*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14px; }

/* ============ LAYOUT ============ */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  height: 100vh;
}
.sidebar {
  grid-area: sidebar;
  background: var(--primary);
  color: white;
  padding: 18px 14px;
  overflow-y: auto;
}
.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}
.sidebar .brand-logo {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: white;
  color: var(--primary);
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 15px;
}
.sidebar .brand small { display: block; font-weight: 400; font-size: 11px; color: rgba(255,255,255,.7); }
.sidebar nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.85);
  font-weight: 500;
  text-decoration: none;
  transition: background .15s;
}
.sidebar nav a:hover { background: rgba(255,255,255,.08); text-decoration: none; }
.sidebar nav a.active { background: rgba(255,255,255,.15); color: white; }
.sidebar nav a .icon { width: 18px; text-align: center; opacity: .9; }
.sidebar .nav-section { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: rgba(255,255,255,.5); margin: 18px 12px 6px; }

.topbar {
  grid-area: topbar;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
}
.topbar .breadcrumb { color: var(--text-muted); font-size: 13px; }
.topbar .breadcrumb strong { color: var(--text); }
.topbar .user-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 12px 6px 6px;
  border-radius: 100px;
  background: var(--surface-alt);
}
.topbar .user-chip .avatar {
  width: 30px; height: 30px;
  border-radius: 100%;
  background: var(--primary);
  color: white;
  display: grid; place-items: center;
  font-weight: 600; font-size: 12px;
}
.topbar .user-chip .role { font-size: 11px; color: var(--text-muted); }
.topbar .logout-btn { margin-left: 10px; }

main {
  grid-area: main;
  overflow-y: auto;
  padding: 28px;
}
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.page-header h1 { font-size: 22px; margin: 0; }
.page-header .subtitle { color: var(--text-muted); font-size: 13px; margin-top: 2px; }

/* ============ COMPONENTS ============ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: 16px; }

.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.stat .label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .6px; }
.stat .value { font-size: 26px; font-weight: 700; margin-top: 6px; color: var(--primary); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 500;
  font-size: 14px;
  background: var(--surface-alt);
  color: var(--text);
  transition: all .15s;
}
.btn:hover { background: var(--border); }
.btn.primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-light); }
.btn.success { background: var(--success); color: white; border-color: var(--success); }
.btn.danger { background: var(--danger); color: white; border-color: var(--danger); }
.btn.danger:hover { opacity: .9; }
.btn.ghost { background: transparent; border-color: var(--border); }
.btn.sm { padding: 6px 10px; font-size: 12px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.input, .select, textarea.input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: white;
  color: var(--text);
  transition: border-color .15s;
}
.input:focus, .select:focus, textarea.input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px var(--primary-bg);
}
textarea.input { min-height: 80px; resize: vertical; }

label.field { display: block; margin-bottom: 12px; }
label.field .label { display: block; font-weight: 500; font-size: 13px; margin-bottom: 4px; color: var(--text); }
label.field .hint { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
label.field.required .label::after { content: " *"; color: var(--danger); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

/* table */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.table th {
  text-align: left; padding: 11px 12px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .6px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
}
table.table td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.table tr:hover td { background: var(--surface-alt); }
table.table tr:last-child td { border-bottom: none; }
.actions-cell { white-space: nowrap; }
.actions-cell .btn { margin-right: 4px; }

/* chips & badges */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
  margin: 2px;
}
.chip.removable { padding-right: 6px; gap: 4px; }
.chip .x { cursor: pointer; color: var(--text-muted); font-size: 14px; line-height: 1; }
.chip.primary { background: var(--primary-bg); color: var(--primary); border-color: var(--primary-bg); }
.chip.success { background: var(--success-bg); color: var(--success); border-color: var(--success-bg); }
.chip.warning { background: var(--warning-bg); color: var(--warning); border-color: var(--warning-bg); }
.chip.danger { background: var(--danger-bg); color: var(--danger); border-color: var(--danger-bg); }
.chip.info { background: var(--info-bg); color: var(--info); border-color: var(--info-bg); }
.chip.lg { padding: 5px 14px; font-size: 12px; }
.chip-toggle { cursor: pointer; user-select: none; }
.chip-toggle.on { background: var(--primary); color: white; border-color: var(--primary); }

