:root {
  --color-bg: #f0f2f5;
  --color-surface: #ffffff;
  --color-text: #1a1d1f;
  --color-text-muted: #6b7177;
  --color-border: #d8dbde;
  --color-sidebar: #1a1d1f;
  --color-sidebar-text: #ffffff;
  --color-sidebar-muted: #9ca3af;
  --color-sidebar-hover: #2d3139;
  --color-active: #1f7a4d;
  --color-active-bg: #e6f4ec;
  --color-pending: #b5740a;
  --color-pending-bg: #fbf0dd;
  --color-overdue: #b3261e;
  --color-overdue-bg: #fbe9e7;
  --color-closed: #5a5e63;
  --color-closed-bg: #ececee;
  --font-display: -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-data: ui-monospace, "SF Mono", Consolas, monospace;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --radius: 8px;
  --touch-target: 44px;
  --sidebar-width: 220px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-display);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   AUTH SCREEN
   ========================================================= */
#auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: var(--color-sidebar);
}

.auth-card {
  background: var(--color-surface);
  border-radius: 12px;
  padding: var(--space-xl);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}

.auth-card h1 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: var(--space-xs);
  letter-spacing: -0.02em;
}

.auth-card p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: var(--space-lg);
}

/* =========================================================
   APP SHELL — MOBILE FIRST
   ========================================================= */
#app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar — oculta en móvil, visible en PC */
.app-sidebar {
  display: none;
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  color: var(--color-sidebar-text);
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

/* Forzar sidebar oculto en móvil aunque JS lo toque */
@media (max-width: 767px) {
  .app-sidebar { display: none !important; }
}

.sidebar-header {
  padding: var(--space-lg) var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.sidebar-role {
  font-size: 11px;
  color: var(--color-sidebar-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-sm) 0;
  overflow-y: auto;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  color: var(--color-sidebar-muted);
  font-size: 14px;
  cursor: pointer;
  border-radius: 6px;
  margin: 2px var(--space-sm);
  transition: background 0.15s, color 0.15s;
}

.sidebar-nav-item:hover, .sidebar-nav-item.active {
  background: var(--color-sidebar-hover);
  color: var(--color-sidebar-text);
}

.sidebar-footer {
  padding: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-footer button {
  width: 100%;
  background: rgba(255,255,255,0.08);
  color: var(--color-sidebar-text);
  border: none;
  border-radius: var(--radius);
  padding: 10px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.sidebar-footer button:hover { background: rgba(255,255,255,0.14); }

/* Main content */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header móvil */
.app-header {
  padding: 10px var(--space-md);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  gap: 8px;
}

.app-header h1 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  flex: 1;
}

/* Íconos del header */
.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.hdr-icon-btn {
  position: relative;
  width: 38px; height: 38px;
  border: none; border-radius: 10px;
  background: transparent;
  font-size: 18px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
  min-height: unset; width: 38px; padding: 0;
  color: var(--color-text);
}
.hdr-icon-btn:hover { background: var(--color-bg); }
.hdr-icon-btn:active { background: var(--color-border); }

.hdr-badge {
  display: none;
  position: absolute; top: 2px; right: 2px;
  background: #ef4444; color: #fff;
  font-size: 9px; font-weight: 800;
  min-width: 16px; height: 16px; border-radius: 8px;
  align-items: center; justify-content: center; padding: 0 3px;
  border: 1.5px solid #fff;
}
.hdr-badge.show { display: flex; }

/* Menú config */
.hdr-config-wrap { position: relative; }

.hdr-config-menu {
  display: none;
  position: absolute; top: calc(100% + 8px); right: 0;
  background: #fff; border: 1px solid var(--color-border);
  border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.12);
  min-width: 200px; overflow: hidden; z-index: 200;
}
.hdr-config-menu.open { display: block; }

.hdr-menu-item {
  width: 100%; padding: 12px 16px; border: none;
  background: transparent; text-align: left;
  font-family: inherit; font-size: 14px; font-weight: 500;
  color: var(--color-text); cursor: pointer;
  min-height: unset; border-radius: 0;
  display: flex; align-items: center; gap: 10px;
  transition: background .1s;
}
.hdr-menu-item:hover { background: var(--color-bg); }
.hdr-menu-item.hdr-menu-danger { color: var(--color-overdue); }
.hdr-menu-sep {
  height: 1px; background: var(--color-border); margin: 0 12px;
}

/* Modal cambio de contraseña */
.hdr-modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.45); z-index: 500;
  align-items: center; justify-content: center; padding: 16px;
}
.hdr-modal-overlay.open { display: flex; }
.hdr-modal {
  background: #fff; border-radius: 16px; padding: 24px;
  width: 100%; max-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.hdr-modal-title { font-size:17px; font-weight:800; margin-bottom:16px; color:#1a1d1f; }
.hdr-modal-field { margin-bottom:14px; }
.hdr-modal-label { display:block; font-size:12px; font-weight:700;
  color:#6b7177; text-transform:uppercase; letter-spacing:.05em; margin-bottom:6px; }
.hdr-modal-input { width:100%; padding:10px 13px; border:1.5px solid #d1d5db;
  border-radius:8px; font-family:inherit; font-size:15px; color:#1a1d1f; min-height:unset; }
.hdr-modal-input:focus { border-color:#1a1d1f; outline:none; }
.hdr-modal-error { color:#dc2626; font-size:13px; margin-top:8px; display:none; }
.hdr-modal-actions { display:flex; gap:10px; margin-top:20px; }
.hdr-modal-cancel {
  flex:1; padding:11px; border:1.5px solid #d1d5db; border-radius:8px;
  background:#fff; font-family:inherit; font-size:14px; cursor:pointer; min-height:unset;
}
.hdr-modal-save {
  flex:2; padding:11px; border:none; border-radius:8px;
  background:#1a1d1f; color:#fff; font-family:inherit; font-size:14px;
  font-weight:700; cursor:pointer; min-height:unset;
}
.hdr-modal-save:disabled { opacity:.5; cursor:not-allowed; }

