/* Simulador dbt — tema oscuro tipo editor de código, mobile-friendly. */

/* Varias reglas de abajo fijan `display` en elementos que también usan el
   atributo [hidden] (modal-scrim, exercise-bar). Sin esto, esas reglas de
   autor le ganan al `[hidden]{display:none}` del user-agent y el elemento
   queda visible/clickeable aunque tenga hidden. */
[hidden] { display: none !important; }

:root {
  --bg:        #0d1117;
  --bg-2:      #11161f;
  --bg-3:      #161c26;
  --panel:     #0f141b;
  --border:    #232b38;
  --border-2:  #2d3746;
  --text:      #d7dee8;
  --text-dim:  #8b97a7;
  --text-mut:  #5c6675;
  --accent:    #ff694a;   /* naranja dbt */
  --accent-2:  #ff8a72;
  --green:     #4ec98a;
  --red:       #ff6b6b;
  --yellow:    #e3b341;
  --blue:      #6cb6ff;
  --purple:    #c29bff;
  --radius:    9px;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
  --sans: 'Space Grotesk', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---------- topbar ---------- */
.topbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  position: relative; z-index: 32; /* por encima de statement-panel/scrim (30/31) */
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  font-family: var(--mono);
  font-weight: 600;
  background: var(--accent);
  color: #1a0e0a;
  padding: 4px 9px;
  border-radius: 7px;
  letter-spacing: -.5px;
}
.brand-title { font-weight: 600; letter-spacing: -.2px; }
.brand-sub { font-size: 11.5px; color: var(--text-dim); }
.topbar-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.engine-status { font-size: 11.5px; color: var(--text-dim); font-family: var(--mono); }
.engine-status.ok { color: var(--green); }
.engine-status.err { color: var(--red); }

.btn {
  font-family: var(--sans);
  font-size: 13px;
  border: 1px solid var(--border-2);
  background: var(--bg-3);
  color: var(--text);
  padding: 7px 13px;
  border-radius: 8px;
  cursor: pointer;
  transition: .15s;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--text-mut); background: #1c2431; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #1a0e0a; font-weight: 600; }
.btn-primary:hover:not(:disabled) { background: var(--accent-2); border-color: var(--accent-2); }
.btn-ghost { background: transparent; }
.btn-small { padding: 5px 11px; font-size: 12px; }

/* ---------- workbench (3 paneles) ---------- */
.workbench {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) 40%;
  grid-template-areas:
    "tree editor"
    "tree terminal";
  gap: 1px;
  background: var(--border);
}
.panel { background: var(--panel); min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.panel-tree     { grid-area: tree; }
.panel-editor   { grid-area: editor; }
.panel-terminal { grid-area: terminal; }

.panel-head {
  flex: 0 0 auto;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text-dim);
  padding: 9px 13px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.link-btn {
  background: none; border: none; color: var(--text-mut);
  font-family: var(--sans); font-size: 11px; cursor: pointer; text-transform: none;
  letter-spacing: 0;
}
.link-btn:hover { color: var(--text); }

/* ---------- file tree ---------- */
.file-tree { overflow: auto; padding: 6px 0; flex: 1 1 auto; font-family: var(--mono); font-size: 13px; }
.tree-node { user-select: none; }
.tree-row {
  display: flex; align-items: center; gap: 6px;
  padding: 3px 10px; cursor: pointer; white-space: nowrap;
  color: var(--text-dim); border-left: 2px solid transparent;
}
.tree-row:hover { background: var(--bg-3); color: var(--text); }
.tree-row.is-active { background: #1a2230; color: var(--text); border-left-color: var(--accent); }
.tree-row.is-dirty .tree-name::after { content: ' •'; color: var(--yellow); }
.tree-twist { width: 12px; display: inline-block; color: var(--text-mut); transition: transform .12s; }
.tree-node.collapsed > .tree-children { display: none; }
.tree-node.collapsed .tree-twist { transform: rotate(-90deg); }
.tree-icon { width: 15px; text-align: center; opacity: .9; }
.tree-children { margin-left: 12px; }
.tree-name { overflow: hidden; text-overflow: ellipsis; }

/* ---------- tabs + editor ---------- */
.tab-bar {
  flex: 0 0 auto; display: flex; overflow-x: auto;
  background: var(--bg-2); border-bottom: 1px solid var(--border); min-height: 37px;
}
.tab {
  display: flex; align-items: center; gap: 7px;
  padding: 8px 12px; font-family: var(--mono); font-size: 12.5px;
  color: var(--text-dim); cursor: pointer; white-space: nowrap;
  border-right: 1px solid var(--border); border-top: 2px solid transparent;
}
.tab:hover { background: var(--bg-3); color: var(--text); }
.tab.is-active { background: var(--panel); color: var(--text); border-top-color: var(--accent); }
.tab .dirty-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--yellow); flex-shrink: 0; }
.tab .tab-close { color: var(--text-mut); font-size: 14px; line-height: 1; }
.tab .tab-close:hover { color: var(--red); }

