/* Neobrutalism theme, tokens from neobrutalism.dev */
:root {
  --bg: #dcebfe;
  --panel: #ffffff;
  --main: #5294ff;
  --text: #000000;
  --muted: #3f3f46;
  --border: #000000;
  --success: #05e17a;
  --danger: #ff4d50;
  --warn: #facc00;
  --violet: #7a83ff;
  --code-bg: #f4f4f5;
  --radius: 5px;
  --bw: 2px;
  --shadow: 4px 4px 0 0 var(--border);
  --mono: "Space Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 14px;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(to right, #80808033 1px, transparent 1px),
    linear-gradient(to bottom, #80808033 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Shared box + press behaviour */
.tool-btn, #chat-send, .badge, #lab-nav a, .msg, #chat-input, .modal-card, .toast, .x {
  border: var(--bw) solid var(--border);
  border-radius: var(--radius);
}

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; padding: 0 20px;
  background: var(--main); border-bottom: var(--bw) solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { font-weight: 800; font-size: 20px; letter-spacing: -.3px; display: flex; align-items: center; gap: 8px; }
.brand-mark {
  background: var(--warn); border: var(--bw) solid var(--border); border-radius: var(--radius);
  box-shadow: 2px 2px 0 0 var(--border); padding: 0 6px; font-size: 16px; line-height: 26px;
}
.topbar-right { display: flex; gap: 10px; align-items: center; }
.badge {
  font-size: 12px; font-weight: 700; padding: 4px 10px;
  background: var(--panel); box-shadow: 2px 2px 0 0 var(--border);
}
.badge.muted { background: var(--success); }

/* Layout */
.layout { display: flex; height: calc(100vh - 60px); }
.sidebar {
  width: 250px; flex: 0 0 250px; background: var(--panel);
  border-right: var(--bw) solid var(--border); padding: 16px 14px; overflow-y: auto;
}
.sidebar-label {
  font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em;
  padding: 0 2px 12px;
}
#lab-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; margin-bottom: 10px;
  background: var(--panel); box-shadow: var(--shadow);
  color: var(--text); text-decoration: none; font-size: 13.5px; font-weight: 600; cursor: pointer;
  transition: transform .1s, box-shadow .1s;
}
#lab-nav a:hover { transform: translate(4px, 4px); box-shadow: none; }
#lab-nav a.active { background: var(--main); }
#lab-nav a .dot {
  width: 12px; height: 12px; border-radius: 50%; flex: 0 0 12px;
  background: var(--panel); border: var(--bw) solid var(--border);
}
#lab-nav a.solved .dot { background: var(--success); }
#lab-nav a .num {
  font-weight: 800; font-variant-numeric: tabular-nums; min-width: 14px;
}

/* Main */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.lab-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
  padding: 18px 22px; border-bottom: var(--bw) solid var(--border); background: var(--panel);
}
.lab-header h1 { font-size: 24px; font-weight: 800; margin: 0 0 4px; letter-spacing: -.4px; }
.tagline { margin: 0; color: var(--muted); font-size: 14px; max-width: 640px; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; }
.tool-btn {
  background: var(--panel); color: var(--text); box-shadow: var(--shadow);
  padding: 8px 14px; font-size: 13px; font-weight: 700; font-family: var(--sans); cursor: pointer;
  transition: transform .1s, box-shadow .1s;
}
.tool-btn:hover:not(:disabled), #chat-send:hover:not(:disabled) { transform: translate(4px, 4px); box-shadow: none; }
.tool-btn:disabled { opacity: .5; cursor: not-allowed; }
.tool-btn.primary { background: var(--main); }

/* Workspace */
.workspace { flex: 1; display: flex; min-height: 0; }
.chat { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chat-log { flex: 1; overflow-y: auto; padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.empty-state {
  margin: auto; text-align: center; font-weight: 700;
  background: var(--panel); border: var(--bw) solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px 22px;
}
.empty-state p { margin: 0; }

