* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: #212121;
  color: #ececec;
}

/* --- auth page ------------------------------------------------------------ */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-card {
  width: min(400px, 100%);
  background: #171717;
  border: 1px solid #2c2c2c;
  border-radius: 16px;
  padding: 28px;
}
.auth-card h1 { font-size: 22px; margin-bottom: 4px; }
.auth-card .sub { color: #9a9a9a; font-size: 13px; margin-bottom: 20px; }
.tabs { display: flex; gap: 4px; margin-bottom: 18px; }
.tab {
  flex: 1; border: none; background: #232323; color: #9a9a9a;
  font: inherit; font-size: 14px; padding: 9px; border-radius: 9px; cursor: pointer;
}
.tab.active { background: #2f2f2f; color: #fff; }
form { display: flex; flex-direction: column; gap: 12px; }
label { font-size: 13px; color: #bdbdbd; display: flex; flex-direction: column; gap: 5px; }
input {
  border: 1px solid #3a3a3a; border-radius: 9px; background: #101010;
  color: #ececec; font: inherit; font-size: 14px; padding: 10px 12px; outline: none;
}
input:focus { border-color: #4f8cff; }
.btn {
  border: none; border-radius: 9px; background: #4f8cff; color: #fff;
  font: inherit; font-size: 14px; font-weight: 600; padding: 11px; cursor: pointer;
}
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-secondary { background: #2f2f2f; color: #ececec; }
.msg-error {
  font-size: 13px; color: #f28b82; background: rgba(242,139,130,.12);
  border-radius: 9px; padding: 10px 12px; display: none;
}
.msg-error.show { display: block; }
.notice { font-size: 12px; color: #7a7a7a; margin-top: 14px; line-height: 1.5; }

/* --- app shell ------------------------------------------------------------ */
#app { display: flex; height: 100vh; }
#sidebar {
  width: 260px; min-width: 260px; background: #171717;
  display: flex; flex-direction: column; padding: 10px; gap: 8px;
}
.brand { font-weight: 700; padding: 8px 10px; font-size: 15px; }
#new-chat {
  border: 1px solid #3a3a3a; border-radius: 10px; background: transparent;
  color: #ececec; font: inherit; font-size: 14px; padding: 10px; text-align: left; cursor: pointer;
}
#new-chat:hover { background: #212121; }
#conv-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.conv {
  display: flex; align-items: center; gap: 6px; padding: 9px 10px;
  border-radius: 9px; cursor: pointer; font-size: 14px; color: #d6d6d6;
}
.conv:hover { background: #212121; }
.conv.active { background: #2f2f2f; color: #fff; }
.conv .t { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv .del { display: none; border: none; background: transparent; color: #9a9a9a; cursor: pointer; }
.conv:hover .del { display: block; }
.side-foot { border-top: 1px solid #2c2c2c; padding-top: 8px; display: flex; flex-direction: column; gap: 4px; }
.side-foot .who { font-size: 12px; color: #9a9a9a; padding: 4px 10px; }
.side-btn {
  border: none; background: transparent; color: #d6d6d6; font: inherit; font-size: 13px;
  padding: 8px 10px; text-align: left; border-radius: 8px; cursor: pointer;
}
.side-btn:hover { background: #212121; }

#main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.messages { flex: 1; overflow-y: auto; padding: 24px 16px; display: flex; flex-direction: column; gap: 6px; }
.empty { margin: auto; color: #6f6f6f; font-size: 20px; }
.row { width: 100%; max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; padding: 4px 8px; }
.row.user { align-items: flex-end; }
.row.assistant, .row.error { align-items: flex-start; }
.bubble { font-size: 15px; line-height: 1.55; white-space: pre-wrap; word-break: break-word; }
.row.user .bubble { background: #2f2f2f; border-radius: 18px 18px 6px 18px; padding: 10px 16px; max-width: 80%; }
.row.assistant .bubble { padding: 6px 2px; }
.row.error .bubble { align-self: center; background: rgba(242,139,130,.12); color: #f28b82; border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.row.typing .bubble { color: #9a9a9a; }

.composer-wrap { padding: 12px 16px 20px; }
.composer {
  max-width: 760px; margin: 0 auto; display: flex; align-items: flex-end; gap: 8px;
  background: #2f2f2f; border: 1px solid #3a3a3a; border-radius: 24px; padding: 8px 8px 8px 18px;
}
#input { flex: 1; border: none; background: transparent; color: #ececec; font: inherit; font-size: 15px; resize: none; outline: none; max-height: 200px; padding: 6px 0; }
#send { border: none; border-radius: 50%; width: 36px; height: 36px; background: #ececec; color: #212121; font-size: 16px; cursor: pointer; flex-shrink: 0; }
#send:disabled { opacity: .3; cursor: default; }

/* --- gate screens (pending / suspended) ----------------------------------- */
.gate { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; text-align: center; }
.gate-card { max-width: 480px; background: #171717; border: 1px solid #2c2c2c; border-radius: 16px; padding: 32px; }
.gate-card h2 { font-size: 20px; margin-bottom: 12px; }
.gate-card p { color: #cfcfcf; font-size: 15px; line-height: 1.6; }
.gate-card.suspended { border-color: rgba(242,139,130,.5); }
.gate-card .logout { margin-top: 20px; }

/* --- admin ---------------------------------------------------------------- */
.admin-wrap { max-width: 1100px; margin: 0 auto; padding: 24px 20px; }
.admin-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.admin-head h1 { font-size: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid #2c2c2c; }
th { color: #9a9a9a; font-weight: 600; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; }
.pill.pending { background: rgba(240,200,100,.15); color: #f0c864; }
.pill.approved { background: rgba(110,231,160,.15); color: #6ee7a0; }
.pill.suspended { background: rgba(242,139,130,.15); color: #f28b82; }
.act { display: flex; gap: 6px; flex-wrap: wrap; }
.mini {
  border: none; border-radius: 7px; font: inherit; font-size: 12px;
  padding: 5px 10px; cursor: pointer; background: #2f2f2f; color: #ececec;
}
.mini.green { background: #1f6f43; }
.mini.red { background: #7a2e2e; }
.mini.blue { background: #2b5797; }
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: none; align-items: center; justify-content: center; padding: 20px; z-index: 20; }
.overlay.show { display: flex; }
.modal { width: min(720px, 100%); max-height: 86vh; overflow-y: auto; background: #1c1c1c; border: 1px solid #333; border-radius: 14px; padding: 20px; }
.modal h3 { margin-bottom: 12px; }
.log-row { padding: 8px 0; border-bottom: 1px solid #262626; }
.log-row .role { font-size: 11px; color: #8a8a8a; text-transform: uppercase; }
.log-row .txt { white-space: pre-wrap; word-break: break-word; font-size: 14px; margin-top: 2px; }
.topbar { display: flex; gap: 10px; align-items: center; }

#settings-form { display: flex; flex-direction: column; gap: 12px; margin: 10px 0; }
#settings-form label { font-size: 13px; color: #bdbdbd; }
#settings-form input { margin-top: 5px; }
.settings-note { font-size: 12px; color: #9a9a9a; line-height: 1.5; }
.settings-error { font-size: 12px; color: #f28b82; background: rgba(242,139,130,.1); border-radius: 8px; padding: 8px 10px; white-space: pre-wrap; }
.settings-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 12px; }