.editor-wrap { flex: 1 1 auto; position: relative; min-height: 0; }
.editor-empty {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--text-mut); padding: 20px; text-align: center; font-size: 13px;
}

/* ---------- pantalla de bienvenida (primer load, sin ejercicio activo) ---------- */
.welcome-screen {
  position: absolute; inset: 0; overflow: auto;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  background: var(--panel);
}
.welcome-card { max-width: 480px; text-align: center; }
.welcome-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; margin: 0 auto 16px; border-radius: 10px;
  background: var(--accent); color: #1a0e0a; font-family: var(--mono); font-weight: 700; font-size: 15px;
}
.welcome-card h1 { font-size: 21px; margin: 0 0 12px; }
.welcome-card p { color: var(--text-dim); font-size: 13.5px; line-height: 1.55; margin: 0 0 12px; }
.welcome-card p code { font-family: var(--mono); background: var(--bg-3); padding: 1px 5px; border-radius: 4px; color: var(--accent-2); }
.welcome-sub { color: var(--text-mut) !important; font-size: 12.5px !important; }
.welcome-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.welcome-actions .btn { width: 100%; padding: 10px; font-size: 13.5px; }
.editor {
  width: 100%; height: 100%; resize: none; border: none; outline: none;
  background: var(--panel); color: var(--text);
  font-family: var(--mono); font-size: 13.5px; line-height: 1.55;
  padding: 14px 16px; tab-size: 4; white-space: pre;
}
.editor-foot {
  flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between;
  padding: 7px 13px; border-top: 1px solid var(--border); background: var(--bg-2);
}
.editor-path { font-family: var(--mono); font-size: 11.5px; color: var(--text-mut); }

/* ---------- terminal ---------- */
.term-output {
  flex: 1 1 auto; overflow: auto; padding: 10px 13px;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.5;
  white-space: pre-wrap; word-break: break-word;
}
.term-line { min-height: 1.5em; }
.term-cmd { color: var(--text); }
.term-cmd .term-prompt { color: var(--accent); margin-right: 6px; }
.t-ok     { color: var(--green); }
.t-error  { color: var(--red); }
.t-skip   { color: var(--yellow); }
.t-run    { color: var(--blue); }
.t-muted  { color: var(--text-mut); }
.t-bold   { color: var(--text); font-weight: 600; }
.t-info   { color: var(--purple); }
.t-sql    { color: var(--text-dim); }

.term-inputline {
  flex: 0 0 auto; display: flex; align-items: center; gap: 6px;
  padding: 8px 13px; border-top: 1px solid var(--border); background: var(--bg-2);
}
.term-prompt { font-family: var(--mono); font-size: 12.5px; color: var(--accent); flex-shrink: 0; }
.term-input {
  flex: 1 1 auto; background: none; border: none; outline: none;
  color: var(--text); font-family: var(--mono); font-size: 12.5px;
}
.term-input::placeholder { color: var(--text-mut); }

/* ---------- mobile tabs ---------- */
.mobile-tabs { display: none; }

@media (max-width: 820px) {
  body { overflow: auto; }
  .topbar { flex-wrap: wrap; }
  .brand-sub { display: none; }
  .workbench {
    display: block;
    flex: 1 1 auto;
    padding-bottom: 54px; /* espacio para la barra de tabs fija */
  }
  .panel {
    display: none;
    height: calc(100dvh - 62px - 54px);
    border-top: 1px solid var(--border);
  }
  .panel.is-shown { display: flex; }

  .mobile-tabs {
    display: flex;
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
    background: var(--bg-2); border-top: 1px solid var(--border);
  }
  .mtab {
    flex: 1; padding: 15px 4px; background: none; border: none;
    color: var(--text-dim); font-family: var(--sans); font-size: 13px; cursor: pointer;
    border-top: 2px solid transparent;
  }
  .mtab.is-active { color: var(--text); border-top-color: var(--accent); background: var(--panel); }
  .topbar-actions .engine-status { display: none; }
}

/* ---------- ejercicios (F4) ---------- */
.exercise-bar {
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 8px 16px;
  background: linear-gradient(90deg, #17202c, var(--bg-2));
  border-bottom: 1px solid var(--border);
  position: relative; z-index: 32; /* por encima de statement-panel/scrim (30/31) */
}
.ex-info { display: flex; align-items: center; gap: 10px; min-width: 0; }
.ex-badge {
  font-family: var(--mono); font-weight: 600; font-size: 12px;
  background: var(--accent); color: #1a0e0a; padding: 3px 8px; border-radius: 6px; flex-shrink: 0;
}
.ex-title { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ex-actions { display: flex; gap: 8px; flex-shrink: 0; }

.verify-result {
  flex: 0 0 auto; padding: 9px 16px; font-size: 13px; border-bottom: 1px solid var(--border);
  font-family: var(--mono); line-height: 1.4;
}
.verify-result.pass { background: rgba(78,201,138,.12); color: var(--green); border-left: 3px solid var(--green); }
.verify-result.fail { background: rgba(255,107,107,.10); color: #ffb3b3; border-left: 3px solid var(--red); }
.verify-result.pending { background: var(--bg-3); color: var(--text-dim); }

