/* ===== SafeTaskApp - Estilos principales ===== */
:root {
  --font-sans: 'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --color-bg: #f6f5f3;
  --color-surface: #ffffff;
  --color-border: #e5e2de;
  --color-text: #1c1917;
  --color-text-muted: #78716c;
  --color-primary: #0d6b5c;
  --color-primary-hover: #0a5549;
  --color-primary-light: #e8f5f3;
  --color-accent: #c2410c;
  --color-accent-light: #fff4ed;
  --color-success: #15803d;
  --color-success-bg: #dcfce7;
  --color-danger: #b91c1c;
  --color-danger-bg: #fee2e2;
  --color-warning: #a16207;
  --color-warning-bg: #fef9c3;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 28px rgba(0,0,0,0.1);
  --radius: 10px;
  --radius-sm: 6px;
  --sidebar-width: 240px;
  --header-height: 56px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

#app {
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* ===== Vistas de autenticación ===== */
.auth-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(145deg, #0d6b5c 0%, #0a5549 50%, #083d34 100%);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
}

.auth-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.logo-icon {
  display: inline-block;
  width: 48px;
  height: 48px;
  line-height: 48px;
  font-size: 1.5rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
}

.auth-brand h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.auth-brand p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.auth-form .form-group {
  margin-bottom: 1.25rem;
}

.auth-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.auth-form input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.auth-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 107, 92, 0.15);
}

.auth-form input::placeholder {
  color: var(--color-text-muted);
}

.login-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  padding: 0.5rem 0;
}

.login-hint code {
  font-family: var(--font-mono);
  background: var(--color-primary-light);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.auth-link-recover {
  margin: 0 0 1rem;
  font-size: 0.875rem;
}

.auth-link-recover a {
  color: var(--color-primary);
  text-decoration: none;
}

.auth-link-recover a:hover {
  text-decoration: underline;
}

.form-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0 0 1rem;
}

.form-hint.success {
  color: var(--color-success);
}

.field-error {
  display: block;
  font-size: 0.8rem;
  color: var(--color-danger);
  margin-top: 0.35rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.05s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

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

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.btn-block {
  width: 100%;
  margin-top: 0.5rem;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.875rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.btn-icon span {
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.auth-footer a {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
}

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

/* ===== Dashboard layout ===== */
#view-dashboard {
  display: flex;
  flex-wrap: wrap;
  min-height: 100vh;
}

.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.notifications-trigger {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--color-bg);
}

.notifications-trigger:hover {
  background: var(--color-border);
}

.notifications-trigger .icon {
  font-size: 1.2rem;
}

.notifications-trigger .badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--color-accent);
  color: #fff;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.user-email {
  font-size: 0.875rem;
  color: var(--color-text);
}

.user-role {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-weight: 500;
}

.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: 1rem 0;
  z-index: 50;
  transition: transform 0.2s, box-shadow 0.2s;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

.nav-link.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.nav-link .icon {
  font-size: 1.1rem;
}

.nav-link .badge {
  margin-left: auto;
  min-width: 20px;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-accent);
  color: #fff;
  border-radius: 10px;
}

.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: 1.5rem;
  min-height: calc(100vh - var(--header-height));
}

/* ===== Secciones ===== */
.section {
  display: none;
  max-width: 900px;
}

.section.active {
  display: block;
}

.section-header {
  margin-bottom: 1.5rem;
}

.section-header h1 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.section-description {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.section-header-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tasks-summary {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.input-search {
  flex: 1;
  min-width: 180px;
  padding: 0.5rem 0.85rem;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.input-search:focus {
  outline: none;
  border-color: var(--color-primary);
}

.select-filter {
  padding: 0.5rem 0.85rem;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

/* ===== Lista de tareas ===== */
.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.task-item:hover {
  box-shadow: var(--shadow-md);
  border-color: #d6d3d0;
}

.task-item.completed .task-title {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.task-item.completed .task-meta {
  opacity: 0.8;
}

.task-checkbox {
  width: 22px;
  height: 22px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.task-body {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 0.25rem;
  word-break: break-word;
}

.task-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
  line-height: 1.4;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.task-due {
  color: var(--color-accent);
  font-weight: 500;
}

.task-due.overdue {
  color: var(--color-danger);
}

.priority-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.priority-high {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.priority-medium {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.priority-low {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.task-actions {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
}

.task-actions .btn {
  padding: 0.4rem;
  min-width: 36px;
}

.task-title-link {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.task-title-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

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

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

/* ===== Vista detalle de tarea ===== */
.task-detail-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
}

.task-detail-title {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
}

.task-detail-title.completed {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.task-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.task-detail-description {
  margin: 0 0 1.5rem;
  color: var(--color-text-muted);
  white-space: pre-wrap;
  line-height: 1.5;
}

.task-detail-description:empty::before {
  content: 'Sin descripción';
  font-style: italic;
  color: var(--color-text-muted);
}

.task-detail-status {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.task-detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ===== Formulario perfil ===== */
.profile-form .form-group {
  margin-bottom: 1.25rem;
}

.profile-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.profile-form input {
  width: 100%;
  max-width: 400px;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.profile-form input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.input-readonly {
  background: var(--color-bg) !important;
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.form-fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.form-fieldset legend {
  padding: 0 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--color-text-muted);
}

.empty-state a {
  color: var(--color-primary);
  font-weight: 500;
}

/* ===== Formulario de tarea ===== */
.task-form .form-group {
  margin-bottom: 1.25rem;
}

.task-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.task-form input,
.task-form textarea,
.task-form select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.task-form input:focus,
.task-form textarea:focus,
.task-form select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 107, 92, 0.15);
}

.task-form textarea {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ===== Panel de notificaciones ===== */
.notifications-panel {
  position: fixed;
  top: var(--header-height);
  right: 0;
  width: 360px;
  max-width: 100%;
  height: calc(100vh - var(--header-height));
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  box-shadow: -4px 0 20px rgba(0,0,0,0.08);
  z-index: 90;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.panel-header h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.close-panel {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
}

.panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

.notification-item {
  padding: 0.85rem;
  margin-bottom: 0.5rem;
  background: var(--color-warning-bg);
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.notification-item.danger {
  background: var(--color-danger-bg);
  border-left-color: var(--color-danger);
}

/* ===== Sección alertas ===== */
.alerts-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.alert-card {
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}

.alert-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
}

.alert-card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ===== Usuarios (admin) ===== */
.info-box {
  padding: 1rem;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.users-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.users-list li {
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .app-main {
    margin-left: 0;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .header-right .user-email {
    display: none;
  }

  .notifications-panel {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 1.5rem;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
}