[site] make more mobile friendly

Our navigation looked a bit off on mobile -- mobile and top-level tabs don't
seem to go well. Instead, just put everything on the left for now.

site/mkdocs.yml

@@ -12,9 +12,7 @@ theme:
   name: material
   custom_dir: overrides
   features:
-    - navigation.tabs
     - navigation.sections
-    - navigation.indexes
     - navigation.footer
     - navigation.instant
     - navigation.instant.progress
@@ -67,60 +65,58 @@ hooks:
   - overrides/hooks/shortcodes.py
 
 nav:
-  - Home:
-      - index.md
-      - "Installation":
-          - "Pre-built binaries": docs/installation/pre-built-binaries.md
-          - docs/installation/from-source.md
-          - docs/installation/updating.md
+  - index.md
+  - "Getting started":
+      - "Pre-built binaries": docs/installation/pre-built-binaries.md
+      - docs/installation/from-source.md
+      - docs/installation/updating.md
       - "Platform-specific notes":
           - docs/installation/windows.md
           - docs/installation/macos.md
       - docs/installation/release-urls.md
-      - changelog.md
-  - Usage:
+  - "Using nextest":
       - docs/running.md
       - docs/listing.md
       - docs/reporting.md
-      - "Features":
-          - docs/features/retries.md
-          - docs/features/slow-tests.md
+  - "Features":
+      - docs/features/retries.md
+      - docs/features/slow-tests.md
+      - "More features":
           - docs/features/leaky-tests.md
           - docs/features/target-runners.md
-      - "Features for CI":
           - docs/ci-features/archiving.md
           - "Partitioning/sharding runs": docs/ci-features/partitioning.md
       - "Filterset DSL":
-          - docs/filtersets/index.md
+          - "About filtersets": docs/filtersets/index.md
           - "DSL reference": docs/filtersets/reference.md
-      - Configuration:
-          - docs/configuration/index.md
-          - docs/configuration/per-test-overrides.md
+      - "Integrations":
+          - "Overview": docs/integrations/index.md
+          - docs/integrations/test-coverage.md
+          - "Miri interpreter": docs/integrations/miri.md
+          - docs/integrations/criterion.md
+          - "cargo-mutants": docs/integrations/cargo-mutants.md
+  - Configuration:
+      - "Configuring nextest": docs/configuration/index.md
+      - docs/configuration/per-test-overrides.md
+      - "More configuration":
           - "Specifying platforms": docs/configuration/specifying-platforms.md
           - "Environment variables": docs/configuration/env-vars.md
           - "Minimum versions": docs/configuration/minimum-versions.md
           - "Heavy tests": docs/configuration/threads-required.md
           - "Mutual exclusion and rate-limiting": docs/configuration/test-groups.md
           - docs/configuration/setup-scripts.md
-      - Machine-readable output:
-          - docs/machine-readable/index.md
+  - Machine-readable output:
+      - "About output formats": docs/machine-readable/index.md
+      - "JUnit support": docs/machine-readable/junit.md
+      - "More formats":
           - "Test and binary lists": docs/machine-readable/list.md
-          - "JUnit support": docs/machine-readable/junit.md
           - docs/machine-readable/libtest-json.md
-      - "Integrations":
-          - docs/integrations/index.md
-          - docs/integrations/test-coverage.md
-          - "Miri interpreter": docs/integrations/miri.md
-          - docs/integrations/criterion.md
-          - "cargo-mutants": docs/integrations/cargo-mutants.md
-      - "Stability policy":
-          - docs/stability/index.md
-      - "Design":
-          - docs/design/how-it-works.md
-          - docs/design/custom-test-harnesses.md
-  - Benchmarks:
-      - docs/benchmarks/index.md
-  - "Crates.io": "https://crates.io/crates/cargo-nextest"
+  - "Stability policy": docs/stability/index.md
+  - "Design":
+      - docs/design/how-it-works.md
+      - docs/design/custom-test-harnesses.md
+  - "Benchmarks": docs/benchmarks/index.md
+  - changelog.md
 