.app-content {
  flex: 1;
  padding: var(--space-lg);
  max-width: 800px;
  width: 100%;
}

/* =========================================================
   MOBILE: botón hamburguesa + drawer lateral
   ========================================================= */

/* Botón ☰ en el header móvil */
.hamburger-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: 22px;
  cursor: pointer;
  border-radius: var(--radius);
  min-height: unset;
  width: auto;
  padding: 6px 10px;
  transition: background 0.15s;
}
.hamburger-btn:active { background: var(--color-border); }

/* Overlay oscuro detrás del drawer */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 150;
}
.drawer-overlay.open { display: block; }

/* Drawer lateral */
.mobile-drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 260px;
  background: var(--color-sidebar);
  color: var(--color-sidebar-text);
  z-index: 160;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.mobile-drawer.open { transform: translateX(0); }

.drawer-header {
  padding: var(--space-lg) var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.drawer-title-wrap { flex: 1; }
.drawer-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-sidebar-text);
}
.drawer-role {
  font-size: 11px;
  color: var(--color-sidebar-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}
.drawer-close {
  background: transparent;
  border: none;
  color: var(--color-sidebar-muted);
  font-size: 24px;
  cursor: pointer;
  min-height: unset;
  width: auto;
  padding: 4px 8px;
  line-height: 1;
  border-radius: 6px;
}
.drawer-close:active { background: rgba(255,255,255,0.1); }

.drawer-nav {
  flex: 1;
  padding: var(--space-sm) 0;
  overflow-y: auto;
}
.drawer-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 13px var(--space-md);
  color: #d1d5db;
  font-size: 15px;
  cursor: pointer;
  border-radius: 6px;
  margin: 2px var(--space-sm);
  transition: background 0.15s, color 0.15s;
  min-height: var(--touch-target);
}
.drawer-nav-item.active,
.drawer-nav-item:active {
  background: var(--color-sidebar-hover);
  color: #ffffff;
}

.drawer-footer {
  padding: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.drawer-footer button {
  width: 100%;
  background: rgba(255,255,255,0.08);
  color: var(--color-sidebar-text);
  border: none;
  border-radius: var(--radius);
  padding: 10px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  min-height: unset;
}
.drawer-footer button:hover { background: rgba(255,255,255,0.14); }

/* =========================================================
   TOPBAR PC — barra superior con íconos acceso rápido
   ========================================================= */
.app-topbar {
  display: none; /* solo PC */
}

@media (min-width: 768px) {
  .app-sidebar  { display: flex; }
  .app-main     { margin-left: var(--sidebar-width); margin-top: 52px; }
  .app-header   { display: none; }
  .app-content  { padding: var(--space-xl); max-width: 900px; }
  .hamburger-btn  { display: none; }
  .drawer-overlay { display: none !important; }
  .mobile-drawer  { display: none !important; }

  /* Topbar visible en PC */
  .app-topbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: 52px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 var(--space-lg);
    z-index: 90;
    gap: 4px;
  }

  .grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
  .grid-span-2 { grid-column: 1 / -1; }
}

/* =========================================================
   FORMS
   ========================================================= */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
}

input, select, textarea {
  font: inherit;
  font-size: 16px;
  padding: 12px var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: var(--touch-target);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--color-active);
  outline-offset: 1px;
  border-color: var(--color-active);
}

button {
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  padding: 12px var(--space-lg);
  border: none;
  border-radius: var(--radius);
  min-height: var(--touch-target);
  cursor: pointer;
  background: var(--color-text);
  color: var(--color-surface);
  width: 100%;
  transition: opacity 0.15s;
}

button:active { opacity: 0.85; }
button.secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
button.danger { background: var(--color-overdue); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.error-message {
  color: var(--color-overdue);
  font-size: 13px;
  padding: var(--space-sm) 0;
}

/* =========================================================
   CARDS Y BADGES
   ========================================================= */
.status-badge {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-data);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.status-badge.active  { background: var(--color-active-bg);  color: var(--color-active); }
.status-badge.pending { background: var(--color-pending-bg); color: var(--color-pending); }
.status-badge.overdue { background: var(--color-overdue-bg); color: var(--color-overdue); }
.status-badge.closed  { background: var(--color-closed-bg);  color: var(--color-closed); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
  transition: box-shadow 0.15s;
}

.card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.06); }

.card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.card-title { font-weight: 700; font-size: 15px; }
.card-meta  { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }

.section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  margin-top: var(--space-lg);
}

.section-title:first-child { margin-top: 0; }

.empty-state {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
}

.empty-state p { font-size: 14px; }

.btn-sm {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 13px;
  cursor: pointer;
  min-height: unset;
  width: auto;
  font-family: var(--font-display);
}

.btn-sm.btn-danger {
  background: var(--color-overdue-bg);
  color: var(--color-overdue);
  border: none;
}

.hidden { display: none !important; }

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