:root {
  --sidebar-width: 280px;
}

body { min-height: 100vh; background: var(--bs-tertiary-bg); }
a { text-decoration: none; }

.app-shell { display: flex; min-height: 100vh; }
.app-sidebar { width: var(--sidebar-width); flex: 0 0 var(--sidebar-width); background: var(--bs-body-bg); border-right: 1px solid var(--bs-border-color); padding: 1.25rem; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.app-main { flex: 1; min-width: 0; }
.app-header { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 2rem; background: var(--bs-body-bg); border-bottom: 1px solid var(--bs-border-color); position: sticky; top: 0; z-index: 2; }
.content { padding: 2rem; max-width: 1500px; }
.content.narrow { max-width: 950px; }
.search { flex: 1; max-width: 720px; }
.brand { display: flex; gap: .75rem; align-items: center; margin-bottom: 2rem; }
.brand-mark { width: 42px; height: 42px; border-radius: 12px; background: var(--bs-primary); color: #fff; display: grid; place-items: center; font-weight: 800; }
.brand span { display: block; color: var(--bs-secondary-color); font-size: .85rem; }
.nav-link { color: var(--bs-body-color); border-radius: .7rem; padding: .65rem .8rem; }
.nav-link:hover { background: var(--bs-secondary-bg); }

.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 2rem; }
.login-card { width: min(440px, 100%); background: var(--bs-body-bg); border: 1px solid var(--bs-border-color); border-radius: 1rem; padding: 2rem; box-shadow: 0 16px 50px rgba(0,0,0,.12); }

.page-head, .section-title { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.page-head h1 { margin: 0; }
.btn-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.card-panel { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color); border-radius: 1rem; padding: 1.25rem; box-shadow: 0 8px 30px rgba(0,0,0,.04); }
.card-panel h2 { font-size: 1.15rem; margin-bottom: 1rem; }
.stat-card { display: block; background: var(--bs-body-bg); border: 1px solid var(--bs-border-color); border-radius: 1rem; padding: 1rem; color: var(--bs-body-color); }
.stat-card span { color: var(--bs-secondary-color); display: block; font-size: .9rem; }
.stat-card strong { font-size: 2rem; }
.list-stack { display: grid; gap: .65rem; }
.row-card { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .9rem 1rem; border: 1px solid var(--bs-border-color); border-radius: .8rem; color: var(--bs-body-color); background: var(--bs-tertiary-bg); }
.row-card:hover { border-color: var(--bs-primary); }
.row-card small, .mini-link small { display: block; color: var(--bs-secondary-color); margin-top: .2rem; }
.mini-link { display: block; padding: .65rem 0; border-bottom: 1px solid var(--bs-border-color); color: var(--bs-body-color); }
.mini-link:last-child { border-bottom: 0; }
.info-list { display: grid; grid-template-columns: minmax(110px, 35%) 1fr; gap: .75rem 1rem; }
.info-list dt { color: var(--bs-secondary-color); font-weight: 500; }
.info-list dd { margin: 0; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.form-grid .full { grid-column: 1 / -1; }
.actions { display: flex; gap: .75rem; align-items: center; }
.big-textarea { min-height: 460px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.preline { white-space: pre-line; }
.technical-doc { font-size: 1.05rem; }
.markdown-body h1 { font-size: 1.6rem; margin-top: 1.5rem; }
.markdown-body h2 { font-size: 1.3rem; margin-top: 1.25rem; padding-bottom: .25rem; border-bottom: 1px solid var(--bs-border-color); }
.markdown-body h3 { font-size: 1.1rem; margin-top: 1rem; }
.markdown-copy { min-height: 70vh; }
.attachment-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .75rem 0; border-bottom: 1px solid var(--bs-border-color); }
.attachment-row:last-child { border-bottom: 0; }
.attachment-row small { display: block; color: var(--bs-secondary-color); }
.status-badge { text-transform: none; }
.status-recibido { background: #6c757d; }
.status-diagnosticando { background: #0d6efd; }
.status-pendiente_cliente { background: #fd7e14; }
.status-reparando { background: #6f42c1; }
.status-listo { background: #198754; }
.status-entregado { background: #20c997; }
.status-cancelado { background: #dc3545; }

[data-bs-theme="dark"] body { background: #0e1116; }
[data-bs-theme="dark"] .app-sidebar,
[data-bs-theme="dark"] .app-header,
[data-bs-theme="dark"] .card-panel,
[data-bs-theme="dark"] .stat-card,
[data-bs-theme="dark"] .login-card { background: #151922; }
[data-bs-theme="dark"] .row-card { background: #11151d; }

@media (max-width: 900px) {
  .app-shell { display: block; }
  .app-sidebar { position: relative; width: 100%; height: auto; border-right: 0; border-bottom: 1px solid var(--bs-border-color); }
  .app-header { position: relative; height: auto; padding: 1rem; flex-wrap: wrap; }
  .content { padding: 1rem; }
  .form-grid { grid-template-columns: 1fr; }
  .page-head { align-items: flex-start; flex-direction: column; }
}