/* FIACA · estilo editorial claro (referencia: docs/referencia-visual.html) */

:root {
  --surface: #faf9f6;
  --surface-low: #f4f3f1;
  --surface-container: #efeeeb;
  --surface-high: #e9e8e5;
  --surface-highest: #e3e2e0;
  --surface-lowest: #ffffff;
  --on-surface: #1a1c1a;
  --on-surface-variant: #44474a;
  --outline: #75777a;
  --outline-variant: #c5c6ca;
  --primary: #070a0c;
  --primary-container: #1e2124;
  --on-primary: #ffffff;
  --coral: #fe6946;
  --coral-dark: #af3013;
  --coral-deep: #8b1a00;
  --coral-fixed: #ffdad2;
  --on-coral-fixed: #3d0600;
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --on-error-container: #93000a;
  --ok: #1f6b3a;
  --ok-container: #d9f0e0;

  --font-head: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius: 0.125rem;
  --radius-lg: 0.25rem;
  --radius-xl: 0.5rem;
  --radius-full: 0.75rem;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.12);

  --topbar-h: 4.25rem;
  --sidebar-w: 14rem;
}

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

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 22px;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

::selection { background: var(--coral-fixed); color: var(--on-coral-fixed); }

h1, h2, h3 { font-family: var(--font-head); font-weight: 600; letter-spacing: -0.01em; margin: 0; }

p { margin: 0; }

a { color: inherit; }

button, input, select, textarea { font: inherit; color: inherit; }

[hidden] { display: none !important; }

.muted { color: var(--on-surface-variant); }
.small { font-size: 13px; line-height: 18px; }

.skip-link {
  position: absolute; left: -999px; top: 0.5rem;
  background: var(--primary); color: var(--on-primary);
  padding: 0.5rem 0.75rem; border-radius: var(--radius-lg); z-index: 200;
}
.skip-link:focus { left: 0.5rem; }

:focus-visible { outline: 2px solid var(--coral-dark); outline-offset: 2px; }

/* ---------- Aviso global ---------- */
.notice {
  position: fixed; top: 0.75rem; left: 50%; transform: translateX(-50%);
  z-index: 150; max-width: min(92vw, 40rem);
  padding: 0.6rem 1rem; border-radius: var(--radius-xl);
  background: var(--primary-container); color: var(--on-primary);
  box-shadow: var(--shadow-xl); font-size: 14px; line-height: 20px;
}
.notice.is-error { background: var(--error); }
.notice.is-ok { background: var(--ok); }

/* ---------- Pantallas centradas ---------- */
.center-view {
  min-height: 100vh; display: grid; place-items: center; padding: 1.5rem;
}

.card {
  background: var(--surface-lowest);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}

.login-card { width: min(100%, 24rem); box-shadow: var(--shadow-md); }

.brand-label {
  font-size: 11px; line-height: 14px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--on-surface-variant);
}
.brand-title {
  font-size: 40px; line-height: 44px; text-transform: uppercase; color: var(--primary);
  margin: 0.25rem 0 0.25rem;
}
.login-card .field:first-of-type { margin-top: 1.5rem; }

/* ---------- Formularios ---------- */
.field { display: flex; flex-direction: column; gap: 0.3rem; margin-bottom: 1rem; }
.field label, .segmented legend {
  font-size: 12px; line-height: 16px; font-weight: 600; color: var(--on-surface-variant);
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  background: var(--surface-lowest);
}
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  outline: 2px solid var(--coral-dark); outline-offset: 0; border-color: var(--coral-dark);
}
.field textarea { resize: vertical; min-height: 4.5rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.hint { margin-top: 0.25rem; }

.form-error {
  color: var(--on-error-container); background: var(--error-container);
  padding: 0.5rem 0.75rem; border-radius: var(--radius-lg);
  font-size: 13px; line-height: 18px; margin-bottom: 1rem;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid transparent; border-radius: var(--radius-lg);
  font-size: 14px; line-height: 18px; font-weight: 600;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background-color 120ms ease, color 120ms ease, box-shadow 120ms ease;
}
.btn:disabled { opacity: 0.55; cursor: default; }
.btn-primary { background: var(--coral-dark); color: var(--on-primary); }
.btn-primary:hover:not(:disabled) { background: var(--coral-deep); }
.btn-secondary { background: var(--surface-high); color: var(--primary); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-highest); }
.btn-ghost { background: transparent; color: var(--on-surface-variant); border-color: var(--outline-variant); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-container); color: var(--primary); }
.btn-coral { background: var(--coral-dark); color: var(--on-primary); }
.btn-coral:hover:not(:disabled) { background: var(--coral-deep); }
.btn-sm { padding: 0.35rem 0.7rem; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- Estructura de la app ---------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas: "top top" "side main";
  min-height: 100vh;
}

