frontend/style.css

/* ═══════════════════════════════════════════════════════════════
   PRobe Dashboard — stylesheet
   Design tokens: dark IDE theme, accent #4f9eff
═══════════════════════════════════════════════════════════════ */

/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-0:       #0d1117;   /* deepest background                */
  --bg-1:       #161b22;   /* panel background                  */
  --bg-2:       #21262d;   /* card / input background           */
  --bg-3:       #30363d;   /* hover / border                    */
  --text-main:  #e6edf3;
  --text-dim:   #8b949e;
  --accent:     #4f9eff;
  --green:      #3fb950;
  --red:        #f85149;
  --yellow:     #d29922;
  --orange:     #db6d28;
  --purple:     #a371f7;
  --radius:     8px;
  --font-mono:  'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --font-ui:    'Inter', system-ui, sans-serif;
  --topbar-h:   52px;
}

html, body {
  height: 100%;
  background: var(--bg-0);
  color: var(--text-main);
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.5;
}

/* ── Top bar ──────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg-1);
  border-bottom: 1px solid var(--bg-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 100;
}
.topbar-left { display: flex; align-items: center; gap: 1rem; }
.logo { font-size: 1.15rem; font-weight: 700; color: var(--accent); }
.tagline { color: var(--text-dim); font-size: 0.8rem; }
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }

.badge {
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  white-space: nowrap;
}
.badge.connected    { color: var(--green);  border-color: var(--green); }
.badge.disconnected { color: var(--text-dim); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  padding: 6px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-primary  { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-secondary{ background: var(--bg-2);   color: var(--text-main); border-color: var(--bg-3); }
.btn-action   { width: 100%; margin-bottom: 0.4rem; background: var(--bg-2); color: var(--text-main); border-color: var(--bg-3); }
.btn-info     { border-color: var(--accent);  color: var(--accent); }
.btn-warn     { border-color: var(--yellow);  color: var(--yellow); }
.btn-success  { border-color: var(--green);   color: var(--green);  }
.btn-danger   { border-color: var(--red);     color: var(--red);    background: rgba(248,81,73,0.1); }
.btn-escalate { border-color: var(--purple);  color: var(--purple); background: rgba(163,113,247,0.1); }
.btn:not(:disabled):hover { opacity: 0.82; }

/* ── Main three-column layout ─────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 1fr 310px 310px;
  grid-template-rows: calc(100vh - var(--topbar-h));
  gap: 0;
  margin-top: var(--topbar-h);
  overflow: hidden;
}

/* ── Generic panel ────────────────────────────────────────── */
.panel {
  background: var(--bg-1);
  border-right: 1px solid var(--bg-3);
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.panel:last-child { border-right: none; }
.panel-header {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.section-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Task metadata ────────────────────────────────────────── */
#task-label { color: var(--accent); font-size: 0.9rem; }

.difficulty-badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  text-transform: capitalize;
}
.difficulty-badge.ultra-easy { color: var(--green);  border-color: var(--green);  }
.difficulty-badge.easy       { color: var(--accent); border-color: var(--accent); }
.difficulty-badge.medium     { color: var(--yellow); border-color: var(--yellow); }
.difficulty-badge.hard       { color: var(--orange); border-color: var(--orange); }
.difficulty-badge.adversarial{ color: var(--red);    border-color: var(--red);    }

.steps-counter { margin-left: auto; font-size: 0.8rem; color: var(--text-dim); }

.task-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.6;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
}

.adversarial-hint {
  font-size: 0.8rem;
  background: rgba(163,113,247,0.1);
  border: 1px solid var(--purple);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  color: var(--purple);
}

/* ── Code viewer ──────────────────────────────────────────── */
.code-wrapper {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  background: var(--bg-0);
}
.code-block {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.65;
  padding: 0.75rem 1rem;
  white-space: pre;
  counter-reset: line-counter;
}
.code-line { display: block; }
.code-line-num {
  user-select: none;
  display: inline-block;
  width: 2.8em;
  color: var(--text-dim);
  text-align: right;
  margin-right: 1em;
  font-size: 0.72rem;
}
/* Highlighted lines (comment target or scanner finding) */
.code-line.hl-comment  { background: rgba(79,158,255,0.12); border-left: 3px solid var(--accent); }
.code-line.hl-issue    { background: rgba(248,81,73,0.10);  border-left: 3px solid var(--red);    }
.code-line.hl-scanner  { background: rgba(210,153,34,0.10); border-left: 3px solid var(--yellow); }
.code-line.hl-context  { background: rgba(63,185,80,0.08);  border-left: 3px solid var(--green);  }

