:root {
  color-scheme: light;
  --bg: #f3f5f7;
  --surface: #ffffff;
  --surface-muted: #f8fafb;
  --border: #d9e1e7;
  --border-strong: #bfccd8;
  --text: #12202f;
  --text-muted: #4f6173;
  --primary: #1f6feb;
  --primary-hover: #175fcc;
  --danger: #c24141;
  --danger-hover: #a43535;
  --ok: #2f7d4f;
  --shadow: 0 8px 24px rgba(12, 23, 36, 0.08);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--surface);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0f141b;
    --surface: #171e27;
    --surface-muted: #1d2631;
    --border: #2a3643;
    --border-strong: #3a4b5e;
    --text: #e8edf2;
    --text-muted: #a8b4c0;
    --primary: #5c9dff;
    --primary-hover: #77adff;
    --danger: #ef6a6a;
    --danger-hover: #f48b8b;
    --ok: #6dc08d;
    --shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Inter", "Noto Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  padding-bottom: 4.75rem;
}

.container {
  width: min(1300px, 100% - 2rem);
  margin: 2rem auto 2.5rem;
}

.site-footer {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(1300px, calc(100% - 2rem));
  padding: 0.65rem 1.25rem;
  border-top: none;
  background: var(--bg);
  box-shadow: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.86rem;
  z-index: 20;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.footer-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.footer-links a:hover {
  text-decoration: underline;
}

.page-header {
  margin-bottom: 1.2rem;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 1.9rem);
  letter-spacing: 0.2px;
}

.page-subtitle {
  margin: 0.45rem 0 0;
  color: var(--text-muted);
  font-size: 0.96rem;
}

.app-layout {
  display: grid;
  gap: 1rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.panel-title {
  margin: 0;
  font-size: 1.08rem;
}

.panel-subtitle {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(300px, 1.3fr) minmax(0, 1.62fr);
  align-items: start;
  gap: 1rem;
}

.left-column {
  min-width: 0;
}

.ia-panel {
  min-height: 100%;
  position: sticky;
  top: 1rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.card h2,
.card h3 {
  margin: 0 0 0.8rem;
  font-size: 1.02rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin: 0.55rem 0;
}

.row-grupos {
  flex-wrap: nowrap;
}

.row-grupos #grupoSelect {
  min-width: 120px;
}

.row-grupos #grupoNuevo {
  flex: 1 1 260px;
  min-width: 180px;
}

.row-grupos #btnCrearGrupo,
.row-grupos #btnEliminarGrupo {
  margin-left: auto;
}

.row-grupos #btnEliminarGrupo {
  margin-left: 0;
}

.row-instituciones {
  flex-wrap: nowrap;
}

.row-instituciones #institucionSelect {
  min-width: 120px;
}

.row-instituciones #institucionNueva {
  flex: 1 1 260px;
  min-width: 180px;
}

.row-instituciones #btnCrearInstitucion {
  margin-left: auto;
}

.row > label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.stack {
  display: grid;
  gap: 1rem;
}

input,
select,
button,
textarea {
  font: inherit;
  border-radius: var(--radius-sm);
}

input,
select,
textarea {
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: var(--text);
  padding: 0.6rem 0.72rem;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent);
}

textarea {
  width: 100%;
  min-height: 110px;
  resize: vertical;
}

button {
  border: 1px solid transparent;
  background: var(--primary);
  color: #fff;
  padding: 0.58rem 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease, opacity 120ms ease;
}

button:hover {
  background: var(--primary-hover);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-neutral {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-neutral:hover {
  background: color-mix(in srgb, var(--text) 8%, transparent);
}

#btnLogout {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border-strong));
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

#btnLogout:hover {
  background: color-mix(in srgb, var(--danger) 22%, transparent);
}

.btn-neutral.is-success {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 45%, var(--border-strong));
  background: color-mix(in srgb, var(--ok) 14%, transparent);
}

.btn-neutral.is-error {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border-strong));
  background: color-mix(in srgb, var(--danger) 14%, transparent);
}

.btn-generate {
  background: color-mix(in srgb, var(--ok) 18%, var(--surface));
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 45%, var(--border-strong));
}

.btn-generate:hover {
  background: color-mix(in srgb, var(--ok) 28%, var(--surface));
}

.btn-danger {
  background: var(--danger);
}

.btn-danger:hover {
  background: var(--danger-hover);
}

#pdfStatus {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#iaQuotaStatus {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ok);
}

#iaQuotaStatus[data-state="warning"] {
  color: #b57a00;
}

#iaQuotaStatus[data-state="empty"],
#iaQuotaStatus[data-state="error"] {
  color: var(--danger);
}

#pdfStatus[data-ok="true"] {
  color: var(--ok);
}

#loginError {
  color: var(--danger);
  font-weight: 600;
  min-height: 1.2em;
}

#entradasList {
  margin: 0.65rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

#entradasList li {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
}

#entradasList li button {
  background: transparent;
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
  padding: 0.38rem 0.64rem;
  white-space: nowrap;
}

#entradasList li button:hover {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

#iaOutput {
  white-space: pre-wrap;
  min-height: 280px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-muted);
  padding: 0.8rem;
}

@media (max-width: 980px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .ia-panel {
    position: static;
  }

  #iaOutput {
    min-height: 180px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(1100px, 100% - 1rem);
    margin-top: 1rem;
  }

  .card {
    padding: 0.82rem;
  }

  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .row > * {
    width: 100%;
  }

  .row-grupos {
    flex-wrap: wrap;
  }

  .row-grupos #btnCrearGrupo,
  .row-grupos #btnEliminarGrupo {
    margin-left: 0;
  }

  .row-instituciones {
    flex-wrap: wrap;
  }

  .row-instituciones #btnCrearInstitucion {
    margin-left: 0;
  }

  .toolbar > * {
    width: 100%;
  }

  .site-footer {
    width: calc(100% - 1rem);
    padding: 0.75rem 0.65rem;
  }

  .footer-links {
    justify-content: center;
  }
}