diff --git a/spec/lib/tiny_admin/configure_spec.rb b/spec/lib/tiny_admin/configure_spec.rb
new file mode 100644
index 0000000..0cd07f1
--- /dev/null
+++ b/spec/lib/tiny_admin/configure_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require "dummy_rails_app"
+require "rails_helper"
+
+RSpec.describe "TinyAdmin.configure" do # rubocop:disable RSpec/DescribeClass
+  let(:settings) { TinyAdmin::Settings.instance }
+
+  around do |example|
+    saved = settings.instance_variable_get(:@options)&.deep_dup
+    saved_store = settings.instance_variable_get(:@store)
+    saved_loaded = settings.instance_variable_get(:@loaded)
+    example.run
+  ensure
+    settings.instance_variable_set(:@options, saved)
+    settings.instance_variable_set(:@store, saved_store)
+    settings.instance_variable_set(:@loaded, saved_loaded)
+  end
+
+  it "yields settings to the block" do
+    yielded = nil
+    TinyAdmin.configure { |s| yielded = s }
+    expect(yielded).to eq(settings)
+  end
+
+  it "allows setting options via the block" do
+    TinyAdmin.configure { |s| s.root_path = "/custom" }
+    expect(settings.root_path).to eq("/custom")
+  end
+
+  it "returns settings when no block is given" do
+    result = TinyAdmin.configure
+    expect(result).to eq(settings)
+  end
+end
diff --git a/spec/lib/tiny_admin/utils_prepare_page_spec.rb b/spec/lib/tiny_admin/utils_prepare_page_spec.rb
new file mode 100644
index 0000000..8b37ac7
--- /dev/null
+++ b/spec/lib/tiny_admin/utils_prepare_page_spec.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+require "dummy_rails_app"
+require "rails_helper"
+
+RSpec.describe TinyAdmin::Utils, "#prepare_page" do
+  let(:utils_instance) { Class.new { include TinyAdmin::Utils }.new }
+  let(:settings) { TinyAdmin::Settings.instance }
+
+  around do |example|
+    saved = settings.instance_variable_get(:@options)&.deep_dup
+    saved_store = settings.instance_variable_get(:@store)
+    saved_loaded = settings.instance_variable_get(:@loaded)
+    settings.load_settings
+    example.run
+  ensure
+    settings.instance_variable_set(:@options, saved)
+    settings.instance_variable_set(:@store, saved_store)
+    settings.instance_variable_set(:@loaded, saved_loaded)
+  end
+
+  it "returns an instance of the given page class" do
+    page = utils_instance.prepare_page(TinyAdmin::Views::Pages::Root)
+    expect(page).to be_a(TinyAdmin::Views::Pages::Root)
+  end
+
+  it "assigns head, flash, and navbar components", :aggregate_failures do
+    page = utils_instance.prepare_page(TinyAdmin::Views::Pages::Root)
+    expect(page.head_component).to be_a(TinyAdmin::Views::Components::Head)
+    expect(page.flash_component).to be_a(TinyAdmin::Views::Components::Flash)
+    expect(page.navbar_component).to be_a(TinyAdmin::Views::Components::Navbar)
+  end
+
+  it "sets the page title from attributes" do
+    page = utils_instance.prepare_page(TinyAdmin::Views::Pages::Root, attributes: { title: "My Title" })
+    expect(page.title).to eq("My Title")
+  end
+
+  it "sets params on the page" do
+    page = utils_instance.prepare_page(TinyAdmin::Views::Pages::Root, params: { "page" => "2" })
+    expect(page.params).to eq({ "page" => "2" })
+  end
+
+  it "passes no_menu option to hide navbar items" do
+    page = utils_instance.prepare_page(TinyAdmin::Views::Pages::Root, options: [:no_menu])
+    expect(page.navbar_component.items).to eq([])
+  end
+
+  it "yields the page to the block when given" do
+    yielded = nil
+    utils_instance.prepare_page(TinyAdmin::Views::Pages::Root) { |p| yielded = p }
+    expect(yielded).to be_a(TinyAdmin::Views::Pages::Root)
+  end
+
+  it "resolves widget class names from strings" do
+    widget_class = Class.new(Phlex::HTML) do
+      def view_template
+        plain "test"
+      end
+    end
+    stub_const("TestWidget", widget_class)
+    page = utils_instance.prepare_page(TinyAdmin::Views::Pages::Root, attributes: { widgets: ["TestWidget"] })
+    expect(page.widgets).to eq([TestWidget])
+  end
+end
diff --git a/spec/lib/tiny_admin/views/components/field_value_spec.rb b/spec/lib/tiny_admin/views/components/field_value_spec.rb
new file mode 100644
index 0000000..ada0cd3
--- /dev/null
+++ b/spec/lib/tiny_admin/views/components/field_value_spec.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require "dummy_rails_app"
+require "rails_helper"
+
+RSpec.describe TinyAdmin::Views::Components::FieldValue do
+  let(:settings) { TinyAdmin::Settings.instance }
+
+  before { settings.load_settings }
+
+  describe "with a basic field" do
+    let(:field) { TinyAdmin::Field.new(name: "title", type: :string, title: "Title", options: {}) }
+    let(:record) { double("record", id: 1) } # rubocop:disable RSpec/VerifiedDoubles
+
+    it "renders the translated value in a span", :aggregate_failures do
+      html = described_class.new(field, "Hello", record: record).call
+      expect(html).to include("Hello")
+      expect(html).to include("<span")
+    end
+  end
+
+  describe "with link_to option" do
+    let(:field) { TinyAdmin::Field.new(name: "author_id", type: :integer, title: "Author", options: { link_to: "authors" }) }
+    let(:record) { double("record", id: 1) } # rubocop:disable RSpec/VerifiedDoubles
+
+    it "wraps the value in a link", :aggregate_failures do
+      html = described_class.new(field, "42", record: record).call
+      expect(html).to include("<a")
+      expect(html).to include("authors")