.placeholder-text { color: var(--text-dim); font-style: italic; }

/* ── Hints ────────────────────────────────────────────────── */
.hints-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.hint-item {
  font-size: 0.8rem;
  background: rgba(63,185,80,0.08);
  border: 1px solid var(--green);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  color: var(--text-main);
  white-space: pre-wrap;
}

/* ── Action cards ─────────────────────────────────────────── */
.action-card {
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.action-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.form-row label { font-size: 0.75rem; color: var(--text-dim); }
.form-row input,
.form-row select,
.form-row textarea {
  background: var(--bg-0);
  border: 1px solid var(--bg-3);
  border-radius: 5px;
  color: var(--text-main);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  padding: 5px 8px;
  resize: vertical;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.quick-actions {
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.separator { height: 1px; background: var(--bg-3); margin: 0.3rem 0; }

/* ── Reward ring ──────────────────────────────────────────── */
.reward-ring-wrap {
  position: relative;
  width: 120px;
  margin: 0 auto;
}
.reward-ring { width: 120px; height: 120px; transform: rotate(-90deg); }
.ring-bg    { fill: none; stroke: var(--bg-2); stroke-width: 10; }
.ring-track {
  fill: none;
  stroke: var(--accent);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 314;   /* 2π × r=50 */
  stroke-dashoffset: 314;
  transition: stroke-dashoffset 0.5s ease, stroke 0.5s ease;
}
.ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}
.ring-label small { font-size: 0.65rem; color: var(--text-dim); font-weight: 400; }

/* ── Component bar chart ──────────────────────────────────── */
.component-bars { display: flex; flex-direction: column; gap: 6px; }
.bar-row { display: flex; align-items: center; gap: 6px; }
.bar-label { font-size: 0.72rem; color: var(--text-dim); width: 90px; flex-shrink: 0; }
.bar-track { flex: 1; height: 7px; background: var(--bg-2); border-radius: 4px; overflow: hidden; }
.bar-fill  { height: 100%; border-radius: 4px; width: 0; transition: width 0.4s ease; }
.bar-fill.positive { background: var(--green);  }
.bar-fill.negative { background: var(--red);    }
.bar-fill.neutral  { background: var(--yellow); }
.bar-val { font-size: 0.72rem; width: 36px; text-align: right; color: var(--text-dim); }

/* ── Issues progress ──────────────────────────────────────── */
.issues-progress { display: flex; align-items: center; gap: 8px; }
.issues-bar-wrap {
  flex: 1; height: 8px;
  background: var(--bg-2);
  border-radius: 4px;
  overflow: hidden;
}
.issues-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  width: 0;
  transition: width 0.4s ease;
}

/* ── History feed ─────────────────────────────────────────── */
.history-feed {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 320px;
  overflow-y: auto;
}
.history-empty { color: var(--text-dim); font-size: 0.8rem; font-style: italic; }
.history-item {
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: 6px;
  padding: 0.45rem 0.65rem;
  font-size: 0.78rem;
  border-left: 3px solid var(--bg-3);
}
.history-item.positive { border-left-color: var(--green);  }
.history-item.negative { border-left-color: var(--red);    }
.history-item.neutral  { border-left-color: var(--yellow); }
.history-item .h-action { font-weight: 700; color: var(--accent); }
.history-item .h-reward { font-weight: 700; }
.history-item .h-reward.pos { color: var(--green); }
.history-item .h-reward.neg { color: var(--red);   }
.history-item .h-explain { color: var(--text-dim); margin-top: 2px; line-height: 1.4; }

/* ── Episode-end modal ────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
}
.modal {
  background: var(--bg-1);
  border: 1px solid var(--bg-3);
  border-radius: 12px;
  padding: 2rem;
  max-width: 440px;
  width: 90%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.modal-icon { font-size: 3rem; }
.modal h2   { font-size: 1.3rem; }
.modal p    { color: var(--text-dim); font-size: 0.88rem; line-height: 1.6; }
.modal-stats {
  width: 100%;
  background: var(--bg-2);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 1rem;
  text-align: left;
  font-size: 0.82rem;
}
.modal-stats .stat-label { color: var(--text-dim); }
.modal-stats .stat-value { font-weight: 700; }

/* ── Scrollbar styling ────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }