/* ────────────────────────────────────────────
   Korio UI — Estilos
   BEM · Mobile-first · CSS custom properties
──────────────────────────────────────────── */

:root {
  --color-bg: #f1f5f9;
  --color-surface: #ffffff;
  --color-sidebar-bg: #0f172a;
  --color-sidebar-text: #e2e8f0;
  --color-sidebar-muted: #94a3b8;
  --color-sidebar-border: #1e293b;
  --color-sidebar-hover: #1e293b;

  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-text: #ffffff;

  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;

  --color-user-bubble: #3b82f6;
  --color-assistant-bg: #ffffff;

  --color-sim-high: #16a34a;
  --color-sim-mid: #d97706;
  --color-sim-low: #dc2626;

  --color-status-ok: #22c55e;
  --color-status-error: #ef4444;
  --color-status-checking: #f59e0b;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);

  --sidebar-width: 280px;
  --font: system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

[hidden] { display: none !important; }

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

body { display: flex; overflow: hidden; }

/* ── Sidebar ─────────────────────────────── */

.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--color-sidebar-bg);
  color: var(--color-sidebar-text);
  display: flex;
  flex-direction: column;
  height: 100vh;
  border-right: 1px solid var(--color-sidebar-border);
}

.sidebar__header {
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--color-sidebar-border);
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar__logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  object-fit: contain;
}

.sidebar__title {
  font-size: 16px;
  font-weight: 700;
  color: white;
  line-height: 1.2;
}

.sidebar__subtitle {
  font-size: 11px;
  color: var(--color-sidebar-muted);
  letter-spacing: .04em;
}

.sidebar__context {
  padding: 16px;
  border-bottom: 1px solid var(--color-sidebar-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.selector { display: flex; flex-direction: column; gap: 4px; }

.selector__label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-sidebar-muted);
}

.selector__input {
  background: var(--color-sidebar-hover);
  border: 1px solid #334155;
  border-radius: var(--radius-sm);
  color: var(--color-sidebar-text);
  padding: 7px 10px;
  font-size: 13px;
  font-family: var(--font);
  cursor: pointer;
  width: 100%;
}

.selector__input:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }

.user-badge {
  background: #1e293b;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 12px;
  color: var(--color-sidebar-muted);
  line-height: 1.4;
  min-height: 36px;
}

.user-badge strong { color: var(--color-sidebar-text); display: block; margin-bottom: 2px; }

.sidebar__history {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar__section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-sidebar-muted);
}

.history-count { font-weight: 400; }

.history-list { list-style: none; display: flex; flex-direction: column; gap: 2px; }

.history-list__item {
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  color: var(--color-sidebar-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background .15s, color .15s;
}

.history-list__item:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-sidebar-text);
}

.sidebar__footer {
  padding: 12px 16px;
  border-top: 1px solid var(--color-sidebar-border);
  display: flex;
  gap: 8px;
}

/* ── Main ────────────────────────────────── */

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Chat ────────────────────────────────── */

.chat {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.chat__empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  opacity: .7;
}

.chat__empty-icon { width: 64px; height: 64px; margin-bottom: 8px; object-fit: contain; opacity: 0.5; }

.chat__empty-title { font-size: 18px; font-weight: 600; color: var(--color-text); }

.chat__empty-hint { font-size: 13px; color: var(--color-text-muted); max-width: 360px; line-height: 1.5; }

.chat__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 12px;
  max-width: 500px;
}

.suggestion-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 12px;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: border-color .15s, color .15s;
}

.suggestion-chip:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ── Message pair ────────────────────────── */

.message-pair { display: flex; flex-direction: column; gap: 8px; animation: fade-in .2s ease; }

@keyframes fade-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.message-query {
  align-self: flex-end;
  background: var(--color-user-bubble);
  color: white;
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-sm) var(--radius-xl);
  padding: 10px 16px;
  max-width: 70%;
  font-size: 14px;
  line-height: 1.5;
}

.message-response {
  align-self: flex-start;
  max-width: 85%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.message-response__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm) var(--radius-xl) var(--radius-xl) var(--radius-xl);
  padding: 14px 16px;
  box-shadow: var(--shadow-sm);
}

.message-response__answer {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text);
  white-space: pre-wrap;
}

.message-response__no-context {
  font-style: italic;
  color: var(--color-text-muted);
}

.message-response__answer code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 1px 5px;
}

.message-response__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
}

.meta-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

.meta-badge--latency { color: var(--color-primary); border-color: #bfdbfe; background: #eff6ff; }

/* ── Sources ─────────────────────────────── */

.sources { display: flex; flex-direction: column; gap: 4px; }

.sources__toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 12px;
  color: var(--color-text-muted);
  user-select: none;
  width: fit-content;
}

.sources__toggle:hover { color: var(--color-primary); }

.sources__toggle-icon { transition: transform .2s; font-size: 10px; }
.sources__toggle-icon--open { transform: rotate(90deg); }

.sources__list { display: flex; flex-direction: column; gap: 4px; padding-left: 4px; }

.source-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 12px;
}

.source-chip__filename {
  color: var(--color-text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}

