:root {
  --ink: #1d1d1f;
  --ink-2: #5f6368;
  --ink-3: #8a8f98;
  --line: #e4e4e1;
  --line-2: #efefec;
  --bg: #f6f6f3;
  --panel: #ffffff;
  --accent: #0b5394;
  --accent-ink: #ffffff;
  --we: #f1f1ee;
  --stage: #ececea;
  --danger: #c62828;
  --radius: 10px;
  --day: 26px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); font-size: 14px; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
code { background: var(--line-2); padding: 1px 5px; border-radius: 4px; }
.muted { color: var(--ink-2); }

/* ---------- Botones y campos ---------- */
.btn { font: inherit; font-size: 13px; display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: #c9c9c5; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn.ghost:hover { background: var(--line-2); }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: .5; cursor: default; }
input, select, textarea { font: inherit; font-size: 14px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 35%, transparent); border-color: var(--accent); }
label.f { display: grid; gap: 4px; font-size: 12px; color: var(--ink-2); }
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); }
.check input { width: auto; }
.stack { display: grid; gap: 10px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.error { color: var(--danger); font-size: 13px; margin: 0; }
.warn { background: #fff4e5; border: 1px solid #ffd8a8; padding: 10px 12px; border-radius: 8px; font-size: 13px; }

/* ---------- Login / instalación ---------- */
body.auth { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.auth-card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 28px; width: min(360px, 100%); }
.auth-card.wide { width: min(460px, 100%); }
.auth-card h1 { font-size: 18px; margin: 0 0 14px; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 12px; display: grid; gap: 8px; margin: 0; }
legend { font-size: 12px; color: var(--ink-2); padding: 0 4px; }

/* ---------- Estructura app ---------- */
.top { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 12px; padding: 10px 20px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { font-weight: 650; letter-spacing: -.01em; text-decoration: none; color: var(--ink); }
.top .who { color: var(--ink-2); font-size: 13px; }
main.page { padding: 24px 20px 60px; max-width: 1400px; margin: 0 auto; }
.page-h { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-h h2 { margin: 0; font-size: 22px; letter-spacing: -.02em; }
.status { font-size: 12px; color: var(--ink-3); }

/* ---------- Lista de proyectos ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; display: grid; gap: 10px; cursor: pointer; transition: border-color .15s, box-shadow .15s; }
.card:hover { border-color: #cfcfca; box-shadow: 0 2px 10px rgba(0,0,0,.04); }
.card h3 { margin: 0; font-size: 16px; letter-spacing: -.01em; }
.card .meta { font-size: 13px; color: var(--ink-2); }
.card .stripe { display: flex; height: 6px; border-radius: 3px; overflow: hidden; background: var(--line-2); }
.card .stripe span { flex: 1; }
.card .foot { display: flex; align-items: center; gap: 6px; }
.pill { font-size: 11px; padding: 2px 8px; border-radius: 99px; background: var(--line-2); color: var(--ink-2); }
.pill.pub { background: #e3f2e8; color: #1b6b3a; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--ink-2); background: var(--panel); border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---------- Editor ---------- */
.ed-head { display: grid; gap: 10px; margin-bottom: 14px; }
.ed-title { font-size: 22px; font-weight: 650; letter-spacing: -.02em; border: 1px solid transparent; background: transparent; padding: 4px 8px; margin-left: -8px; }
.ed-title:hover { border-color: var(--line); }
.ed-client { border: 1px solid transparent; background: transparent; padding: 4px 8px; margin-left: -8px; color: var(--ink-2); width: auto; min-width: 240px; }
.ed-client:hover { border-color: var(--line); }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px; background: var(--panel); border: 1px solid var(--line); border-bottom: 0; border-radius: var(--radius) var(--radius) 0 0; }
.toolbar .hint { font-size: 12px; color: var(--ink-3); }
.publink { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.publink input { width: 260px; font-size: 12px; padding: 6px 8px; background: var(--line-2); }
.switch { position: relative; display: inline-flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; user-select: none; }
.switch input { appearance: none; width: 34px; height: 20px; border-radius: 99px; background: #d4d4d0; position: relative; padding: 0; border: 0; cursor: pointer; transition: background .15s; }
.switch input::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: left .15s; box-shadow: 0 1px 2px rgba(0,0,0,.2); }
.switch input:checked { background: #2e7d4f; }
.switch input:checked::after { left: 16px; }