.msg {
  max-width: 80%; padding: 12px 15px; line-height: 1.55;
  white-space: pre-wrap; word-wrap: break-word; box-shadow: var(--shadow);
}
.msg.user { align-self: flex-end; background: var(--main); }
.msg.assistant { align-self: flex-start; background: var(--panel); }
.msg.blocked { background: var(--danger); }
.msg.tool {
  align-self: flex-start; background: var(--warn);
  font-family: var(--mono); font-size: 12px; max-width: 80%;
}
.msg .role-tag { display: block; font-size: 11px; font-weight: 800; margin-bottom: 6px; text-transform: uppercase; letter-spacing: .05em; }
.msg pre {
  background: var(--code-bg); border: var(--bw) solid var(--border); border-radius: var(--radius);
  padding: 10px; overflow-x: auto; margin: 8px 0 0;
}
.msg code { font-family: var(--mono); font-size: 12.5px; }
.toolcall {
  display: inline-block; font-family: var(--mono); font-size: 12px; font-weight: 700;
  background: var(--violet); border: var(--bw) solid var(--border); border-radius: var(--radius);
  padding: 2px 8px; margin-top: 8px;
}

.chat-form { display: flex; gap: 12px; padding: 16px 24px; border-top: var(--bw) solid var(--border); background: var(--panel); }
#chat-input {
  flex: 1; background: var(--panel); box-shadow: var(--shadow);
  color: var(--text); padding: 11px 13px; font-size: 14px; font-weight: 500; font-family: var(--sans);
}
#chat-input:focus { outline: none; box-shadow: none; transform: translate(4px, 4px); }
#chat-input:disabled { opacity: .5; }
#chat-send {
  background: var(--main); color: var(--text); box-shadow: var(--shadow);
  padding: 0 22px; font-size: 14px; font-weight: 800; font-family: var(--sans); cursor: pointer;
  transition: transform .1s, box-shadow .1s;
}
#chat-send:disabled { opacity: .5; cursor: not-allowed; }

/* Side panel (requirements) */
.side-panel {
  width: 360px; flex: 0 0 360px; border-left: var(--bw) solid var(--border);
  background: var(--panel); display: flex; flex-direction: column;
}
.side-panel.hidden { display: none; }
.side-panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: var(--bw) solid var(--border);
  background: var(--warn); font-weight: 800;
}
.side-panel-body { padding: 18px; overflow-y: auto; }

/* Markdown rendering */
.markdown h2 { font-size: 18px; font-weight: 800; margin: 0 0 12px; }
.markdown h3 {
  display: inline-block; font-size: 13px; font-weight: 800; margin: 16px 0 8px;
  background: var(--main); border: var(--bw) solid var(--border); border-radius: var(--radius); padding: 2px 8px;
}
.markdown p { margin: 0 0 10px; line-height: 1.6; }
.markdown ul { margin: 0 0 10px; padding-left: 20px; }
.markdown li { margin: 4px 0; line-height: 1.55; }
.markdown code {
  background: var(--code-bg); border: 1.5px solid var(--border); border-radius: 4px;
  padding: 0 5px; font-family: var(--mono); font-size: 12.5px;
}
.markdown strong { font-weight: 800; }

/* Modal */
.modal {
  position: fixed; inset: 0; background: rgba(0, 0, 0, .8);
  display: flex; align-items: center; justify-content: center; z-index: 40;
}
.modal.hidden { display: none; }
.modal-card {
  background: var(--panel); box-shadow: var(--shadow);
  width: 640px; max-width: 92vw; max-height: 82vh; display: flex; flex-direction: column; overflow: hidden;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: var(--bw) solid var(--border); background: var(--main); font-weight: 800;
}
.modal-body { padding: 18px; overflow-y: auto; }
.modal-body pre {
  background: var(--code-bg); border: var(--bw) solid var(--border); border-radius: var(--radius);
  padding: 14px; overflow-x: auto; white-space: pre-wrap;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.55; margin: 0;
}
.modal-foot { padding: 12px 18px; border-top: var(--bw) solid var(--border); text-align: right; }
.locked-note { font-weight: 600; margin: 0; }

.x {
  background: var(--panel); color: var(--text); width: 28px; height: 28px;
  font-size: 18px; font-weight: 800; line-height: 1; cursor: pointer;
  box-shadow: 2px 2px 0 0 var(--border); padding: 0;
}
.x:hover { transform: translate(2px, 2px); box-shadow: none; }

/* Toast */
.toast {
  position: fixed; bottom: 96px; left: 50%; transform: translateX(-50%);
  padding: 12px 20px; font-size: 14px; font-weight: 700; z-index: 50;
  background: var(--panel); box-shadow: var(--shadow);
}
.toast.hidden { display: none; }
.toast.pass { background: var(--success); }
.toast.fail { background: var(--danger); }