.badge-state-activo { background: var(--success-bg); color: var(--success); }
.badge-state-pausado { background: var(--warning-bg); color: var(--warning); }
.badge-state-baja { background: var(--danger-bg); color: var(--danger); }
.badge-state-archived { background: var(--surface-alt); color: var(--text-muted); }

/* filter bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.filter-bar .search-box { flex: 1; min-width: 200px; max-width: 360px; }
.filter-bar .filter-group { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.filter-bar label.inline { font-size: 12px; color: var(--text-muted); }

/* tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tabs .tab {
  padding: 10px 18px;
  cursor: pointer;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs .tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* stepper wizard */
.stepper { display: flex; align-items: center; gap: 0; margin: 0 0 26px; }
.stepper .step {
  flex: 1;
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
}
.stepper .step:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.stepper .step:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.stepper .step:not(:last-child) { border-right: none; }
.stepper .step .num {
  width: 26px; height: 26px;
  border-radius: 100%;
  background: var(--border-strong);
  color: white;
  display: grid; place-items: center;
  font-weight: 600; font-size: 12px;
}
.stepper .step.active { background: var(--primary-bg); border-color: var(--primary-light); }
.stepper .step.active .num { background: var(--primary); }
.stepper .step.done .num { background: var(--success); }
.stepper .step .label { font-weight: 500; font-size: 13px; }

/* drop zone */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  background: var(--surface-alt);
  cursor: pointer;
  transition: all .15s;
}
.dropzone:hover, .dropzone.over { border-color: var(--primary); background: var(--primary-bg); }
.dropzone .big { font-size: 16px; font-weight: 500; color: var(--text); margin-bottom: 4px; }
.dropzone .small { font-size: 12px; color: var(--text-muted); }

/* modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .5);
  display: grid; place-items: center;
  z-index: 100;
  padding: 20px;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal.lg { max-width: 880px; }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0; font-size: 17px; }
.modal-body { padding: 22px; }
.modal-foot {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 14px 22px;
  border-top: 1px solid var(--border);
}

/* alerts */
.alert {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-size: 13px;
}
.alert.info { background: var(--info-bg); color: var(--info); }
.alert.success { background: var(--success-bg); color: var(--success); }
.alert.error { background: var(--danger-bg); color: var(--danger); }
.alert.warning { background: var(--warning-bg); color: var(--warning); }

.empty {
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
}

/* login */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  padding: 20px;
}
.login-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}
.login-card .brand {
  text-align: center;
  margin-bottom: 22px;
}
.login-card .brand-logo {
  width: 56px; height: 56px;
  margin: 0 auto 14px;
  border-radius: var(--radius);
  background: var(--primary);
  color: white;
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 20px;
}
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card .subtitle { text-align: center; color: var(--text-muted); font-size: 13px; }

.row { display: flex; gap: 10px; align-items: center; }
.row.between { justify-content: space-between; }
.row.gap-sm { gap: 6px; }
.col { display: flex; flex-direction: column; gap: 10px; }
.muted { color: var(--text-muted); font-size: 12px; }
.center { text-align: center; }
.mb-0 { margin-bottom: 0 !important; }
.mt-md { margin-top: 16px; }
.hidden { display: none !important; }
.spacer { flex: 1; }

/* ========== RESPONSIVE / MOBILE ========== */
@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-h) 1fr;
    grid-template-areas: "topbar" "main";
  }
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 80%;
    max-width: 280px;
    transform: translateX(-100%);
    transition: transform .25s;
    z-index: 50;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop {
    position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 49;
    display: none;
  }
  .sidebar.open + .sidebar-backdrop { display: block; }
  .menu-toggle { display: inline-flex; }
  main { padding: 18px; }
  .topbar { padding: 0 14px; }
  .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .stepper .step .label { display: none; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-bar .search-box { max-width: 100%; }
  table.table { font-size: 12px; }
  table.table td, table.table th { padding: 8px 6px; }
  .modal { max-width: 95vw; }
}
.menu-toggle { display: none; background: none; border: 0; font-size: 22px; color: var(--text); padding: 6px 10px; }