.topbar {
  grid-area: top;
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0 1.5rem;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
}
.topbar-brand { display: flex; flex-direction: column; line-height: 1; }
.topbar-title {
  font-family: var(--font-head); font-size: 26px; font-weight: 700;
  text-transform: uppercase; letter-spacing: -0.01em; color: var(--primary);
}
.topbar-sub {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--on-surface-variant); margin-top: 0.3rem;
}
.topbar-user { display: flex; align-items: center; gap: 0.75rem; }
.user-name { font-size: 14px; font-weight: 600; }

.sidebar {
  grid-area: side;
  background: var(--surface-low);
  padding: 1.25rem 0.75rem;
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow: auto;
}
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.15rem; }
.nav-link {
  display: block; padding: 0.55rem 0.85rem;
  border-radius: var(--radius-lg);
  font-size: 14px; font-weight: 600; text-decoration: none;
  color: var(--on-surface-variant);
  border-left: 3px solid transparent;
}
.nav-link:hover { background: var(--surface-container); color: var(--primary); }
.nav-link[aria-current="page"] {
  background: var(--surface-lowest); color: var(--primary);
  border-left-color: var(--coral); box-shadow: var(--shadow-sm);
}

.main { grid-area: main; padding: 2rem 2.5rem 4rem; max-width: 72rem; width: 100%; }

.view-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem;
  margin-bottom: 1.25rem; flex-wrap: wrap;
}
.view-title { font-size: 36px; line-height: 44px; color: var(--primary); }
.view-title:focus { outline: none; }
.view-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.section-status { min-height: 1.4rem; font-size: 13px; color: var(--on-surface-variant); margin-bottom: 0.75rem; }
.section-status.is-error { color: var(--on-error-container); }
.section-status .btn { margin-left: 0.5rem; vertical-align: middle; }

/* ---------- Barra de filtros ---------- */
.toolbar {
  display: flex; gap: 1rem; align-items: flex-end; flex-wrap: wrap;
  background: var(--surface-low); padding: 1rem; border-radius: var(--radius-xl);
  margin-bottom: 1rem;
}
.toolbar .field { margin-bottom: 0; min-width: 10rem; }
.toolbar .grow { flex: 1 1 14rem; }
.segmented { border: 0; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.segmented legend { padding: 0; margin-bottom: 0.3rem; }
.segmented label {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 13px; padding: 0.35rem 0.6rem; border-radius: var(--radius-lg);
  background: var(--surface-lowest); border: 1px solid var(--outline-variant); cursor: pointer;
}
.segmented { flex-direction: row; flex-wrap: wrap; }
.segmented legend { width: 100%; }
.segmented label:has(input:checked) { background: var(--primary-container); color: var(--on-primary); border-color: var(--primary-container); }

/* ---------- Tareas ---------- */
.task-list { display: grid; gap: 0.75rem; }

.task {
  position: relative;
  display: grid; grid-template-columns: auto 1fr; gap: 0.9rem;
  background: var(--surface-lowest); border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm); padding: 1rem 1.1rem 1rem 1.25rem; overflow: hidden;
}
.task::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--coral);
}
.task.is-done::before { background: var(--outline-variant); }
.task.is-unassigned::before { background: var(--primary); }
.task.is-overdue::before { background: var(--coral-dark); }

.task-check { display: flex; align-items: flex-start; padding-top: 0.2rem; }
.task-check input { width: 1.15rem; height: 1.15rem; accent-color: var(--coral-dark); cursor: pointer; margin: 0; }

.task-body { min-width: 0; }
.task-title { font-family: var(--font-head); font-size: 20px; line-height: 26px; font-weight: 500; color: var(--primary); }
.task.is-done .task-title { color: var(--on-surface-variant); text-decoration: line-through; }
.task-desc { color: var(--on-surface-variant); font-size: 13px; line-height: 18px; margin-top: 0.25rem; white-space: pre-wrap; overflow-wrap: anywhere; }