/* ---------- Gantt (DHTMLX con estilo planilla) ---------- */
.gantt { background: var(--panel); border: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius); overflow: hidden; height: calc(100vh - 250px); min-height: 420px; }
.gantt.solo, .gantt.readonly { border-radius: var(--radius); height: auto; min-height: 0; }
.gantt .gantt_container { font-family: var(--font); font-size: 12.5px; border: 0; }
.gantt .gantt_grid_scale, .gantt .gantt_task_scale { background: var(--panel); color: var(--ink-2); border-bottom: 1px solid var(--line); }
.gantt .gantt_grid_head_cell { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-2); font-weight: 600; }
.gantt .gantt_grid_head_cell.gantt_grid_head_text { text-align: left; padding-left: 10px; }
.gantt .gantt_scale_line { border-top: 0; }
.gantt .gantt_scale_line:nth-child(2) .gantt_scale_cell { font-size: 10px; letter-spacing: .04em; font-weight: 600; }
.gantt .gantt_scale_line:nth-child(3) .gantt_scale_cell { font-size: 11px; }
.gantt .gantt_scale_cell { border-right: 1px solid var(--line-2); color: var(--ink-2); }
.gantt .gantt_scale_line:first-child .gantt_scale_cell { text-align: left; border-right: 1px solid var(--line); }
.gantt .mo { font-size: 11px; letter-spacing: .08em; font-weight: 600; color: var(--ink); padding-left: 8px; }
.gantt .gantt_scale_cell.we, .gantt .gantt_task_cell.we { background: var(--we); }
.gantt .gantt_scale_cell.td { background: var(--accent); color: #fff; }
.gantt .gantt_task_cell { border-right: 1px solid var(--line-2); }
.gantt .gantt_row, .gantt .gantt_task_row { border-bottom: 1px solid var(--line-2); }
.gantt .gantt_row.stage-row, .gantt .gantt_task_row.stage-row { background: var(--stage); }
.gantt .gantt_task_row.stage-row .gantt_task_cell.we { background: #e4e4e1; }
.gantt .gantt_grid_data .gantt_cell { color: var(--ink); }
.gantt .gantt_grid_data .gantt_cell:not(:first-child) { color: var(--ink-2); font-size: 11.5px; font-variant-numeric: tabular-nums; }
.gantt .gantt_tree_indent { width: 14px; }
.gantt .gantt_tree_icon.gantt_open, .gantt .gantt_tree_icon.gantt_close { width: 18px; }
.gantt .num { color: var(--ink-3); margin-right: 6px; font-variant-numeric: tabular-nums; }
.gantt .dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 8px; vertical-align: -1px; border: 1px solid rgba(0,0,0,.08); }
.gantt .gantt_row.gantt_selected, .gantt .gantt_task_row.gantt_selected { background: #eef4fb; }
.gantt:not(.readonly) .gantt_grid_data .gantt_row:hover { background: #fafaf7; cursor: pointer; }
.gantt:not(.readonly) .gantt_grid_data .gantt_row.stage-row:hover { background: #e6e6e3; }

/* Barras: tareas como bloques de color, etapas como línea, revisiones como ✕ */
.gantt .gantt_task_line { border-radius: 6px; border: 0; box-shadow: none; }
.gantt .gantt_task_line.bar .gantt_task_content { display: none; }
.gantt .gantt_task_line.gantt_selected { box-shadow: 0 0 0 2px var(--accent); }
.gantt .gantt_task_line.stage { height: 5px !important; margin-top: 8px; border-radius: 3px; }
.gantt .gantt_task_line.stage .gantt_task_content, .gantt .gantt_task_line.stage .gantt_task_progress_wrapper { display: none; }
.gantt .gantt_task_line.gantt_milestone { border: 0; }
.gantt .gantt_task_line.ms .gantt_task_content { font-weight: 800; font-size: 12px; text-align: center; overflow: visible; }
.gantt .gantt_task_progress { display: none; }
.gantt .gantt_marker.today { background: var(--accent); width: 2px; opacity: .6; }
.gantt .gantt_marker.today .gantt_marker_content { background: var(--accent); font-size: 11px; }
.gantt.readonly .gantt_task_line { cursor: default; }
.gantt_tooltip { font-family: var(--font); font-size: 12px; border-radius: 8px; border: 1px solid var(--line); box-shadow: 0 6px 20px rgba(0,0,0,.08); }

/* ---------- Modal ---------- */
.modal-bg { position: fixed; inset: 0; background: rgba(20,20,20,.28); z-index: 50; display: grid; place-items: center; padding: 16px; }
.modal { background: var(--panel); border-radius: 14px; width: min(480px, 100%); max-height: calc(100vh - 32px); overflow: auto; box-shadow: 0 20px 60px rgba(0,0,0,.18); }
.modal header { display: flex; align-items: center; padding: 16px 18px 6px; }
.modal header h3 { margin: 0; font-size: 16px; flex: 1; }
.modal .body { padding: 10px 18px; display: grid; gap: 12px; }
.modal footer { display: flex; gap: 8px; padding: 12px 18px 16px; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { font: inherit; font-size: 13px; padding: 6px 12px; border: 0; background: #fff; cursor: pointer; color: var(--ink-2); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--ink); color: #fff; }
.swatches { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.swatches button { width: 26px; height: 26px; border-radius: 6px; border: 1px solid rgba(0,0,0,.1); cursor: pointer; padding: 0; }
.swatches button.on { outline: 2px solid var(--ink); outline-offset: 2px; }
.swatches input[type=color] { width: 34px; height: 28px; padding: 2px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.users li { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--line-2); }
.users { list-style: none; padding: 0; margin: 0; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 9px 14px; border-radius: 8px; font-size: 13px; z-index: 60; }

/* ---------- Vista pública ---------- */
.pub-head { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; margin-bottom: 16px; }
.pub-head .eyebrow { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 4px; }
.pub-head h1 { margin: 0; font-size: 28px; letter-spacing: -.02em; }
.pub-head .meta { color: var(--ink-2); margin-top: 6px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 0 0 14px; font-size: 12.5px; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; border: 1px solid rgba(0,0,0,.08); }
.legend .x { font-style: normal; font-weight: 700; width: auto; height: auto; border: 0; color: var(--ink); }
.pub-foot { margin-top: 14px; font-size: 12px; color: var(--ink-3); }

@media (max-width: 720px) {
  main.page { padding: 16px 16px 40px; }
  .top { padding: 10px 16px; }
  .publink input { width: 160px; }
}

@media print {
  @page { size: landscape; margin: 10mm; }
  :root { --day: 18px; }
  body { background: #fff; font-size: 11px; }
  .top, .toolbar, .no-print { display: none !important; }
  main.page { padding: 0; max-width: none; }
  .gantt { border: 0; height: auto; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}