.source-chip__sim {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 20px;
  color: white;
  flex-shrink: 0;
}

.source-chip__sim--high { background: var(--color-sim-high); }
.source-chip__sim--mid  { background: var(--color-sim-mid); }
.source-chip__sim--low  { background: var(--color-sim-low); }

/* ── Loading ─────────────────────────────── */

.message-response--loading .message-response__card {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Input area ──────────────────────────── */

.input-area {
  padding: 12px 24px 16px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-area__inner {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 10px 12px;
  transition: border-color .15s;
}

.input-area__inner:focus-within { border-color: var(--color-primary); }

.input-area__textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font);
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
  max-height: 140px;
  overflow-y: auto;
}

.input-area__textarea::placeholder { color: var(--color-text-muted); }

.input-area__hint {
  font-size: 11px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  padding-left: 4px;
}

/* ── Buttons ─────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font);
  font-weight: 500;
  transition: background .15s, opacity .15s;
  white-space: nowrap;
}

.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-text);
  padding: 8px 10px;
  border-radius: var(--radius-md);
}

.btn--primary:hover:not(:disabled) { background: var(--color-primary-hover); }

.btn--ghost {
  background: transparent;
  color: var(--color-sidebar-muted);
  border: 1px solid #334155;
  padding: 6px 12px;
  font-size: 12px;
}

.btn--ghost:hover:not(:disabled) { background: var(--color-sidebar-hover); color: var(--color-sidebar-text); }

.btn--sm { padding: 5px 10px; font-size: 12px; }

/* ── Status dot ──────────────────────────── */

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot--ok      { background: var(--color-status-ok); }
.status-dot--error   { background: var(--color-status-error); }
.status-dot--checking {
  background: var(--color-status-checking);
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

/* ── Modal ───────────────────────────────── */

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fade-in .15s ease;
}

.modal-overlay[hidden] { display: none; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  width: 480px;
  max-width: calc(100vw - 32px);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal__title { font-size: 15px; font-weight: 600; }

.modal__close {
  background: none; border: none; cursor: pointer;
  font-size: 20px; color: var(--color-text-muted); line-height: 1;
  padding: 2px 6px; border-radius: var(--radius-sm);
}

.modal__close:hover { background: var(--color-bg); }

.modal__body { padding: 20px; display: flex; flex-direction: column; gap: 16px; }

.modal__footer {
  padding: 14px 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.modal__footer .btn--ghost { color: var(--color-text-muted); border-color: var(--color-border); }
.modal__footer .btn--ghost:hover { background: var(--color-bg); color: var(--color-text); }

.modal__footer .btn--primary { padding: 8px 20px; }

/* ── Drop zone ───────────────────────────── */

.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--color-text-muted);
  transition: border-color .15s, background .15s;
  cursor: pointer;
}

.drop-zone:hover, .drop-zone--active {
  border-color: var(--color-primary);
  background: #eff6ff;
  color: var(--color-primary);
}

.drop-zone svg { opacity: .5; }

.drop-zone p { font-size: 13px; }

.drop-zone__hint { font-size: 11px; opacity: .7; }

.drop-zone__link { color: var(--color-primary); cursor: pointer; text-decoration: underline; }

.ingest-file-info {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

.ingest-file-info__name { flex: 1; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.selector--inline .selector__label { color: var(--color-text-muted); }
.selector--inline .selector__input {
  background: var(--color-bg);
  border-color: var(--color-border);
  color: var(--color-text);
}

/* ── Progress bar ────────────────────────── */

.modal__progress {
  padding: 0 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal__progress[hidden] { display: none; }

.progress-bar {
  height: 4px;
  background: var(--color-bg);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
}

.progress-bar__fill--animated {
  width: 40%;
  animation: progress-slide 1.2s ease-in-out infinite;
}

@keyframes progress-slide {
  0%   { margin-left: -40%; }
  100% { margin-left: 100%; }
}

.modal__progress-text { font-size: 12px; color: var(--color-text-muted); text-align: center; }

/* ─── Banner de conflicto en respuesta de búsqueda ─── */

.conflict-banner {
  background: #fef3c7;
  border-left: 3px solid #f59e0b;
  color: #78350f;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 12px;
}

.source-chip--disputed {
  background: #fff7ed;
  border-color: #fdba74;
}

.source-chip__disputed {
  font-size: 10px;
  background: #f59e0b;
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .3px;
}

/* ─── Conflict Report (gobernanza activa) ─── */

.conflict-report {
  margin-top: 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 12px;
  text-align: left;
}

.conflict-report__header {
  padding: 8px 12px;
  background: #fef9c3;
  border-bottom: 1px solid #fde68a;
  color: #92400e;
  line-height: 1.5;
}

.conflict-report__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.conflict-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.conflict-item:last-child { border-bottom: none; }

.conflict-item--pending { background: #fff7ed; }
.conflict-item--auto    { background: #f0fdf4; }
.conflict-item--resolved { background: #f0f9ff; }

.conflict-item__file {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
  font-weight: 500;
}

.conflict-item__sim {
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.conflict-item__resolution {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--color-text-muted);
  white-space: nowrap;
}