.task-meta { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.6rem; align-items: center; }
.tag {
  display: inline-flex; align-items: center; gap: 0.25rem;
  font-size: 11px; line-height: 14px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 0.2rem 0.5rem; border-radius: var(--radius);
  background: var(--surface-container); color: var(--on-surface);
}
.tag-project { background: var(--surface-high); color: var(--primary); }
.tag-due { background: var(--surface-container); }
.tag-overdue { background: var(--error-container); color: var(--on-error-container); }
.tag-priority { background: var(--coral-fixed); color: var(--coral-deep); }
.tag-open { background: var(--surface-highest); color: var(--primary); }
.tag-done { background: var(--ok-container); color: var(--ok); }
.tag-assignee { background: var(--surface-low); color: var(--on-surface-variant); text-transform: none; letter-spacing: 0; font-weight: 600; }
.tag-me { background: var(--primary-container); color: var(--on-primary); text-transform: none; letter-spacing: 0; }

.task-actions { display: flex; gap: 0.5rem; margin-top: 0.75rem; flex-wrap: wrap; }

/* ---------- Agenda ---------- */
.agenda-list { display: grid; gap: 1.25rem; }
.agenda-day { display: grid; gap: 0.5rem; }
.agenda-day-title {
  font-family: var(--font-head); font-size: 20px; line-height: 26px; font-weight: 500; color: var(--primary);
  display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap;
}
.agenda-day-title.is-overdue { color: var(--coral-dark); }
.agenda-day-count { font-family: var(--font-body); font-size: 12px; font-weight: 600; color: var(--on-surface-variant); }

/* ---------- Estados vacíos y pendientes ---------- */
.empty {
  background: var(--surface-low); border-radius: var(--radius-xl);
  padding: 2rem 1.5rem; text-align: center; color: var(--on-surface-variant);
}
.empty strong { display: block; font-family: var(--font-head); font-size: 20px; font-weight: 500; color: var(--primary); margin-bottom: 0.25rem; }

.pending-card { display: grid; gap: 0.75rem; max-width: 40rem; }
.pending-card h2 { font-size: 26px; line-height: 32px; font-weight: 500; color: var(--primary); }
.status-pill {
  display: inline-flex; align-items: center; gap: 0.4rem; width: fit-content;
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.3rem 0.65rem; border-radius: var(--radius);
  background: var(--surface-high); color: var(--on-surface-variant);
}
.status-pill.is-on { background: var(--ok-container); color: var(--ok); }
.status-pill.is-unknown { background: var(--error-container); color: var(--on-error-container); }
.status-pill::before { content: ""; width: 0.5rem; height: 0.5rem; border-radius: 50%; background: currentColor; }
.pending-card ul { margin: 0; padding-left: 1.2rem; color: var(--on-surface-variant); font-size: 14px; }

/* ---------- Modales ---------- */
.modal {
  border: 0; padding: 0; margin: auto;
  width: min(92vw, 30rem);
  background: var(--surface-lowest); color: var(--on-surface);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-xl);
}
.modal::backdrop { background: rgba(26, 28, 26, 0.45); }
.modal[open] { display: block; }
.modal-form { padding: 1.5rem; }
.modal-title { font-size: 26px; line-height: 32px; font-weight: 500; color: var(--primary); margin-bottom: 1.25rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 0.5rem; }

/* Respaldo si <dialog> no está soportado */
.modal.is-fallback-open {
  display: block; position: fixed; top: 10vh; left: 50%; transform: translateX(-50%); z-index: 120;
}
.modal-backdrop-fallback { position: fixed; inset: 0; background: rgba(26, 28, 26, 0.45); z-index: 110; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-h) auto 1fr;
    grid-template-areas: "top" "side" "main";
  }
  .sidebar {
    position: sticky; top: var(--topbar-h); height: auto;
    padding: 0.5rem 0.75rem; z-index: 40;
    border-bottom: 1px solid var(--outline-variant);
  }
  .nav-list { flex-direction: row; overflow-x: auto; gap: 0.25rem; }
  .nav-link { border-left: 0; border-bottom: 3px solid transparent; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
  .nav-link[aria-current="page"] { border-bottom-color: var(--coral); box-shadow: none; }
  .main { padding: 1.25rem 1rem 3rem; }
  .view-title { font-size: 28px; line-height: 34px; }
  .topbar { padding: 0 1rem; }
  .topbar-sub { display: none; }
  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .user-name { display: none; }
  .task { grid-template-columns: auto 1fr; padding-right: 0.9rem; }
  .toolbar .field { min-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}