+      expect(html).to include("42")
+    end
+  end
+
+  describe "with value_class option" do
+    let(:field) { TinyAdmin::Field.new(name: "status", type: :string, title: "Status", options: { options: ["value_class"] }) }
+    let(:record) { double("record", id: 1) } # rubocop:disable RSpec/VerifiedDoubles
+
+    it "adds value-based CSS class to the span" do
+      html = described_class.new(field, "active", record: record).call
+      expect(html).to include("value-active")
+    end
+  end
+end
diff --git a/spec/lib/tiny_admin/views/components/filters_form_spec.rb b/spec/lib/tiny_admin/views/components/filters_form_spec.rb
new file mode 100644
index 0000000..7abe563
--- /dev/null
+++ b/spec/lib/tiny_admin/views/components/filters_form_spec.rb
@@ -0,0 +1,90 @@
+# frozen_string_literal: true
+
+require "dummy_rails_app"
+require "rails_helper"
+
+RSpec.describe TinyAdmin::Views::Components::FiltersForm do
+  let(:component) { described_class.new }
+
+  before do
+    TinyAdmin::Settings.instance.load_settings
+    component.update_attributes(section_path: "/admin/posts", filters: filters)
+  end
+
+  describe "with a boolean filter" do
+    let(:field) { TinyAdmin::Field.new(name: "published", type: :boolean, title: "Published", options: {}) }
+    let(:filters) { { field => { filter: { type: :boolean }, value: "1" } } }
+
+    it "renders a select with true/false options", :aggregate_failures do
+      html = component.call
+      expect(html).to include("form-select")
+      expect(html).to include("true")
+      expect(html).to include("false")
+    end
+  end
+
+  describe "with a date filter" do
+    let(:field) { TinyAdmin::Field.new(name: "created_at", type: :date, title: "Created At", options: {}) }
+    let(:filters) { { field => { filter: { type: :date }, value: "2024-01-01" } } }
+
+    it "renders a date input", :aggregate_failures do
+      html = component.call
+      expect(html).to include('type="date"')
+      expect(html).to include("2024-01-01")
+    end
+  end
+
+  describe "with a datetime filter" do
+    let(:field) { TinyAdmin::Field.new(name: "updated_at", type: :datetime, title: "Updated At", options: {}) }
+    let(:filters) { { field => { filter: { type: :datetime }, value: "2024-01-01T12:00" } } }
+
+    it "renders a datetime-local input" do
+      html = component.call
+      expect(html).to include('type="datetime-local"')
+    end
+  end
+
+  describe "with an integer filter" do
+    let(:field) { TinyAdmin::Field.new(name: "age", type: :integer, title: "Age", options: {}) }
+    let(:filters) { { field => { filter: { type: :integer }, value: "25" } } }
+
+    it "renders a number input" do
+      html = component.call
+      expect(html).to include('type="number"')
+    end
+  end
+
+  describe "with a select filter" do
+    let(:field) { TinyAdmin::Field.new(name: "state", type: :select, title: "State", options: {}) }
+    let(:filters) { { field => { filter: { type: :select, values: %w[available unavailable] }, value: "available" } } }
+
+    it "renders a select with the provided values", :aggregate_failures do
+      html = component.call
+      expect(html).to include("form-select")
+      expect(html).to include("available")
+      expect(html).to include("unavailable")
+    end
+  end
+
+  describe "with a text filter (default)" do
+    let(:field) { TinyAdmin::Field.new(name: "title", type: :string, title: "Title", options: {}) }
+    let(:filters) { { field => { filter: {}, value: "hello" } } }
+
+    it "renders a text input", :aggregate_failures do
+      html = component.call
+      expect(html).to include('type="text"')
+      expect(html).to include("hello")
+    end
+  end
+
+  describe "action buttons" do
+    let(:field) { TinyAdmin::Field.new(name: "title", type: :string, title: "Title", options: {}) }
+    let(:filters) { { field => { filter: {}, value: "" } } }
+
+    it "renders Clear and Filter buttons", :aggregate_failures do
+      html = component.call
+      expect(html).to include("Clear")
+      expect(html).to include("Filter")
+    end
+  end
+end
diff --git a/spec/lib/tiny_admin/views/components/widgets_spec.rb b/spec/lib/tiny_admin/views/components/widgets_spec.rb
new file mode 100644
index 0000000..dff1168
--- /dev/null
+++ b/spec/lib/tiny_admin/views/components/widgets_spec.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require "dummy_rails_app"
+require "rails_helper"
+
+RSpec.describe TinyAdmin::Views::Components::Widgets do
+  describe "with nil widgets" do
+    it "renders nothing" do
+      html = described_class.new(nil).call
+      expect(html).to eq("")
+    end
+  end
+
+  describe "with empty widgets" do
+    it "renders nothing" do
+      html = described_class.new([]).call
+      expect(html).to eq("")
+    end
+  end
+
+  describe "with valid widget classes" do
+    let(:widget_class) do
+      Class.new(Phlex::HTML) do
+        def view_template
+          plain "Widget content"
+        end
+      end
+    end
+
+    it "renders each widget in a card", :aggregate_failures do
+      html = described_class.new([widget_class]).call
+      expect(html).to include("Widget content")
+      expect(html).to include("card-body")
+    end
+  end
+
+  describe "with non-Phlex widget" do
+    it "skips non-Phlex classes" do
+      html = described_class.new([String]).call
+      expect(html).not_to include("card-body")
+    end
+  end
+end