.statement-scrim { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 30; }
.statement-panel {
  position: fixed; z-index: 31; left: 0; right: 0; top: 0;
  max-height: 72vh; overflow: auto;
  background: var(--bg-2); border-bottom: 1px solid var(--border-2);
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
  padding: 20px 24px 24px;
}
.statement-body { max-width: 780px; margin: 0 auto; }
.statement-hints { max-width: 780px; margin: 12px auto 0; }
.statement-hints details {
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 12px; margin-top: 8px;
  background: var(--panel); font-size: 13px; color: var(--text-dim);
}
.statement-hints summary { cursor: pointer; color: var(--text); }
.statement-hints code { font-family: var(--mono); color: var(--accent-2); }

/* markdown dentro del enunciado */
.md h1 { font-size: 20px; margin: 0 0 12px; letter-spacing: -.3px; }
.md h2 { font-size: 16px; margin: 18px 0 8px; }
.md h3 { font-size: 14px; margin: 14px 0 6px; color: var(--text-dim); }
.md p { margin: 8px 0; line-height: 1.6; color: var(--text); }
.md ul, .md ol { margin: 8px 0; padding-left: 22px; line-height: 1.6; }
.md li { margin: 3px 0; }
.md strong { color: #fff; }
.md code { font-family: var(--mono); background: var(--bg-3); padding: 1px 5px; border-radius: 4px; font-size: .92em; color: var(--accent-2); }
.md pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; overflow-x: auto; margin: 10px 0; }
.md pre code { background: none; padding: 0; color: var(--text); }
.md blockquote { border-left: 3px solid var(--border-2); margin: 10px 0; padding: 2px 14px; color: var(--text-dim); }

/* modales */
.modal-scrim {
  position: fixed; inset: 0; z-index: 40; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.5); padding: 20px;
}
.modal {
  background: var(--bg-2); border: 1px solid var(--border-2); border-radius: 12px;
  width: 100%; max-width: 620px; max-height: 84vh; display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.modal-title { font-weight: 600; font-size: 15px; }
.modal-sub { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
.modal-close { background: none; border: none; color: var(--text-mut); font-size: 18px; cursor: pointer; }
.modal-close:hover { color: var(--text); }

.units-list { overflow: auto; padding: 8px 10px 14px; }
.unit-block-title { font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--text-mut); margin: 14px 8px 6px; }
.block-start-badge {
  text-transform: none; letter-spacing: normal; font-size: 10.5px; font-weight: 700;
  background: var(--accent); color: #1a0e0a; padding: 2px 8px; border-radius: 20px; margin-left: 4px;
}
.unit-row {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; cursor: pointer;
  border: 1px solid transparent;
}
.unit-row:hover { background: var(--bg-3); border-color: var(--border); }
.unit-badge { font-family: var(--mono); font-size: 11px; font-weight: 600; color: var(--text-dim); min-width: 28px; width: auto; flex-shrink: 0; }
.unit-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13.5px; }
.unit-chip { font-size: 10.5px; padding: 2px 7px; border-radius: 20px; border: 1px solid var(--border-2); color: var(--text-dim); flex-shrink: 0; }
.unit-chip.mc { color: var(--purple); border-color: var(--purple); }
.unit-dots { font-size: 10px; color: var(--yellow); letter-spacing: 1px; flex-shrink: 0; width: 26px; }
.unit-status { width: 18px; text-align: center; flex-shrink: 0; }
.unit-status.done { color: var(--green); }
.unit-block-soon { font-size: 12px; color: var(--text-mut); margin: 6px 8px; font-style: italic; }

.mc-question { padding: 16px 18px; }
.mc-options { padding: 0 18px 8px; display: flex; flex-direction: column; gap: 8px; }
.mc-option {
  text-align: left; padding: 11px 14px; border: 1px solid var(--border-2); border-radius: 8px;
  background: var(--panel); color: var(--text); cursor: pointer; font-family: var(--sans); font-size: 13.5px;
  transition: .12s;
}
.mc-option:hover:not(:disabled) { border-color: var(--text-mut); background: var(--bg-3); }
.mc-option.correct { border-color: var(--green); background: rgba(78,201,138,.14); color: var(--green); }
.mc-option.wrong { border-color: var(--red); background: rgba(255,107,107,.12); color: #ffb3b3; }
.mc-option:disabled { cursor: default; }
.mc-feedback { padding: 12px 18px 18px; font-size: 13px; line-height: 1.55; color: var(--text-dim); border-top: 1px solid var(--border); }
.mc-feedback strong { color: var(--text); }

@media (max-width: 820px) {
  .exercise-bar { flex-wrap: wrap; }
  .ex-actions { width: 100%; }
  .ex-actions .btn { flex: 1; }
}

/* scrollbars discretas */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #2a3342; border-radius: 6px; border: 2px solid var(--panel); }
::-webkit-scrollbar-thumb:hover { background: #3a4658; }