 markdown_extensions:
   # Python Markdown

site/src/docs/benchmarks/index.md

@@ -1,3 +1,7 @@
+---
+icon: material/speedometer
+---
+
 # Benchmarks
 
 Nextest's [execution model](../design/how-it-works.md) generally leads to faster test runs than Cargo. How much faster depends on the specifics, but here are some general guidelines:

site/src/docs/configuration/index.md

@@ -1,4 +1,8 @@
-# Configuration
+---
+icon: material/tune
+---
+
+# Configuring nextest
 
 cargo-nextest supports repository-specific configuration at the location `.config/nextest.toml` from the Cargo workspace root. The location of the configuration file can be overridden with the `--config-file` option.
 

site/src/docs/filtersets/index.md

@@ -1,3 +1,7 @@
+---
+icon: material/account-filter
+---
+
 # Filterset DSL
 
 Nextest supports a domain-specific language (DSL) for choosing sets of tests called **filtersets** (formerly **filter expressions**). The DSL is inspired by, and is similar to, [Bazel query](https://bazel.build/docs/query-how-to) and [Mercurial revsets](https://www.mercurial-scm.org/repo/hg/help/revsets).

site/src/docs/integrations/index.md

@@ -1,3 +1,7 @@
+---
+icon: material/vector-combine
+---
+
 # Integrations with other tools
 
 A number of other tools in the Rust ecosystem have integrated with nextest. Some of the more prominent ones are:

site/src/docs/machine-readable/index.md

@@ -1,4 +1,8 @@
-# Machine-readable output
+---
+icon: material/message-processing-outline
+---
+
+# Machine-readable output formats
 
 Nextest provides a number of ways to obtain output suitable for consumption by other tools or infrastructure.
 

site/src/docs/stability/index.md

@@ -1,3 +1,7 @@
+---
+icon: material/ship-wheel
+---
+
 # Stability policy
 
 This section contains information on how cargo-nextest will evolve in a backwards-compatible way over time.

site/src/index.md

@@ -1,6 +1,7 @@
 ---
-title: Nextest
+title: Home
 description: A next-generation test runner for Rust.
+icon: material/home
 ---
 
 # cargo-nextest
@@ -17,7 +18,7 @@ Welcome to the home page for **cargo-nextest**, a next-generation test runner fo
 - **[Up to 3× as fast](docs/benchmarks/index.md) as cargo test.** Nextest uses a [state-of-the-art execution model](docs/design/how-it-works.md) for faster, more reliable test runs.
 - **Identify [slow](docs/features/slow-tests.md) and [leaky](docs/features/leaky-tests.md) tests.** Use nextest to detect misbehaving tests, identify bottlenecks during test execution, and optionally terminate tests if they take too long.
 - **Filter tests using an embedded language.** Use powerful [filtersets](docs/filtersets/index.md) to specify granular subsets of tests on the command-line, and to enable [per-test overrides](docs/configuration/per-test-overrides.md).
-- **Configure [per-test settings](docs/configuration/per-test-overrides.md)**. [Automatically retry](docs/features/retries.md#per-test-overrides) subsets of tests, mark them as [heavy](docs/configuration/threads-required.md), or [run them serially](docs/configuration/test-groups.md).
+- **Configure [per-test settings](docs/configuration/per-test-overrides.md)**. [Automatically retry](docs/features/retries.md#per-test-settings) subsets of tests, mark them as [heavy](docs/configuration/threads-required.md), or [run them serially](docs/configuration/test-groups.md).
 - **Designed for CI.** Nextest addresses real-world pain points in continuous integration scenarios:
   - Use **[pre-built binaries](docs/installation/pre-built-binaries.md)** for quick installation.
   - Set up CI-specific **[configuration profiles](docs/configuration/index.md)**.

site/src/theme/css/extra.css

@@ -1,6 +1,7 @@
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     --md-primary-fg-color: #045;
+    --md-primary-fg-color--dark: #045;
 }
 
 .md-status--experimental::after {