }
.row-action { border: 1px solid var(--border); background: #fff; border-radius: 6px; padding: .2rem .5rem; cursor: pointer; font-size: .8rem; }