Initial commit: OAuth IAM Laravel application

Laravel-based OAuth/IAM service with Passport, Vue 3 frontend, and
Docker Compose setup for local and production deployment.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

resources/scss/components/_app-nav.scss

@@ -0,0 +1,131 @@
+@use '../abstracts/variables' as *;
+@use '../abstracts/mixins' as *;
+
+.app-nav {
+    position: sticky;
+    top: 0;
+    z-index: 20;
+    border-bottom: 1px solid var(--color-border);
+    background: rgb(255 255 255 / 80%);
+    backdrop-filter: blur(8px);
+
+    @include dark {
+        background: rgb(9 9 11 / 80%);
+    }
+}
+
+.app-nav__inner {
+    max-width: $page-max-width;
+    margin: 0 auto;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: $space-4;
+    padding: $space-3 $space-6;
+}
+
+.app-nav__section {
+    display: flex;
+    align-items: center;
+    gap: $space-6;
+}
+
+.app-nav__brand {
+    display: flex;
+    align-items: center;
+    gap: $space-2;
+}
+
+.app-nav__logo {
+    display: grid;
+    place-items: center;
+    height: 1.75rem;
+    width: 1.75rem;
+    border-radius: $radius-md;
+    background: var(--gradient-accent);
+    color: #fff;
+    font-size: 0.7rem;
+    font-weight: 700;
+}
+
+.app-nav__brand-name {
+    font-weight: 600;
+    letter-spacing: -0.01em;
+    color: var(--color-text-primary);
+}
+
+.app-nav__links {
+    display: none;
+    align-items: center;
+    gap: $space-1;
+
+    @include respond-up($breakpoint-md) {
+        display: flex;
+    }
+}
+
+.app-nav__link {
+    border-radius: $radius-full;
+    padding: $space-1 * 1.5 $space-3;
+    font-size: $font-sm;
+    font-weight: 500;
+    color: var(--color-text-secondary);
+    transition: $transition-fast;
+
+    &:hover {
+        background: var(--color-surface-muted);
+        color: var(--color-text-primary);
+    }
+
+    &--active {
+        background: var(--color-accent-soft);
+        color: var(--color-accent-soft-text);
+    }
+}
+
+.app-nav__controls {
+    display: flex;
+    align-items: center;
+    gap: $space-2;
+}
+
+.app-nav__theme-toggle {
+    display: grid;
+    place-items: center;
+    height: 2rem;
+    width: 2rem;
+    border-radius: $radius-full;
+    border: 1px solid var(--color-border-strong);
+    color: var(--color-text-secondary);
+    transition: $transition-fast;
+
+    @include dark {
+        border-color: var(--color-border);
+    }
+
+    &:hover {
+        background: var(--color-surface-muted);
+        color: var(--color-text-primary);
+    }
+
+    svg {
+        height: 1rem;
+        width: 1rem;
+    }
+}
+
+.app-nav__user {
+    display: none;
+    font-size: $font-sm;
+    color: var(--color-text-secondary);
+
+    @include respond-up($breakpoint-sm) {
+        display: inline;
+    }
+}
+
+.page {
+    max-width: $page-max-width;
+    margin: 0 auto;
+    padding: $space-10 $space-6;
+}