@media (max-width: 820px) {
  .sidebar { width: 190px; flex-basis: 190px; }
  .side-panel { position: fixed; right: 0; top: 60px; bottom: 0; z-index: 30; }
  .msg { max-width: 92%; }
  .lab-header { flex-direction: column; }
}
.badge:empty { display: none; }

/* Login page */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 16px; }
.login-wrap { width: 380px; max-width: 100%; }
.login-brand { justify-content: center; margin-bottom: 22px; font-size: 22px; }
.login-card {
  background: var(--panel); border: var(--bw) solid var(--border); border-radius: var(--radius);
  box-shadow: 6px 6px 0 0 var(--border); overflow: hidden;
}
.login-head {
  background: var(--main); border-bottom: var(--bw) solid var(--border);
  padding: 14px 20px; font-size: 18px; font-weight: 800;
}
.login-body { padding: 20px; display: flex; flex-direction: column; }
.login-body label { font-weight: 700; font-size: 13px; margin-bottom: 6px; }
.login-body input {
  border: var(--bw) solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 10px 12px; font-size: 14px; font-weight: 500; font-family: var(--sans);
  margin-bottom: 18px; background: var(--panel); color: var(--text);
  transition: transform .1s, box-shadow .1s;
}
.login-body input:focus { outline: none; transform: translate(4px, 4px); box-shadow: none; }
.login-body button {
  margin-top: 4px; padding: 11px; font-size: 15px; font-weight: 800; font-family: var(--sans);
  background: var(--main); color: var(--text); cursor: pointer;
  border: var(--bw) solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  transition: transform .1s, box-shadow .1s;
}
.login-body button:hover:not(:disabled) { transform: translate(4px, 4px); box-shadow: none; }
.login-body button:disabled { opacity: .6; cursor: wait; }
.login-error {
  background: var(--danger); border: var(--bw) solid var(--border); border-radius: var(--radius);
  padding: 9px 12px; font-weight: 700; font-size: 13px; margin-bottom: 14px;
}
.login-error.hidden { display: none; }

/* Logout */
.logout-btn { padding: 4px 10px; font-size: 12px; box-shadow: 2px 2px 0 0 var(--border); }
.logout-btn:hover:not(:disabled) { transform: translate(2px, 2px); }

/* Password show/hide */
.pw-row { display: flex; gap: 10px; margin-bottom: 18px; }
.pw-row input { flex: 1; min-width: 0; margin-bottom: 0; }
.login-body .pw-toggle {
  margin-top: 0; padding: 0 14px; font-size: 13px; background: var(--warn);
}
.login-body .pw-toggle[aria-pressed="true"] { background: var(--panel); }

/* Indirect-injection inbox preview */
.inject-marker {
  background: var(--danger); color: var(--text);
  border: 1.5px solid var(--border); border-radius: 3px;
  padding: 0 4px; font-weight: 700;
}
.chat-note {
  padding: 8px 24px; font-size: 12.5px; font-weight: 600;
  background: var(--warn); border-top: var(--bw) solid var(--border);
}
.chat-note.hidden { display: none; }
.msg.tool pre { margin: 6px 0 0; white-space: pre-wrap; word-break: break-word; font-family: var(--mono); font-size: 12px; }

/* CTF flags */
.flag-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 24px; background: var(--success);
  border-bottom: var(--bw) solid var(--border);
}
.flag-bar.hidden { display: none; }
.flag-label { font-weight: 800; font-size: 11px; letter-spacing: .08em; }
.flag-bar code {
  flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap;
  font-family: var(--mono); font-size: 13px; font-weight: 700;
  background: var(--panel); border: var(--bw) solid var(--border);
  border-radius: var(--radius); padding: 5px 10px;
}
.flag-bar .tool-btn { padding: 5px 12px; box-shadow: 2px 2px 0 0 var(--border); }
.flag-bar .tool-btn:hover { transform: translate(2px, 2px); box-shadow: none; }
.flags-who { margin: 0 0 12px; font-size: 13px; }
#flags-body pre {
  background: var(--code-bg); border: var(--bw) solid var(--border); border-radius: var(--radius);
  padding: 14px; margin: 0; overflow-x: auto; white-space: pre-wrap;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.7;
}
.modal-foot { display: flex; gap: 10px; justify-content: flex-end; }
.login-hint { margin: 14px 0 0; font-size: 12px; font-weight: 500; line-height: 1.5; }